ADA4691-2 Datasheet, PDF (1/16 Pages) Analog Devices – Dual, Low Power, Wideband, Low Noise, Rail-to-Rail Output, Operational Amplifiers

Dual, Low Power, Wideband, Low Noise,
Rail-to-Rail Output, Operational Amplifiers
ADA4691-2/ADA4692-2
FEATURES
Low power: 200 μA typical, 250 μA maximum
Low distortion: 0.003% THD + N
Low noise: 16 nV/√Hz typical
3.9 MHz bandwidth
Slew rate: 1.4 V/μs typical
Offset voltage: 500 μV typical
Low offset voltage drift: 4 μV/°C maximum
Very low input bias currents: 0.5 pA typical
2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply
APPLICATIONS
Portable audio: MP3, PDA, smart phone, notebook
Portable instrumentation
Portable medical devices
Photodiode amplifiers
Sensor amplifiers
Low-side current sense
ADC drivers
Active filters
Sample-and-hold
Automotive sensors
PIN CONFIGURATIONS
OUT A 1
8 V+
–IN 2 ADA4692-2 7 OUT B
+IN 3 TOP VIEW 6 –IN B
V– 4 ^{(Not to Scale)} 5 +IN B
Figure 1. 8-Lead SOIC_N (R-8)
–IN A 1
+IN A 2
V– 3
ADA4691-2
TOP VIEW
(Not to Scale)
8 OUT B
7 –IN B
6 +IN B
Figure 2. 10-Lead LFCSP (CP-10-11)
GENERAL DESCRIPTION
The ADA4691-2 and ADA4692-2 are dual, rail-to-rail output,
single-supply amplifiers featuring low power, wide bandwidth,
and low noise. The ADA4691-2 has two independent shutdown
pins, allowing further reduction in supply current. These
amplifiers are ideal for a wide variety of applications. Audio
preamps, filters, IR/photodiode amplifiers, charge amps, and
high impedance sensors all benefit from this combination of
performance features.
Applications for these amplifiers include consumer audio
personal players with low noise and low distortion that provide
enough gain and slew rate response over the audio band at low
power. Industrial applications with high impedance sensors,
such as pyroelectric sensors and other IR sensors, benefit from
the high impedance input, low offset drift, and enough
bandwidth and response for low gain applications.
The ADA4691-2 and ADA4692-2 are specified over the extended
industrial temperature range (−40°C to +125°C). The ADA4691-2
is available in a 10-lead LFCSP package, and the ADA4692-2 is
available in an 8-lead SOIC package.
Rev. A
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