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 Data Sheet ADA4691-2/ ADA4691-4/ ADA4692-2/ ADA4692-4 FEATURES
The ADA4691/ADA4692 family is fully specified over the
Low power: 180 μA typical
extended industrial temperature range (−40°C to +125°C).
Very low input bias currents: 0.5 pA typical
The ADA4691-2 is available in a 10-lead LFCSP and a 9-ball
Low noise: 16 nV/√Hz typical
WLCSP. The ADA4692-2 is available in an 8-lead SOIC and 8-lead
3.6 MHz bandwidth
LFCSP. The ADA4691-4 is available in a 16-lead LFCSP. The
Offset voltage: 500 μV typical
ADA4692-4 is available in a 14-lead TSSOP. For pin configurations,
Low offset voltage drift: 4 μV/°C maximum
see the Pin Configurations section.
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 A APPLICATIONS V = –1 TA = 25°C Photodiode amplifiers 0.1 Sensor amplifiers ) Portable medical and instrumentation (% N RL = 600Ω Portable audio: MP3s, PDAs, and smartphones + HD Communications T RL = 2kΩ 0.01 Low-side current sense ADC drivers Active filters Sample-and-hold 0.001 GENERAL DESCRIPTION 10 100 1k 10k 20k
2 14 0-
FREQUENCY (Hz)
95 The ADA4691-2/ADA4692-2 are dual and the ADA4691-4/ 07 Figure 1. THD + Noise vs. Frequency ADA4692-4 are the quad rail-to-rail output, single-supply
–80
amplifiers featuring low power, wide bandwidth, and low noise.
ADA4692-2
The ADA4691-2 has two independent shutdown pins, allowing
VSY = ±2.5V –90 VIN = 2.8V p-p
further reduction in supply current. The ADA4691-4 is a quad
) AV = +1 B T
with dual shutdown pins each controlling a pair of amplifiers
A = 25°C (d N –100
and is available in the 16-lead LFCSP. The ADA4692-4 is a
IO
quad version without shutdown.
RAT A –110 P
These amplifiers are ideal for a wide variety of applications.
E S L
Audio, filters, photodiode amplifiers, and charge amplifiers, all
E –120
benefit from this combination of performance and features.
CHANN
Additional applications for these amplifiers include portable
–130
consumer audio players with low noise and low distortion that provide high gain and slew rate response over the audio band at
–140
1 low power. Industrial applications with high impedance sensors,
100 1k 10k 100k
14 0-
FREQUENCY (Hz)
95 such as pyroelectric and IR sensors, benefit from the high 07 Figure 2. Channel Separation vs. Frequency impedance and low 0.5 pA input bias, low offset drift, and 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 AD8694
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Document Outline Features Applications General Description 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