AD820ARZ | ANALOG DEVICES

Precision amplifier, AD820ARZ, ANALOG DEVICES

The AD820ARZ is a precision, low power FET input op amp that can operate from a single supply of 5 V to 36 V, or dual supplies of ±2.5 V to ±18 V. It has true single-supply capability, with an input voltage range extending below the negative rail, allowing the AD820ARZ to accommodate input signals below ground in the single-supply mode. Output voltage swing extends to within 10 mV of each rail, providing the maximum output dynamic range. Offset voltage of 800 μV maximum, offset voltage drift of 2 μV/°C, typical input bias current below 25 pA, and low input voltage noise provide dc precision with source impedance up to 1 GΩ. 1.8 MHz unity gain bandwidth,-93 dB THD at 10 kHz, and 3 V/μs slew rate are provided for a low supply current of 800 μA. The AD820ARZ drives up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA. This allows the amplifier to handle a wide range of load condition. This combination of ac and dc performance, plus the outstanding load drive capability, results in an exceptionally versatile amplifier for the single-supply user.

Features

• True single-supply operation
• Output swings rail-to-rail
• Input voltage range extends below ground
• Excellent load drive
• Excellent ac performance for low power
• Excellent dc performance

Applications

• Battery-powered precision instrumentation
• Photodiode preamps
• Active filters
• Medical instrumentation
• Low power references and regulators