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OPA3681E/2K5 Datasheet

  • OPA3681E/2K5

  • OP-AMP|TRIPLE|BIPOLAR|SSOP|16PIN|PLASTIC

  • 386.18KB

  • 22頁(yè)

  • ETC

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OPA3
681
OPA3
OPA3681
681
www.ti.com
Triple Wideband, Current-Feedback
OPERATIONAL AMPLIFIER With Disable
TM
FEATURES
q
WIDEBAND +5V OPERATION: 225MHz (G = +2)
q
UNITY GAIN STABLE: 280MHz (G = 1)
q
q
q
q
q
q
HIGH OUTPUT CURRENT: 150mA
OUTPUT VOLTAGE SWING:
鹵
4.0V
HIGH SLEW RATE: 2100V/
碌
s
LOW SUPPLY CURRENT: 6mA/ch
LOW DISABLED CURRENT: 300
碌
A/ch
IMPROVED HIGH FREQUENCY PINOUT
DESCRIPTION
The OPA3681 sets a new level of performance for broadband
triple current-feedback op amps. Operating on a very low
6mA/ch supply current, the OPA3681 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 distor-
tion. This gives exceptional single-supply operation. Using a
single +5V supply, the OPA3681 can deliver a 1V to 4V output
swing with over 100mA drive current and 150MHz bandwidth.
This combination of features makes the OPA3681 an ideal RGB
line driver or single-supply ADC input driver.
The OPA3681鈥檚 low 6mA/ch supply current is precisely trimmed
at 25擄C. This trim, along with low drift over temperature,
guarantees lower guaranteed maximum supply current than
competing 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 OPA3681 supply current drops to less than 300碌A(chǔ)/ch while
the output goes into a high impedance state. This feature may be
used for power savings or for video MUX applications.
APPLICATIONS
q
q
q
q
q
q
q
q
RGB AMPLIFIERS
WIDEBAND INA
BROADBAND VIDEO BUFFERS
HIGH SPEED IMAGING CHANNELS
PORTABLE INSTRUMENTS
ADC BUFFERS
ACTIVE FILTERS
CABLE DRIVERS
OPA3681 RELATED PRODUCTS
SINGLES
Voltage Feedback
Current Feedback
Fixed Gain
OPA680
OPA681
OPA682
DUALS
OPA2680
OPA2681
OPA2682
TRIPLES
OPA3680
OPA3681
OPA3682
+5
V
1
1/3
OPA3681
鈥?
301鈩?/div>
250鈩?/div>
DIFFERENTIAL TO SINGLE-ENDED
FREQUENCY RESPONSE
+5
1/3
OPA3681
26
10 (V
1
鈥?V
2
)
23
20
250鈩?/div>
66.5鈩?/div>
301鈩?/div>
鈥?
499鈩?/div>
Gain (dB)
f
鈥?dB
17
14
11
8
+5
1/3
OPA3681
499鈩?/div>
V
2
鈥?
High Speed INA (>120MHz)
5
0.1M
1M
10M
Frequency (Hz)
100M
1G
Copyright 漏 1999, Texas Instruments Incorporated
SBOS095A
Printed in U.S.A. January, 2001

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