AD8531AKS Analog Devices, AD8531AKS Datasheet

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AD8531AKS

Manufacturer Part Number
AD8531AKS
Description
Manufacturer
Analog Devices
Datasheet

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a
GENERAL DESCRIPTION
The AD8531, AD8532, and AD8534 are single, dual and quad
rail-to-rail input and output single-supply amplifiers featuring
250 mA output drive current. This high output current makes
these amplifiers excellent for driving either resistive or capacitive
loads. AC performance is very good with 3 MHz bandwidth,
5 V/ms slew rate and low distortion. All are guaranteed to oper-
ate from a 3 volt single supply as well as a 5 volt supply.
The very low input bias currents enable the AD853x to be used
for integrators, diode amplification and other applications requiring
low input bias current. Supply current is only 750 mA per amplifier
at 5 volts, allowing low current applications to control high
current loads.
Applications include audio amplification for computers, sound
ports, sound cards and set-top boxes. The AD853x family is
very stable and capable of driving heavy capacitive loads, such as
those found in LCDs.
The ability to swing rail-to-rail at the inputs and outputs enables
designers to buffer CMOS DACs, ASICs or other wide output
swing devices in single-supply systems.
The AD8531, AD8532, and AD8534 are specified over the
extended industrial (–40∞C to +85∞C) temperature range. The
AD8531. The AD8532 is available in 8-lead SOIC, MSOP,
TSSOP surface-mount packages. The AD8534 is available in
narrow SO-14 and 14-lead TSSOP surface-mount packages.
All TSSOP, SOT, and SC70 versions are available in tape
and reel only.
REV. D
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
FEATURES
Single-Supply Operation: 2.7 Volts to 6 Volts
High Output Current:
Low Supply Current: 750 A/Amplifier
Wide Bandwidth: 3 MHz
Slew Rate: 5 V/ s
No Phase Reversal
Low Input Currents
Unity Gain Stable
Rail-to-Rail Input and Output
APPLICATIONS
Multimedia Audio
LCD Driver
ASIC Input or Output Amplifier
Headphone Driver
250 mA
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
AD8531/AD8532/AD8534
Low Cost, 250 mA Output
8-Lead SOIC, TSSOP, and MSOP
8-Lead SOIC, TSSOP, and MSOP
Single-Supply Amplifiers
14-Lead SOIC, and TSSOP
PIN CONFIGURATIONS
5-Lead SC70 and SOT-23
(R, RU, and RM Suffixes)
(R, RU, and RM Suffixes)
OUT A
OUT A
OUT B
–IN A
+IN A
–IN A
+IN A
+IN B
–IN B
OUT A
NULL
+IN A
–IN A
+IN A
(KS and RT Suffixes)
V–
(R, and RU Suffixes)
V+
V–
V
1
2
3
4
1
2
3
4
5
6
7
1
2
3
4
1
2
3
AD8531
AD8531
AD8534
AD8532
8
7
6
5
5
4
8
7
6
5
14
13
12
11
10
9
8
V+
© Analog Devices, Inc., 2002
NC
V+
OUT A
NULL
IN A
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
www.analog.com

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AD8531AKS Summary of contents

Page 1

... All TSSOP, SOT, and SC70 versions are available in tape and reel only. REV. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices ...

Page 2

AD8531/AD8532/AD8534–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift Bias Current Drift Offset Current Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage ...

Page 3

ELECTRICAL CHARACTERISTICS Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift Bias Current Drift Offset Current Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low ...

Page 4

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. For supplies less than +6 volts, the differential input voltage is equal to ± Model Temperature Range AD8531AKS* –40∞C to +85∞C AD8531AR –40∞C to +85∞C AD8531ART* –40∞C to +85∞C AD8532AR – ...

Page 5

Typical Performance Characteristics–AD8531/AD8532/AD8534 1.35V CM 500 400 300 200 100 –12 –10 –8 –6 –4 – INPUT OFFSET VOLTAGE – mV Figure 2. Input Offset Voltage ...

Page 6

AD8531/AD8532/AD8534 LOAD 135 180 0 1k 10k 100k 1M 10M 100M FREQUENCY – Hz Figure 11. Open-Loop Gain & Phase vs. ...

Page 7

120 100 80 PSRR– 60 PSRR –20 –40 –60 100 10k 100k 1M 10M 1k FREQUENCY – Hz Figure 20. Power Supply Rejection vs. Frequency 50 V ...

Page 8

... THEORY OF OPERATION The AD8531/AD8532/AD8534 is an all-CMOS, high output current drive, rail-to-rail input/output operational amplifier. This is the latest entry in Analog Devices’ expanding family of single-supply devices for the multimedia and telecom market- places. Its high output current drive and stability with heavy capacitive loads makes the AD8531/AD8532/AD8534 an excel- lent choice as a drive amplifier for LCD panels ...

Page 9

Power Dissipation Although the AD8531/AD8532/AD8534 is capable of providing load currents to 250 mA, the usable output load current drive capability will be limited to the maximum power dissipation allowed by the device package used. In any application, the absolute ...

Page 10

... For more information on general overvoltage character- istics of amplifiers refer to the 1993 Seminar Applications Guide, available from the Analog Devices Literature Center. Output Phase Reversal Some operational amplifiers designed for single-supply opera- tion exhibit an output voltage phase reversal when their inputs are driven beyond their useful common-mode range ...

Page 11

A High Output Current, Buffered Reference/Regulator Many applications require stable voltage outputs relatively close in potential to an unregulated input source. This “low drop- out” type of reference/regulator is readily implemented with a rail-to-rail output op amp, and is particularly ...

Page 12

AD8531/AD8532/AD8534 A Single-Supply Headphone Amplifier Because of its speed and large output drive, the AD8531/AD8532/ AD8534 makes an excellent headphone driver, as illustrated in Figure 40. Its low supply operation and rail-to-rail inputs and outputs give a maximum signal swing ...

Page 13

Direct Access Arrangement for Telephone Line Interface Figure 42 illustrates only transmit/receive telephone line interface for 600 W transmission systems. It allows full duplex transmission of signals on a transformer coupled 600 W line in a differential ...

Page 14

... AD8531/AD8532/AD8534 * AD8531/AD8532/AD8534 SPICE Macro-model * 5-Volt Version ARG / ADSC * * Copyright 1996 by Analog Devices * * Refer to “README.DOC” file for License Statement. Use of this model * indicates your acceptance of the terms and provisions in the License * Statement Node assignments * noninverting input * | * | * | * | * | .SUBCKT AD8531/AD8532/AD8534_5 INPUT STAGE * ...

Page 15

Thin Shrink Small Outline Package [TSSOP] (RU-8) Dimensions shown in millimeters 3.10 3.00 2. 4.50 6.40 BSC 4.40 4. PIN 1 0.65 BSC 0.15 1.20 0.05 MAX 0.30 SEATING 0.20 COPLANARITY 0.19 PLANE 0.09 0.10 ...

Page 16

AD8531/AD8532/AD8534 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Revision History Location 10/02—Data Sheet changed ...

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