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AD8276:  Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifier

The AD8276 is a general-purpose unity-gain difference amplifier intended for precision signal conditioning in power critical applications that require both high performance and low power. The AD8276 provides 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 ...More

AD8276:  Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifier

Product Description

The AD8276 is a general-purpose unity-gain difference amplifier intended for precision signal conditioning in power critical applications that require both high performance and low power. The AD8276 provides 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 common-mode rejection ratio. They also have outstanding gain temperature coefficient.

The amplifier’s common-mode range extends to almost double the supply voltage, making it ideal for single-supply applications that require a high common-mode voltage range.

The AD8276 is unity-gain stable. Intended as a difference amplifier, it can also be connected in a high precision, single-ended configuration with G = −1, +1, +2, or +½.

The AD8276 operates on single supplies (2.5 V to 36 V) or dual supplies (±2 V to ±18 V). The maximum quiescent supply current is 220 μA, which makes it ideal for battery operated and portable systems.

The AD8276 is available in the space-saving 8-lead MSOP and SOIC packages. It is specified for performance over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant.

Applications

  • Voltage measurement and monitoring
  • Current measurement and monitoring
  • Instrumentation amplifier building block
  • Differential output instrumentation amplifier
  • Portable, battery-powered equipment
  • Medical instrumentation
  • Test and measurement

RESOURCES & TOOLS

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  • Wide input range
  • Rugged input overvoltage protection
  • Low supply current: 220 μA maximum
  • Low power dissipation: 0.55 mW at VS = 2.5 V
  • Bandwidth: 550 kHz
  • CMRR: 86 dB minimum, dc to 5 kHz
  • Low offset voltage drift: ±2 μV/°C maximum (AD8276B)
  • Please see data sheet for additional features.
  • Single/Dual Supply: Single/Dual
  • Gain Setting Method: fixed
  • Gain Range (min to max): 1
  • CMRR (dB): 86dB
  • Temperature Range: -40 to +125
  • Gain Error (%) max: +0.02%
  • Supply Current : 0.2mA
  • Package: MSOP,SOIC
  • Vosi (µV): 200µV

Functional Block Diagram for AD8276

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AD624 Precision IA Dual 12V to 36V Pin 150 1 1,000 70dB 110dB 0.3 $15.87
AD625 Programmable Gain IA Dual 12V to 36V Resistor 400 1 10,000 70dB 110dB 0.3 $8.78
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