AD8646 Datasheet, PDF (1/12 Pages) Analog Devices – 24 MHz Rail-to-Rail Dual Amplifier

FEATURES
Offset voltage: 2.5 mV maximum
Single-supply operation: 2.7 V to 5.5 V
Low noise: 8 nV/√Hz
Wide bandwidth: 24 MHz
Slew rate: 12 V/μs
Short-circuit output current: 150 mA
No phase reversal
Low input bias current: 1 pA
Low supply current: 2 mA maximum
Unity gain stable
APPLICATIONS
Battery-powered instruments
Multipole filters
ADC front ends
Sensors
Barcode scanners
ASIC input or output amplifiers
Audio amplifiers
Photodiode amplifiers
Datapath/mux/switch control
GENERAL DESCRIPTION
The AD8646 is a dual, rail-to-rail, input and output, single-
supply amplifier featuring low offset voltage, wide signal
bandwidth, low input voltage, and low current noise.
The combination of 24 MHz bandwidth, low offset, low noise,
and very low input bias current makes these amplifiers useful in
a wide variety of applications. Filters, integrators, photodiode
amplifiers, and high impedance sensors all benefit from the
combination of performance features. AC applications benefit
from the wide bandwidth and low distortion. This amplifier
24 MHz Rail-to-Rail
Dual Amplifier
AD8646
PIN CONFIGURATION
OUTA 1
8 V+
–INA 2 AD8646 7 OUTB
+INA 3 ^{TOP VIEW} 6 –INB
(Not to Scale)
V– 4
5 +INB
Figure 1.
offers high output drive capability, which is excellent for audio
line drivers and other low impedance applications.
Applications include portable and low powered instrumenta-
tion, audio amplification for portable devices, portable phone
headsets, barcode scanners, and multipole filters. The ability to
swing rail to rail at both the input and output enables designers
to buffer CMOS ADCs, DACs, ASICs, and other wide output
swing devices in single-supply systems.
Rev. 0
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