The AT821 is a low-voltage, ultra-low-power CMOS operational amplifier featuring rail-to-rail input and output operation with a 14MHz gain-bandwidth product. It operates from a 2.5V to 5.5V supply, making it well suited for sensor interfaces, photodiode amplification, active filters, and portable equipment.
The AT821 offers a ±0.6mV typical input offset with 1.6µV/°C drift and rail-to-rail I/O. Input terminals are diode-clamped to within 0.5V beyond the supply rails, and the device is unity-gain stable with ultra-low input bias current (1pA typical). It is specified over the −40°C to +125°C industrial and automotive temperature range.
Specifications
Supply Voltage
2.5V to 5.5V
Gain Bandwidth (GBW)
14MHz
Input Offset Voltage
±0.6mV (Typ)
Input Offset Drift
1.6µV/°C (Typ)
Slew Rate
10V/µs
Quiescent Current
1.9mA/Amplifier (Typ)
Input/Output
Rail-to-Rail I/O
Package
SOT23-5
Operating Temperature
−40°C to +125°C
Weight
0.01 lbs
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