鈭?/div>
HZ
AVAILABLE IN SOT23 PACKAGE
DESCRIPTION
The OPA634 and OPA635 are low-power, voltage-
feedback, high-speed amplifiers designed to operate on
+3V or +5V single-supply voltages. Operation on
鹵5V
or +10V supplies is also supported. The input range
extends below ground and to within 1.2V of the positive
supply. Using complementary common-emitter outputs
provides an output swing to within 30mV of ground and
140mV of positive supply. The high output drive cur-
rent, low differential gain and phase errors make them
ideal for single-supply composite video line driving.
Low-distortion operation is ensured by the high gain
bandwidth product (140MHz) and slew rate (250V/碌s).
This makes the OPA634 and OPA635 ideal input buffer
stages to 3V and 5V CMOS converters. Unlike other
low-power, single-supply operational amplifiers, distor-
tion performance improves as the signal swing is de-
creased.
A low 5.6nV input voltage noise supports wide dynamic
range operation. Multiplexing or system power reduc-
tion can be achieved using the high-speed disable line
with the OPA635. Power dissipation can be reduced to
zero by taking the disable line HIGH.
The OPA634 and OPA635 are available in an industry
standard SO-8 package. The OPA634 is also available in
an ultra-small SOT23-5 package, while the OPA635 is
available in the SOT23-6. Where lower supply current
and speed are required, consider the OPA631 and OPA632.
RELATED PRODUCTS
DESCRIPTION
Medium Speed, No Disable
With Disable
High Speed, No Disable
With Disable
SINGLES
OPA631
OPA632
OPA634
OPA635
DUALS
OPA2631
鈥?/div>
OPA2634
鈥?/div>
APPLICATIONS
q
q
q
q
q
SINGLE-SUPPLY ADC INPUT BUFFERS
SINGLE SUPPLY VIDEO LINE DRIVERS
WIRELESS LAN IF AMPLIFIERS
CCD IMAGING CHANNELS
LOW-POWER ULTRASOUND
+3V
2.26k鈩?/div>
374鈩?/div>
V
IN
OPA635
Disable
+3V
Pwrdn
ADS900
10-Bit
20Msps
22pF
DIS
100鈩?/div>
562鈩?/div>
750鈩?/div>
Copyright 漏 1999, Texas Instruments Incorporated
SBOS097A
Printed in U.S.A. February, 2001
next
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