OPA2631
OPA
263
1
www.ti.com
Dual, Low-Power, Single-Supply
OPERATIONAL AMPLIFIER
TM
FEATURES
q
HIGH BANDWIDTH: 75MHz (G = +2)
q
LOW SUPPLY CURRENT: 6mA/chan
q
+3V TO +10V SUPPLY OPERATION
q
INPUT RANGE INCLUDES GROUND
q
4.8V OUTPUT SWING ON +5V SUPPLY
q
HIGH SLEW RATE: 100V/
碌
s
q
LOW INPUT VOLTAGE NOISE: 6nV/鈭欻z
DESCRIPTION
The OPA2631 is a dual, low-power, voltage-feedback
amplifier designed to operate on a single +3V or +5V
supply. Operation on
鹵5V
or +10V supplies is also
supported. The input range extends below ground and
to within 1V of the positive supply. Using comple-
mentary common-emitter outputs provides 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 it ideal for
single-supply consumer video products.
Low-distortion operation is ensured by the high gain
bandwidth product (68MHz) and slew rate (100V/碌s),
making the OPA2631 an ideal input buffer stage to 3V
and 5V CMOS converters. Unlike other low-power,
single-supply amplifiers, distortion performance im-
proves as the signal swing is decreased. A low
6nV/鈭欻z input voltage noise supports wide dynamic-
range operation.
The OPA2631 is available in an industry standard
SO-8 package. Where a single-channel, single-supply
operational amplifier is required, consider the OPA631
and OPA632. Where higher full-power bandwidth and
lower distortion are required, consider the OPA2634.
RELATED PRODUCTS
APPLICATIONS
q
q
q
q
q
q
DIFFERENTIAL RECEIVERS/DRIVERS
ACTIVE FILTERS
MATCHED I AND Q CHANNEL AMPLIFIERS
CCD IMAGING CHANNELS
LOW POWER ULTRASOUND
PORTABLE CONSUMER ELECTRONICS
SPICE model available at www.ti.com
+3V
2.26k鈩?/div>
374鈩?/div>
V
IN
1/2
OPA2631
+3V
100鈩?/div>
DESCRIPTION
ADS901
10-Bit
20Msps
22pF
SINGLES
OPA631
OPA632
OPA634
OPA635
DUALS
OPA2631
鈥?/div>
OPA2634
鈥?/div>
Medium Speed, No Disable
With Disable
High Speed, No Disable
With Disable
562鈩?/div>
750鈩?/div>
Copyright 漏 1999, Texas Instruments Incorporated
SBOS067A
Printed in U.S.A. February, 2001
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