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otherwise under any patent or patent rights of Analog Devices.
a
AD8614/AD8644
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1999
Single and Quad +18 V
Operational Amplifiers
PIN CONFIGURATIONS
5-Lead SOT-23
(RT Suffix)

1
2
3
5
4 2IN+IN
V+OUT A
AD8614
V2
14-Lead TSSOP
(RU Suffix)
OUT A
2IN A
1IN A
V1
2IN D
1IN D
V2
OUT D114
1IN B
2IN B
OUT B
2IN C
OUT C
1IN C
78
AD8644
14-Lead Narrow Body SO
(R Suffix)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
–IN A
+IN A
V+
+IN B
–IN B
OUT B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OUT A
AD8644
FEATURES
Unity Gain Bandwidth: 5.5 MHz
Low Voltage Offset: 1.0 mV
Slew Rate: 7.5 V/ms
Single-Supply Operation: 5 V to 18 V
High Output Current: 70 mA
Low Supply Current: 800 mA/Amplifier
Stable with Large Capacitive Loads
Rail-to-Rail Inputs and Outputs
APPLICATIONS
LCD Gamma and V
COM
Drivers
Modems
Portable Instrumentation
Direct Access Arrangement
GENERAL DESCRIPTION
The AD8614 (single) and AD8644 (quad) are single-supply,
5.5 MHz bandwidth, rail-to-rail amplifiers optimized for LCD
monitor applications.
They are processed using Analog Devices high voltage, high speed,
complementary bipolar process—HV XFCB. This proprietary
process includes trench isolated transistors that lower internal
parasitic capacitance which improves gain bandwidth, phase mar-
gin and capacitive load drive. The low supply current of 800 m A
(typ) per amplifier is critical for portable or densely packed designs.
In addition, the rail-to-rail output swing provides greater dynamic
range and control than standard video amplifiers provide.
These products operate from supplies of 5 V to as high as
18 V. The unique combination of an output drive of 70 mA,
high slew rates, and high capacitive drive capability makes the
AD8614/AD8644 an ideal choice for LCD applications.
The AD8614 and AD8644 are specified over the temperature
range of –20 C to +85 C. They are available in 5-lead SOT-23,
14-lead TSSOP and 14-lead SOIC surface mount packages in
tape and reel.