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AD8277

Analog Devices
Part Number AD8277
Manufacturer Analog Devices
Description (AD8276 / AD8277) Low Cost Unity-Gain Difference Amplifiers
Published Oct 5, 2009
Detailed Description Data Sheet Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers AD8276/AD8277 FEATURES Wide input r...
Datasheet PDF File AD8277 PDF File

AD8277
AD8277


Overview
Data Sheet Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers AD8276/AD8277 FEATURES Wide input range beyond supplies Rugged input overvoltage protection Low supply current: 200 μA maximum per channel Low power dissipation: 0.
5 mW at VS = 2.
5 V Bandwidth: 550 kHz CMRR: 86 dB minimum, dc to 10 kHz Low offset voltage drift: ±2 μV/°C maximum (B Grade) Low gain drift: 1 ppm/°C maximum (B Grade) Enhanced slew rate: 1.
1 V/μs Wide power supply range: Single supply: 2 V to 36 V Dual supplies: ±2 V to ±18 V APPLICATIONS Voltage measurement and monitoring Current measurement and monitoring Differential output instrumentation amplifier Portable, battery-powered equipment Test and measurement GENERAL DESCRIPTION The AD8276/AD8277 are general-purpose, unity-gain difference amplifiers intended for precision signal conditioning in power critical applications that require both high performance and low power.
They provide exceptional common-mode rejection ratio (86 dB) and high bandwidth while amplifying signals well beyond the supply rails.
The on-chip resistors are laser-trimmed for excellent gain accuracy and high CMRR.
They also have extremely low gain drift vs.
temperature.
The common-mode range of the amplifiers extends to almost double the supply voltage, making these amplifiers ideal for singlesupply applications that require a high common-mode voltage range.
The internal resistors and ESD circuitry at the inputs also provide overvoltage protection to the op amps.
The AD8276/AD8277 are unity-gain stable.
While they are optimized for use as difference amplifiers, they can also be connected in high precision, single-ended configurations with G = −1, +1, +2.
The AD8276/AD8277 provide an integrated precision solution that has smaller size, lower cost, and better performance than a discrete alternative.
The AD8276/AD8277 operate on single supplies (2.
0 V to 36 V) or dual supplies (±2 V to ±18 V).
The maximum quiescent supply current is 200 μA per channel, w...


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