AD8277ARZ-R7

低功耗，宽电源电压范围，低成本单位增益差分放大器 Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers

Product Details

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 single-supply 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, which is ideal for battery-operated and portable systems.

The AD8276 is available in the space-saving 8-lead MSOP and SOIC packages, and the AD8277 is offered in a 14-lead SOIC package. Both are specified for performance over the industrial temperature range of −40°C to +85°C and are fully RoHS compliant.

**Applications**

.

Voltage measurement and monitoring

.

Current measurement and monitoring

.

Differential output instrumentation amplifier

.

Portable, battery-powered equipment

.

Test and measurement

### Features and Benefits

.

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

.

Please see data sheet for additional features.