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OPA693IDR

更新时间： 2024-11-22 22:25:27
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页数 文件大小 规格书
25页 520K
描述
Ultra-Wideband, Fixed Gain Video BUFFER AMPLIFIER with Disable

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O
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OPA693  
O
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SBOS285 – OCTOBER 2003  
Ultra-Wideband, Fixed Gain  
Video BUFFER AMPLIFIER with Disable  
DESCRIPTION  
FEATURES  
The OPA693 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 voltage buffer.  
Operating on a low 13mA supply current, the OPA693 offers  
a slew rate (2500V/µs) and bandwidth (> 700MHz) normally  
associated with a much higher supply current. A new output  
stage architecture delivers high output current with a minimal  
headroom and crossover distortion. This gives exceptional  
single-supply operation. Using a single +5V supply, the  
OPA693 can deliver a 2.5VPP swing with over 90mA drive  
current and 500MHz bandwidth at a gain of +2. This combi-  
nation of features makes the OPA693 an ideal RGB line  
driver or single-supply undersampling Analog-to-Digital Con-  
verter (ADC) input driver.  
● VERY HIGH BANDWIDTH (G = +2): 700MHz  
● FLEXIBLE SUPPLY RANGE:  
+5V to +12V Single Supply  
±2.5V to ±6V Dual Supplies  
● INTERNALLY FIXED GAIN: +2 or ±1  
● LOW SUPPLY CURRENT: 13mA  
● LOW DISABLED CURRENT: 120µA  
● HIGH OUTPUT CURRENT: ±120mA  
● OUTPUT VOLTAGE SWING: ±4.1V  
● SOT23-6 AVAILABLE  
APPLICATIONS  
The OPA693’s low 13mA supply current is precisely trimmed  
at 25°C. This trim, along with low drift over temperature,  
ensures 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. This optional dis-  
able allows the OPA693 to fit into existing video buffer  
layouts where the disable pin is unconnected to get improved  
performance with no board changes. If pulled LOW, the  
OPA693 supply current drops to less than 170µA while the  
output goes into a high impedance state. This feature may be  
used for power savings.  
● BROADBAND VIDEO LINE DRIVERS  
● MULTIPLE LINE VIDEO DA  
● PORTABLE INSTRUMENTS  
● ADC BUFFERS  
● HIGH FREQUENCY ACTIVE FILTERS  
● HFA1112 IMPROVED DROP-IN  
OPA693 RELATED PRODUCTS  
SINGLES  
DUALS  
TRIPLES  
Voltage Feedback  
Current Feedback  
Fixed Gain  
OPA690  
OPA691  
OPA692  
OPA695  
OPA2690  
OPA2691  
—
OPA3690  
OPA3691  
OPA3692  
—
The low gain stable current-feedback architecture used in the  
OPA693 is particularly suitable for high full-power bandwidth  
cable driving requirements. Where the additional flexibility of  
an op amp is required, consider the OPA695 ultra-wideband  
current feedback op amp. Where a unity gain stable voltage  
feedback op amp with very high slew rate is required,  
consider the OPA690.  
> 900MHz  
—
OPA693  
1
2
3
300Ω  
8
7
6
5
DIS  
75Ω  
75Ω  
300Ω  
Video  
+5V  
Out  
Video  
In  
RG-59  
75Ω  
−5V  
75Ω  
Video  
4
Out  
RG-59  
75Ω  
SO-8  
G = +2  
700MHz, 2-Output Component Video DA  
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 Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 2002-2003, Texas Instruments Incorporated  
www.ti.com  
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