OPA1632
SBOS286A − DECEMBER 2003 − 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/√Hz
HIGH SPEED:
− Slew Rate: 50V/µs
− Gain Bandwidth: 180MHz
FULLY DIFFERENTIAL ARCHITECTURE:
− 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’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.
Differential Output
D
WIDE SUPPLY RANGE:
±2.5V
to
±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
= 348Ω
V
O
= 3Vrms
Differential I/O
V
IN+
V
OCM
V
IN−
V
IN
−
V
IN
+
THD + Noise (%)
0.0001
−15V
R
L
= 600Ω
R
L
= 2kΩ
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
2003−2006, Texas Instruments Incorporated
www.ti.com
OPA1632
www.ti.com
SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006
PACKAGE/ORDERING INFORMATION
(1)
PRODUCT
PACKAGE-LEAD
SO-8
OPA1632
MSOP-8
PowerPAD
DGN
−40°C to +85°C
1632
PACKAGE
DRAWING
D
SPECIFIED
TEMPERATURE
RANGE
−40°C to +85°C
PACKAGE
MARKING
OPA1632
ORDERING
NUMBER
OPA1632D
OPA1632DR
OPA1632DGN
OPA1632DGNR
TRANSPORT
MEDIA, QUANTITY
Rails, 100
Tape and Reel, 2500
Rails, 100
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,
±V
S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±16.5V
Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±V
S
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
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
(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.
OPA1632
V
IN−
V
OCM
V+
V
OUT+
1
2
3
4
8
7
6
5
V
IN+
Enable
V−
V
OUT−
2
OPA1632
www.ti.com
SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006
ELECTRICAL CHARACTERISTICS: V
S
=
±15V
VS =
±15V:
RF = 390Ω, RL = 800Ω, and G = +1, unless otherwise noted.
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
vs Temperature
vs Power Supply, DC
INPUT BIAS CURRENT
Input Bias Current
Input Offset Current
NOISE
Input Voltage Noise
Input Current Noise
INPUT VOLTAGE
Common-Mode Input Range
Common-Mode Rejection Ratio, DC
INPUT IMPEDANCE
Input Impedance (each input pin)
OPEN-LOOP GAIN
Open-Loop Gain , DC
FREQUENCY RESPONSE
Small-Signal Bandwidth
(VO = 100mVPP, Peaking < 0.5 dB)
G = +1, RF= 348Ω
G = +2, RF = 602Ω
G = +5, RF = 1.5kΩ
G = +10, RF = 3.01kΩ
G = +1, VO = 100mVPP
VO = 100mVPP
G = +2, VO = 20VPP
G = +1
G = +1, VO = 5V Step
G = +1, VO = 2V Step
G = +1, VO = 2V Step
G = +1, f = 1kHz, VO = 3Vrms
RL = 600Ω
RL = 2kΩ
RL = 600Ω
RL = 2kΩ
G = +1, SMPTE/DIN, VO = 2VPP
RL = 600Ω
RL = 2kΩ
RL = 600Ω
RL = 2kΩ
THD < 0.01%, RL = 2kΩ
RL = 2kΩ
RL = 800Ω
Sourcing/Sinking
G = +1, f = 100kHz
(V+) − 1.9
(V+) − 4.5
+50/−60
66
CONDITIONS
MIN
OPA1632
TYP
±0.5
±5
13
2
±100
f = 10 kHz
f = 10 kHz
(V−) + 1.5
74
1.3
0.4
(V+) − 1
90
34 || 4
78
180
90
36
18
40
0.5
800
50
100
75
200
0.0003
0.000022
0.000059
0.000043
0.00008
0.00005
0.0001
0.0007
20.0
(V−) + 1.9
(V−) + 4.5
85
0.3
(V−) + 2
(V−) + 0.8
0.85
2
2
±15
±2.5
IQ
Per Channel
−40
−40
−65
q
JA
MAX
±3
UNITS
mV
µV/_C
µV/V
µA
nA
nV/√Hz
pA/√Hz
V
dB
MΩ || pF
dB
MHz
MHz
MHz
MHz
MHz
dB
kHz
V/µs
ns
ns
ns
%
%
%
%
%
%
%
%
VPP
V
V
mA
Ω
V
V
mA
µs
µs
V
V
mA
_C
_C
_C
_C/W
dVos/dT
PSRR
IB
IOS
316
6
±500
Bandwidth for 0.1dB Flatness
Peaking at a Gain of 1
Large-Signal Bandwidth
Slew Rate (25% to 75% )
Rise and Fall Time
Settling Time to 0.1%
0.01%
Total Harmonic Distortion + Noise
Differential Input/Output
Differential Input/Output
Single-Ended In/Differential Out
Single-Ended In/Differential Out
Intermodulation Distortion
Differential Input/Output
Differential Input/Output
Single-Ended In/Differential Out
Single-Ended In/Differential Out
Headroom
OUTPUT
Voltage Output Swing
Short-Circuit Current
Closed-Loop Output Impedance
POWER-DOWN(1)
Enable Voltage Threshold
Disable Voltage Threshold
Shutdown Current
Turn-On Delay
Turn-Off Delay
POWER SUPPLY
Specified Operating Voltage
Operating Voltage
Quiescent Current
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
ISC
VENABLE = −15V
Time for IQ to Reach 50%
Time for IQ to Reach 50%
1.5
±16
17.1
+85
+125
+150
14
200
(1) Amplifier has internal 50kΩ pull-up resistor to VCC+ pin. This enables the amplifier with no connection to shutdown pin.
3
OPA1632
www.ti.com
SBOS286A − DECEMBER 2003 − REVISED SEPTEMBER 2006
TYPICAL CHARACTERISTICS
At TA = +25°C, VS =
±15V,
and RL = 2kΩ, unless otherwise noted.
THD + NOISE vs FREQUENCY
0.001
Gain = +1
R
F
= 348Ω
V
O
= 3Vrms
Differential I/O
0.001
THD + NOISE vs FREQUENCY
Gain = +1
R
F
= 348Ω
V
O
= 3Vrms
Single−
Ended Input
Differential Output
THD + Noise (%)
0.0001
THD + Noise (%)
0.0001
R
L
= 600
Ω
R
L
= 2kΩ
R
L
= 600Ω
R
L
= 2kΩ
0.00001
10
100
1k
Frequency (Hz)
10k
100k
0.00001
10
100
1k
Frequency (Hz)
10k
100k
THD + NOISE vs OUTPUT VOLTAGE
0.1
Gain = +1
R
F
= 348Ω
f = 1kHz
Differential I/O
THD + Noise (%)
0.001
R
L
= 600Ω
0.01
THD + NOISE vs OUTPUT VOLTAGE
0.01
THD + Noise (%)
0.001
R
L
= 600Ω
0.0001
R
L
= 2kΩ
0.0001
0.00001
0.01
0.1
1
10
100
0.00001
0.01
Gain = +1
R
F
= 348
Ω
f = 1kHz
Single−
Ended Input
Differential Output
0.1
1
R
L
= 2kΩ
10
100
Differential Output Voltage (Vrms)
Differential Output Voltage (Vrms)
INTERMODULATION DISTORTION
vs OUTPUT VOLTAGE
0.1
0.1
INTERMODULATION DISTORTION
vs OUTPUT VOLTAGE
0.01
IMD (%)
IMD (%)
0.01
0.001
Gain = +1
R
F
= 348
Ω
Differential I/O
SMPTE 4:1; 60Hz, 7kHz
DIN 4:1; 250Hz, 8kHz
0.1
1
R
L
= 600Ω
0.001
Gain = +1
R
F
= 348Ω
Single−
Ended Input
Differential Output
SMPTE 4:1; 60Hz, 7kHz
DIN 4:1; 250Hz, 8kHz
0.1
1
R
L
= 600Ω
0.0001
0.0001
R
L
= 2k
Ω
0.00001
10
100
R
L
= 2kΩ
0.00001
0.01
0.01
10
100
Differential Output Voltage (V
PP
)
Differential Output Voltage (V
PP
)
4
OPA1632
www.ti.com
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
10
CURRENT NOISE vs FREQUENCY
V
n
(nV/√Hz)
I
n
(pA/
√
Hz)
1
10
100
1k
Frequency (Hz)
10k
100k
1
0.1
10
100
1k
Frequency (Hz)
10k
100k
OUTPUT VOLTAGE
vs DIFFERENTIAL LOAD RESISTANCE
15
10
5
V
O
(V)
0
V
CC
=
±5V
−5
−
10
−15
100
1k
R
L
(Ω)
10k
100k
R
F
= 1kΩ
G = +2
V
CC
=
±15V
V
CC
=
±5V
Output Impedance (Ω)
100
V
CC
=
±5V
OUTPUT IMPEDANCE
vs FREQUENCY
10
1
V
CC
=
±15V
0.1
100k
1M
10M
Frequency (Hz)
100M
1G
5
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