AD8648 Datasheet, PDF (1/12 Pages) Analog Devices – Low Cost, 24 MHz, Rail-to-Rail, Quad Amplifiers

FEATURES
Low offset voltage: 2.5 mV max
Single-supply operation: 2.7 V to 5.5 V
Low noise: 6 nV/√Hz
Wide bandwidth: 24 MHz
Slew rate: 12 V/μs
High output current: 150 mA
No phase reversal
Low input bias current: 1 pA
Low supply current: 2 mA max
Unity-gain stable
APPLICATIONS
Barcode scanners
Battery-powered instrumentation
Multipole filters
Sensors
ASIC input or output amplifiers
Audio
Photodiode amplification
GENERAL DESCRIPTION
The AD8648 is a quad, rail-to-rail, input and output, single-
supply amplifier featuring low offset voltage, wide signal
bandwidth, and low input voltage and 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. The AD8648
family offers high output drive capability, which is excellent for
audio line drivers and other low impedance applications.
Low Cost, 24 MHz, Rail-to-Rail,
Quad Amplifiers
AD8648
PIN CONFIGURATIONS
OUT A 1
–IN A 2
+IN A 3
V+ 4
+IN B 5
–IN B 6
OUT B 7
AD8648
TOP VIEW
(Not to Scale)
14 OUT D
13 –IN D
12 +IN D
11 V–
10 +IN C
9 –IN C
8 OUT C
Figure 1. 14-Lead TSSOP (RU-14)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1
14 OUT D
2
13 –IN D
3 _AD8648 12 +IN D
4 TOP VIEW 11 V–
5 ^{(Not to Scale)} 10 +IN C
6
9 –IN C
7
8 OUT C
Figure 2. 14-Lead SOIC (R-14)
Applications for the part include portable and low powered
instrumentation, audio amplification for portable devices,
portable phone headsets, bar code 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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