OPA1632
SBOS286A 鈭?DECEMBER 2003 鈭?REVISED SEPTEMBER 2006
High-Performance, Fully-Differential
AUDIO OP AMP
FEATURES
D
D
D
D
D
SUPERIOR SOUND QUALITY
ULTRA LOW DISTORTION: 0.000022%
LOW NOISE: 1.3nV/鈭欻z
HIGH SPEED:
鈭?Slew Rate: 50V/碌s
鈭?Gain Bandwidth: 180MHz
FULLY DIFFERENTIAL ARCHITECTURE:
鈭?Balanced Input and Output Converts
Single-Ended Input to
Balanced
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鈥檚 excellent
gain bandwidth of 180MHz and very fast slew rate of
50V/碌s produce exceptionally low distortion. Very low
input noise of 1.3nV/鈭欻z 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錚?package.
Differential Output
D
WIDE SUPPLY RANGE:
鹵2.5V
to
鹵16V
D
SHUTDOWN TO CONSERVE POWER
APPLICATIONS
D
D
D
D
D
AUDIO ADC DRIVER
BALANCED LINE DRIVER
BALANCED RECEIVER
ACTIVE FILTER
PREAMPLIFIER
RELATED DEVICES
OPAx134
OPA627/637
OPAx227/x228
High-Performance Audio Amplifiers
Precision High-Speed DiFET Amplifiers
Low-Noise Bipolar Amplifiers
THD + NOISE vs FREQUENCY
0.001
+15V
Digital
Output
V
COM
Gain = +1
R
F
= 348鈩?/div>
V
O
= 3Vrms
Differential I/O
V
IN+
V
OCM
V
IN鈭?/div>
V
IN
鈭?/div>
V
IN
+
THD + Noise (%)
0.0001
鈭?5V
R
L
= 600鈩?/div>
R
L
= 2k鈩?/div>
0.00001
Typical ADC Circuit
10
100
1000
Frequency (Hz)
10k
100k
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
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
錚?/div>
2003鈭?006, Texas Instruments Incorporated
www.ti.com
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