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OPA622 Datasheet(PDF) 1 Page - Texas Instruments

Part # OPA622
Description  OPERATIONAL AMPLIFIER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

OPA622 Datasheet(HTML) 1 Page - Texas Instruments

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OPA622
FEATURES
q LARGE SIGNAL BANDWIDTH:
150MHz (AP), 200MHz (AU)
(Voltage-Feedback)
q HIGH OUTPUT CURRENT:
±70mA
q SLEW RATE: 1500V/
µs (AP), 1700V/µs (AU)
q DIFFERENTIAL GAIN: 0.15%
q DIFFERENTIAL PHASE: 0.08
°
q EXCELLENT BANDWIDTH/SUPPLY
CURRENT RATIO: 200MHz/5mA
q LOW INPUT BIAS CURRENT: –1.2
µA
APPLICATIONS
q BROADCAST/HDTV EQUIPMENT
q COMMUNICATIONS
q PULSE/RF AMPLIFIERS
q ACTIVE FILTER
q HIGH SPEED ANALOG SIGNAL
PROCESSING
q MULTIPLIER OUTPUT AMP
q DIFFERENTIATOR FOR DIGITIZED
VIDEO SIGNALS
The feedback buffer stage provides 700MHz band-
width, a very high slew rate, and a very short signal
delay time. It is designed primarily for interstage
buffering and not for driving long cables. When com-
bined with the current-feedback amplifier section, the
OPA622 can be interconnected as a voltage-feedback
amplifier with two identical high-impedance inputs.
In this configuration, it features a low common-mode
gain, low input offset, and, due to the delay time of the
additional feedback buffer, a decrease in frequency
bandwidth compared with the current-feedback
configuration. Unlike “classical” operational amplifi-
ers, the OPA622 achieves a nearly constant bandwidth
over a wide gain and output voltage range. The
external setting of the open-loop gain with R
OG avoids
a large compensation capacitor, improves the slew
rate, and allows a frequency response adaption to
various gains and load conditions.
International Airport Industrial Park
Mailing Address: PO Box 11400
Tucson, AZ 85734
Street Address: 6730 S. Tucson Blvd.
Tucson, AZ 85706
Tel: (520) 746-1111
Twx: 910-952-1111
Cable: BBRCORP
Telex: 066-6491
FAX: (520) 889-1510
Immediate Product Info: (800) 548-6132
Wide-Bandwidth
OPERATIONAL AMPLIFIER
DESCRIPTION
The OPA622 is a monolithic amplifier component
designed for precision wide-bandwidth systems
including high-resolution video, RF and IF circuitry,
and communications equipment. It includes a mono-
lithic integrated current-feedback operational
amplifier block and a voltage buffer block, which,
when combined, form a voltage-feedback operational
amplifier.
When combined as a current-feedback amplifier, it
provides a 280MHz large-signal bandwidth at
±2.5V
output level and a 1700V/
µs slew rate. The output
buffer stage can deliver
±70mA output current. The
high output current capability allows the OPA622 to
drive two 50
Ω or 75Ω lines with ±3V output swing,
making it ideal along with the low differential
gain/phase errors for RF, IF, and video applications.
®
OPA622
OPA622
VOLTAGE-FEEDBACK
OPA622
VFA
3
4
+In
R
Q
R
1
R
IN
50
–5V
V
IN
I
Q
Adjust
2
8
13
R
OG
9
50
R
2
V
OUT
10
–In
BUF+
BUF–
C
OTA
CURRENT-FEEDBACK
OPA622
CFA
4
+In
R
Q
R
IN
50
–5V
V
IN
I
Q
Adjust
2
13
9
50
R
2
C
OTA
3
100
V
OUT
10
R
1
BUF+
© 1991 Burr-Brown Corporation
PDS-1131E
Printed in U.S.A. March, 1995


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