Analog Devices AD8534ARU, AD8534AR, AD8534AN, AD8532ARU, AD8532ARM Datasheet

REV. C

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a

Low Cost, 250 mA Output

Single-Supply Amplifiers

AD8531/AD8532/AD8534

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/µs slew rate and low distortion. All are guaranteed to oper­ate 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 µA 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 plastic DIP, SOIC,
MSOP, TSSOP surface-mount packages. The AD8534 is
available in 14-lead plastic DIP, narrow SO-14 and 14-lead
TSSOP surface-mount packages. All TSSOP, SOT, and SC70
versions are available in tape and reel only.

FEATURES
Single-Supply Operation: 2.7 Volts to 6 Volts
High Output Current: ⴞ250 mA
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

PIN CONFIGURATIONS

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 2000

14-Lead DIP, SOIC, and TSSOP

(N, R, and RU Suffixes)

AD8534

1

2

3

4

14

13

12

11

OUT A

–IN A

+IN A

V+

V–

+IN D

–IN D

OUT D

5

6

7

10

9

8

+IN B

–IN B

OUT B

OUT C

–IN C

+IN C

8-Lead DIP, SOIC, TSSOP, and MSOP

(N, R, RU, and RM Suffixes)

AD8532

1

2

3

4

8

7

6

5

OUT A

–IN A

+IN A

V–

+IN B

–IN B

OUT B

V+

8-Lead DIP, SOIC, TSSOP, and MSOP

(N, R, RU, and RM Suffixes)

NULL

–IN A

+IN A

V–

V+

OUT A

NULL

NC

1

2

3

4

8

7

6

5

AD8531

5-Lead SC70 and SOT-23

(KS and RT Suffixes)

1

2

3

5

4

ⴚIN A

+IN A

V+

OUT A

AD8531

Vⴚ

REV. C

–2–

AD8531/AD8532/AD8534–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage V

OS

25 mV

–40°C ≤ T

A

≤ +85°C30mV

Input Bias Current I

B

550 pA

–40°C ≤ T

A

≤ +85°C60pA

Input Offset Current I

OS

125 pA

–40°C ≤ T

A

≤ +85°C30pA

Input Voltage Range 0 3 V
Common-Mode Rejection Ratio CMRR V

CM

= 0 V to 3 V 38 45 dB

Large Signal Voltage Gain A

VO

RL = 2 kΩ, VO = 0.5 V to 2.5 V 25 V/mV

Offset Voltage Drift ∆V

OS

/∆T20µV/°C

Bias Current Drift ∆I

B

/∆T 50 fA/°C

Offset Current Drift ∆IOS/∆T 20 fA/°C

OUTPUT CHARACTERISTICS

Output Voltage High V

OH

IL = 10 mA 2.85 2.92 V
–40°C ≤ T

A

≤ +85°C 2.8 V

Output Voltage Low V

OL

IL = 10 mA 60 100 mV
–40°C ≤ T

A

≤ +85°C 125 mV

Output Current I

OUT

±250 mA

Closed-Loop Output Impedance Z

OUT

f = 1 MHz, AV = 1 60 Ω

POWER SUPPLY

Power Supply Rejection Ratio PSRR V

S

= 3 V to 6 V 45 55 dB

Supply Current/Amplifier I

SY

VO = 0 V 0.70 1 mA
–40°C ≤ TA ≤ +85°C 1.25 mA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 3.5 V/µs
Settling Time t

S

To 0.01% 1.6 µs

Gain Bandwidth Product GBP 2.2 MHz
Phase Margin φo 70 Degrees
Channel Separation CS f = 1 kHz, RL = 2 kΩ 65 dB

NOISE PERFORMANCE

Voltage Noise Density e

n

f = 1 kHz 45 nV/√Hz
f = 10 kHz 30 nV/√Hz

Current Noise Density i

n

f = 1 kHz 0.05 pA/√Hz

Specifications subject to change without notice.

(@ VS = 3.0 V, VCM = 1.5 V, TA = 25ⴗC unless otherwise noted)

ELECTRICAL CHARACTERISTICS

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage V

OS

25 mV

–40°C ≤ T

A

≤ +85°C30mV

Input Bias Current I

B

550 pA

–40°C ≤ T

A

≤ +85°C60pA

Input Offset Current I

OS

125 pA

–40°C ≤ T

A

≤ +85°C30pA

Input Voltage Range 0 5 V
Common-Mode Rejection Ratio CMRR V

CM

= 0 V to 5 V 38 47 dB

Large Signal Voltage Gain A

VO

RL = 2 kΩ, VO = 0.5 V to 4.5 V 15 80 V/mV

Offset Voltage Drift ∆V

OS

/∆T –40°C ≤ TA ≤ +85°C20µV/°C

Bias Current Drift ∆I

B

/∆T 50 fA/°C

Offset Current Drift ∆IOS/∆T 20 fA/°C

OUTPUT CHARACTERISTICS

Output Voltage High V

OH

IL = 10 mA 4.9 4.94 V
–40°C ≤ T

A

≤ +85°C 4.85 V

Output Voltage Low V

OL

IL = 10 mA 50 100 mV
–40°C ≤ T

A

≤ +85°C 125 mV

Output Current I

OUT

±250 mA

Closed-Loop Output Impedance Z

OUT

f = 1 MHz, AV = 1 40 Ω

POWER SUPPLY

Power Supply Rejection Ratio PSRR V

S

= 3 V to 6 V 45 55 dB

Supply Current/Amplifier I

SY

VO = 0 V 0.75 1.25 mA
–40°C ≤ TA ≤ +85°C 1.75 mA

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ 5V/µs
Full-Power Bandwidth BW

p

1% Distortion 350 kHz

Settling Time t

S

To 0.01% 1.4 µs

Gain Bandwidth Product GBP 3 MHz
Phase Margin φo 70 Degrees
Channel Separation CS f = 1 kHz, RL = 2 kΩ 65 dB

NOISE PERFORMANCE

Voltage Noise Density e

n

f = 1 kHz 45 nV/√Hz
f = 10 kHz 30 nV/√Hz

Current Noise Density i

n

f = 1 kHz 0.05 pA/√Hz

Specifications subject to change without notice.

AD8531/AD8532/AD8534

REV. C

–3–

(@ VS = 5.0 V, VCM = 2.5 V, TA = 25ⴗC unless otherwise noted)

AD8531/AD8532/AD8534

REV. C

–4–

ABSOLUTE MAXIMUM RATINGS

1

Supply Voltage (VS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to V

S

Differential Input Voltage2 . . . . . . . . . . . . . . . . . . . . . . . ±6 V

Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range . . . . . . . . . . . –40°C to +85°C

Junction Temperature Range . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering, 60 sec) . . . . . . . . 300°C

NOTES

1

Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; the functional operation of
the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.

2

For supplies less than +6 volts, the differential input voltage is equal to ± VS.

2.5

2

1.5

1

0.5

0

0 20 40 60 80 100 120 140 160 180 200

R

LOAD –

⍀

ⴞV

OUT

+V

OH

–V

OL

Figure 1. Output Voltage vs. Load. VS = ±2.5 V, RL Is Connected to GND (0 V)

PACKAGE INFORMATION

Package Type ␪JA* ␪

JC

Unit

5-Lead SC70 (KS) 376 126 °C/W
5-Lead SOT-23 (RT) 230 146 °C/W
8-Lead SOIC (R) 158 43 °C/W
8-Lead MSOP (RM) 210 45 °C/W
8-Lead TSSOP (RU) 240 43 °C/W
8-Lead Plastic DIP (N) 103 43 °C/W
14-Lead Plastic DIP (N) 83 39 °C/W
14-Lead SOIC (R) 120 36 °C/W
14-Lead TSSOP (RU) 240 43 °C/W

*θJA is specified for the worst case conditions, i.e., θJA is specified for device in socket

for P-DIP packages; θJA is specified for device soldered onto a circuit board for
surface-mount packages.

ORDERING GUIDE

Model Temperature Range Package Description Package Option Branding Information

AD8531AKS* –40°C to +85°C 5-Lead SC70 KS-5 A7B
AD8531AR –40°C to +85°C 8-Lead SOIC SO-8
AD8531ART* –40°C to +85°C 5-Lead SOT-23 RT-5 A7A

AD8532AR –40°C to +85°C 8-Lead SOIC SO-8
AD8532ARM* –40°C to +85°C 8-Lead MSOP RM-8 ARA
AD8532AN –40°C to +85°C 8-Lead Plastic DIP N-8
AD8532ARU* –40°C to +85°C 8-Lead TSSOP RU-8

AD8534AR –40°C to +85°C 14-Lead SOIC SO-14
AD8534AN –40°C to +85°C 14-Lead Plastic DIP N-14
AD8534ARU* –40°C to +85°C 14-Lead TSSOP RU-14

*Available in reels only.

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the AD8531/AD8532/AD8534 features proprietary ESD protection circuitry, permanent damage
may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

INPUT OFFSET VOLTAGE – mV

QUANTITY – Amplifiers

300

500

400

200

100

–12

–10 –8 –6 –4 –20 2 4

VS = 2.7V

V

CM

= 1.35V

T

A

= 25ⴗC

Figure 2. Input Offset Voltage
Distribution

TEMPERATURE – ⴗC

–35 –15 5 25 45 65

85

INPUT BIAS CURRENT – pA

5

8

7

4

2

6

3

VS = 5V, 3V

V

CM

= VS/2

Figure 5. Input Bias Current vs.
Temperature

LOAD CURRENT – mA

0.01 0.1 10001 10 100

⌬OUTPUT VOLTAGE – mV

1000

100

0.1

10

1

VS = 2.7V

TA = 25ⴗC

SOURCE

SINK

Figure 8. Output Voltage to Supply
Rail vs. Load Current

Typical Performance Characteristics–AD8531/AD8532/AD8534

REV. C

–5–

INPUT OFFSET VOLTAGE – mV

QUANTITY – Amplifiers

300

–12

–10 –8 –6 –4 –20 2 4

500

400

200

100

VS = 5V

V

CM

= 2.5V

T

A

= 25ⴗC

Figure 3. Input Offset Voltage
Distribution

COMMON-MODE VOLTAGE – Volts

01234 5

INPUT BIAS CURRENT – pA

5

8

7

4

2

6

3

1

VS = 5V

T

A

= 25ⴗC

Figure 6. Input Bias Current vs.
Common-Mode Voltage

LOAD CURRENT – mA

0.01 0.1 10001 10 100

⌬OUTPUT VOLTAGE – mV

10000

100

0.01

10

1000

1

VS = 5V

T

A

= 25ⴗC

SOURCE

SINK

Figure 9. Output Voltage to Supply
Rail vs. Load Current

TEMPERATURE – ⴗC

–35 –15 5 25 45 65

85

INPUT OFFSET VOLTAGE – mV

–5

–2

–3

–6

–8

–4

–7

VS = 5V

V

CM

= 2.5V

Figure 4. Input Offset Voltage
vs. Temperature

TEMPERATURE – ⴗC

–35 –15 5 25 45 65 85

INPUT OFFSET CURRENT – pA

3

2

0

4

1

–1

–2

5

6

VS = 5V, 3V

V

CM

= VS/2

Figure 7. Input Offset Current vs.
Temperature

FREQUENCY – Hz

1k 10k 100k 1M 10M 100M

VS = 2.7V

R

L

= NO LOAD

T

A

= 25ⴗC

80

60

40

20

0

GAIN – dB

45

90

135

180

PHASE SHIFT – De

g

rees

Figure 10. Open-Loop Gain and
Phase vs. Frequency