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OPA890

更新时间： 2024-11-23 04:11:47
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BB 运算放大器
页数 文件大小 规格书
32页 902K
描述
Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable

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OPA890 数据手册

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OPA890  
SBOS369–MAY 2007  
Low-Power, Wideband, Voltage-Feedback  
OPERATIONAL AMPLIFIER with Disable  
FEATURES  
DESCRIPTION  
•
FLEXIBLE SUPPLY RANGE:  
+3V to +12V Single Supply  
±1.5V to ±6V Dual Supplies  
The OPA890 represents a major step forward in  
unity-gain stable, voltage-feedback op amps. A new  
internal architecture provides slew rate and  
full-power bandwidth previously found only in  
wideband, current-feedback op amps. These  
capabilities provide exceptional full power bandwidth.  
Using a single +5V supply, the OPA890 can deliver a  
1V to 4V output swing with over 35mA drive current  
and 220MHz bandwidth. This combination of  
features makes the OPA890 an ideal RGB line driver  
or single-supply analog-to-digital converter (ADC)  
input driver.  
•
•
UNITY-GAIN STABLE  
WIDEBAND +5V OPERATION: 115MHz  
(G = +2V/V)  
•
•
•
•
OUTPUT VOLTAGE SWING: ±4V  
HIGH SLEW RATE: 500V/µs  
LOW QUIESCENT CURRENT: 1.1mA  
LOW DISABLE CURRENT: 30µA  
APPLICATIONS  
The low 1.1mA supply current of the OPA890 is  
precisely trimmed at +25°C. This trim, along with low  
temperature drift, ensures lower maximum supply  
current than competing products. System power may  
be reduced further using the optional disable control  
pin. Leaving this disable pin open, or holding it  
HIGH, operates the OPA890 normally. If pulled  
LOW, the OPA890 supply current drops to less than  
30µA while the output goes into a high-impedance  
state.  
•
•
•
•
•
•
•
VIDEO LINE DRIVING  
xDSL LINE DRIVERS/RECEIVERS  
HIGH-SPEED IMAGING CHANNELS  
ADC BUFFERS  
PORTABLE INSTRUMENTS  
TRANSIMPEDANCE AMPLIFIERS  
ACTIVE FILTERS  
RELATED  
OPERATIONAL AMPLIFIER  
PRODUCTS  
Multiplying DAC Transimpedance Amplifier  
+5V  
DESCRIPTION  
SINGLES  
DUALS  
TRIPLES  
Low-Power Voltage-Feedback  
with Disable  
—
OPA2890  
—
VDD  
GND  
VREF  
Voltage-Feedback Amplifier  
with Disable (1800V/µs)  
DB0  
DB1  
DB2  
DB3  
DB4  
DB5  
DB6  
DB7  
DB8  
DB9  
DB10  
DB11  
OPA690  
OPA2690  
OPA3690  
-5V  
Current-Feedback Amplifier  
with Disable (2100V/µs)  
½
OPA691  
OPA692  
OPA2691  
—
OPA3691  
OPA3692  
R1  
DAC7822  
RFB  
Fixed Gain  
+7.5V  
OPA890  
-2.5V  
2.5pF  
IOUT1  
IOUT2  
VOUT  
R2  
R2_3  
R3  
0V £ VOUT £ 5V  
5.56kW  
0.1mF  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007, Texas Instruments Incorporated  
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