OPA682 Datasheet, PDF (1/20 Pages) Burr-Brown (TI) – Wideband, Fixed Gain BUFFER AMPLIFIER With Disable

®
OPA682
OPA682
OPA682
OPA682
TM Wideband, Fixed Gain
BUFFER AMPLIFIER With Disable
FEATURES
q INTERNALLY FIXED GAIN: +2 OR ±1
q HIGH BANDWIDTH (G = +2): 240MHz
q LOW SUPPLY CURRENT: 6mA
q LOW DISABLED CURRENT: 320µA
q HIGH OUTPUT CURRENT: 150mA
q OUTPUT VOLTAGE SWING: ±4.0V
q ±5V OR SINGLE +5V OPERATION
q SOT23-6 AVAILABLE
APPLICATIONS
q BROADBAND VIDEO LINE DRIVERS
q VIDEO MULTIPLEXERS
q MULTIPLE LINE VIDEO DA
q PORTABLE INSTRUMENTS
q ADC BUFFERS
q ACTIVE FILTERS
DESCRIPTION
The OPA682 provides an easy to use, broadband fixed gain
buffer amplifier. Depending on the external connections, the
internal resistor network may be used to provide either a
fixed gain of +2 video buffer or a gain of +1 or –1 voltage
buffer. Operating on a very low 6mA supply current, the
OPA682 offers a slew rate and output power normally
associated with a much higher supply current. A new output
stage architecture delivers high output current with a mini-
mal headroom and crossover distortion. This gives excep-
tional single supply operation. Using a single +5V supply,
the OPA682 can deliver a 1V to 4V output swing with over
100mA drive current and 200MHz bandwidth. This combi-
nation of features makes the OPA682 an ideal RGB line
driver or single supply ADC input driver.
The OPA682’s low 6mA supply current is precisely trimmed
at 25°C. This trim, along with low drift over temperature,
guarantees lower maximum supply current than competing
products that report only a room temperature nominal supply
current. 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
OPA682 supply current drops to less than 320µA while the
output goes into a high impedance state. This feature may be
used for either power savings or for video MUX applications.
OPA682 RELATED PRODUCTS
Voltage Feedback
SINGLES
OPA680
DUALS
OPA2680
Current Feedback
Fixed Gain
OPA681
OPA682
OPA2681
OPA2682
TRIPLES
OPA3680
OPA3681
OPA3682
OPA682
1
8 DIS
Video
In
2
3
75Ω ^–5V ₄
7 +5V
6
5
8-Pin DIP, SO-8
G = +2
75Ω
RG-59
75Ω
RG-59
75Ω
RG-59
75Ω
RG-59
240MHz, 4-Output Component Video D/A
Video
Out
75Ω
75Ω
75Ω
75Ω
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©_{1999 Burr-Brown Corporation}
PDS-1428C
Printed in U.S.A. September, 1999