Instrumentation Amplifiers
Analog Devices instrumentation amplifiers (in-amps) are precision gain blocks that have a differential input and an output that may be differential or single-ended with respect to a reference terminal. These devices amplify the difference between two input signal voltages while rejecting any signals that are common to both inputs. The in-amps are widely used in many industrial, measurement, data acquisition, and medical applications where dc precision and gain accuracy must be maintained within a noisy environment, and where large common-mode signals (usually at the ac power line frequency) are present.
Product Selection Table
In-Amp Diamond Plot Tool
The Diamond Plot Tool is a web application that generates a configuration-specific Output Voltage Range vs. Input Common-Mode Voltage graph, also known as the Diamond Plot, for Analog Devices Instrumentation Amplifiers. Based on user inputs such as supply voltage, gain, and input signal range, the tool detects saturation and recommends in-amps for which the input signal is in-range and the configuration is valid. Avoid saturation, find the best in-amp for your design, and save time.
Latest Resources
Application Notes
Technical Articles
- Discussion Between CareFusion and Analog Devices: Optimizing Performance and Lowering Power in an EEG Amplifier
- Mitigation Strategies for ECG Design Challenges
- Predicting and Finding Your Limits!
- Micropower ICs Take the Heartburn Out of Heart Rate Monitor Designs
- Simple Discreet SE-to-Differential Precision In-Amp Circuit: High Common-Mode Input Range and 50% Less Power
- MS-2317: Designing High Performance Systems with Low Noise Instrumentation Amplifiers PDF
- Part 2: Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards
- Part 1: Simplifying Design of Industrial Process-Control Systems with PLC Evaluation Boards
- High-performance Adder Uses Instrumentation Amplifiers
- Medical Devices Get A Prescription For Wafer-Level Chip-Scale Packaging
- Two Instrumentation Amps Make Accurate Voltage-to-Current Source
Product Selection Guide
User Guides
- UG-513: Evaluating the AD8237 Micropower, Zero Drift, True Rail-to-Rail Instrumentation Amplifier and the AD8420 Wide Supply Range, Micropower, Rail-to-Rail Instrumentation Amplifier PDF
- UG-311: Reliability Handbook PDF
- UG-261: Evaluation Boards for the AD62x, AD822x and AD842x Series PDF
- UG-181: PLC Demo System, Industrial Process Control Demo System (Rev. A) PDF
Evaluation Documentation
Circuit Notes
Technical Books
Solutions Bulletins & Brochures
Videos
- How to Simplify Your Wearable Design
- How to Simplify Your Wearable Design
- Complete System for Precision Impedance Measurements
- Power Scaling in Strain Gauge Applications
- Condition Monitoring Solutions for Wind Turbines
- Instrumentation Amplifier Enables Remote Strain Gauge
- Input Range of an Instrumentation Amplifier
- Noise of an Instrumentation Amplifier Circuit
- ADI Demo Series, Topic1: Using the Diamond Plot Tool
- Analog Devices: Battery Formation & Test Capabilities
- Instrumentation Amplifier Diamond Plot Tool - BETA
- Intelligent Automotive In-Cabin Sensing
Tutorials
- MT-070: In-Amp Input RFI Protection PDF
- MT-066: In-Amp Bridge Circuit Error Budget Analysis PDF
- MT-061: Instrumentation Amplifier (In-Amp) Basics PDF
- MT-226: An Engineering Manager’s First Experience with Multisim PDF
- MT-062: Basic Two Op Amp In-Amp Configuration PDF
- MT-067: Auto-Zero In Amps PDF
- MT-069: In-Amp Input Overvoltage Protection PDF
- MT-065: In-Amp Noise PDF
- MT-064: In-Amp DC Error Sources PDF
- MT-063: Basic Three Op Amp In-Amp Configuration PDF
Press Releases
Analog Dialogue
Frequently Asked Questions
- What is input voltage range and how is it determined?
- How does the input offset voltage (V_{OS}) of an amplifier affect my circuit?
- How does the input bias current of an amplifier affect my circuit?
- Why is my amplifier oscillating?
- What is meant by the noise gain of an amplifier?
- My reference voltage changes when I connect it to the amplifier's input?
- What is the output headroom or voltage range of an amplifier and how is it determined?
- What does single-supply amplifer really mean?
- Why can't I get my amplifier to go to my full-scale output voltage?
- What is a rail-to-rail amplifier?
- How does input current noise affect my amplifier circuit?
- What is the full power bandwidth of an amplifier?
- I'm applying a dc voltage to the input of my amplifier, but I'm getting an oscillating signal out. What can be causing this?
- Why doesn't my amplifier output go to zero when I ground the input?
- Can I exceed the parameters specified in the absolute maximum ratings table?
- What is the small signal bandwidth of an amplifier?
- How does the open-loop gain of an amplifier affect my circuit?
- Why does the output signal of my amplifier look like a triangle, when I have a sine wave input?
- What is unity-gain bandwidth?
- What is amplifier RF rectification?
- Why is my output signal clipping?
- Why is my input signal clipping?
- I have a large unexplained offset in my circuit. What can be causing it?
- How does the input voltage noise of an amplifier affect my circuit?
- What is input common-mode voltage range (CMVR)?
- What are op amp input and output common-mode and differential voltage ranges and how are they determined?
Instrumentation Amplifiers
SortOrder | Part# | # of Amps | Vos (max) (V) | Vos TC (max) (V/°C) | Gain Set | Gain (min) (V/V) | Gain (max) (V/V) | BW - low gain (typ) (Hz) | Ibias (max) (A) | Iq/Amp (max) (A) | Vs span (min) (V) | Vs span (max) (V) | Input Voltage Noise (typ) (V/rtHz) | Price (1000+) ($ US) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | ADA4558 | 2 | 20µ | 10n | Digital | 2.94 | 971.1 | 550k | - | 8.2m | 6 | 18 | - | $3.35 (ADA4558WHCPZ-R7) |
2 | AD8233 | 1 | 6m | - | Resistor | 100 | 1100 | 1k | 200p | 70µ | 1.7 | 3.5 | 150n | $1.49 (AD8233ACBZ-R7) |
3 | AD8422 | 1 | 25µ | 300n | Resistor | 1 | 1000 | 2.2M | 500p | 300µ | 4.6 | 36 | 8n | $2.10 (AD8422ARMZ) |
4 | AD8232 | 1 | 8m | 10µ | Fixed Gain | 100 | 100 | 2k | 200p | 230µ | 2 | 3.5 | 100n | $1.36 (AD8232ACPZ-R7) |
5 | AD8237 | 1 | 75µ | 300n | Resistor | 1 | 1000 | 200k | 650p | 130µ | 1.8 | 5.5 | 68n | $0.93 (AD8237ARMZ) |
6 | AD8421 | 1 | 25µ | 200n | Resistor | 1 | 1000 | 10M | 1n | 2.3m | 5 | 36 | 3n | $2.35 (AD8421ARMZ) |
7 | AD8420 | 1 | 150µ | 1µ | Resistor | 1 | 1000 | 250k | 27n | 100µ | 2.7 | 36 | 55n | $0.89 (AD8420ARMZ) |
8 | AD8428 | 1 | 25µ | 300n | Fixed Gain | 2000 | 2000 | 3.5M | 50n | 6.8m | 8 | 36 | 1.3n | $6.60 (AD8428ARZ) |
9 | AD8426 | 2 | 100µ | 1µ | Resistor | 1 | 1000 | 1.5M | 30n | 425µ | 2.2 | 36 | 24n | $2.20 (AD8426ACPZ-R7) |
10 | AD8429 | 1 | 50µ | 300n | Resistor | 1 | 10000 | 15M | 150n | 7m | 8 | 36 | 1n | $3.50 (AD8429ARZ) |
11 | AD8229 | 1 | 100µ | 1µ | Resistor | 1 | 1000 | 15M | 70n | 7m | 8 | 34 | 1n | $150.00 (AD8229HRZ) |
12 | AD8235 | 1 | 2.5m | 700n | Resistor | 5 | 200 | 23k | 50p | 40µ | 1.8 | 5.5 | 76n | $1.59 (AD8235ACBZ-P7) |
13 | AD8236 | 1 | 3.5m | 2.5µ | Resistor | 5 | 200 | 23k | 10p | 40µ | 1.8 | 5.5 | 76n | $0.99 (AD8236ARMZ) |
14 | AD8227 | 1 | 100µ | 1µ | Resistor | 5 | 1000 | 250k | 27n | 425µ | 2.2 | 36 | 24n | $1.04 (AD8227ARMZ) |
15 | AD8226 | 1 | 50µ | 1µ | Resistor | 1 | 1000 | 1.5M | 27n | 425µ | 2.2 | 36 | 22n | $1.10 (AD8226ARMZ) |
16 | AD8295 | 1 | 60µ | 300n | Resistor | 1 | 1000 | 1.2M | 800p | 2.3m | 4.6 | 36 | 8n | $2.89 (AD8295ACPZ-R7) |
17 | AD8223 | 1 | 100µ | 1µ | Resistor | 5 | 1000 | 125k | 25n | 500µ | 3 | 24 | 30n | $1.05 (AD8223ARZ) |
18 | AD8293G80 | 1 | 50µ | 300n | Fixed Gain | 80 | 80 | 500k | 2n | 1.3m | 1.8 | 5.5 | 35n | $0.50 (AD8293G80ARJZ-R7) |
19 | AD8293G160 | 1 | 50µ | 300n | Fixed Gain | 160 | 160 | 500k | 2n | 1.3m | 1.8 | 5.5 | 35n | $0.50 (AD8293G160ARJZ-R7) |
20 | AD8253 | 1 | 1.05m | 6.2µ | Digital | 1 | 1000 | 10M | 50n | 5.3m | 10 | 30 | 10n | $4.95 (AD8253ARMZ) |
21 | AD8228 | 1 | 50µ | 800n | Pin Strap | 10 | 100 | 650k | 600p | 1m | 4.6 | 36 | 8n | $3.03 (AD8228ARMZ) |
22 | AD8557 | 1 | 12µ | 65n | Digital | 28 | 1300 | 600k | 25n | - | 2.7 | 5.5 | 32n | $2.19 (AD8557ARZ) |
23 | AD8290 | 1 | 935m | 300µ | Fixed Gain | 50 | 50 | 250 | 1n | 1.8m | 2.6 | 5.5 | - | $1.52 (AD8290ACPZ-R7) |
24 | AD8251 | 1 | 800µ | 6.2µ | Digital | 1 | 8 | 10M | 30n | 4.5m | 10 | 34 | 18n | $5.01 (AD8251ARMZ) |
25 | AD8231 | 1 | 15µ | 50n | Digital | 1 | 128 | 2.7M | 500p | 5m | 3 | 6 | 32n | $1.71 (AD8231ACPZ-R7) |
26 | AD8213 | 2 | 2.2m | 12µ | Fixed Gain | 20 | 20 | 500k | - | 4.5m | 4.5 | 5.5 | 70n | $2.01 (AD8213YRMZ) |
27 | AD8250 | 1 | 800µ | 6.2µ | Digital | 1 | 10 | 10M | 30n | 4.5m | 10 | 30 | 18n | $5.01 (AD8250ARMZ) |
28 | AD8224 | 2 | 175µ | 5µ | Resistor | 1 | 1000 | 1.5M | 10p | 800µ | 4.5 | 36 | 14n | $4.17 (AD8224ACPZ-R7) |
29 | AD8222 | 2 | 60µ | 300n | Resistor | 1 | 10000 | 1.2M | 1n | 1.1m | 4.6 | 36 | 8n | $3.73 (AD8222HACPZ-R7) |
30 | AD8220 | 1 | 125µ | 5µ | Resistor | 1 | 1000 | 1.5M | 25p | 750µ | 4.5 | 36 | 14n | $2.55 (AD8220ARMZ) |
31 | AD8553 | 1 | 375µ | 3µ | Resistor | 1 | 1000 | 1k | 1n | 1.2m | 1.8 | 5.5 | 30n | $1.32 (AD8553ARMZ) |
32 | AD8556 | 1 | 12µ | 65n | Digital | 70 | 1280 | 280k | 54n | 2.7m | 5 | 5.5 | 32n | $2.97 (AD8556ARZ) |
33 | AD8230 | 1 | 10µ | 50n | Resistor | 2 | 1000 | 2k | 1n | 4m | 8 | 16 | 240n | $2.99 (AD8230YRZ) |
34 | LTC6915 | 1 | 10µ | 50n | Digital | 1 | 4096 | 200k | 10n | 1.6m | 2.7 | 11 | 50n | $2.44 (LTC6915CDE#PBF) |
35 | AD8221 | 1 | 25µ | 300n | Resistor | 1 | 1000 | 825k | 400p | 1m | 4.6 | 36 | 8n | $2.21 (AD8221ARMZ) |
36 | LTC6800 | 1 | 100µ | 250n | Resistor | 1 | - | 200k | 10n | 1.2m | 2.7 | 5.5 | 50n | $1.55 (LTC6800HMS8#PBF) |
37 | AD8225 | 1 | 150µ | 2µ | Fixed Gain | 5 | 5 | 900k | 1.2n | 1.2m | 3.4 | 36 | 45n | $3.36 (AD8225ARZ) |
38 | LT1789-10 | 1 | 3m | 700n | Resistor | 10 | 1000 | 60k | 40n | 95µ | 2.2 | 36 | 48n | $3.20 (LT1789CS8-10#PBF) |
39 | LT1789-1 | 1 | 750µ | 700n | Resistor | 1 | 1000 | 60k | 40n | 95µ | 2.2 | 36 | 48n | $3.20 (LT1789CS8-1#PBF) |
40 | LTC2053-SYNC | 1 | 10µ | 50n | Resistor | 1 | - | 200k | 10n | 1.3m | 2.7 | 11 | 50n | $3.90 (LTC2053IMS8-SYNC#PBF) |
41 | LTC2053 | 1 | 10µ | 50n | Resistor | 1 | - | 200k | 10n | 1.3m | 2.7 | 11 | 50n | $3.20 (LTC2053CMS8#PBF) |
42 | LT1168 | 1 | 40µ | 300n | Resistor | 1 | 10000 | 400k | 250p | 530µ | 4.6 | 40 | 10n | $3.70 (LT1168CN8#PBF) |
43 | LT1920 | 1 | 125µ | 1µ | Resistor | 1 | 10000 | 800k | 2n | 1.3m | 4.6 | 40 | 7.5n | $3.05 (LT1920CN8#PBF) |
44 | AD627 | 1 | 125µ | 1µ | Resistor | 5 | 1000 | 80k | 10n | 85µ | 2.2 | 36 | 38n | $2.87 (AD627ARZ) |
45 | LT1167-1 | 1 | 40µ | 300n | Resistor | 1 | 10000 | 1M | 350p | 1.3m | 4.6 | 40 | 7.5n | $3.20 (LT1167CS8-1#PBF) |
46 | LT1167 | 1 | 40µ | 300n | Resistor | 1 | 10000 | 1M | 350p | 1.3m | 4.6 | 40 | 7.5n | $3.20 (LT1167CN8#PBF) |
47 | AD623 | 1 | 100µ | 1µ | Resistor | 1 | 1000 | 800k | 25n | 550µ | 2.7 | 12 | 35n | $1.60 (AD623ARMZ) |
48 | AD622 | 1 | 125µ | 1µ | Resistor | 1 | 1000 | 1M | 5n | 1.3m | 5.2 | 36 | 12n | $2.94 (AD622ARZ) |
49 | AMP04 | 1 | 400µ | 3µ | Resistor | 1 | 1000 | 700k | 30n | 900µ | 5 | 36 | 270n | $6.44 (AMP04FSZ) |
50 | AD621 | 1 | 125µ | 1.5µ | Pin Strap | 10 | 100 | 800k | 1n | 1.3m | 4.6 | 36 | 9n | $4.79 (AD621ARZ) |
51 | AD620 | 1 | 50µ | 600n | Resistor | 1 | 10000 | 1M | 1n | 1.3m | 4.6 | 36 | 9n | $3.91 (AD620ARZ) |
52 | LT1102 | 1 | 600µ | 8µ | Fixed Gain | 10 | 100 | 35M | 40p | 5m | 18 | 40 | 19n | $4.75 (LT1102CN8#PBF) |
53 | LTC1100 | 1 | 10µ | 100n | Fixed Gain | 10 | 100 | 1.8M | 50p | 2.8m | 4 | 18 | 35n | $6.15 (LTC1100CN8#PBF) |
54 | AMP02 | 1 | 100µ | 2µ | Resistor | 1 | 10000 | 1.2M | 10n | 6m | 9 | 36 | 9n | $7.08 (AMP02FSZ) |
55 | LT1101 | 1 | 160µ | 2µ | Fixed Gain | 10 | 100 | 370k | 8n | 130µ | 2.3 | 44 | 43n | $4.75 (LT1101CN8#PBF) |
56 | AD526 | - | 500µ | 3µ | - | 1 | 16 | 350k | - | - | 9 | 33 | 30n | $10.40 (AD526JNZ) |
57 | AD625 | 1 | 25µ | 250n | Resistor | 1 | 10000 | 650k | 15n | 5m | 12 | 36 | 4n | $14.28 (AD625JNZ) |
58 | AMP01 | 1 | 100µ | 1µ | Resistor | 0.1 | 10000 | 570k | 4n | 4.8m | 9 | 36 | 5n | $12.53 (AMP01GSZ) |
59 | AD624 | 1 | 25µ | 250n | Pin Strap | 1 | 1000 | 1M | 50n | 5m | 12 | 36 | 4n | $31.60 (AD624ADZ) |
60 | AD524 | 1 | 50µ | 500n | Pin Strap | 1 | 1000 | 1M | 15n | 5m | 12 | 36 | 7n | $12.04 (AD524ARZ-16) |
61 | AD522 | - | 200µ | 25µ | - | - | - | 30k | - | - | 10 | 36 | 15µ | $701.52 (AD522SD/883B) |