OPA2695
OP
A2695
www.ti.com..................................................................................................................................................................................................... SBOS354–APRIL 2008
Dual, Ultra-Wideband, Current-Feedback
OPERATIONAL AMPLIFIER with Disable
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FEATURES
DESCRIPTION
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GAIN = +2V/V BANDWIDTH (850MHz)
GAIN = +8V/V BANDWIDTH (450MHz)
OUTPUT VOLTAGE SWING: ±4.1V
ULTRA-HIGH SLEW RATE: 2900V/µs
The OPA2695 is a dual, very high bandwidth,
current-feedback op amp that combines exceptional
2900V/µs slew rate and low input voltage noise to
deliver a precision, low-cost, high dynamic range
intermediate frequency (IF) amplifier. The device has
been optimized for high gain operation, and the pin
outs of the two available packages (QFN-16, SO-8)
have been optimized to provide symmetrical input
and output paths. This architecture makes the
OPA2695 an ideal choice as a differential driver, such
as for a high-speed analog-to-digital converter (ADC).
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DIFFERENTIAL 3RD-ORDER INTERCEPT:
> 40dBm (f < 140MHz, 800Ω)
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LOW POWER: 129mW/channel
LOW DISABLED POWER: 0.5mW/channel
APPLICATIONS
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VERY WIDEBAND ADC DRIVERS
LOW-COST PRECISION IF AMPLIFIERS
BROADBAND VIDEO LINE DRIVERS
PORTABLE INSTRUMENTS
ACTIVE FILTERS
The OPA2695 low 12.9mA/channel supply current is
precisely trimmed at +25°C. This trim, along with a
low temperature drift, gives low system power over
temperature. System power may be further reduced
with the optional disable control pin. Leaving this pin
open, or holding it high, gives normal operation. If
pulled low, the OPA2695 supply current drops to less
than 200µA/channel. This power-saving feature,
along with exceptional single +5V operation, makes
the OPA2695 ideal for portable applications. The
OPA2695 is available in an SO-8 (without disable)
package or QFN-16 package (with disable).
ARB WAVEFORM OUTPUT DRIVERS
+5V
1/2
OPA2695
RF
ZI = RT || 2RG
RG
500W
1:1
VI
RL
RT
VO
RF
800W
OPA2695 RELATED PRODUCTS
RG
500W
SINGLES
DUALS
TRIPLES
COMMENTS
1/2
VO
VI
500W
Ultra-wideband
current-feedback operational
amplifier with disable
=
= GD
OPA2695
RG
OPA695
—
OPA3695
-5V
Wideband, high output
current, current-feedback
operational amplifier with
disable
OPA691
OPA2691
OPA3691
Differential Driver Test Circuit
Ultra-wideband, fixed-gain
operational amplifier
-65
OPA693
OPA694
—
OPA3693
—
GD = 10V/V
VO = 2VPP
RL = 800W
-70
-75
-80
-85
-90
-95
-100
Ultra-wideband, low-power,
current-feedback operational
amplifier
OPA2694
3rd Harmonic
2nd Harmonic
10
100
Frequency (MHz)
Differential Harmonic Distortion
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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.
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PowerPAD is a trademark of Texas Instruments, Inc.
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated