SGM8477-3B [SGMICRO]
1.8V to 5.5V, Low Noise, Zero-Drift Difference Amplifier;
| 型号： | SGM8477-3B |
| 厂家： | 
Shengbang Microelectronics Co, Ltd |
| 描述： | 1.8V to 5.5V, Low Noise, Zero-Drift Difference Amplifier |
| 文件： | 总16页 (文件大小：888K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SGM8477-1/SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
GENERAL DESCRIPTION
FEATURES
The SGM8477-1/3 are low noise, high precision CMOS
difference amplifiers, which are designed to support
precision differential signal processing. These devices
can operate from 1.8V to 5.5V single supply or ±0.9V
to ±2.75V dual power supplies, while consuming only
380μA quiescent current. The supply current of
SGM8477-3 is less than 0.5μA in shutdown mode,
when external MCU controls EN pin to logic "low".
Low Input Offset Voltage: 10μV (MAX)
Low Drift: 0.02μV/℃ (TYP)
Low 0.1Hz to 10Hz Noise: 250nVP-P
Low Noise: 10nV/√Hz at 1kHz
Integrated RFI Filter
Rail-to-Rail Input and Output
Single-Supply Operation
Supply Voltage Range: 1.8V to 5.5V
Quiescent Current: 380μA (TYP)
Shutdown Status Current: < 0.5μA
-40℃ to +125℃ Operating Temperature Range
Small Packaging:
The SGM8477-1/3 feature low noise, a 10μV maximum
input offset voltage and zero-drift over time and
temperature. These devices are suitable in low voltage
and low power systems. They support rail-to-rail input
and output operation. Meanwhile, the SGM8477-1/3 fit
in tiny packages. They are designed to provide high
performance for sensing high-side and low-side current
accurately, such as single battery voltage.
SGM8477-1 is Available in Green SC70-6 and
UTQFN-1.8×1.4-10L Packages
SGM8477-3 is Available in a Green
UTQFN-1.8×1.4-10L Package
The SGM8477-1/3 save external components by
integrated matched resistors in differential applications.
They have different versions for gains of 50 and 300.
APPLICATIONS
Industrial Equipment
The SGM8477-1 is available in Green SC70-6 and
UTQFN-1.8×1.4-10L packages. The SGM8477-3 is
available in a Green UTQFN-1.8×1.4-10L package.
They are all specified over -40℃ to +125℃ temperature
range.
Battery-Powered Equipment
Sensor Signal Conditioning
SG Micro Corp
JULY 2022 – REV. A. 1
www.sg-micro.com
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
PACKAGE/ORDERING INFORMATION
SPECIFIED
PACKAGE
DESCRIPTION
ORDERING
NUMBER
PACKAGE
MARKING
PACKING
OPTION
MODEL
TEMPERATURE
RANGE
SC70-6
SGM8477-1BXC6G/TR
SGM8477-1BXUWQ10G/TR
SGM8477-1GXC6G/TR
GI0XX
I6XX
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
-40℃ to +125℃
SGM8477-1B
(Gain = 50)
UTQFN-1.8×1.4-10L -40℃ to +125℃
SC70-6
GHFXX
I4XX
-40℃ to +125℃
SGM8477-1G
(Gain = 300)
SGM8477-1GXUWQ10G/TR
SGM8477-3BXUWQ10G/TR
SGM8477-3GXUWQ10G/TR
UTQFN-1.8×1.4-10L -40℃ to +125℃
UTQFN-1.8×1.4-10L -40℃ to +125℃
UTQFN-1.8×1.4-10L -40℃ to +125℃
SGM8477-3B
(Gain = 50)
I7XX
SGM8477-3G
(Gain = 300)
I5XX
MARKING INFORMATION
NOTE: XX = Date Code.
SC70-6
UTQFN-1.8×1.4-10L
YYY X X
YY X X
Date Code - Month
Date Code - Year
Serial Number
Date Code - Month
Date Code - Year
Serial Number
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
ABSOLUTE MAXIMUM RATINGS
may affect reliability. Functional operation of the device at any
Supply Voltage...................................................................6V
conditions beyond those indicated in the Recommended
Operating Conditions section is not implied.
Input Common Mode Voltage Range
.................................................... (-VS) - 0.3V to (+VS) + 0.3V
Junction Temperature.................................................+150℃
Storage Temperature Range........................-65℃ to +150℃
Lead Temperature (Soldering 10sec) .........................+260℃
ESD Susceptibility
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged if ESD protections are
not considered carefully. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failureto observe proper handlingand installation procedures
can cause damage. ESD damage can range from subtle
performance degradation tocomplete device failure. Precision
integrated circuits may be more susceptible to damage
because even small parametric changes could cause the
device not to meet the published specifications.
HBM.............................................................................4000V
MM.................................................................................400V
CDM ............................................................................1000V
RECOMMENDED OPERATING CONDITIONS
Specified Voltage Range ....................................1.8V to 5.5V
Operating Temperature Range.....................-40℃ to +125℃
DISCLAIMER
SG Micro Corp reserves the right to make any change in
OVERSTRESS CAUTION
Stresses beyond those listed in Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods
circuit design, or specifications without prior notice.
SG Micro Corp
www.sg-micro.com
JULY 2022
2
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
PIN CONFIGURATIONS
SGM8477-1 (TOP VIEW)
SGM8477-1 (TOP VIEW)
NC
+VS
7
6
REF
-VS
1
2
3
6
5
4
OUT
-IN
8
9
5
4
3
REF
-VS
-IN
-IN
+IN
OUT
10
1
+VS
+IN
2
NC
+IN
SC70-6
UTQFN-1.8×1.4-10L
SGM8477-3 (TOP VIEW)
EN
+VS
7
6
8
9
5
4
3
REF
-VS
OUT
-IN
-IN
+IN
10
1
2
NC
+IN
UTQFN-1.8×1.4-10L
SG Micro Corp
www.sg-micro.com
JULY 2022
3
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
ELECTRICAL CHARACTERISTICS
(At TA = +25℃, +VS = 1.8V to 5.5V, -VS = 0V, VCM = +VS/2, VREF = +VS/2 and RL = 10kΩ, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Characteristics
+VS = 5V
3
10
12
Input Offset Voltage (VOS
)
μV
-40℃ ≤ TA ≤ +125℃
-40℃ ≤ TA ≤ +125℃
Input Offset Voltage Drift (ΔVOS/ΔT)
0.02
108
μV/℃
Input Common Mode Voltage Range (VCM
)
-VS
89
84
58
+VS
V
(-VS) < VCM < (+VS)
-40℃ ≤ TA ≤ +85℃
-40℃ ≤ TA ≤ +125℃
Common Mode Rejection Ratio (CMRR)
dB
Output Characteristics
RL = 10kΩ
6
21
23
Output Voltage Swing from Rail
mV
-40℃ ≤ TA ≤ +125℃
+VS = 1.8V
12
50
Short-Circuit Current (ISC
)
mA
+VS = 5V
Power Supply
Specified Voltage Range (VS)
1.8
5.5
4
V
+VS = 1.8V to 5.5V
1
Power Supply Rejection Ratio (PSRR)
μV/V
6
-40℃ ≤ TA ≤ +125℃
IOUT = 0A, EN = 1.8V (active), +VS = 5V
380
0.2
530
Quiescent Current (IQ)
μA
μs
IOUT = 0A, EN = 0V (shutdown), +VS = 5V,
SGM8477-3 only
0.5
Turn-On Time
+VS = 5V
100
Dynamic Performance
CL = 50pF, Gain = +50
CL = 50pF, Gain = +300
+VS = 5V, Gain = +50
+VS = 5V, Gain = +300
150
32
-3dB Bandwidth (BW-3)
Slew Rate (SR)
kHz
0.4
V/μs
0.15
Noise
Input Voltage Noise
f = 0.1Hz to 10Hz
f = 1kHz
250
10
nVP-P
nV/
Input Voltage Noise Density (en)
Enable Control (SGM8477-3 Only)
Input Logic High Voltage (VIH)
Input Logic Low Voltage (VIL)
EN Input Bias Current
Gain
Hz
(-VS) + 1.8
-0.4
V
V
(-VS) + 0.4
0.4
VEN = +VS or VEN = -VS
μA
0.01
0.01
2
0.2
0.3
(-VS) + 0.1V ≤ VOUT ≤ (+VS) - 0.1V, Gain = +50
(-VS) + 0.1V ≤ VOUT ≤ (+VS) - 0.1V, Gain = +300
(-VS) + 0.1V ≤ VOUT ≤ (+VS) - 0.1V, Gain = +50
(-VS) + 0.1V ≤ VOUT ≤ (+VS) - 0.1V, Gain = +300
Gain Error
%
Gain Temperature Coefficient
ppm/℃
7
SG Micro Corp
www.sg-micro.com
JULY 2022
4
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS
+VS = 5V, TA = +25℃, unless otherwise noted.
Large-Signal Step Response
SGM8477-XB
Small-Signal Step Response
SGM8477-XB
Time (50μs/div)
Time (50μs/div)
Large-Signal Step Response
SGM8477-XG
Common Mode Rejection Ratio vs. Frequency
100
80
60
40
20
0
SGM8477-1B
SGM8477-1G
0.01
0.1
1
10
100
1000
Time (50μs/div)
Frequency (kHz)
Small-Signal Gain vs. Frequency
Small-Signal Gain vs. Frequency
SGM8477-XG
40
35
30
25
20
15
10
60
50
40
30
20
10
0
SGM8477-XB
0.01
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
SG Micro Corp
www.sg-micro.com
JULY 2022
5
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
+VS = 5V, TA = +25℃, unless otherwise noted.
PSRR vs. Frequency (Referred-to-Input)
PSRR vs. Frequency (Referred-to-Input)
SGM8477-1B
140
120
100
80
140
120
100
80
SGM8477-1G
PSRR+
PSRR+
60
60
PSRR-
PSRR-
40
40
20
20
0
0
0.1
1
10
100
1000
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
Quiescent Current vs. Temperature
0.1Hz to 10Hz Noise
500
450
400
350
300
250
-40 -25 -10
5
20 35 50 65 80 95 110 125
Time (1s/div)
Temperature (℃)
Gain Error vs. Temperature
Input Voltage Noise Density vs. Frequency
0.04
0.02
0
35
30
25
20
15
10
5
SGM8477-XG
Continues with no 1/f (flicker) noise.
SGM8477-XB
-0.02
-0.04
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
0.1
1
10
Frequency (kHz)
Temperature (℃)
SG Micro Corp
www.sg-micro.com
JULY 2022
6
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
+VS = 5V, TA = +25℃, unless otherwise noted.
Time Exiting Shutdown (SGM8477-3G)
Time Exiting Shutdown (SGM8477-3B)
EN
EN
OUT
OUT
Time (100μs/div)
Time (100μs/div)
SG Micro Corp
www.sg-micro.com
JULY 2022
7
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
FUNCTIONAL BLOCK DIAGRAM
-VS
SGM8477-XB (G)
1kΩ
50kΩ (300kΩ)
+IN
REF
OUT
+
_
1kΩ
50kΩ (300kΩ)
-IN
+VS
“( )” are for SGM8477-XG only.
SG Micro Corp
www.sg-micro.com
JULY 2022
8
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
APPLICATION INFORMATION
The offset voltage and the output voltage drift of the
SGM8477-1/3 is significant low. To achieve a better
performance of low offset voltage and precision
measurement, the layout and the mechanical condition
should be taken into account at first. The operator should
be careful when they use the thermocouple junctions
formed from connecting the dissimilar conductors as it
can produce the thermoelectric (Seeback) effects. The
potentials of thermal generation can be decreased by
guaranteeing that the mechanical conditions of both
input terminals are equal. The following conditions should
be always taken into account:
General Layout Guidelines
A good layout for SGM8477-1/3 is required. For the
PCB layout, the trace of the board should be short, the
GND plane should be taken into account, and the
surface-mount devices should be placed close to the
pins of SGM8477-1/3. The 0.1μF capacitor should be
placed as close as possible to the supply pin. The
above recommendations should be taken into account
to reduce the effect of EMI (electromagnetic interference).
The susceptibility of the difference amplifier can be
varied by the RFI (radio frequency interference). RFI
can be defined as the shift of the DC voltage level or
offset voltage of the device by varying the interfering
RF signal. For SGM8477-1/3, the susceptibility and the
sensitivity of the RF signal is extreme low. However, if
the level of the radio frequency signal is strong, the
offset voltage of the SG8477-1/3 will be varied. The
application in Figure 1 illustrates the condition of
thermocouple signal.
• To avoid the condition of dissimilar metals, the
SGM8477-1/3 should be used in the situation where
the thermoelectric-coefficient is low.
• The external mechanical components should be taken
into account to isolate any thermal conditions from power
supply or other components.
• The difference amplifier and input circuitry should be
shielded from any currents of air, for instance, the
cooling fans.
The application of measuring current for low common
mode voltage side is illustrated in Figure 2. For achieving
the maximum accuracy of the 16-bit ADC, a precision
voltage reference is significant. Figure 3~4 illustrate the
applications of the thermistor measurement and the
precision instrumentation amplifier.
The above guidelines can significantly reduce the
possibility that the junctions are operated at the different
temperatures, which may cause 0.02μV/℃ or higher
voltage level of thermoelectric.
Operating Voltage
The supported power supply of SGM8477-1/3 is from
1.8V to 5.5V for single supply or ±0.9V to ±2.75V for
dual power supplies. If the supply voltage is higher than
6V (absolute maximum voltage), the device can
permanently be damaged.
Enable Control
For SGM8477-3, if EN pin is floating or logic "high",
SGM8477-3 is in active status; when EN pin is logic
"low", SGM8477-3 will enter into shutdown status.
SG Micro Corp
www.sg-micro.com
JULY 2022
9
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
APPLICATION INFORMATION (continued)
12V
+
5V
0.1μF
Voltage Reference
R1
10.7kΩ
5V
10μF
R5
40.2kΩ
D1
+
R2
2.74kΩ
0.1μF
+
+
+
Zero Adj.
R3
53.6Ω
R6
200Ω
+VS
+
K-Type
Thermocouple
40.7μV/℃
VOUT
SGM8477-1X
REF
_
_
_
-VS
Figure 1. Thermocouple Temperature Measuring Circuit
R2
SGM8706's 1.2V
Voltage Reference
VCC = 5V
C3
0.01µF
C2
0.1μF
R3
Load
_
VBAT
+VS
+
SGM8706
I/O
ILOAD
RSHUNT
+
SGM8477-1X
REF
_
CPU
-VS
R1
ADC
C1
Figure 2. Accurate Low-side Current Sensing
SG Micro Corp
www.sg-micro.com
JULY 2022
10
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
APPLICATION INFORMATION (continued)
VCC = 5V
0.1μF
+VS
+
VOUT
SGM8477-1X
REF
NTC
Thermistor
1MΩ
1MΩ
_
-VS
60kΩ
3V
Figure 3. Thermistor Measurement
SGM8477-XB (G)
VB
+
+IN
REF
OUT
SGM8959
_
R2
+
R1
_
R2
_
-IN
SGM8959
+
VA
Figure 4. Precision Instrumentation Amplifier
SG Micro Corp
www.sg-micro.com
JULY 2022
11
SGM8477-1
SGM8477-3
1.8V to 5.5V, Low Noise,
Zero-Drift Difference Amplifiers
REVISION HISTORY
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
JULY 2022 ‒ REV.A to REV.A.1
Page
Updated Typical Performance Characteristics section.........................................................................................................................................6
Changes from Original (MAY 2017) to REV.A
Page
Changed from product preview to production data.............................................................................................................................................All
SG Micro Corp
www.sg-micro.com
JULY 2022
12
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
SC70-6
D
e1
0.65
e
E1
E
1.9
0.75
0.4
b
1.3
RECOMMENDED LAND PATTERN (Unit: mm)
L
L1
A
c
A1
A2
θ
0.20
Dimensions
Dimensions
In Millimeters
In Inches
Symbol
MIN
MAX
1.100
0.100
1.000
0.350
0.150
2.200
1.350
2.450
MIN
MAX
0.043
0.004
0.039
0.014
0.006
0.087
0.053
0.096
A
A1
A2
b
0.900
0.000
0.900
0.150
0.080
2.000
1.150
2.150
0.035
0.000
0.035
0.006
0.003
0.079
0.045
0.085
c
D
E
E1
e
0.65 TYP
1.300 BSC
0.525 REF
0.026 TYP
0.051 BSC
0.021 REF
e1
L
L1
θ
0.260
0°
0.460
8°
0.010
0°
0.018
8°
NOTES:
1. Body dimensions do not include mode flash or protrusion.
2. This drawing is subject to change without notice.
SG Micro Corp
TX00044.000
www.sg-micro.com
PACKAGE INFORMATION
PACKAGE OUTLINE DIMENSIONS
UTQFN-1.8×1.4-10L
NOTES:
1. All linear dimensions are in millimeters.
2. This drawing is subject to change without notice.
SG Micro Corp
TX00091.000
www.sg-micro.com
PACKAGE INFORMATION
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q2
Q4
Q2
Q4
Q2
Q4
Q1
Q3
Q1
Q3
Q1
Q3
B0
Reel Diameter
P1
A0
K0
Reel Width (W1)
DIRECTION OF FEED
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Reel Width
Reel
Diameter
A0
B0
K0
P0
P1
P2
W
Pin1
Package Type
W1
(mm)
(mm) (mm) (mm) (mm) (mm) (mm) (mm) Quadrant
SC70-6
7″
7″
9.5
9.0
2.40
1.75
2.50
2.10
1.20
0.70
4.0
4.0
4.0
4.0
2.0
2.0
8.0
8.0
Q3
Q1
UTQFN-1.8×1.4-10L
SG Micro Corp
TX10000.000
www.sg-micro.com
PACKAGE INFORMATION
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Length
(mm)
Width
(mm)
Height
(mm)
Reel Type
Pizza/Carton
7″ (Option)
7″
368
442
227
410
224
224
8
18
SG Micro Corp
www.sg-micro.com
TX20000.000
相关型号：
©2020 ICPDF网 联系我们和版权申明