OPA3691 Datasheet, PDF (1/32 Pages) Burr-Brown (TI) – Triple Wideband, Current-Feedback OPERATIONAL AMPLIFIER With Disable

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OPA3691
OPA3691
OPA3691
SBOS227E – DECEMBER 2001 – REVISED JULY 2008
Triple Wideband, Current-Feedback
OPERATIONAL AMPLIFIER With Disable
FEATURES
DESCRIPTION
q FLEXIBLE SUPPLY RANGE:
+5V to +12V Single-Supply
±2.5V to ±6V Dual Supply
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
q IMPROVED HIGH-FREQUENCY PINOUT
q WIDEBAND +5V OPERATION: 190MHz (G = +2)
APPLICATIONS
q RGB AMPLIFIERS
q WIDEBAND INA
q BROADBAND VIDEO BUFFERS
q HIGH-SPEED IMAGING CHANNELS
q PORTABLE INSTRUMENTS
q ADC BUFFERS
q ACTIVE FILTERS
q CABLE DRIVERS
+5V
V₁
1/3
OPA3691
–5V
301Ω
250Ω
250Ω
+5V
1/3
OPA3691
10 (V₁ – V₂)
The OPA3691 sets a new level of performance for broad-
band, triple current-feedback op amps. Operating on a very
low 5.1mA/ch supply current, the OPA3691 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 head-
room and crossover distortion. This gives exceptional single-
supply operation. Using a single +5V supply, the OPA3691
can deliver a 1V to 4V output swing with over 120mA drive
current and 150MHz bandwidth. This combination of fea-
tures makes the OPA3691 an ideal RGB line driver or
single-supply Analog-to-Digital Converter (ADC) input driver.
The OPA3691’s low 5.1mA/ch supply current is precisely
trimmed at 25°C. This trim, along with low drift over tem-
perature, ensures lower maximum supply current than com-
peting products. System power may be further reduced by
using the optional disable control pin. Leaving this disable
pin open, or holding it HIGH, gives normal operation. If
pulled LOW, the OPA3691 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.
OPA3691 RELATED PRODUCTS
Voltage-Feedback
Current-Feedback
Fixed Gain
SINGLES
OPA690
OPA691
OPA692
DUALS
OPA2690
OPA2691
—
TRIPLES
OPA3690
OPA3681
OPA3692
HIGH-SPEED INA FREQUENCY RESPONSE
25
20
66.5Ω
–5V
15
301Ω
499Ω
10
+5V
499Ω
1/3
OPA3691
V₂
–5V ^{High-Speed INA (120MHz)}
5
0
0.1
1
10
100 400
Frequency (MHz)
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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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