ADA4691-2

The ADA4691-2 belongs to ADA4691/ADA4692 family which is fully specified over the extended industrial temperature range (-40°C to +125°C). ADA4691-2 is available in a 10-lead LFCSP and a 9-ball WLCSP. The ADA4691-2 has two independent shutdown pins, allowing further reduction in supply current. Additional applications for these amplifiers include portable consumer audio players with low noise and low distortion that provide high gain and slew rate response over the audio band at low power. Industrial applications with high impedance sensors, such as pyroelectric and IR sensors, benefit from the high impedance and low 0.5 pA input bias, low offset drift, and enough bandwidth and response for low gain applications. The ADA4691-4 is a quad with dual shutdown pins each controlling a pair of amplifiers and is available in the 16-lead LFCSP. The ADA4692-4 is a quad version without shutdown. These amplifiers are ideal for a wide variety of applications. Audio, filters, photodiode amplifiers, and charge amplifiers, all benefit from this combination of performance and features.

The features of ADA4691-2 can be summarized as (1)low power: 180 A typical; (2)very low input bias currents: 0.5 pA typical; (3)low noise: 16 nV/Hz typical; (4)3.6 MHz bandwidth; (5)offset voltage: 500 V typical; (6)low offset voltage drift: 4 V/°C maximum; (7)low distortion: 0.003% THD + N; (8)2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply; (9)available in very small 2 mm * 2 mm LFCSP packages.

The absolute maximum ratings of ADA4691-2 are (1)supply voltage: 6 V; (2)input voltage: VS 0.3 V to VDD + 0.3 V; (3)input current: ±10 mA; (4)shutdown pin rise/fall times: 50 s maximum; (5)differential input voltage: ±VSY; (6)output short-circuit duration to GND: Indefinite; (7)storage temperature range: -65°C to +150°C; (8)operating temperature range: -40°C to +125°C; (9)junction temperature range: -65°C to +150°C; (10)lead temperature (Soldering, 60 sec): 300°C .