ADA4255 Description
The ADA4255 is a precision programmable gain instrumentation amplifier (PGIA) with integrated bipolar charge pumps. With its integrated charge pumps, the ADA4255 internally produces the high voltage bipolar supplies needed to achieve a wide input voltage range (38 V typical with VDDCP = 5 V) without lowering input impedance. The charge pump topology of the ADA4255 allows channels to be isolated with only low voltage...
ADA4255 Key Features
- Integrated bipolar charge pump
- Simplified isolation requirements
- Wide input range on low voltage supplies
- Dedicated output amplifier supplies for ADC protection
- Low power: 83 mW (DVDD = 3 V, VDDCP = 5 V)
- 36 precision gains from 1/16 V/V to 176 V/V
- Robust ±60 V protected 2:1 input multiplexer
- Excellent dc precision
- Low input offset voltage: ±14 μV maximum
- Low input offset voltage drift: ±0.08 μV/°C maximum