Datasheet ADA4691-2, ADA4691-4, ADA4692-2, ADA4692-4 (Analog Devices)

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Low Power, 3.6 MHz, Low Noise, Rail-to- Rail Output, Operational Amplifiers ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 FEATURES
The ADA4691/ADA4692 family is fully specified over the extended
Low power: 180 μA typical
industrial temperature range (−40°C to +125°C). The ADA4691-2
Very low input bias currents: 0.5 pA typical
is available in a 10-lead LFCSP and a 9-ball WLCSP. The ADA4692-2
Low noise: 16 nV/√Hz typical
is available in an 8-lead SOIC and 8-lead LFCSP. The ADA4691-4 is
3.6 MHz bandwidth
available in a 16-lead LFCSP. The ADA4692-4 is available in a 14-lead
Offset voltage: 500 μV typical
TSSOP. For pin configurations, see the Pin Configurations section.
Low offset voltage drift: 4 μV/°C maximum Low distortion: 0.003% THD + N 2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply 1 Available in very small 2 mm × 2 mm LFCSP packages ADA4692-2 VSY = ±2.5V APPLICATIONS AV = –1 TA = 25°C Photodiode amplifiers Sensor amplifiers 0.1 ) Portable medical and instrumentation % ( Portable audio: MP3s, PDAs, and smartphones N RL = 600Ω + D Communications TH RL = 2kΩ Low-side current sense 0.01 ADC drivers Active filters Sample-and-hold GENERAL DESCRIPTION 0.001
2
10 100 1k 10k 20k
14 0- The ADA4691-2/ADA4692-2 are dual and the ADA4691-4/
FREQUENCY (Hz)
95 07 ADA4692-4 are the quad rail-to-rail output, single-supply Figure 1. THD + Noise vs. Frequency amplifiers featuring low power, wide bandwidth, and low noise.
–80 ADA4692-2
The ADA4691-2 has two independent shutdown pins, allowing
VSY = ±2.5V
further reduction in supply current. The ADA4691-4 is a quad
V –90 IN = 2.8V p-p AV = +1
with dual shutdown pins each controlling a pair of amplifiers
B) T d A = 25°C
and is available in the 16-lead LFCSP. The ADA4692-4 is a quad
N ( –100 IO
version without shutdown.
RAT A –110
These amplifiers are ideal for a wide variety of applications.
P E S
Audio, filters, photodiode amplifiers, and charge amplifiers, all
L E –120
benefit from this combination of performance and features. Additional applications for these amplifiers include portable
CHANN –130
consumer audio players with low noise and low distortion that provide high gain and slew rate response over the audio band at
–140
low power. Industrial applications with high impedance sensors,
100 1k 10k 100k
41 1 0- such as pyroelectric and IR sensors, benefit from the high
FREQUENCY (Hz)
95 07 impedance and low 0.5 pA input bias, low offset drift, and Figure 2. Channel Separation vs. Frequency enough bandwidth and response for low gain applications.
Table 1. Micropower Low Power Low Power with Shutdown Standard Op Amp With Shutdown High Bandwidth
Single AD8613 AD8591 AD8691 Dual AD8617 ADA4692-2 ADA4691-2 AD8592 AD8692 Quad AD8619 ADA4692-4 ADA4691-4 AD8594 AD8694
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS—2.7 V OPERATION ELECTRICAL CHARACTERISTICS—5 V OPERATION ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS TYPICAL PERFORMANCE CHARACTERISTICS SHUTDOWN OPERATION INPUT PIN CHARACTERISTICS INPUT THRESHOLD OUTLINE DIMENSIONS ORDERING GUIDE