OPA631 Datasheet, PDF (1/18 Pages) Burr-Brown (TI) – Low Power, Single-Supply OPERATIONAL AMPLIFIERS TM

OPA631
OPA632
OPA631
www.ti.com
TM _{Low-Power, Single-Supply}
OPERATIONAL AMPLIFIERS
FEATURES
q HIGH BANDWIDTH: 75MHz (G = +2)
q LOW SUPPLY CURRENT: 6mA
q ZERO POWER DISABLE (OPA632)
q +3V TO +10V OPERATION
q INPUT RANGE INCLUDES GROUND
q 4.8V OUTPUT SWING ON +5V SUPPLY
q HIGH SLEW RATE: 100V/µs
q LOW INPUT VOLTAGE NOISE: 6nV/√Hz
q AVAILABLE IN SOT23 PACKAGE
APPLICATIONS
q SINGLE-SUPPLY ADC INPUT BUFFERS
q SINGLE-SUPPLY VIDEO LINE DRIVERS
q CCD IMAGING CHANNELS
q LOW-POWER ULTRASOUND
q PLL INTEGRATORS
q PORTABLE CONSUMER ELECTRONICS
+3V
2.26kΩ
Disable
+3V
374Ω
V_IN
DIS
OPA632
Pwrdn
100Ω
22pF
ADS901
10-Bit
20Msps
562Ω
750Ω
DESCRIPTION
The OPA631 and OPA632 are low-power, high-speed,
voltage-feedback amplifiers designed to operate on a
single +3V or +5V supply. Operation on ±5V or +10V
supplies is also supported. The input range extends
below ground and to within 1V of the positive supply.
Using complementary common-emitter outputs pro-
vides an output swing to within 30mV of ground and
130mV of the positive supply. The high output drive
current and low differential gain and phase errors also
make them ideal for single-supply consumer video
products.
Low distortion operation is ensured by the high gain
bandwidth product (68MHz) and slew rate (100V/µs),
making the OPA631 and OPA632 ideal input buffer
stages to 3V and 5V CMOS converters. Unlike other
low-power, single-supply amplifiers, distortion perfor-
mance improves as the signal swing is decreased. A
low 6nV input voltage noise supports wide dynamic
range operation. Channel multiplexing or system power
reduction can be achieved using the high-speed disable
line on the OPA632. Power dissipation can be reduced
to zero by taking the disable line HIGH.
The OPA631 and OPA632 are available in an industry-
standard SO-8 package. The OPA631 is also available
in an ultra-small SOT23-5 package, while the OPA632
is available in the SOT23-6. Where higher full-power
bandwidth and lower distortion are required in a single-
supply operational amplifier, consider the OPA634
and OPA635.
RELATED PRODUCTS
DESCRIPTION
Medium Speed, No Disable
With Disable
High Speed, No Disable
With Disable
SINGLES
OPA631
OPA632
OPA634
OPA635
DUALS
OPA2631
—
OPA2634
—
Copyright © 1999, Texas Instruments Incorporated
SBOS066A
Printed in U.S.A. February, 2001