OPA2691 Datasheet, PDF (1/30 Pages) Texas Instruments – Dual Wideband, Current-Feedback OPERATIONAL AMPLIFIER

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OPA2691
OPA2691
OPA2691
SBOS224D – DECEMBER 2001 – REVISED JULY 2008
Dual Wideband, Current-Feedback
OPERATIONAL AMPLIFIER With Disable
FEATURES
q FLEXIBLE SUPPLY RANGE:
+5V to +12V Single Supply
±2.5V to ±6V Dual Supply
q WIDEBAND +5V OPERATION: 190MHz (G = +2)
q UNITY-GAIN STABLE: 280MHz (G = 1)
q HIGH OUTPUT CURRENT: 190mA
q OUTPUT VOLTAGE SWING: ±4.0V
q HIGH SLEW RATE: 2100V/µs
q LOW SUPPLY CURRENT: 5.1mA/ch
q LOW DISABLED CURRENT: 150µA/ch
DESCRIPTION
The OPA2691 sets a new level of performance for broadband dual
current-feedback op amps. Operating on a very low 5.1mA/ch
supply current, the OPA2691 offers a slew rate and output power
normally associated with a much higher supply current. A new
output stage architecture delivers a high output current with minimal
voltage headroom and crossover distortion. This gives exceptional
single-supply operation. Using a single +5V supply, the OPA2691
can deliver a 1V to 4V output swing with over 150mA drive current
and 190MHz bandwidth. This combination of features makes the
OPA2691 an ideal RGB line driver or single-supply Analog-to-Digital
Converter (ADC) input driver.
+12V
APPLICATIONS
q xDSL LINE DRIVER / RECEIVER
q MATCHED I/Q CHANNEL AMPLIFIER
q BROADBAND VIDEO BUFFERS
q HIGH-SPEED IMAGING CHANNELS
q PORTABLE INSTRUMENTS
q DIFFERENTIAL ADC DRIVERS
q ACTIVE FILTERS
q WIDEBAND INVERTING SUMMING
The OPA2691’s low 5.1mA/ch supply current is precisely trimmed at
25°C. This trim, along with low drift over temperature, ensures lower
maximum supply current than competing products. System power
may be further reduced by using the optional disable control pin
(SO-14 only). Leaving this disable pin open, or holding it HIGH,
gives normal operation. If pulled LOW, the OPA2691 supply current
drops to less than 150µA/ch while the output goes into a high
impedance state. This feature may be used for power savings.
OPA2691 RELATED PRODUCTS
Voltage-Feedback
Current-Feedback
Fixed Gain
SINGLES
OPA690
OPA691
OPA692
DUALS
OPA2690
OPA2681
—
TRIPLES
OPA3690
OPA3691
OPA3692
1/2
OPA2691
324Ω
+6.0V
2kΩ
1µF
2Vp-p
100Ω
2kΩ
324Ω
12.4Ω _1:2
12.4Ω
18
17
100Ω _15Vp-p
16
15
SINGLE-SUPPLY ADSL UPSTREAM DRIVER
SMALL-SIGNAL FREQUENCY RESPONSE
14
1/2
OPA2691
13
Single-Supply ADSL Upstream Driver
12
0.1
1
10
Frequency (MHz)
100 200
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.
All 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.
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