Texas Instruments OPA1632DRG4, OPA1632 Datasheet

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

High-Performance, Fully-Differential

AUDIO OP AMP

OPA1632

FEATURES

D SUPERIOR SOUND QUALITY
D ULTRA LOW DISTORTION: 0.000022%
D LOW NOISE: 1.3nV/√Hz
D HIGH SPEED:

− Slew Rate: 50V/µs

− Gain Bandwidth: 180MHz

D FULLY DIFFERENTIAL ARCHITECTURE:

− Balanced Input and Output Converts

Single-Ended Input to Balanced

Differential Output

D WIDE SUPPLY RANGE: ±2.5V to ±16V
D SHUTDOWN TO CONSERVE POWER

APPLICATIONS

D AUDIO ADC DRIVER
D BALANCED LINE DRIVER
D BALANCED RECEIVER
D ACTIVE FILTER
D PREAMPLIFIER

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/µs 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

0.001

+15V

V

IN+

V

V

IN−

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.

         
          
 !     !   

OCM

−

15V

Typical ADC Circuit

−

V

IN

V

+

IN

Digital

Output

V

COM

www.ti.com

0.0001

THD + Noise (%)

0.00001

Gain = +1
R

F

V

O

Differential I/O

RL=600

RL=2k

THD + NOISE vs FREQUENCY

Ω

= 348

=3Vrms

Ω

Ω

100010 100 10k 100k

Frequency (Hz)

Copyright  2003−2006, Texas Instruments Incorporated

"#$%

SO-8

D

−40°C to +85°C

OPA1632

OPA1632

MSOP-8

MSOP-8

DGN

−40°C to +85°C

1632

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

www.ti.com

PACKAGE/ORDERING INFORMATION

(1)

SPECIFIED

PRODUCT PACKAGE-LEAD

PACKAGE
DRAWING

TEMPERATURE

RANGE

PACKAGE

MARKING

ORDERING

NUMBER

TRANSPORT

MEDIA, QUANTITY

OPA1632D Rails, 100

OPA1632DR Tape and Reel, 2500

OPA1632DGN Rails, 100

PowerPAD

(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

OPA1632DGNR Tape and Reel, 2500

at www .ti.com.

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range unless otherwise noted.

Supply Voltage, ±V
Input Voltage, V
Output Current, I
Differential Input Voltage, V
Maximum Junction Temperature, T

Operating Free-Air Temperature Range −40°C to +85°C. . . . . . . . . . . . . . .

Storage Temperature Range, T

ESD Ratings: Human Body Model 1kV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(1)

Stresses above these ratings may cause permanent damage.

S

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

O

Charge Device Model 500V. . . . . . . . . . . . . . . . . . . . . . . . . . .

Machine Model 200V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ID

J

STG

(1)(2)

−65°C to +150°C. . . . . . . . . . . . . . . . .

±16.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±V

S

150mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±3V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150°C. . . . . . . . . . . . . . . . . . . . . . . . . .

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 t o damage because very small parametric changes could
cause the device not to meet its published specifications.

PIN CONFIGURATION

Top View MSOP, SO

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

Exposure to absolute maximum conditions for extended periods
may degrade device reliability. These are stress ratings only , an d
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.

V

V

V

OCM

V+

OUT+

−

IN

OPA1632

1
2
3
4

V

8

IN+

Enable

7

−

V

6

V

5

OUT−

2

"#$%

www.ti.com

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

ELECTRICAL CHARACTERISTICS: VS = ±15V

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

PARAMETER CONDITIONS MIN TYP MAX UNITS
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 I
Input Offset Current I

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

Bandwidth for 0.1dB Flatness G = +1, VO = 100mV
Peaking at a Gain of 1 VO = 100mV
Large-Signal Bandwidth G = +2, VO = 20V
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 = 2V

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 V

OUTPUT

Voltage Output Swing RL = 2kΩ (V+) − 1.9 (V−) + 1.9 V

Short-Circuit Current I
Closed-Loop Output Impedance G = +1, f = 100kHz 0.3 Ω

POWER-DOWN

Enable Voltage Threshold (V−) + 2 V
Disable Voltage Threshold (V−) + 0.8 V
Shutdown Current V
Turn-On Delay Time for IQ to Reach 50% 2 µs
Turn-Off Delay Time for IQ to Reach 50% 2 µs

POWER SUPPL Y

Specified Operating Voltage ±15 ±16 V
Operating Voltage ±2.5 V
Quiescent Current I

TEMPERATURE RANGE

Specified Range −40 +85 _C
Operating Range −40 +125 _C
Storage Range −65 +150 _C
Thermal Resistance

(1)

Amplifier has internal 50kΩ pull-up resistor to V

(1)

OS

SC

B

G = +5, RF = 1.5kΩ 36 MHz

G = +10, RF = 3.01kΩ 18 MHz

PP

PP

PP

PP

RL = 800Ω (V+) − 4.5 (V−) + 4.5 V

Sourcing/Sinking +50/−60 85 mA

= −15V 0.85 1.5 mA

ENABLE

Q

q

JA

pin. This enables the amplifier with no connection to shutdown pin.

CC+

Per Channel 14 17.1 mA

OPA1632

2 6 µA

±100 ±500 nA

40 MHz

0.5 dB

800 kHz

PP

200 _C/W

3

"#$%

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

TYPICAL CHARACTERISTICS

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

www.ti.com

0.001
Gain= +1

= 348

R

F

=3Vrms

V

O

Differential I/O

0.0001

THD + Noise (%)

0.00001

RL=600

RL=2k

10 100 1k 10k 100k

0.1
Gain = +1

R

F

f=1kHz

0.01

Differential I/O

0.001

THD + NOISE vs FREQUENCY

Ω

Ω

Ω

Frequency (Hz)

THD + NOISE vs OUTPUT VOLTAGE

Ω

=348

RL= 600

0.001
Gain = +1

RF=348
VO=3Vrms
Single−Ended Input
Differential Output

0.0001

THD + Noise (%)

0.00001

Ω

RL=600

RL=2k

10 100 1k 10k 100k

0.01

0.001

THD + NOISE vs FREQUENCY

Ω

Ω

Ω

Frequency (Hz)

THD + NOISE vs OUTPUT VOLTAGE

RL= 600

Ω

THD + Noise (%)

0.0001

0.00001

0.01 0.1 1 10 100
Differential Output Voltage (Vrms)

INTERMODULATION DISTORTION

0.1

0.01

0.001

IMD(%)

0.0001

0.00001

Gain = +1

=348

R

F

Differential I/O
SMPTE 4:1; 60Hz, 7kHz
DIN 4:1; 250Hz, 8kHz

0.01 0.1 1 10 100

vs OUTPUT VOLTAGE

Ω

Differential Output Voltage (V

RL=600

PP

)

RL=2k

Ω

RL=2k

Ω

Ω

0.0001

THD + Noise (%)

0.00001

IMD(%)

0.0001

0.00001

Gain = +1

Ω

=348

R

F

f=1kHz
Single−Ended Input
Differential Output

0.01 0.1 1 10 100
Differential Output Voltage (Vrms)

INTERMODULATION DISTORTION

0.1

0.01

0.001
Gain = +1

=348

R

F

Single−Ended Input
Differential Output
SMPTE 4:1; 60Hz, 7kHz
DIN 4:1; 250Hz, 8kHz

0.01 0.1 1 10 100

vs OUTPUT VOLTAGE

Ω

Differential Output Voltage (V

RL= 600

)

PP

RL=2k

Ω

RL=2k

Ω

Ω

4

www.ti.com

TYPICAL CHARACTERISTICS (Cont.)

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

"#$%

SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006

10

Hz)

√

(nV/

n

V

1

10 100 1k 10k 100k

15

RF=1k
G=+2

10

5

(V)

0

O

V

−

5

−

10

−

15

100 1k 10k 100k

VOLTAGE NOISE vs FREQUENCY

Frequency (Hz)

vs DIFFERENTIAL LOAD RESISTANCE

Ω

OUTPUT VOLTAGE

(Ω)

R

L

VCC=±15V

VCC=±5V

VCC=±5V

VCC=±15V

10

Hz)

√

1

(pA/

n

I

0.1
10 100 1k 10k 100k

100

VCC=±5V

)

Ω

10

1

Output Impedance (

0.1
100k 1M 10M 100M 1G

CURRENT NOISE vs FREQUENCY

Frequency (Hz)

OUTPUT IMPEDANCE

vs FREQUENCY

Frequency (Hz)

5