AMC1400-Q1 [TI]
具有高 CMTI 的汽车类 ±250mV 输入、精密电压检测增强型隔离式放大器;型号: | AMC1400-Q1 |
厂家: | TEXAS INSTRUMENTS |
描述: | 具有高 CMTI 的汽车类 ±250mV 输入、精密电压检测增强型隔离式放大器 放大器 |
文件: | 总33页 (文件大小:1818K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
AMC1400-Q1
ZHCSPH8 –JULY 2022
AMC1400-Q1 采用15mm 扩展型SOIC 封装的
TLA7312 高阻抗2V 输入增强型隔离放大器
1 特性
3 说明
• 符合面向汽车应用的AEC-Q100 标准:
– 温度等级1:–40°C 至+125°C,TA
• 提供功能安全型
AMC1400-Q1 是一款隔离式精密放大器,此放大器的
输出与输入电路由抗电磁干扰性能极强的隔离栅隔开。
该隔离栅经认证可提供高达 7.5 kVRMS 的增强型电隔
离,符合 DIN EN IEC 60747-17 (VDE 0884-17) 和
UL1577 标准,并且可支持高达2 kVRMS 的工作电压。
– 有助于进行功能安全系统设计的文档
• ±250mV 输入电压范围,针对使用分流电阻器测量
电流进行了优化
• 固定增益:8.2 V/V
• 低直流误差:
该隔离层可将系统中以不同共模电压电平运行的各器件
隔开,防止高电压冲击导致低压侧器件电气损坏或对操
作员造成伤害。
– 失调电压误差:±0.2mV(最大值)
– 温漂±0.9µV/°C(最大值)
– 增益误差:±0.3%(最大值)
– 增益漂移:±30ppm/°C(最大值)
– 非线性度:0.03%(最大值)
• 高侧和低侧以3.3V 或5V 电压运行
• 高侧电源缺失检测功能
AMC1400-Q1 的输入针对直接连接低阻抗分流电阻器
或其他具有低信号电平的低阻抗电压源的情况进行了优
化。出色的直流精度和低温漂移支持精确的电压检测,
适用于直流/直流转换器、太阳能或风力涡轮机逆变
器、交流电机驱动器或其他必须在高电压、高海拔或高
度污染环境下运行的应用。
AMC1400-Q1 采用宽体 8 引脚 SOIC 封装,符合面向
汽车应用的 AEC-Q100 标准,并支持 –40°C 至
+125°C 的温度范围。
• 高CMTI:100kV/µs(最小值)
• 低EMI,符合CISPR-11 和CISPR-25 标准
• 安全相关认证:
封装信息(1)
– 符合DIN EN IEC 60747-17 (VDE 0884-17) 标
准的7000VPK 增强型隔离
– 符合UL1577 标准且长达1 分钟的7500VRMS
隔离
封装尺寸(标称值)
器件型号
封装
SOIC (8)
AMC1400-Q1
6.40 mm × 14.00 mm
(1) 如需了解所有可用封装,请参阅数据表末尾的可订购产品附
录。
2 应用
• 基于分流电阻器的电流感应,可用于:
– HEV/EV 充电桩
– HEV/EV 车载充电器(OBC)
– HEV/EV 直流/直流转换器
– HEV/EV 牵引逆变器
High-side supply
(3.3 V or 5 V)
Low-side supply
(3.3 V or 5 V)
AMC1400-Q1
VDD1
INP
VDD2
OUTP
I
+250 mV
–250 mV
0 V
VCMout
±2.05 V
ADC
INN
OUTN
GND2
GND1
典型应用
本文档旨在为方便起见,提供有关TI 产品中文版本的信息,以确认产品的概要。有关适用的官方英文版本的最新信息,请访问
www.ti.com,其内容始终优先。TI 不保证翻译的准确性和有效性。在实际设计之前,请务必参考最新版本的英文版本。
English Data Sheet: SBASAI2
AMC1400-Q1
ZHCSPH8 –JULY 2022
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Table of Contents
7.1 Overview...................................................................17
7.2 Functional Block Diagram.........................................17
7.3 Feature Description...................................................17
7.4 Device Functional Modes..........................................19
8 Application and Implementation..................................20
8.1 Application Information............................................. 20
8.2 Typical Application.................................................... 20
8.3 Best Design Practices...............................................25
8.4 Power Supply Recommendations.............................26
8.5 Layout....................................................................... 27
9 Device and Documentation Support............................28
9.1 Documentation Support............................................ 28
9.2 接收文档更新通知..................................................... 28
9.3 支持资源....................................................................28
9.4 Trademarks...............................................................28
9.5 Electrostatic Discharge Caution................................28
9.6 术语表....................................................................... 28
10 Mechanical, Packaging, and Orderable
1 特性................................................................................... 1
2 应用................................................................................... 1
3 说明................................................................................... 1
4 Revision History.............................................................. 2
5 Pin Configuration and Functions...................................3
6 Specifications.................................................................. 4
6.1 Absolute Maximum Ratings........................................ 4
6.2 ESD Ratings............................................................... 4
6.3 Recommended Operating Conditions.........................4
6.4 Thermal Information....................................................5
6.5 Power Ratings.............................................................5
6.6 Insulation Specifications............................................. 6
6.7 Safety-Related Certifications...................................... 7
6.8 Safety Limiting Values.................................................7
6.9 Electrical Characteristics.............................................8
6.10 Switching Characteristics..........................................9
6.11 Timing Diagram.........................................................9
6.12 Insulation Characteristics Curves........................... 10
6.13 Typical Characteristics............................................ 11
7 Detailed Description......................................................17
Information.................................................................... 28
4 Revision History
注:以前版本的页码可能与当前版本的页码不同
DATE
REVISION
NOTES
July 2022
*
Initial Release
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5 Pin Configuration and Functions
VDD1
INP
1
2
3
4
8
7
6
5
VDD2
OUTP
OUTN
GND2
INN
GND1
Not to scale
图5-1. DWL Package, 8-Pin SOIC (Top View)
表5-1. Pin Functions
PIN
NAME
TYPE
DESCRIPTION
NO.
1
2
VDD1
INP
High-side power
Analog input
High-side power supply.(1)
Noninverting analog input. Either INP or INN must have a DC current path to GND1
to define the common-mode input voltage.(2)
Inverting analog input. Either INP or INN must have a DC current path to GND1 to
define the common-mode input voltage.(2)
3
INN
Analog input
4
5
6
7
8
GND1
GND2
OUTN
OUTP
VDD2
High-side ground
Low-side ground
Analog output
High-side analog ground.
Low-side analog ground.
Inverting analog output.
Noninverting analog output.
Low-side power supply.(1)
Analog output
Low-side power
(1) See the Power Supply Recommendations section for power-supply decoupling recommendations.
(2) See the Layout section for details.
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6 Specifications
6.1 Absolute Maximum Ratings
see(1)
MIN
–0.3
MAX
UNIT
High-side VDD1 to GND1
6.5
6.5
Power-supply voltage
V
Low-side VDD2 to GND2
–0.3
Analog input voltage
Output voltage
Input current
INP, INN
VDD1 + 0.5
VDD2 + 0.5
10
V
V
GND1 –6
GND2 –0.5
–10
OUTP, OUTN
Continuous, any pin except power-supply pins
mA
Junction, TJ
Storage, Tstg
150
Temperature
°C
150
–65
(1) Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply
functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions . If
used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully
functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime.
6.2 ESD Ratings
VALUE
±2000
±1000
UNIT
Human-body model (HBM), per AEC Q100-002(1), HBM ESD classification Level 2
Charged-device model (CDM), per AEC Q100-011, CDM ESD classification Level C6
V(ESD)
Electrostatic discharge
V
(1) AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.
6.3 Recommended Operating Conditions
over operating ambient temperature range (unless otherwise noted)
MIN
NOM
MAX
UNIT
POWER SUPPLY
High-side power supply
Low-side power supply
ANALOG INPUT
VClipping Differential input voltage before clipping output
VDD1 to GND1
VDD2 to GND2
3
3
5
5.5
5.5
V
V
3.3
±320
mV
mV
VIN = VINP –VINN
VIN = VINP –VINN
VFSR
VCM
Specified linear differential full-scale voltage
Operating common-mode input voltage
250
–250
VDD1 –
2.1
(VINP + VINN) / 2 to GND1
V
–0.16
ANALOG OUTPUT
CLOAD
CLOAD
RLOAD
Capacitive load
On OUTP or OUTN to GND2
OUTP to OUTN
500
250
1
pF
pF
kΩ
Capacitive load
Resistive load
On OUTP or OUTN to GND2
10
25
TEMPERATURE RANGE
TA Specified ambient temperature
125
°C
–40
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6.4 Thermal Information
DWL (SOIC)
8 PINS
63.2
THERMAL METRIC(1)
UNIT
RθJA
Junction-to-ambient thermal resistance
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
RθJC(top) Junction-to-case (top) thermal resistance
26.1
RθJB
ΨJT
Junction-to-board thermal resistance
28.5
Junction-to-top characterization parameter
Junction-to-board characterization parameter
7.8
26.8
ΨJB
RθJC(bot) Junction-to-case (bottom) thermal resistance
N/A
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
6.5 Power Ratings
PARAMETER
TEST CONDITIONS
VALUE
99
UNIT
PD
Maximum power dissipation (both sides) VDD1 = VDD2 = 5.5 V
mW
VDD1 = 3.6 V
Maximum power dissipation (high-side)
VDD1 = 5.5 V
31
PD1
mW
mW
54
26
VDD2 = 3.6 V
PD2
Maximum power dissipation (low-side)
VDD2 = 5.5 V
45
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UNIT
6.6 Insulation Specifications
over operating ambient temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VALUE
GENERAL
CLR
External clearance(1)
External creepage(1)
Shortest pin-to-pin distance through air
mm
mm
≥14.7
≥15.7
CPG
Shortest pin-to-pin distance across the package surface
Minimum internal gap (internal clearance) of the double
insulation
DTI
CTI
Distance through insulation
µm
V
≥21
Comparative tracking index
Material group
DIN EN 60112 (VDE 0303-11); IEC 60112
According to IEC 60664-1
≥600
I
I-IV
I-III
Rated mains voltage ≤600 VRMS
Rated mains voltage ≤1000 VRMS
Overvoltage category
per IEC 60664-1
DIN EN IEC 60747-17 (VDE 0884-17)(2)
Maximum repetitive peak
VIORM
At AC voltage
2800
VPK
isolation voltage
At AC voltage (sine wave)
2000
2800
VRMS
VDC
Maximum-rated isolation
VIOWM
working voltage
At DC voltage
VTEST = VIOTM, t = 60 s (qualification test)
VTEST = 1.2 × VIOTM, t = 1 s (100% production test)
Tested in air, 1.2/50-µs waveform per IEC 62368-1
10600
12720
9800
Maximum transient
VIOTM
VPK
isolation voltage
VIMP
Maximum impulse voltage(3)
VPK
VPK
Maximum surge
Tested in oil (qualification test),
1.2/50-µs waveform per IEC 62368-1
VIOSM
12800
≤5
isolation voltage(4)
Method a, after input/output safety test subgroups 2 and 3,
Vini = VIOTM, tini = 60 s, Vpd(m) = 1.2 × VIORM, tm = 10 s
Method a, after environmental tests subgroup 1,
Vini = VIOTM, tini = 60 s, Vpd(m) = 1.6 × VIORM, tm = 10 s
≤5
qpd
Apparent charge(5)
pC
Method b1, at routine test (100% production) and
preconditioning (type test), Vini = VIOTM, tini = 1 s, Vpd(m) = 1.875
× VIORM, tm = 1 s
≤5
Barrier capacitance,
input to output(6)
CIO
RIO
VIO = 0.5 VPP at 1 MHz
~1.5
pF
VIO = 500 V at TA = 25°C
> 1012
> 1011
> 109
Insulation resistance,
input to output(6)
VIO = 500 V at 100°C ≤TA ≤125°C
VIO = 500 V at TS = 150°C
Ω
Pollution degree
Climatic category
2
55/125/21
UL1577
VTEST = VISO = 7500 VRMS, t = 60 s (qualification),
VTEST = 1.2 × VISO = 9000 VRMS, t = 1 s (100% production test)
VISO
Withstand isolation voltage
7500
VRMS
(1) Apply creepage and clearance requirements according to the specific equipment isolation standards of an application. Care must be
taken to maintain the creepage and clearance distance of a board design to ensure that the mounting pads of the isolator on the
printed circuit board (PCB) do not reduce this distance. Creepage and clearance on a PCB become equal in certain cases. Techniques
such as inserting grooves, ribs, or both on a PCB are used to help increase these specifications.
(2) This coupler is suitable for safe electrical insulation only within the safety ratings. Compliance with the safety ratings shall be ensured
by means of suitable protective circuits.
(3) Testing is carried out in air to determine the surge immunity of the package.
(4) Testing is carried in oil to determine the intrinsic surge immunity of the isolation barrier.
(5) Apparent charge is electrical discharge caused by a partial discharge (pd).
(6) All pins on each side of the barrier are tied together, creating a two-pin device.
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6.7 Safety-Related Certifications
VDE
UL
DIN EN IEC 60747-17 (VDE 0884-17),
EN IEC 60747-17,
DIN EN IEC 62368-1 (VDE 0868-1),
EN IEC 62368-1,
Recognized under 1577 component recognition program
IEC 62368-1 Clause : 5.4.3 ; 5.4.4.4 ; 5.4.9
Reinforced insulation
Single protection
Certificate number: 40040142 (pending)
File number: E181974
6.8 Safety Limiting Values
Safety limiting(1) intends to minimize potential damage to the isolation barrier upon failure of input or output circuitry. A failure
of the I/O can allow low resistance to ground or the supply and, without current limiting, dissipate sufficient power to over-
heat the die and damage the isolation barrier potentially leading to secondary system failures.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
R
θJA = 63.2°C/W, VDDx = 3.6 V,
550
TJ = 150°C, TA = 25°C
θJA = 63.2°C/W, VDDx = 5.5 V,
TJ = 150°C, TA = 25°C
θJA = 63.2°C/W, TJ = 150°C, TA = 25°C
IS
Safety input, output, or supply current
mA
R
360
PS
TS
Safety input, output, or total power
Maximum safety temperature
R
1980
150
mW
°C
(1) The maximum safety temperature, TS, has the same value as the maximum junction temperature, TJ, specified for the device. The IS
and PS parameters represent the safety current and safety power, respectively. Do not exceed the maximum limits of IS and PS. These
limits vary with the ambient temperature, TA.
The junction-to-air thermal resistance, RθJA, in the Thermal Information table is that of a device installed on a high-K test board for
leaded surface-mount packages. Use these equations to calculate the value for each parameter:
TJ = TA + RθJA × P, where P is the power dissipated in the device.
TJ(max) = TS = TA + RθJA × PS, where TJ(max) is the maximum junction temperature.
PS = IS × VDDmax, where VDDmax is the maximum supply voltage for high-side and low-side.
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6.9 Electrical Characteristics
minimum and maximum specifications apply from TA = –40°C to +125°C, VDD1 = 3.0 V to 5.5 V, VDD2 = 3.0 V to 5.5 V, INP
= –250 mV to +250 mV, and INN = GND1; typical specifications are at TA = 25°C, VDD1 = 5 V, and VDD2 = 3.3 V (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
ANALOG INPUT
VOS
Input offset voltage(1) (2)
Input offset drift(1) (2) (4)
TA = 25°C, INP = INN = GND1
±0.01
±0.1
–100
–98
19
0.2
mV
–0.2
–0.9
TCVOS
0.9 µV/°C
fIN = 0 Hz, VCM min ≤VCM ≤VCM max
fIN = 10 kHz, VCM min ≤VCM ≤VCM max
INN = GND1
CMRR
Common-mode rejection ratio
dB
RIN
RIND
IIB
Single-ended input resistance
Differential input resistance
Input bias current
kΩ
kΩ
22
INP = INN = GND1; IIB = (IIBP + IIBN) / 2
µA
nA
pF
pF
–41
–30
±5
2
–24
IIO
Input offset current
IIO = IIBP –IIBN; INP = INN = GND1
INN = GND1, fIN = 275 kHz
fIN = 275 kHz
CIN
CIND
Single-ended input capacitance
Differential input capacitance
1
ANALOG OUTPUT
Nominal gain
8.2
±0.04%
±5
V/V
EG
Gain error(1)
TA = 25°C
0.3%
–0.3%
–30
TCEG
Gain drift(1) (5)
30 ppm/°C
0.03%
Nonlinearity(1)
±0.01%
–85
–0.03%
THD
SNR
Total harmonic distortion(3)
fIN = 10 kHz
dB
INP = INN = GND1, fIN = 0 Hz,
BW = 100 kHz brickwall filter
Output noise
230
µVRMS
fIN = 1 kHz, BW = 10 kHz
fIN = 10 kHz, BW = 100 kHz
PSRR vs VDD1, at DC
81.5
85
72
Signal-to-noise ratio
dB
dB
–100
PSRR vs VDD1,
100-mV and 10-kHz ripple
–96
–106
–86
PSRR
Power-supply rejection ratio(2)
PSRR vs VDD2, at DC
PSRR vs VDD2,
100-mV and 10-kHz ripple
VCMout
Common-mode output voltage
1.39
1.44
1.49
2.52
V
V
VOUT = (VOUTP –VOUTN);
|VIN| = |VINP –VINN| > |VClipping
VCLIPout
Clipping differential output voltage
±2.49
–2.52
|
VFailsafe
BW
Failsafe differential output voltage
Output bandwidth
VDD1 missing
V
kHz
Ω
–2.63
–2.57
310
–2.53
250
ROUT
Output resistance
On OUTP or OUTN
< 0.2
On OUTP or OUTN, sourcing or sinking,
INN = INP = GND1, outputs shorted to
either GND2 or VDD2
Output short-circuit current
14
mA
CMTI
Common-mode transient immunity
100
150
kV/µs
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6.9 Electrical Characteristics (continued)
minimum and maximum specifications apply from TA = –40°C to +125°C, VDD1 = 3.0 V to 5.5 V, VDD2 = 3.0 V to 5.5 V, INP
= –250 mV to +250 mV, and INN = GND1; typical specifications are at TA = 25°C, VDD1 = 5 V, and VDD2 = 3.3 V (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
POWER SUPPLY
VDD1 rising
2.5
2.4
2.7
2.6
2.45
2.0
6.3
7.2
5.3
5.9
2.9
V
VDD1 undervoltage detection
threshold
VDD1UV
VDD2UV
IDD1
VDD1 falling
2.8
VDD2 rising
2.2
2.65
V
2.2
VDD2 undervoltage detection
threshold
VDD2 falling
1.85
8.5
mA
9.8
3.0 V ≤VDD1 ≤3.6 V
4.5 V ≤VDD1 ≤5.5 V
3.0 V ≤VDD2 ≤3.6 V
4.5 V ≤VDD2 ≤5.5 V
High-side supply current
Low-side supply current
7.2
mA
8.1
IDD2
(1) The typical value includes one standard deviation (sigma) at nominal operating conditions.
(2) This parameter is input referred.
(3) THD is the ratio of the rms sum of the amplitudes of first five higher harmonics to the amplitude of the fundamental.
(4) Offset error temperature drift is calculated using the box method, as described by the following equation:
TCVOS = (ValueMAX - ValueMIN) / TempRange
(5) Gain error temperature drift is calculated using the box method, as described by the following equation:
TCEG (ppm) = (ValueMAX - ValueMIN) / (Value(T=25℃) x TempRange) x 106
6.10 Switching Characteristics
over operating ambient temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
1.3
1.3
1
MAX
UNIT
µs
tr
tf
Output signal rise time
Output signal fall time
µs
VINx to VOUTx signal delay (50% - 10%)
VINx to VOUTx signal delay (50% - 50%)
VINx to VOUTx signal delay (50% - 90%)
Unfiltered output
1.5
2.1
3
µs
Unfiltered output
Unfiltered output
1.6
2.5
µs
µs
VDD1 step to 3.0 V with VDD2 ≥3.0 V,
to VOUTP, VOUTN valid, 0.1% settling
tAS
Analog settling time
500
µs
6.11 Timing Diagram
250 mV
INP - INN
0
– 250 mV
tf
tr
OUTN
OUTP
VCMout
50% - 10%
50% - 50%
50% - 90%
图6-1. Rise, Fall, and Delay Time Definition
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6.12 Insulation Characteristics Curves
600
VDD1 = VDD2 = 3.6 V
VDD1 = VDD2 = 5.5 V
500
400
300
200
100
0
0
25
50
75
100
125
150
TA (°C)
D069
图6-3. Thermal Derating Curve for Safety-Limiting Power per
图6-2. Thermal Derating Curve for Safety-Limiting Current per
VDE
VDE
TA up to 150°C, stress-voltage frequency = 60 Hz, isolation working voltage = 2000 VRMS, operating lifetime = 34 year
图6-4. Reinforced Isolation Capacitor Lifetime Projection
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6.13 Typical Characteristics
at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted)
200
150
100
50
200
150
100
50
VDD1
VDD2
Device 1
Device 2
Device 3
0
0
-50
-50
-100
-150
-200
-100
-150
-200
3
3.5
4
4.5
VDDx (V)
5
5.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D027
D026
图6-5. Input Offset Voltage vs Supply Voltage
图6-6. Input Offset Voltage vs Temperature
0
-20
-70
-75
-80
-40
-85
-60
-90
-95
-80
-100
-105
-110
-100
-120
0.001
0.01
0.1
1
fIN (kHz)
10
100
1000
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D038
D039
图6-7. Common-Mode Rejection Ratio vs Input Frequency
图6-8. Common-Mode Rejection Ratio vs Temperature
25
-23
-25
-27
-29
-31
-33
-35
-37
-39
-41
15
5
-5
-15
-25
-35
-45
-0.5
0
0.5
1
1.5
2
2.5
3
3
3.5
4
4.5
VDD1 (V)
5
5.5
VCM (V)
D003
D004
图6-9. Input Bias Current vs Common-Mode Input Voltage
图6-10. Input Bias Current vs High-Side Supply Voltage
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6.13 Typical Characteristics (continued)
at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted)
-23
-25
-27
-29
-31
-33
-35
-37
-39
-41
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
VDD1
VDD1
3
3.5
4
4.5
VDDx (V)
5
5.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D020
D005
图6-12. Gain Error vs Supply Voltage
图6-11. Input Bias Current vs Temperature
0.3
0.2
0.1
0
5
0
Device 1
Device 2
Device 3
-5
-10
-15
-20
-25
-30
-35
-40
-0.1
-0.2
-0.3
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
1
10
100
1000
fIN (kHz)
D021
D007
图6-13. Gain Error vs Temperature
图6-14. Normalized Gain vs Input Frequency
0°
5
4.5
4
OUTN
OUTP
-45°
-90°
3.5
3
-135°
-180°
-225°
-270°
-315°
-360°
2.5
2
1.5
1
0.5
0
1
10
100
1000
-350
-250
-150
-50
50
150
Differential Input Voltage (mV)
250
350
fIN (kHz)
D008
D006
图6-15. Output Phase vs Input Frequency
图6-16. Output Voltage vs Input Voltage
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6.13 Typical Characteristics (continued)
at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted)
0.03
0.025
0.02
0.03
0.02
0.01
0
VDD1
VDD2
0.015
0.01
0.005
0
-0.005
-0.01
-0.015
-0.02
-0.025
-0.03
-0.01
-0.02
-0.03
-250 -200 -150 -100 -50
0
Differential Input Voltage (mV)
50 100 150 200 250
3
3.5
4
4.5
VDDx (V)
5
5.5
D028
D029
图6-17. Nonlinearity vs Input Voltage
图6-18. Nonlinearity vs Supply Voltage
0.03
0.02
0.01
0
-70
-75
Device 1
Device 2
Device 3
VDD1
VDD2
-80
-85
-0.01
-0.02
-0.03
-90
-95
-100
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
3
3.5
4
4.5
VDDx (V)
5
5.5
D030
D056
图6-19. Nonlinearity vs Temperature
图6-20. Total Harmonic Distortion vs Supply Voltage
-70
-75
10000
1000
100
10
-80
-85
-90
Device 1
Device 2
Device 3
-95
-100
0.1
1
10
Frequency (kHz)
100
1000
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D017
D059
图6-22. Input-Referred Noise Density vs Frequency
图6-21. Total Harmonic Distortion vs Temperature
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6.13 Typical Characteristics (continued)
at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted)
80
75
70
65
60
55
50
45
40
80
77.5
75
VDD1
VDD2
72.5
70
67.5
65
62.5
60
3
3.5
4
4.5
VDDx (V)
5
5.5
0
50
100
150
|VINP - VINN| (mV)
200
250
300
D034
D032
图6-24. Signal-to-Noise Ratio vs Supply Voltage
图6-23. Signal-to-Noise Ratio vs Input Voltage
80
0
77.5
75
-20
-40
-60
72.5
70
67.5
65
-80
Device 1
Device 2
Device 3
62.5
60
-100
VDD2
VDD1
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
-120
0.001
0.01
0.1
1
10
Ripple Frequency (kHz)
100
1000
D041
图6-25. Signal-to-Noise Ratio vs Temperature
图6-26. Power-Supply Rejection Ratio vs Ripple Frequency
1.49
1.48
1.47
1.46
1.45
1.44
1.43
1.42
1.41
1.4
1.49
1.48
1.47
1.46
1.45
1.44
1.43
1.42
1.41
1.4
1.39
1.39
3
3.5
4
4.5
VDD2 (V)
5
5.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D009
D010
图6-27. Output Common-Mode Voltage vs Low-Side Supply
图6-28. Output Common-Mode Voltage vs Temperature
Voltage
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6.13 Typical Characteristics (continued)
at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted)
360
340
320
300
280
260
240
360
340
320
300
280
260
240
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
3
3.5
4
4.5
VDD2 (V)
5
5.5
D012
D011
图6-30. Output Bandwidth vs Temperature
图6-29. Output Bandwidth vs Low-Side Supply Voltage
8.5
8
8.5
8
7.5
7
7.5
7
6.5
6
6.5
6
5.5
5
5.5
5
4.5
4.5
4
IDD1 vs VDD1
IDD2 vs VDD2
IDD1
IDD2
4
3.5
3.5
3
3.5
4
4.5
VDDx (V)
5
5.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D043
D044
图6-31. Supply Current vs Supply Voltage
图6-32. Supply Current vs Temperature
4
3.5
3
4
3.5
3
2.5
2
2.5
2
1.5
1
1.5
1
0.5
0
0.5
0
3
3.5
4
4.5
VDD2 (V)
5
5.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D065
D066
图6-33. Output Rise and Fall Time vs Low-Side Supply
图6-34. Output Rise and Fall Time vs Temperature
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6.13 Typical Characteristics (continued)
at VDD1 = 5 V, VDD2 = 3.3 V, INP = –250 mV to 250 mV, INN = 0 V, and fIN = 10 kHz (unless otherwise noted)
3.8
3.4
3
3.8
3.4
3
50% - 90%
50% - 50%
50% - 10%
50% - 90%
50% - 50%
50% - 10%
2.6
2.2
1.8
1.4
1
2.6
2.2
1.8
1.4
1
0.6
0.2
0.6
0.2
3
3.5
4
4.5
VDD2 (V)
5
5.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
D067
D068
图6-35. VIN to VOUT Signal Delay vs Low-Side Supply Voltage
图6-36. VIN to VOUT Signal Delay vs Temperature
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7 Detailed Description
7.1 Overview
The AMC1400-Q1 is a fully differential, precision, isolated amplifier. The input stage of the device consists of a
fully differential amplifier that drives a second-order, delta-sigma (ΔΣ) modulator. The modulator converts the
analog input signal into a digital bitstream that is transferred across the isolation barrier that separates the high-
side from the low-side. On the low-side, the received bitstream is processed by a fourth-order analog filter that
outputs a differential signal at the OUTP and OUTN pins that is proportional to the input signal.
The SiO2-based, capacitive isolation barrier supports a high level of magnetic field immunity, as described in the
ISO72x Digital Isolator Magnetic-Field Immunity application report. The digital modulation used in the AMC1400-
Q1 to transmit data across the isolation barrier, and the isolation barrier characteristics itself, result in high
reliability and common-mode transient immunity.
7.2 Functional Block Diagram
VDD1
VDD2
OUTP
OUTN
GND2
AMC1400-Q1
Diagnostics
Analog Filter
INP
ΔΣ Modulator
INN
GND1
7.3 Feature Description
7.3.1 Analog Input
The differential amplifier input stage of the AMC1400-Q1 feeds a second-order, switched-capacitor, feed-forward
ΔΣ modulator. The gain of the differential amplifier is set by internal precision resistors with a differential input
impedance of RIND. The modulator converts the analog input signal into a bitstream that is transferred across the
isolation barrier, as described in the Isolation Channel Signal Transmission section.
There are two restrictions on the analog input signals INP and INN. First, if the input voltages VINP or VINN
exceed the range specified in the Absolute Maximum Ratings table, the input currents must be limited to the
absolute maximum value, because the electrostatic discharge (ESD) protection turns on. In addition, the linearity
and parametric performance of the device are ensured only when the analog input voltage remains within the
linear full-scale range (VFSR) and within the common-mode input voltage range (VCM), as specified in the
Recommended Operating Conditions table.
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7.3.2 Isolation Channel Signal Transmission
The AMC1400-Q1 uses an on-off keying (OOK) modulation scheme, as shown in 图 7-1, to transmit the
modulator output bitstream across the SiO2-based isolation barrier. The transmit driver (TX) shown in the
Functional Block Diagram transmits an internally-generated, high-frequency carrier across the isolation barrier to
represent a digital one and does not send a signal to represent a digital zero. The nominal frequency of the
carrier used inside the AMC1400-Q1 is 480 MHz.
The receiver (RX) on the other side of the isolation barrier recovers and demodulates the signal and provides the
input to the fourth-order analog filter. The AMC1400-Q1 transmission channel is optimized to achieve the highest
level of common-mode transient immunity (CMTI) and lowest level of radiated emissions caused by the high-
frequency carrier and RX/TX buffer switching.
Internal Clock
Modulator Bitstream
on High-side
Signal Across Isolation Barrier
Recovered Sigal
on Low-side
图7-1. OOK-Based Modulation Scheme
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7.3.3 Analog Output
The AMC1400-Q1 offers a differential analog output comprised of the OUTP and OUTN pins. For differential
input voltages (VINP –VINN) in the range from –250 mV to +250 mV, the device provides a linear response with
a nominal gain of 8.2. For example, for a differential input voltage of 250 mV, the differential output voltage
(VOUTP – VOUTN) is 2.05 V. At zero input (INP shorted to INN), both pins output the same common-mode output
voltage VCMout, as specified in the Electrical Characteristics table. For absolute differential input voltages greater
than 250 mV but less than 320 mV, the differential output voltage continues to increase in magnitude but with
reduced linearity performance. The outputs saturate at a differential output voltage of VCLIPout, as shown in 图
7-2, if the differential input voltage exceeds the VClipping value.
Maximum input range before clipping (VClipping
)
Linear input range (VFSR
)
VOUTN
VCLIPout
VOUTP
VFAILSAFE
VCMout
– 320 mV
– 250 mV
320 mV
250 mV
0
Differential Input Voltage (VINP – VINN
)
图7-2. Output Behavior of the AMC1400-Q1
The AMC1400-Q1 offers a fail-safe feature that simplifies diagnostics on a system level. 图 7-2 shows the fail-
safe mode, in which the AMC1400-Q1 outputs a negative differential output voltage that does not occur under
normal operating conditions. The fail-safe output is active in two cases:
• When the high-side supply is missing or below the VDD1UV threshold
• When the common-mode input voltage, that is VCM = (VINP + VINN) / 2, exceeds the common-mode
overvoltage detection level VCMov
Use the maximum VFAILSAFE voltage specified in the Electrical Characteristics table as a reference value for fail-
safe detection on a system level.
7.4 Device Functional Modes
The AMC1400-Q1 is operational when the power supplies VDD1 and VDD2 are applied, as specified in the
Recommended Operating Conditions table.
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8 Application and Implementation
备注
Information in the following applications sections is not part of the TI component specification, and TI
does not warrant its accuracy or completeness. TI’s customers are responsible for determining
suitability of components for their purposes, as well as validating and testing their design
implementation to confirm system functionality.
8.1 Application Information
With its stretched SOIC package, the AMC1400-Q1 is specifically designed for isolated, high precision, shunt-
based current sensing in applications with 800-V and higher working voltages. This device is designed for
operating in harsh environments with a high pollution degree or high altitudes.
8.2 Typical Application
图 8-1 depicts a simplified block diagram of a DC/DC converter for an 800-V battery system where the
AMC1400-Q1 is used to measure the input current on the high-voltage side. The DC bus current flows through a
shunt resistor (RSHUNT) and produces a voltage drop that is sensed by the AMC1400-Q1. The AMC1400-Q1
outputs a differential analog voltage that is proportional to the input signal and galvanically isolated from the
high-voltage side. The differential output voltage is typically routed to an analog-to-digital converter (ADC) of a
microcontroller (MCU) to complete the current-sensing signal chain. The AMC1411-Q1 is used in the same
application for measuring the DC bus voltage. Both devices share a common high-side power supply based on
the SN6501-Q1 push-pull driver and a transformer that supports the desired isolation voltage ratings.
The stretched SOIC package, differential input, differential output, and the high common-mode transient
immunity (CMTI) of the AMC1400-Q1 ensure reliable and accurate operation in high-noise environments while
meeting IEC standards for reinforced isolation at 1 kV and higher working voltages.
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SW
+VBUS
V12V
DC/DC
SW
RSHUNT
– VBUS
C12 1 µF
C11 100 nF
R12 10
C14 1 µF
AMC1400-Q1
C13 100 nF
VDD1
VDD2
OUTP
OUTN
GND2
INP
to RC filter / ADC
to RC filter / ADC
C15
10 nF
R11 10
INN
GND1
C22 1 µF
C24 1 µF
AMC1411-Q1
C21 100 nF
C23 100 nF
VDD1
VDD2
OUTP
OUTN
GND2
IN
to RC filter / ADC
to RC filter / ADC
C25 100 pF
SHTDN
GND1
TPS76350-Q1
SN6501-Q1
NC
EN
GND
IN
D1
GND
VCC
D2
VOUT = 5 V
OUT
GND
10 μF 100 nF
10 μF
100 nF 4.7 μF
图8-1. Using the AMC1400-Q1 for Current Sensing in a Typical Application
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8.2.1 Design Requirements
表8-1 lists the parameters for this typical application.
表8-1. Design Requirements
PARAMETER
DC bus voltage
VALUE
1000 V (maximum)
Overvoltage category
II
2
Pollution degree
Altitude
≤4000 m
3.3 V or 5 V
3.3 V or 5 V
10 A
High-side supply voltage
Low-side supply voltage
Transient peak DC/DC input current
Nominal DC/DC input current
Voltage drop across RSHUNT for a linear response
Maximum voltage drop across RSHUNT before clipping
4 A
±250 mV (maximum)
±320 mV (maximum)
8.2.2 Detailed Design Procedure
The value of the shunt resistor (RSHUNT) is selected such that the transient peak input current to the DC/DC
converter (10 A) produces a voltage drop across the shunt resistor that matches the linear full-scale input range
of the AMC1400-Q1 (250 mV). Consider the following two restrictions when selecting the value of the shunt
resistor:
• The voltage drop across the shunt caused by the nominal-rated DC link current range must not exceed the
recommended differential input voltage range for a linear response: |VSHUNT| ≤|VFSR
• The voltage drop caused by the maximum allowed overcurrent must not exceed the input voltage that causes
a clipping output: |VSHUNT| ≤|VClipping
|
|
In this example, a 25-mΩ shunt resistor is selected (RSHUNT = 250 mV / 10 A).
At the nominal-rated current, the power dissipation in the shunt resistor is R × I2 = 25 mΩ × (4 A)2 = 0.4 W. For
surface-mounted shunts, the heat is mainly dissipated via the device terminals and the printed circuit board
(PCB) traces. The power rating of a shunt is typically specified for a 70°C terminal temperature and derated for
higher temperatures. This rating ensures that the shunt itself does not exceed its specified maximum operating
temperature at the rated power dissipation. Careful PCB design is required not to exceed the terminal
temperature at the rated power dissipation. Using wide copper traces to spread the heat over a larger area of the
PCB, heat sinks, and air flow can improve the thermal design.
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8.2.2.1 Insulation Coordination
Electrical insulation must be designed to withstand the rated impulse voltage, temporary overvoltage, and the
working voltage. In addition, the physical distance between exposed metal parts on the high- and low-voltage
sides must meet the minimum creepage and clearance requirements for the rated working voltage and transient
overvoltages.
The ISO 17409:2020 standard specifies that an electrical road vehicle must be designed to withstand a minimum
impulse voltage of 2500 V. The minimum clearance to support a 2500-V impulse voltage is 1.5 mm for basic
isolation and 3.0 mm for reinforced isolation, according to Table F.2 of the IEC60664-1 standard. The equipment
is designed to operate at altitudes up to 4000 m above sea level and the minimum clearance must be increased
to 1.29 × 3 mm = 4 mm (rounded up). The factor of 1.29 is taken from table A.2 of the IEC60664-1 standard. The
AMC1400-Q1 provides a minimum clearance of 14.7 mm and easily meets the requirement.
The maximum temporary overvoltage, a voltage that must be sustained for 60 s, is typically determined be the
formula 2 × VWM + 1000 V, where VWM is the maximum working voltage that can occur under normal operating
conditions. In this example, VWM equals the maximum DC bus voltage (1000 V) and the maximum temporary
overvoltage is calculated to be 3000 VPK (2 × 1000 V + 1000 V = 3000 V). If the overvoltage test (also known as
the HiPot test) is performed for 1 s only, the test voltage must be multiplied with a factor of 1.2 times and
becomes 3600 V (1.2 × 3000 V = 3600 V). The minimum clearance to support a 3600-V temporary overvoltage
is 5.5 mm for basic isolation and 8.0 mm for reinforced isolation. These values are taken from Table 9 of the
IEC61800-5-1 standard. The equipment is designed to operate at altitudes up to 4000 m above sea level and the
minimum clearance must be increased to 1.29 × 8 mm = 10.5 mm (rounded up). The factor of 1.29 is taken from
Table A.2 of the IEC60664-1 standard. The AMC1400-Q1 provides a minimum clearance of 14.7 mm and easily
meets the requirement.
The working voltage in this example is 1000 VDC and is lower than the maximum working voltage (VIOWM ) of
2800 VDC) that the AMC1400-Q1 supports.
Finally, the minimum creepage distance for a working voltage of 1000 VDC, insulating material group I, pollution
degree 2, and reinforced isolation is 2 × 5 mm = 10 mm according to IEC60664-1 Table F.4. The 5-mm value for
the 1000-V basic insulation is doubled for reinforced isolation. The AMC1400-Q1 provides a minimum creepage
of 15.7 mm and provides significant margin against the minimum requirement.
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8.2.2.2 Input Filter Design
Place an RC filter in front of the isolated amplifier to improve the signal-to-noise performance of the signal path.
Design the input filter such that:
• The cutoff frequency of the filter is at least one order of magnitude lower than the sampling frequency (20
MHz) of the ΔΣmodulator
• The input bias current does not generate a significant voltage drop across the DC impedance of the input
filter
• The impedances measured from the analog inputs are equal
For most applications, the structure shown in 图8-2 achieves excellent performance.
AMC1400-Q1
VDD1
VDD2
OUTP
OUTN
GND2
10
10
10 nF
INP
INN
GND1
图8-2. Differential Input Filter
8.2.2.3 Differential to Single-Ended Output Conversion
图 8-3 shows an example of a TLV9001-Q1-based signal conversion and filter circuit for systems using single-
ended input ADCs to convert the analog output voltage into digital. With R1 = R2 = R3 = R4, the output voltage
equals (VOUTP – VOUTN) + VREF. Tailor the bandwidth of this filter stage to the bandwidth requirement of the
system and use NP0-type capacitors for best performance. For most applications, R1 = R2 = R3 = R4 = 3.3 kΩ
and C1 = C2 = 330 pF yields good performance.
C1
AMC1400-Q1
R2
VDD1
VDD2
OUTP
OUTN
GND2
R1
R3
INP
–
+
ADC
To MCU
INN
TLV9001-Q1
GND1
C2
R4
VREF
图8-3. Connecting the AMC1400-Q1 Output to a Single-Ended Input ADC
For more information on the general procedure to design the filtering and driving stages of SAR ADCs, see the
18-Bit, 1MSPS Data Acquisition Block (DAQ) Optimized for Lowest Distortion and Noise and 18-Bit Data
Acquisition Block (DAQ) Optimized for Lowest Power reference guides, available for download at www.ti.com.
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8.2.3 Application Curve
One important aspect of a power-stage design is the effective detection of an overcurrent condition to protect the
switching devices and passive components from damage. To power off the system quickly in the event of an
overcurrent condition, a low delay caused by the isolated amplifier is required. 图 8-4 shows the typical full-scale
step response of the AMC1400-Q1.
VOUTN
VOUTP
VIN
图8-4. Step Response of the AMC1400-Q1
8.3 Best Design Practices
Do not leave the inputs of the AMC1400-Q1 unconnected (floating) when the device is powered up. If the device
inputs are left floating, the input bias current may drive the inputs to a positive value that exceeds the operating
common-mode input voltage and the output voltage may not be valid.
Connect the high-side ground (GND1) to INN, either by a hard short or through a resistive path. A DC current
path between INN and GND1 is required to define the input common-mode voltage. Take care not to exceed the
input common-mode range, as specified in the Recommended Operating Conditions table. For best accuracy,
route the ground connection as a separate trace that connects directly to the shunt resistor rather than shorting
GND1 to INN directly at the input to the device. See the Layout section for more details.
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8.4 Power Supply Recommendations
The AMC1400-Q1 does not require any specific power-up sequencing. The high-side power supply (VDD1) is
decoupled with a low-ESR, 100-nF capacitor (C1) parallel to a low-ESR, 1-µF capacitor (C2). The low-side
power supply (VDD2) is equally decoupled with a low-ESR, 100-nF capacitor (C3) parallel to a low-ESR, 1-µF
capacitor (C4). Place all four capacitors (C1, C2, C3, and C4) as close to the device as possible.
The ground reference for the high-side (GND1) is derived from the end of the shunt resistor, which is connected
to the negative input (INN) of the device. For best DC accuracy, use a separate trace (as shown in 图 8-5) to
make this connection instead of shorting GND1 to INN directly at the device input. If a four-terminal shunt is
used, the device inputs are connected to the inner leads and GND1 is connected to the outer lead on the INN-
side of the shunt.
INP
VDD1
VDD2
C2 1 µF
C1 100 nF
R2 10
C4 1 µF
AMC1400-Q1
I
C3 100 nF
VDD1
VDD2
OUTP
OUTN
GND2
INP
to RC filter / ADC
to RC filter / ADC
C5
10 nF
R1 10
INN
GND1
图8-5. Decoupling of the AMC1400-Q1
Capacitors must provide adequate effective capacitance under the applicable DC bias conditions they
experience in the application. Multilayer ceramic capacitors (MLCCs) typically exhibit only a fraction of their
nominal capacitance under real-world conditions and this factor must be taken into consideration when selecting
these capacitors. This problem is especially acute in low-profile capacitors, in which the dielectric field strength is
higher than in taller components. Reputable capacitor manufacturers provide capacitance versus DC bias curves
that greatly simplify component selection.
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8.5 Layout
8.5.1 Layout Guidelines
图 8-6 shows a layout recommendation with the critical placement of the decoupling capacitors (as close as
possible to the AMC1400-Q1 supply pins) and placement of the other components required by the device. For
best performance, place the shunt resistor close to the INP and INN inputs of the AMC1400-Q1 and keep the
layout of both connections symmetrical.
The ground pin (GND1) of the AMC1400-Q1 is connected to the same end of the shunt resistor that is connected
to the negative input pin (INN) of the AMC1400-Q1. If a four-pin shunt is used, the input pins (INN and INP) of
the AMC1400-Q1 are connected to the inner leads, and the GND1 pin is connected to the outer lead on the INN-
side of the shunt resistor. To minimize offset and improve accuracy, route the ground connection as a separate
trace that connects directly to the shunt resistor rather than shorting GND1 to INN directly at the input to the
device.
8.5.2 Layout Example
Clearance area, to be kept free of
any conductive materials.
C2
C1
C4
C3
INP
R2
R1
to RC filter / ADC
to RC filter / ADC
OUTP
OUTN
GND2
AMC1400-Q1
INN
GND1
Top Metal
Inner or Bottom Layer Metal
Via
图8-6. Recommended Layout of the AMC1400-Q1
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9 Device and Documentation Support
9.1 Documentation Support
9.1.1 Related Documentation
For related documentation, see the following:
• Texas Instruments, Isolation Glossary application note
• Texas Instruments, Semiconductor and IC Package Thermal Metrics application note
• Texas Instruments, ISO72x Digital Isolator Magnetic-Field Immunity application note
• Texas Instruments, TLV900x-Q1 Low-Power RRIO 1-MHz Automotive Operational Amplifier data sheet
• Texas Instruments, TPS763xx-Q1 Low-Power, 150-mA, Low-Dropout Linear Regulators data sheet
• Texas Instrument, SN6501-Q1 Transformer Driver for Isolated Power Supplies data sheet
• Texas Instruments, 18-Bit, 1-MSPS Data Acquisition Block (DAQ) Optimized for Lowest Distortion and Noise
reference guide
• Texas Instruments, 18-Bit, 1-MSPS Data Acquisition Block (DAQ) Optimized for Lowest Power reference
guide
• Texas Instruments, Isolated Amplifier Voltage Sensing Excel Calculator design tool
• Texas Instruments, Best in Class Radiated Emissions EMI Performance with the AMC1300B-Q1 Isolated
Amplifier technical white paper
9.2 接收文档更新通知
要接收文档更新通知,请导航至 ti.com 上的器件产品文件夹。点击订阅更新 进行注册,即可每周接收产品信息更
改摘要。有关更改的详细信息,请查看任何已修订文档中包含的修订历史记录。
9.3 支持资源
TI E2E™ 支持论坛是工程师的重要参考资料,可直接从专家获得快速、经过验证的解答和设计帮助。搜索现有解
答或提出自己的问题可获得所需的快速设计帮助。
链接的内容由各个贡献者“按原样”提供。这些内容并不构成 TI 技术规范,并且不一定反映 TI 的观点;请参阅
TI 的《使用条款》。
9.4 Trademarks
TI E2E™ is a trademark of Texas Instruments.
所有商标均为其各自所有者的财产。
9.5 Electrostatic Discharge Caution
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
9.6 术语表
TI 术语表
本术语表列出并解释了术语、首字母缩略词和定义。
10 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
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PACKAGE OPTION ADDENDUM
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30-Sep-2022
PACKAGING INFORMATION
Orderable Device
Status Package Type Package Pins Package
Eco Plan
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
Samples
Drawing
Qty
(1)
(2)
(3)
(4/5)
(6)
AMC1400QDWLRQ1
ACTIVE
SOIC
DWL
8
500
RoHS & Green
NIPDAU
Level-3-260C-168 HR
-40 to 125
1400Q
Samples
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
PACKAGE OUTLINE
DWL0008A
SOIC - 4.034 mm max height
S
C
A
L
E
1
.
2
5
0
PLASTIC SMALL OUTLINE
C
SEATING PLANE
17.4
17.1
A
PIN 1 ID AREA
0.1 C
6X 1.27
8
5
1
6.5
6.3
NOTE 3
2X
3.81
4
0.51
0.31
8X
(3.634)
14.1
13.9
NOTE 4
B
0.25
A B C
4.034 MAX
0.33
0.13
TYP
SEE DETAIL A
(1.625)
0.25
GAGE PLANE
0.3
0.1
1.1
0.6
0 -8
DETAIL A
TYPICAL
4224743/A 01/2019
NOTES:
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing
per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not
exceed 0,15 mm per side.
4. This dimension does not include interlead flash.
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EXAMPLE BOARD LAYOUT
DWL0008A
SOIC - 4.034 mm max height
PLASTIC SMALL OUTLINE
(14.25)
SYMM
(14.6)
8X (1.875)
8X (2)
SYMM
8X (0.6)
8X (0.6)
1
1
4
8
5
8
5
SYMM
SYMM
4
(R0.05)
TYP
(R0.05)
TYP
6X
(1.27)
6X
(1.27)
(16.475)
(16.25)
LAND PATTERN EXAMPLE
PCB CLEARANCE & CREEPAGE OPTIMIZED
EXPOSED METAL SHOWN
SCALE:3X
LAND PATTERN EXAMPLE
STANDARD
EXPOSED METAL SHOWN
SCALE:3X
0.07 MAX
ALL AROUND
0.07 MIN
ALL AROUND
EXPOSED METAL
EXPOSED METAL
METAL
SOLDER MASK
OPENING
SOLDER MASK
OPENING
METAL UNDER
SOLDER MASK
NON SOLDER MASK
DEFINED
SOLDER MASK
DEFINED
(PREFERRED)
SOLDER MASK DETAILS
4224743/A 01/2019
NOTES: (continued)
5. Publication IPC-7351 may have alternate designs.
6. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
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EXAMPLE STENCIL DESIGN
DWL0008A
SOIC - 4.034 mm max height
PLASTIC SMALL OUTLINE
8X (2)
SYMM
1
4
8
SYMM
8X (0.6)
5
6X (1.27)
(16.25)
SOLDER PASTE EXAMPLE
STANDARD
BASED ON 0.125 mm THICK STENCIL
SCALE:4X
SYMM
8X (1.875)
8X (0.6)
1
4
8
5
SYMM
6X (1.27)
(16.475)
SOLDER PASTE EXAMPLE
PCB CLEARANCE & CREEPAGE OPTIMIZED
BASED ON 0.125 mm THICK STENCIL
SCALE:4X
4224743/A 01/2019
NOTES: (continued)
7. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
8. Board assembly site may have different recommendations for stencil design.
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