Texas Instruments OPA1632DRG4, OPA1632 Datasheet

OPA1632

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

High-Performance, Fully-Differential

AUDIO OP AMP

FEATURES

DSUPERIOR SOUND QUALITY

DULTRA LOW DISTORTION: 0.000022%

DLOW NOISE: 1.3nV/√Hz

DHIGH SPEED:

−Slew Rate: 50V/ s

−Gain Bandwidth: 180MHz

DFULLY DIFFERENTIAL ARCHITECTURE:

−Balanced Input and Output Converts Single-Ended Input to Balanced Differential Output

DWIDE SUPPLY RANGE: ±2.5V to ±16V

DSHUTDOWN TO CONSERVE POWER

APPLICATIONS

DAUDIO ADC DRIVER

DBALANCED LINE DRIVER

DBALANCED RECEIVER

DACTIVE FILTER

DPREAMPLIFIER

		+15V
	VIN+	V		−	Digital
			IN		Output
	VIN−	VOCM
		VIN+			VCOM
		− 15V

Typical ADC Circuit

DESCRIPTION

The OPA1632 is a fully-differential amplifier designed for driving high-performance audio analog-to-digital converters (ADCs). It provides the highest audio quality, with very low noise and output drive characteristics optimized for this application. The OPA1632’s excellent gain bandwidth of 180MHz and very fast slew rate of 50V/ s produce exceptionally low distortion. Very low input noise of 1.3nV/√Hz further ensures maximum signal-to-noise ratio and dynamic range.

The flexibility of the fully differential architecture allows for easy implementation of a single-ended to fully-differential output conversion. Differential output reduces even-order harmonics and minimizes common-mode noise interference. The OPA1632 provides excellent performance when used to drive high-performance audio ADCs such as the PCM1804. A shutdown feature also enhances the flexibility of this amplifier.

The OPA1632 is available in an SO-8 package and a thermally-enhanced MSOP-8 PowerPAD package.

RELATED DEVICES

OPAx134

High-Performance Audio Amplifiers

OPA627/637

Precision High-Speed DiFET Amplifiers

OPAx227/x228

Low-Noise Bipolar Amplifiers

THD + NOISE vs FREQUENCY

0.001

Gain = +1

RF = 348Ω

VO = 3Vrms

Noise (%)

0.0001

Differential I/O

THD +

RL = 600Ω

RL = 2k

Ω

0.00001

10

100

1000

10k

100k

Frequency (Hz)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date. Products	Copyright 2003−2006, T exas Instruments Incorporated
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.

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OPA1632

www.ti.com

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

PACKAGE/ORDERING INFORMATION(1)

				SPECIFIED
			PACKAGE	TEMPERATURE	PACKAGE	ORDERING	TRANSPORT
	PRODUCT	PACKAGE-LEAD	DRAWING	RANGE	MARKING	NUMBER	MEDIA, QUANTITY
		SO-8	D	−40 °C to +85°C	OPA1632	OPA1632D	Rails, 100
	OPA1632					OPA1632DR	Tape and Reel, 2500
		MSOP-8	DGN	−40 °C to +85°C	1632	OPA1632DGN	Rails, 100
		PowerPAD				OPA1632DGNR	Tape and Reel, 2500

(1)For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com.

ABSOLUTE MAXIMUM RATINGS(1)(2)

over operating free-air temperature range unless otherwise noted.

Supply Voltage, ±VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . ±16.5V
Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . ±VS
Output Current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 150mA
Differential Input Voltage, VID . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . ±3V
Maximum Junction Temperature, TJ . . . . . . . . . . . . . . . . . .	. . . . . . . . 150°C
Operating Free-Air Temperature Range . . . . . . . . . . . . . . .	−40 °C to +85°C
Storage Temperature Range, TSTG . . . . . . . . . . . . . . . . .	−65 °C to +150°C
ESD Ratings: Human Body Model . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 1kV
Charge Device Model . . . . . . . . . . . . . . . . . .	. . . . . . . . . 500V
Machine Model . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . 200V

(1)Stresses above these ratings may cause permanent damage.

Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied.

(2)The OPA1632 MSOP-8 package version incorporates a PowerPAD on the underside of the chip. This acts as a heatsink and must be connected to a thermally dissipative plane for proper power dissipation. Failure to do so may result in exceeding the maximum junction temperature, which can permanently damage the device. See TI technical brief SLMA002 for more information about using the PowerPAD thermally enhanced package.

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe

proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

PIN CONFIGURATION

Top View

MSOP, SO

		OPA1632
VIN−	1	8	VIN+
VOCM	2	7	Enable
V+	3	6	V−
VOUT+	4	5	VOUT−

2

OPA1632

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SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

ELECTRICAL CHARACTERISTICS: VS = ±15V

VS = ±15V: RF = 390Ω, RL = 800Ω, and G = +1, unless otherwise noted.

				OPA1632
PARAMETER		CONDITIONS				UNITS
			MIN	TYP	MAX
OFFSET VOLTAGE
Input Offset Voltage				±0.5	±3	mV
vs Temperature	dVos/dT			±5		µV/_C
vs Power Supply, DC	PSRR		316	13		µV/V
INPUT BIAS CURRENT
Input Bias Current	IB			2	6	µA
Input Offset Current	IOS			±100	±500	nA
NOISE
Input Voltage Noise		f = 10 kHz		1.3		nV/√	Hz
Input Current Noise		f = 10 kHz		0.4		pA/√	Hz
INPUT VOLTAGE
Common-Mode Input Range			(V−) + 1.5		(V+) − 1	V
Common-Mode Rejection Ratio, DC			74	90		dB
INPUT IMPEDANCE
Input Impedance (each input pin)				34 || 4		MΩ || pF
OPEN-LOOP GAIN
Open-Loop Gain , DC			66	78		dB
FREQUENCY RESPONSE
Small-Signal Bandwidth		G = +1, RF= 348Ω		180		MHz
(VO = 100mVPP, Peaking < 0.5 dB)		G = +2, RF = 602Ω		90		MHz
		G = +5, RF = 1.5kΩ		36		MHz
		G = +10, RF = 3.01kΩ		18		MHz
Bandwidth for 0.1dB Flatness		G = +1, VO = 100mVPP		40		MHz
Peaking at a Gain of 1		VO = 100mVPP		0.5		dB
Large-Signal Bandwidth		G = +2, VO = 20VPP		800		kHz
Slew Rate (25% to 75% )		G = +1		50		V/µs
Rise and Fall Time		G = +1, VO = 5V Step		100		ns
Settling Time to 0.1%		G = +1, VO = 2V Step		75		ns
0.01%		G = +1, VO = 2V Step		200		ns
Total Harmonic Distortion + Noise		G = +1, f = 1kHz, VO = 3Vrms
Differential Input/Output		RL = 600Ω		0.0003		%
Differential Input/Output		RL = 2kΩ		0.000022		%
Single-Ended In/Differential Out		RL = 600Ω		0.000059		%
Single-Ended In/Differential Out		RL = 2kΩ		0.000043		%
Intermodulation Distortion		G = +1, SMPTE/DIN, VO = 2VPP
Differential Input/Output		RL = 600Ω		0.00008		%
Differential Input/Output		RL = 2kΩ		0.00005		%
Single-Ended In/Differential Out		RL = 600Ω		0.0001		%
Single-Ended In/Differential Out		RL = 2kΩ		0.0007		%
Headroom		THD < 0.01%, RL = 2kΩ		20.0		VPP
OUTPUT
Voltage Output Swing		RL = 2kΩ	(V+) − 1.9		(V−) + 1.9	V
		RL = 800Ω	(V+) − 4.5		(V−) + 4.5	V
Short-Circuit Current	ISC	Sourcing/Sinking	+50/−60	85		mA
Closed-Loop Output Impedance		G = +1, f = 100kHz		0.3		Ω
POWER-DOWN(1)
Enable Voltage Threshold				(V−) + 2		V
Disable Voltage Threshold				(V−) + 0.8		V
Shutdown Current		VENABLE = −15V		0.85	1.5	mA
Turn-On Delay		Time for IQ to Reach 50%		2		µs
Turn-Off Delay		Time for IQ to Reach 50%		2		µs
POWER SUPPLY
Specified Operating Voltage				±15	±16	V
Operating Voltage			±2.5			V
Quiescent Current	IQ	Per Channel		14	17.1	mA
TEMPERATURE RANGE
Specified Range			−40		+85	_C
Operating Range			−40		+125	_C
Storage Range			−65		+150	_C
Thermal Resistance	qJA			200		_C/W

(1) Amplifier has internal 50kΩ pull-up resistor to VCC+ pin. This enables the amplifier with no connection to shutdown pin.

3

OPA1632

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

TYPICAL CHARACTERISTICS

At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted.

0.001

THD + NOISE vs FREQUENCY

Gain = +1

RF = 348Ω

VO = 3Vrms

Noise (%)

0.0001

Differential I/O

THD +

RL = 600Ω

RL = 2kΩ

0.00001

10

100

1k

10k

100k

Frequency (Hz)

	0.1						THD + NOISE vs OUTPUT VOLTAGE
			Gain = +1
			RF = 348Ω
	0.01		f = 1kHz
(%)			Differential I/O
Noise	0.001																								RL		= 600Ω
THD +
	0.0001																																				RL = 2kΩ
	0.00001
	0.01							0.1														1					10																	100
									Differential Output Voltage (Vrms)
								INTERMODULATION DISTORTION
	0.1												vs OUTPUT VOLTAGE
(%)	0.01
	0.001																													RL = 600Ω
IMD
			Gain = +1
	0.0001		RF = 348Ω
			Differential I/O
			SMPTE 4:1; 60Hz, 7kHz																																	RL = 2kΩ
	0.00001		DIN 4:1; 250Hz, 8kHz
	0.01							0.1														1					10																	100
									Differential Output Voltage (VPP)

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0.001

THD + NOISE vs FREQUENCY

Gain = +1

RF = 348Ω

VO = 3Vrms

Single−Ended Input

(%)

Differential Output

+ Noise

0.0001

RL

= 600

Ω

THD

0.00001

RL = 2kΩ

10

100

1k

10k

100k

Frequency (Hz)

THD + NOISE vs OUTPUT VOLTAGE

(%)	0.01
	0.001
Noise+THD
	0.0001		Gain =			+1																	RL		= 600Ω									RL	=			2k	Ω
			RF = 348Ω
			f = 1kHz
			Single−Ended									Input
	0.00001		Differential Output
	0.01							0.1													1				10															100
									Differential Output Voltage (Vrms)
								INTERMODULATION DISTORTION
	0.1											vs OUTPUT VOLTAGE
(%)	0.01
	0.001																											RL = 600Ω
IMD
			Gain = +1
			RF = 348Ω																																	RL = 2kΩ
	0.0001		Single−Ended Input
			Differential Output
			SMPTE 4:1; 60Hz, 7kHz
	0.00001		DIN 4:1; 250Hz, 8kHz
	0.01							0.1													1				10															100
									Differential Output Voltage (VPP)

4

OPA1632

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SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

TYPICAL CHARACTERISTICS (Cont.)

At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted.

VOLTAGE NOISE vs FREQUENCY

10

V (nV/√Hz) n

1

10

100

1k

10k

100k

Frequency (Hz)

OUTPUT VOLTAGE

15

vs DIFFERENTIAL LOAD RESISTANCE

RF = 1kΩ

VCC =

± 15V

10

G = +2

5

VCC

= ±

5V

(V)

0

O

V

VCC = ±5V

−5

−10

VCC = ± 15V

−15

100

1k

10k

100k

RL (Ω)

CURRENT NOISE vs FREQUENCY

10

Hz)

(pA/√

1

n

I

0.1

10

100

1k

10k

Frequency (Hz)

OUTPUT IMPEDANCE

vs FREQUENCY

100

VCC = ± 5V

(Ω)

10

Impedance

Output

1

0.1

100k

1M

10M

100M

Frequency (Hz)

100k

1G

5