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The AD8629WARZ is an automotive-grade zero-drift dual-channel operational amplifier housed in an 8-SOIC package. The device is AEC-Q100 certified (extended temperature range from -40 °C to +125 °C) and incorporates an internal auto-zero circuit, enabling 1 µV-level input offset voltage and ultra-low drift of 0.002 µV/°C without the need for external capacitors. It is ideal for high-precision, low-noise, and low-power automotive and industrial signal conditioning applications.

AD8629WARZ Features

Lowest noise auto-zero amplifier

Low offset voltage: 1 µV

Input offset drift: 0.002 µV/°C

Rail-to-rail input and output swing

5 V single-supply operation

High gain, high common-mode rejection ratio (CMRR), and high power supply rejection ratio (PSRR): 130 dB

Extremely low input bias current: 100 pA (maximum)  

Low supply current: 1.0 mA  

Overload recovery time: 50 μs  

No external components required  

Automotive application certified

AD8629WARZ Specifications  

Number of channels: 2  

Input offset voltage: 1 µV (typical)  

Input offset drift: 0.002 µV/°C

Gain-bandwidth product: 2.5 MHz  

Slew rate: 1 V/µs  

Input noise: 22 nV/√Hz  

Input bias current: 30 pA  

Quiescent current: 1.1 mA per channel  

Output current: ±30 mA  

Supply voltage range: 2.7 V to 5.5 V single supply / ±1.35 V to ±2.5 V dual supply

Operating temperature: -40 °C to +125 °C  

Package: 8-SOIC (3.9 mm wide)

AD8629WARZ Applications  

Automotive sensors  

Pressure and position sensors  

Strain gauge amplifiers  

Medical instruments  

Thermocouple amplifiers  

Precision current sensing  

Photodiode amplifiers

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