AD8531A Analog Devices, AD8531A Datasheet

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AD8531A

Manufacturer Part Number
AD8531A
Description
Low Cost, 250 ma Output Single-supply Amplifiers
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/ s 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 and diode amplification and other applications
requiring low input bias current. Supply current is only 750 A
per amplifier at 5 volts, allowing low current applications to con-
trol high current loads.
Applications include audio amplification for computers, sound
ports, sound cards and set-top boxes. 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 ex-
tended industrial (–40 C to +85 C) temperature range. The
AD8531 is available in SO-8 and SOT23-5 packages. The
AD8532 is available in 8-pin plastic DIPs, SO-8 and 8-lead
TSSOP surface mount packages. The AD8534 is available in
14-pin plastic DIPs, narrow SO-14 are 14-lead TSSOP surface
mount packages. All TSSOP and SOT versions are available in
tape and reel only.
REV. 0
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
which 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
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: 617/329-4700
OUT A
OUT B
–IN A
+IN A
+IN B
–IN B
OUT A
OUT A
V+
+IN A
–IN A
+IN A
–IN A
14-Lead Epoxy DIP
NULL
–IN A
+IN A
V–
V–
V–
1
2
3
4
5
6
7
8-Lead TSSOP
1
(N Suffix)
2
3
4
(RU Suffix)
1
AD8531/AD8532/AD8534
8-Lead SO
2
3
4
(R Suffix)
8-Lead SO
(Not to Scale)
(Not to Scale)
(R Suffix)
1
(Not to Scale)
4
AD8532
AD8534
AD8532
AD8531
Low Cost, 250 mA Output
Single-Supply Amplifiers
PIN CONFIGURATIONS
8
5
8
7
6
5
8
7
6
5
14
13
12
11
10
9
8
V+
OUT B
–IN B
+IN B
V+
OUT B
–IN B
+IN B
NC
V+
OUT A
NULL
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OUT A
–IN A
+IN A
OUT A
OUT B
OUT A
OUT B
+IN A
+IN B
–IN A
+IN A
+IN B
–IN B
–IN A
–IN B
V–
OUT A
V+
V+
+IN A
© Analog Devices, Inc., 1996
Narrow-Body SO
8-Lead Epoxy DIP
14-Lead TSSOP
V–
1
2
3
4
1
2
3
4
5
6
7
5-Lead SOT
(RU Suffix)
(RT Suffix)
(R Suffix)
(N Suffix)
(Not to Scale)
(Not to Scale)
14-Lead
1
1
AD8532
7
7
3
4
5
AD8534
AD8534
AD8534
AD8531
AD8532
Fax: 617/326-8703
(Not to
Scale)
14
14
8
8
2
1
14
13
12
11
10
9
8
V+
–IN A
8
7
6
5
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
V+
OUT B
–IN B
+IN B

Related parts for AD8531A

AD8531A Summary of contents

Page 1

... All TSSOP and SOT versions are available in tape and reel only. REV. 0 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 which 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 V Input Bias Current I Input Offset Current I Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain A Offset Voltage Drift Bias Current Drift Offset Current Drift OUTPUT CHARACTERISTICS ...

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

... Although the AD8531/AD8532/AD8534 feature proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, prope r ESD precautions are recommended to avoid performance degradation or loss of functionality. Figure 1. Output Voltage vs. Load Model AD8531AR AD8531ART AD8532AR AD8532AN AD8532ARU AD8534AR AD8534AN AD8534ARU ...

Page 5

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

Page 6

AD8531/AD8532/AD8534–Typical Performance Characteristics LOAD + 10k 100k 100M 1M 10M FREQUENCY – Hz Figure 11. Open-Loop Gain & Phase vs. Frequency 200 ...

Page 7

V = +5V S 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

... 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 ca- pacitive loads makes the AD8531/AD8532/AD8534 an excellent 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 al- lowed by the device package used. In any application, the ...

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 for an excellent headphone driver, as illustrated in Figure 40. Its low supply operation and rail-to-rail inputs and outputs give a maximum signal ...

Page 13

Direct Access Arrangement for Telephone Line Interface Figure 42 illustrates only transmit/receive telephone line interface for 600 transmission systems. It allow full duplex transmission of signals on a transformer coupled 600 differential manner. Amplifier A1 provides gain ...

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

Plastic DIP (N-8) 0.430 (10.92) 0.348 (8.84 0.280 (7.11) 0.240 (6.10 0.060 (1.52) PIN 1 0.015 (0.38) 0.210 (5.33) MAX 0.130 (3.30) 0.160 (4.06) MIN 0.115 (2.93) SEATING 0.022 (0.558) 0.100 0.070 (1.77) PLANE (2.54) ...

Page 16

AD8531/AD8532/AD8534 8-Pin SOIC (SO-8) 0.1968 (5.00) 0.1890 (4.80 0.1574 (4.00) 0.2440 (6.20 0.1497 (3.80) 0.2284 (5.80) PIN 1 0.0688 (1.75) 0.0098 (0.25) 0.0532 (1.35) 0.0040 (0.10) 0.0500 0.0192 (0.49) SEATING 0.0098 (0.25) (1.27) 0.0138 (0.35) PLANE ...

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