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OPA622AP

更新时间： 2024-11-23 04:35:39
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18页 241K
描述
Wide-Bandwidth OPERATIONAL AMPLIFIER

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OPA622AP 数据手册

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OPA622  
®
OPA622  
OPA622  
Wide-Bandwidth  
OPERATIONAL AMPLIFIER  
FEATURES  
APPLICATIONS  
● LARGE SIGNAL BANDWIDTH:  
150MHz (AP), 200MHz (AU)  
(Voltage-Feedback)  
● BROADCAST/HDTV EQUIPMENT  
● COMMUNICATIONS  
● PULSE/RF AMPLIFIERS  
● ACTIVE FILTER  
● HIGH OUTPUT CURRENT: ±70mA  
● SLEW RATE: 1500V/µs (AP), 1700V/µs (AU)  
● DIFFERENTIAL GAIN: 0.15%  
● HIGH SPEED ANALOG SIGNAL  
PROCESSING  
● DIFFERENTIAL PHASE: 0.08°  
● MULTIPLIER OUTPUT AMP  
● EXCELLENT BANDWIDTH/SUPPLY  
● DIFFERENTIATOR FOR DIGITIZED  
CURRENT RATIO: 200MHz/5mA  
VIDEO SIGNALS  
● LOW INPUT BIAS CURRENT: –1.2µA  
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 ROG avoids  
a large compensation capacitor, improves the slew  
rate, and allows a frequency response adaption to  
various gains and load conditions.  
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 50Ω or 75Ω lines with ±3V output swing,  
making it ideal along with the low differential  
gain/phase errors for RF, IF, and video applications.  
CURRENT-FEEDBACK  
R2  
VOLTAGE-FEEDBACK  
R2  
R1  
COTA  
10  
R1  
COTA  
10  
3
13  
50Ω  
–In  
50Ω  
BUF+  
9
9
OPA622  
OPA622  
RIN  
RIN  
VFA  
VOUT  
CFA  
8
VOUT  
4
+In  
4
+In  
VIN  
3
VIN  
BUF–  
13  
2
2
50Ω  
BUF+  
ROG  
50Ω  
100Ω  
IQ  
Adjust  
IQ  
Adjust  
RQ  
RQ  
–5V  
–5V  
International Airport Industrial Park  
Tel: (520) 746-1111  
•
Mailing Address: PO Box 11400  
Cable: BBRCORP  
•
Tucson, AZ 85734  
•
Street Address: 6730 S. Tucson Blvd.  
• Tucson, AZ 85706  
•
Twx: 910-952-1111  
•
•
Telex: 066-6491  
•
FAX: (520) 889-1510  
•
Immediate Product Info: (800) 548-6132  
© 1991 Burr-Brown Corporation  
PDS-1131E  
Printed in U.S.A. March, 1995  
1234567...18

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