AD8220TRMZ-EP [ADI]
JFET Input Instrumentation Amplifier with Rail-to-Rail Output in MSOP Package;
| 型号： | AD8220TRMZ-EP |
| 厂家： | 
ADI |
| 描述： | JFET Input Instrumentation Amplifier with Rail-to-Rail Output in MSOP Package 放大器 光电二极管 |
| 文件： | 总11页 (文件大小：316K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
JFET Input Instrumentation Amplifier with
Rail-to-Rail Output in MSOP Package
AD8220-EP
Enhanced Product
FEATURES
PIN CONFIGURATION
Low input currents
AD8220-EP
1
2
3
4
8
7
6
5
–IN
+V
S
25 pA maximum input bias current
2 pA maximum input offset current
High CMRR
92 dB CMRR (minimum) to 60 Hz, G = 10
72 dB CMRR (minimum) at 5 kHz, G = 1
Excellent ac specifications and low power
1.5 MHz bandwidth (G = 1)
14 nV/√Hz input noise (1 kHz)
Slew rate: 2 V/µs
1 mA maximum quiescent supply current
Versatile
MSOP package
Rail-to-rail output
Input voltage range to below negative supply rail
7 kV ESD HBM protection
R
R
V
OUT
G
G
REF
+IN
–V
S
Figure 1.
10000
1000
100
10
I
BIAS
I
OS
1
4.5 V to 36 V single supply
2.25 V to 18 V dual supply
Gain set with single resistor (G = 1 to 1000)
0.1
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC standard)
Extended industrial temperature range: −55°C to +125°C
Controlled manufacturing baseline
1 assembly/test site
0.01
–75
–25
25
75
125
TEMPERATURE (°C)
Figure 2. Input Bias Current and Offset Current vs. Temperature
1 fabrication site
Product change notification
Qualification data available on request
can operate on a 18 V dual supply, as well as on a single 5 V
supply. Its rail-to-rail output stage maximizes dynamic range on
the low voltage supplies common in portable applications. Its
ability to run on a single 5 V supply eliminates the need to use
higher voltage, dual supplies. The AD8220-EP draws a maximum
of 750 µA of quiescent current at 25°C, making it ideal for battery
powered devices.
APPLICATIONS
Medical instrumentation
Precision data acquisition
Transducer interfaces
GENERAL DESCRIPTION
The AD8220-EP is the first single-supply, JFET input instrumenta-
tion amplifier available in an MSOP package. Designed to meet
the needs of high performance, portable instrumentation, the
AD8220-EP has a minimum common-mode rejection ratio
(CMRR) of 77 dB at dc and a minimum CMRR of 72 dB at 5 kHz
for G = 1. Maximum input bias current at 25°C is 25 pA and
remains below 100 nA over the entire extended industrial
temperature range. Despite the JFET inputs, the AD8220-EP
typically has a noise corner of only 10 Hz.
Gain is set from 1 to 1000 with a single resistor. Increasing the
gain increases the common-mode rejection. Measurements that
need higher CMRR when reading small signals benefit when
the AD8220-EP is set for large gains.
A reference pin allows the user to offset the output voltage. This
feature is useful when interfacing with analog-to-digital converters.
The AD8220-EP is available in an MSOP that takes roughly half
the board area of an SOIC. Performance is specified over the
extended industrial temperature range of −55°C to +125°C.
With the proliferation of mixed-signal processing, the number
of power supplies required in each system has grown. The
AD8220-EP is designed to alleviate this problem. The AD8220-EP
Additional application and technical information can be found
in the AD8220 data sheet.
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rightsof third parties that may result fromits use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks andregisteredtrademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
©2017 Analog Devices, Inc. All rights reserved.
www.analog.com
AD8220-EP
Enhanced Product
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................7
ESD Caution...................................................................................7
Pin Configuration and Function Descriptions..............................8
Typical Performance Characteristics ..............................................9
Outline Dimensions....................................................................... 11
Ordering Guide .......................................................................... 11
Enhanced Product Features ............................................................ 1
Applications....................................................................................... 1
General Description......................................................................... 1
Pin Configuration............................................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
REVISION HISTORY
11/2017—Rev. 0 to Rev. A
Changes to Table 1............................................................................ 4
Changes to Input Offset, VOSI, Average TC Parameter, Table 2......... 5
4/2017—Revision 0: Initial Version
Rev. A | Page 2 of 11
Enhanced Product
AD8220-EP
SPECIFICATIONS
+VS = 15 V, −VS = −15 V, V REF = 0 V, TA = 25°C, TOPR = −55°C to +125°C, G = 1, RL = 2 kΩ,1 unless otherwise noted.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
COMMON-MODE REJECTION RATIO (CMRR)
TOPR
CMRR from DC to 60 Hz with 1 kΩ Source
Imbalance
VCM = 10 V
G = 1
G = 10
G = 100
G = 1000
77
92
92
92
dB
dB
dB
dB
CMRR at 5 kHz
G = 1
G = 10
G = 100
G = 1000
VCM = 10 V
72
80
80
80
dB
dB
dB
dB
NOISE
Referred to input (RTI) noise = √(eni2 + (eno/G)2), TA
Voltage Noise, 1 kHz
Input Voltage Noise, eni
Output Voltage Noise, eno
RTI, 0.1 Hz to 10 Hz
G = 1
VIN+, VIN− = 0 V
VIN+, VIN− = 0 V
14
90
nV/√Hz
nV/√Hz
5
0.8
1
µV p-p
µV p-p
fA/√Hz
G = 1000
Current Noise
VOLTAGE OFFSET
Input Offset, VOSI
Average Temperature Coefficient (TC) TOPR
Output Offset, VOSO
Average TC
f = 1 kHz
VOS = VOSI + VOSO/G
TA
−250
−10
−750
−10
+250
+10
+750
+10
µV
µV/°C
µV
TA
TOPR
µV/°C
Offset RTI vs. Supply (PSR)
G = 1
G = 10
G = 100
G = 1000
VS = 5 V to 15 V, TOPR
80
92
92
92
dB
dB
dB
dB
INPUT CURRENT
Input Bias Current
Over Temperature
Input Offset Current
Over Temperature
DYNAMIC RESPONSE
Small Signal Bandwidth, −3 dB
G = 1
TA
TOPR
TA
25
100
2
pA
nA
pA
nA
TOPR
10
TA
1500
800
120
14
kHz
kHz
kHz
kHz
G = 10
G = 100
G = 1000
Settling Time 0.01%
G = 1
G = 10
G = 100
G = 1000
10 V step, TA
5
µs
µs
µs
µs
4.3
8.1
58
Rev. A | Page 3 of 11
AD8220-EP
Enhanced Product
Parameter
Settling Time 0.001%
G = 1
Test Conditions/Comments
Min
Typ
Max
Unit
10 V step, TA
6
µs
µs
µs
µs
G = 10
G = 100
G = 1000
4.6
9.6
74
Slew Rate
G = 1 to 100
GAIN
Gain Range
Gain Error
TA
2
1
V/µs
V/V
G = 1 + (49.4 kΩ/RG), TOPR
1000
VOUT = 10 V
G = 1
G = 10
G = 100
G = 1000
−0.1
−0.8
−0.8
−0.8
+0.1
+0.8
+0.8
+0.8
%
%
%
%
Gain Nonlinearity
G = 1
G = 10
G = 100
G = 1000
G = 1
G = 10
G = 100
VOUT = −10 V to +10 V, TA
RL = 10 kΩ
RL = 10 kΩ
RL = 10 kΩ
RL = 10 kΩ
RL = 2 kΩ
RL = 2 kΩ
RL = 2 kΩ
10
5
15
10
60
500
15
15
75
ppm
ppm
ppm
ppm
ppm
ppm
ppm
30
400
10
10
50
Gain vs. Temperature
G = 1
G > 10
3
10
−50
ppm/°C
ppm/°C
INPUT
Impedance (Pin to Ground)2
Input Operating Voltage Range3
Over Temperature
OUTPUT
TA
104||5
GΩ||pF
VS = 2.25 V to 18 V for dual supplies, TA
TOPR
−VS − 0.1
−VS − 0.1
+VS − 2
+VS − 2.2
V
V
Output Swing
Over Temperature
Short-Circuit Current
REFERENCE INPUT
RIN
RL = 10 kΩ, TA
TOPR
TA
−14.7
−14.3
+14.7
+14.3
V
V
mA
15
40
TA
kΩ
µA
V
IIN
VIN+, VIN− = 0 V
TA
70
+VS
Voltage Range
Gain to Output
POWER SUPPLY
Operating Range4
Quiescent Current
Over Temperature
TEMPERATURE RANGE
For Specified Performance
1
0.0001 V/V
2.25
−55
18
750
1000
V
µA
µA
TA
TOPR
TOPR
+125
°C
1 When the output sinks more than 4 mA, use a 47 pF capacitor in parallel with the load to prevent ringing. Otherwise, use a larger load, such as 10 kΩ.
2 Differential and common-mode input impedance (ZDIFF and ZCM) can be calculated from the pin impedance (ZPIN): ZDIFF = 2(ZPIN); ZCM = ZPIN/2.
3 The AD8220-EP can operate up to a diode drop below the negative supply but the bias current increases sharply. The input voltage range reflects the maximum
allowable voltage where the input bias current is within the specification.
4 At the minimum supply voltage of 2.25 V, ensure that the input common-mode voltage is within the input voltage range specification.
Rev. A | Page 4 of 11
Enhanced Product
AD8220-EP
+VS = 5 V, −VS = 0 V, V REF = 2.5 V, TA = 25°C, TOPR = −55°C to +125°C, G = 1, RL = 2 kΩ1, unless otherwise noted.
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
COMMON-MODE REJECTION RATIO (CMRR) TOPR
CMRR from DC to 60 Hz with 1 kΩ Source VCM = 0 V to 2.5 V
Imbalance
G = 1
77
92
92
92
dB
dB
dB
dB
G = 10
G = 100
G = 1000
CMRR at 5 kHz
G = 1
G = 10
G = 100
G = 1000
VCM = 0 V to 2.5 V
72
80
80
80
dB
dB
dB
dB
NOISE
RTI noise = √(eni2 + (eno/G)2), TA
VS = 2.5 V
VIN+, VIN− = 0 V, VREF = 0 V
VIN+, VIN− = 0 V, VREF = 0 V
Voltage Noise, 1 kHz
Input Voltage Noise, eni
Output Voltage Noise, eno
RTI, 0.1 Hz to 10 Hz
G = 1
14
90
nV/√Hz
nV/√Hz
5
0.8
1
µV p-p
µV p-p
fA/√Hz
G = 1000
Current Noise
VOLTAGE OFFSET
Input Offset, VOSI
Average TC
Output Offset, VOSO
Average TC
Offset RTI vs. Supply (PSR)
G = 1
G = 10
f = 1 kHz
VOS = VOSI + VOSO/G
TA
TOPR
TA
TOPR
TOPR
−300
−10
−800
−10
+300
+10
+800
+10
µV
µV/°C
µV
µV/°C
80
92
92
92
dB
dB
dB
dB
G = 100
G = 1000
INPUT CURRENT
Input Bias Current
Over Temperature
Input Offset Current
Over Temperature
DYNAMIC RESPONSE
Small Signal Bandwidth, −3 dB
G = 1
TA
TOPR
TA
TOPR
TA
25
100
2
pA
nA
pA
nA
10
1500
800
120
14
kHz
kHz
kHz
kHz
G = 10
G = 100
G = 1000
Settling Time 0.01%
G = 1
G = 10
G = 100
G = 1000
Settling Time 0.001%
G = 1
G = 10
G = 100
G = 1000
TA
3 V step
4 V step
4 V step
4 V step
TA
3 V step
4 V step
4 V step
4 V step
2.5
2.5
7.5
30
µs
µs
µs
µs
3.5
3.5
8.5
37
µs
µs
µs
µs
Rev. A | Page 5 of 11
AD8220-EP
Enhanced Product
Parameter
Slew Rate
G = 1 to 100
GAIN
Gain Range
Gain Error
Test Conditions/Comments
Min
2
Typ
Max
Unit
V/µs
V/V
TA
G = 1 + (49.4 kΩ/RG), TOPR
1
1000
VOUT = 0.3 V to 2.9 V for G = 1, VOUT = 0.3 V to 3.8 V for
G > 1
G = 1
G = 10
G = 100
G = 1000
Nonlinearity
−0.1
−0.8
−0.8
−0.8
+0.1
+0.8
+0.8
+0.8
%
%
%
%
VOUT = 0.3 V to 2.9 V for G = 1, VOUT = 0.3 V to 3.8 V for
G > 1, TA
G = 1
G = 10
G = 100
G = 1000
G = 1
G = 10
G = 100
RL = 10 kΩ
RL = 10 kΩ
RL = 10 kΩ
RL = 10 kΩ
RL = 2 kΩ
RL = 2 kΩ
RL = 2 kΩ
50
50
75
750
50
50
75
ppm
ppm
ppm
ppm
ppm
ppm
ppm
Gain vs. Temperature
G = 1
G > 10
3
10
−50
ppm/°C
ppm/°C
INPUT
Impedance (Pin to Ground)2
Input Voltage Range3
Over Temperature
TA
TA
TOPR
104||6
GΩ||pF
V
V
−0.1
+VS −
2.2
OUTPUT
Output Swing
RL = 10 kΩ
TOPR
0.15
0.3
4.85
4.70
V
V
mA
Over Temperature
Short-Circuit Current
REFERENCE INPUT
RIN
15
40
TA
kΩ
µA
V
IIN
VIN+, VIN− = 0 V
TA
70
+VS
Voltage Range
Gain to Output
POWER SUPPLY
Operating Range
Quiescent Current
Over Temperature
TEMPERATURE RANGE
TOPR, For Specified Performance
−VS
4.5
1
0.0001
V/V
36
750
1000
V
µA
µA
TA
TOPR
TOPR
−55
+125
°C
1 When the output sinks more than 4 mA, use a 47 pF capacitor in parallel with the load to prevent ringing. Otherwise, use a larger load, such as 10 kΩ.
2 Differential and common-mode impedance can be calculated from the pin impedance: ZDIFF = 2(ZPIN); ZCM = ZPIN/2.
3 The AD8220-EP can operate up to a diode drop below the negative supply but the bias current increases sharply. The input voltage range reflects the maximum
allowable voltage where the input bias current is within the specification.
Rev. A | Page 6 of 11
Enhanced Product
AD8220-EP
ABSOLUTE MAXIMUM RATINGS
Table 3.
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
Parameter
Rating
Supply Voltage
Power Dissipation
18 V
See Figure 3
Indefinite1
VS
Output Short-Circuit Current
Input Voltage (Common Mode)
Differential Input Voltage
Storage Temperature Range
Operating Temperature Range
Reflow Temperature
Junction Temperature
θJA (4-Layer JEDEC Standard Board)2
ESD
VS
−65°C to +125°C
−55°C to +125°C
260°C
140°C
189°C/W
Figure 3 shows the maximum safe power dissipation in the
package vs. the ambient temperature for the MSOP on a 4-layer
JEDEC standard board.
0.6
0.5
0.4
0.3
0.2
0.1
0
Human Body Model
Charge Device Model
Machine Model
7 kV
1.25 kV
0.4 kV
1 Assumes the load is referenced to midsupply.
2 θJA value is an approximation.
–60
–40
–20
0
20
40
60
80
100
120
AMBIENT TEMPERATURE (°C)
Figure 3. Maximum Power Dissipation vs. Ambient Temperature
ESD CAUTION
Rev. A | Page 7 of 11
AD8220-EP
Enhanced Product
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD8220-EP
1
2
3
4
8
7
6
5
–IN
+V
S
R
R
V
OUT
G
G
REF
–V
+IN
S
TOP VIEW
(Not to Scale)
Figure 4. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1
2, 3
4
5
6
−IN
RG
Negative Input Terminal (True Differential Input).
Gain Setting Terminals. Place a resistor across the RG pins.
Positive Input Terminal (True Differential Input).
Negative Power Supply Terminal.
Reference Voltage Terminal. Drive this terminal with a low impedance voltage source to level shift the output.
Output Terminal.
+IN
−VS
REF
VOUT
+VS
7
8
Positive Power Supply Terminal.
Rev. A | Page 8 of 11
Enhanced Product
AD8220-EP
TYPICAL PERFORMANCE CHARACTERISTICS
2
1
10000
+125°C
+85°C
+25°C
–40°C
–55°C
1000
–V
+V
I
S
100
10
0
BIAS
–1
–2
–3
–4
I
S
OS
1
0.1
0.01
NOTES
1. THE AD8220-EP CAN OPERATE SLIGHTLY BELOW THE
NEGATIVE SUPPLY, BUT THE BIAS CURRENT INCREASES
SHARPLY AND MAY AFFECT DEVICE RELIABILITY.
–75
–25
25
75
125
2
4
6
8
10
12
14
16
18
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
Figure 5. Input Bias Current and Offset Current vs. Temperature,
VS = 15 V, VREF = 0 V
Figure 8. Input Voltage Limit vs. Supply Voltage, G = 1, VREF = 0 V
10000
1000
100
0
–1
–2
I
BIAS
+125°C
10
1
–3
+85°C
+25°C
–40°C
–55°C
I
OS
–4
2
1
0
0.1
0.01
–75
–25
25
75
125
2
4
6
8
10
12
14
16
18
TEMPERATURE (°C)
DUAL SUPPLY VOLTAGE (±V)
Figure 6. Input Bias Current and Offset Current vs. Temperature,
VS = 5 V, VREF = 2.5 V
Figure 9. Output Voltage Swing Referred to Supply Voltage vs. Dual Supply
Voltage, RLOAD = 2 kΩ, G = 10, VREF = 0 V
10
8
0
–0.2
–0.4
6
4
2
+125°C
+85°C
+25°C
–40°C
–55°C
0
–2
–4
–6
–8
–10
0.4
0.2
0
2
4
6
8
10
12
14
16
18
–60 –40 –20
0
20
40
60
80
100 120 140
DUAL SUPPLY VOLTAGE (±V)
TEMPERATURE (°C)
Figure 7. CMRR vs. Temperature, G = 1
Figure 10. Output Voltage Swing Referred to Supply Voltage vs. Dual Supply
Voltage, RLOAD = 10 kΩ, G = 10, VREF = 0 V
Rev. A | Page 9 of 11
AD8220-EP
Enhanced Product
15
10
5
0
–1
–2
–3
–4
+V
S
+125°C
+85°C
+25°C
–40°C
–55°C
0
+125°C
+85°C
+25°C
–40°C
–55°C
–5
–10
2
1
0
–V
S
–15
100
1k
10k
0
2
4
6
8
10
12
14
16
I
(mA)
R
(Ω)
OUT
LOAD
Figure 13. Output Voltage Swing Referred to Supply Voltage vs. Output
Current (IOUT), VS = 15 V, VREF = 0 V
Figure 11. Output Voltage Swing vs. Load Resistance (RLOAD), VS = 15 V,
REF = 0 V
V
0
–1
–2
–3
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
+V
S
+125°C
+85°C
+25°C
–40°C
–55°C
+125°C
+85°C
+25°C
–40°C
–55°C
2.0
1.5
1.0
0.5
0
–V
S
0
2
4
6
8
10
12
14
16
100
1k
10k
I
(mA)
OUT
R
(Ω)
LOAD
Figure 14. Output Voltage Swing Referred to Supply Voltage vs. Output
Current (IOUT), VS = 5 V, VREF = 2.5 V
Figure 12. Output Voltage Swing vs. Load Resistance (RLOAD), VS = 5 V,
REF = 2.5 V
V
Rev. A | Page 10 of 11
Enhanced Product
AD8220-EP
OUTLINE DIMENSIONS
3.20
3.00
2.80
8
1
5
4
5.15
4.90
4.65
3.20
3.00
2.80
PIN 1
IDENTIFIER
0.65 BSC
0.95
0.85
0.75
15° MAX
1.10 MAX
0.80
0.55
0.40
0.15
0.05
0.23
0.09
6°
0°
0.40
0.25
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-187-AA
Figure 15. 8-Lead Mini Small Outline Package [MSOP]
(RM-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model1
Temperature Range
Package Description
Package Option
RM-8
RM-8
Branding
Y6T
Y6T
AD8220TRMZ-EP
AD8220TRMZ-EP-R7
−55°C to +125°C
−55°C to +125°C
8-Lead MSOP
8-Lead MSOP, 7”Tape and Reel
1 Z = RoHS Compliant Part.
©2017 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D15434-0-11/17(A)
Rev. A | Page 11 of 11
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