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

a		Low Cost, 250 mA Output
		Single-Supply Amplifiers
		AD8531/AD8532/AD8534

FEATURES

Single-Supply Operation: 2.7 Volts to 6 Volts High Output Current: 250 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

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 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 A 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.

PIN CONFIGURATIONS

5-Lead SC70 and SOT-23

(KS and RT Suffixes)

OUT A	1	AD8531	V+
		5
V 2
+IN A	3	4	IN A

8-Lead DIP, SOIC, TSSOP, and MSOP

(N, R, RU, and RM Suffixes)

NULL	1	AD8531	8	NC
–IN A	2		7	V+
+IN A	3		6	OUT A
V–	4		5	NULL

8-Lead DIP, SOIC, TSSOP, and MSOP

(N, R, RU, and RM Suffixes)

OUT A	1	AD8532	8	V+
–IN A	2		7	OUT B
+IN A	3		6	–IN B
V–	4		5	+IN B

14-Lead DIP, SOIC, and TSSOP

(N, R, and RU Suffixes)

OUT A	1	14	OUT D
–IN A	2	13	–IN D
+IN A	3	12	+IN D
V+	4	AD8534	V–
		11
+IN B	5	10	+IN C
–IN B	6	9	–IN C
OUT B	7	8	OUT C

REV. C

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.

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

AD8531/AD8532/AD8534–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS (@ VS = 3.0 V, VCM = 1.5 V, TA = 25 C unless otherwise noted)

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
INPUT CHARACTERISTICS
Offset Voltage	VOS	–40°C ≤ TA ≤ +85°C			25	mV
					30	mV
Input Bias Current	IB	–40°C ≤ TA ≤ +85°C		5	50	pA
Input Offset Current	IOS				60	pA
		–40°C ≤ TA ≤ +85°C		1	25	pA
					30	pA
Input Voltage Range			0		3	V
Common-Mode Rejection Ratio	CMRR	VCM = 0 V to 3 V	38	45		dB
Large Signal Voltage Gain	AVO	RL = 2 kΩ, VO = 0.5 V to 2.5 V		25		V/mV
Offset Voltage Drift	∆VOS/∆T			20		µV/°C
Bias Current Drift	∆IB/∆T			50		fA/°C
Offset Current Drift	∆IOS/∆T			20		fA/°C
OUTPUT CHARACTERISTICS
Output Voltage High	VOH	IL = 10 mA	2.85	2.92		V
Output Voltage Low	VOL	–40°C ≤ TA ≤ +85°C	2.8			V
		IL = 10 mA		60	100	mV
Output Current	IOUT	–40°C ≤ TA ≤ +85°C		±250	125	mV
						mA
Closed-Loop Output Impedance	ZOUT	f = 1 MHz, AV = 1		60		Ω
POWER SUPPLY		VS = 3 V to 6 V	45	55		dB
Power Supply Rejection Ratio	PSRR
Supply Current/Amplifier	ISY	VO = 0 V		0.70	1	mA
		–40°C ≤ TA ≤ +85°C			1.25	mA
DYNAMIC PERFORMANCE		RL = 2 kΩ				V/µs
Slew Rate	SR			3.5
Settling Time	tS	To 0.01%		1.6		µs
Gain Bandwidth Product	GBP			2.2		MHz
Phase Margin	φo	f = 1 kHz, RL = 2 kΩ		70		Degrees
Channel Separation	CS			65		dB
NOISE PERFORMANCE						nV/√Hz
Voltage Noise Density	en	f = 1 kHz		45
		f = 10 kHz		30		nV/√Hz
Current Noise Density	in	f = 1 kHz		0.05		pA/√Hz

Specifications subject to change without notice.

–2–

REV. C

AD8531/AD8532/AD8534

ELECTRICAL CHARACTERISTICS (@ VS = 5.0 V, VCM = 2.5 V, TA = 25 C unless otherwise noted)

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
INPUT CHARACTERISTICS
Offset Voltage	VOS	–40°C ≤ TA ≤ +85°C			25	mV
					30	mV
Input Bias Current	IB	–40°C ≤ TA ≤ +85°C		5	50	pA
Input Offset Current	IOS				60	pA
		–40°C ≤ TA ≤ +85°C		1	25	pA
					30	pA
Input Voltage Range			0		5	V
Common-Mode Rejection Ratio	CMRR	VCM = 0 V to 5 V	38	47		dB
Large Signal Voltage Gain	AVO	RL = 2 kΩ, VO = 0.5 V to 4.5 V	15	80		V/mV
Offset Voltage Drift	∆VOS/∆T	–40°C ≤ TA ≤ +85°C		20		µV/°C
Bias Current Drift	∆IB/∆T			50		fA/°C
Offset Current Drift	∆IOS/∆T			20		fA/°C
OUTPUT CHARACTERISTICS
Output Voltage High	VOH	IL = 10 mA	4.9	4.94		V
Output Voltage Low	VOL	–40°C ≤ TA ≤ +85°C	4.85			V
		IL = 10 mA		50	100	mV
Output Current	IOUT	–40°C ≤ TA ≤ +85°C		±250	125	mV
						mA
Closed-Loop Output Impedance	ZOUT	f = 1 MHz, AV = 1		40		Ω
POWER SUPPLY		VS = 3 V to 6 V	45	55		dB
Power Supply Rejection Ratio	PSRR
Supply Current/Amplifier	ISY	VO = 0 V		0.75	1.25	mA
		–40°C ≤ TA ≤ +85°C			1.75	mA
DYNAMIC PERFORMANCE		RL = 2 kΩ				V/µs
Slew Rate	SR			5
Full-Power Bandwidth	BWp	1% Distortion		350		kHz
Settling Time	tS	To 0.01%		1.4		µs
Gain Bandwidth Product	GBP			3		MHz
Phase Margin	φo	f = 1 kHz, RL = 2 kΩ		70		Degrees
Channel Separation	CS			65		dB
NOISE PERFORMANCE						nV/√Hz
Voltage Noise Density	en	f = 1 kHz		45
		f = 10 kHz		30		nV/√Hz
Current Noise Density	in	f = 1 kHz		0.05		pA/√Hz

Specifications subject to change without notice.

REV. C

–3–

AD8531/AD8532/AD8534

ABSOLUTE MAXIMUM RATINGS1
Supply Voltage (VS) . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 7 V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . GND to VS
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

1Stresses above those listed under Absolute Maximum Ratings may cause permanent 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.

2For supplies less than +6 volts, the differential input voltage is equal to ± VS.

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.

2.5
	–VOL
2	+VOH
1.5
OUT
V
1
0.5
0	20	40	60	80	100	120	140	160	180	200
0
					RLOAD –

WARNING!

ESD SENSITIVE DEVICE

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

–4–

REV. C

Typical Performance Characteristics–AD8531/AD8532/AD8534

									VS = 2.7V
	500								VCM = 1.35V
Amplifiers–									TA = 25 C
	400
QUANTITY	300
	200
	100
		–12 –10 –8 –6 –4 –2 0 2 4
			INPUT OFFSET VOLTAGE – mV

Figure 2. Input Offset Voltage

Distribution

	8	VS = 5V, 3V
– pA		VCM = VS/2
	7
CURRENT	6
	5
BIAS	4
INPUT	3
	2
		–35 –15	5	25	45	65	85
		TEMPERATURE – C

Figure 5. Input Bias Current vs. Temperature

	1000
			VS = 2.7V
			TA = 25 C
mV	100
–
VOLTAGEOUTPUT
										SOURCE
	10																			SINK
	1
	0.1
	0.01					0.1				1						10						100				1000

LOAD CURRENT – mA

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

									VS = 5V
	500								VCM = 2.5V
Amplifiers–									TA = 25 C
	400
QUANTITY	300
	200
	100
		–12 –10 –8 –6 –4 –2 0 2 4
			INPUT OFFSET VOLTAGE – mV

Figure 3. Input Offset Voltage

	Distribution
	VS = 5V
	TA = 25 C
– pA	8
	7
CURRENT
	6
	5
BIAS	4
	3
INPUT
	2
	1
	0	1	2	3	4	5
	COMMON-MODE VOLTAGE – Volts

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

	10000
		VS = 5V
	1000	TA = 25 C
– mV
VOLTAGE	100		SOURCE
OUTPUT	10			SINK
	1
	0.01
	0.01	0.1	1	10	100	1000
			LOAD CURRENT – mA

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

	–2					VS = 5V
– mV						VCM = 2.5V
	–3
VOLTAGE
	–4
	–5
OFFSET
	–6
INPUT	–7
	–8
	–35	–15	5	25	45	65	85
		TEMPERATURE – C

Figure 4. Input Offset Voltage vs. Temperature

	6	VS = 5V, 3V
	5
– pA		VCM = VS/2
	4
CURRENT
	3
	2
OFFSET
	1
INPUT	0
	–1
	–2	–35	–15	5	25	45	65	85
			TEMPERATURE – C

Figure 7. Input Offset Current vs.

	Temperature
		VS = 2.7V
		RL = NO LOAD
		TA = 25 C					– Degrees
	80
– dB	60					45
	40					90
GAIN							SHIFT
	20					135
	0					180	PHASE
	1k	10k	100k	1M	10M	100M
			FREQUENCY – Hz

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

REV. C

–5–