AD8667

Data Sheet Low Noise, Precision, 16 V, CMOS, Rail-to-Rail Operational Amplifiers AD8663/AD8667/AD8669 06742-002 06742-004 FEATURES Low offset voltage: 175 μV maximum @ VSY = 5 V Low supply current: 275 μA maximum per amplifier Single-supply operation: 5 V to 16 V Low noise: 23 nV/√Hz Low input bias current: 300 fA Unity-gain stable Small packages available 3 mm × 3 mm, 8-lead LFCSP 8-lead MSOP Other packages 8-lead SOIC 14-lead SOIC 14-lead TSSOP APPLICATIONS Sensor front ends Transimpedance amplifiers Electrometer applications Photodiode amplification Low power ADC drivers Medical diagnostic instruments pH and ORP meters and probes DAC or REF buffers GENERAL DESCRIPTION The AD8663/AD8667/AD8669 are rail-to-rail output amplifiers that use the Analog Devices, Inc., patented DigiTrim® trimming technique to achieve low offset voltage. The AD8663/AD8667/ AD8669 feature an extended operating range with supply voltages up to 16 V. They also feature low input bias current, low input offset voltage, and low current noise. The combination of low offset, very low input bias current, and a wide supply range makes these amplifiers useful in a wide variety of applications usually associated with higher priced JFET amplifiers. Systems using high impedance sensors, such as photodiodes, benefit from the combination of low input bias current, low noise, low offset, and wide bandwidth. The ability to operate the device for single (5 V to 16 V) or dual supplies (±2.5 V to ±8 V) supports man...