The AD622 is a low cost, moderately accurate instrumentation amplifier in the traditional pin configuration that requires only one external resistor to set any gain between 2 and 1000. For a gain of 1, no external resistor is required. The AD622 is a complete difference or subtractor amplifier system that also provides superior linearity and common-mode rejection by incorporating precision laser-trimmed resistors.
The AD622 replaces low cost, discrete, two or three op amp instrumentation amplifier designs and offers good common-mode rejection, superior linearity, temperature stability, reliability, power, and board area consumption. The low cost of the AD622 eliminates the need to design discrete instrumentation amplifiers to meet stringent cost targets. While providing a lower cost solution, it also provides performance and space improvements.
Features and Benefits(Gain range: 2 to 1000) 0.15% gain accuracy: G = 1 125 μV maximum input offset voltage 1.0 μV/°C maximum input offset drift 5 nA maximum input bias current 66 dB minimum common-mode rejection ratio: G = 1 12 nV/√Hz @ 1 kHz input voltage noise 0.60 μV p-p noise: 0.1 Hz to 10 Hz, G = 10 800 kHz bandwidth: G = 10 10 μs settling time to 0.1% @ G = 1 to 100 1.2 V/μs slew rate | Amplifiers |
| Document | note |
| AD622: Low Cost Instrumentation Amplifier Data Sheet (Rev. E) | PDF 151 kB |
| Document | note |
| UG-261: Evaluation Boards for the AD62x, AD822x and AD842x Series | PDF 604 kB |
| Document | note |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD8225ARZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 3.96 | 3.36 | Y |
| AD8225ARZ-R7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 3.96 | 3.36 | Y |
| AD8225ARZ-RL Production | 8 ld SOIC | REEL 2500 | -40 to 85C | 3.96 | 3.36 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| AD8225-EVALZ | Evaluation Board | 74.58 | Y |
