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OPA2681

更新时间： 2024-11-29 10:22:23
品牌 Logo 应用领域
BB 运算放大器
页数 文件大小 规格书
21页 294K
描述
Dual Wideband, Current Feedback OPERATIONAL AMPLIFIER With Disable

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OPA2681 数据手册

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®
OPA2681  
OPA2681  
OPA2681  
TM  
Dual Wideband, Current Feedback  
OPERATIONAL AMPLIFIER With Disable  
FEATURES  
APPLICATIONS  
●
WIDEBAND +5V OPERATION: 225MHz (G = +2)  
● xDSL LINE DRIVER  
●
UNITY GAIN STABLE: 280MHz (G = 1)  
● MATCHED I/Q CHANNEL AMPLIFIER  
● BROADBAND VIDEO BUFFERS  
● HIGH SPEED IMAGING CHANNELS  
● PORTABLE INSTRUMENTS  
● DIFFERENTIAL ADC DRIVERS  
● ACTIVE FILTERS  
● HIGH OUTPUT CURRENT: 150mA  
● OUTPUT VOLTAGE SWING: ±4.0V  
● HIGH SLEW RATE: 2100V/µs  
● LOW SUPPLY CURRENT: 6mA/ch  
● LOW DISABLED CURRENT: 200µA/ch  
● ENABLE/DISABLE TIME: 25ns/100ns  
● WIDEBAND INVERTING SUMMING  
DESCRIPTION  
The OPA2681 sets a new level of performance for broadband dual  
current feedback op amps. Operating on a very low 6mA/ch  
supply current, the OPA2681 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 distortion. This gives  
exceptional single supply operation. Using a single +5V supply,  
the OPA2681 can deliver a 1V to 4V output swing with over  
100mA drive current and 150MHz bandwidth. This combination  
of features makes the OPA2681 an ideal RGB line driver or single  
supply ADC input driver.  
The OPA2681’s low 6mA/ch supply current is precisely trimmed  
at 25°C. This trim, along with low drift over temperature, guaran-  
tees lower guaranteed maximum supply current than competing  
products. System power may be further reduced by using the  
optional disable control pin (SO-14 only). Leaving this disable  
pin open, or holding it high, gives normal operation. If pulled low,  
the OPA2681 supply current drops to less than 400µA while the  
output goes into a high impedance state. This feature may be used  
for either power savings or for video MUX applications.  
OPA2681 RELATED PRODUCTS  
+12V  
SINGLES  
DUALS  
TRIPLES  
Voltage Feedback  
Current Feedback  
Fixed Gain  
OPA680  
OPA681  
OPA682  
OPA2680  
OPA2681  
OPA2682  
OPA3680  
OPA3681  
OPA3682  
1/2  
OPA2681  
12.4Ω  
12.4Ω  
324Ω  
1:2  
1µF  
2kΩ  
2kΩ  
+6.5V  
100Ω  
2Vp-p  
15Vp-p  
100Ω  
324Ω  
1/2  
OPA2681  
Single Supply ADSL Upstream Driver  
International Airport Industrial Park  
•
Mailing Address: PO Box 11400, Tucson, AZ 85734  
FAXLine: (800) 548-6133 (US/Canada Only)  
•
Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706  
•
Tel: (520) 746-1111  
•
Twx: 910-952-1111  
Internet: http://www.burr-brown.com/  
•
•
Cable: BBRCORP  
•
Telex: 066-6491  
•
FAX: (520) 889-1510  
•
Immediate Product Info: (800) 548-6132  
©1997 Burr-Brown Corporation  
PDS-1440B  
Printed in U.S.A. October, 1998  
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