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Industry's First Programmable Differential Amplifiers
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New programmable differential amplifiers from TI provide optimized noise and distortion performance over entire gain range.
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Friday, September 21, 2012:
Texas Instruments has developed a new breed of amplifier, the programmable differential amplifier (PDA), combining the best of fully differential amplifiers (FDAs) and variable gain amplifiers (VGAs).
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The LMH688x provide optimized noise, distortion, and bandwidth performance over a 6 dB to 26 dB gain range, giving system designers a single device for use in many applications. Now engineers can easily modify designs by varying gain without having to adjust external resistors, change amplifiers, or reconfigure and optimize each gain stage, changing the way they design with differential amplifiers.
Designing with PDAs increases flexibility and significantly reduces design time, solution size, and BOM cost for a broad range of applications including medical, test and measurement, military, wireless communications, and microwave backhaul.
Compared to traditional DVGAs, TI's PDAs offer more consistent noise and distortion performance over the entire gain range. The programmable gain control in the LMH6881 and LMH6882 eliminates the need for gain-setting resistors and their associated mismatch errors, enabling more robust systems for applications, such as medical, test and measurement, military, wireless communications, and microwave backhaul.
Srinivas Nallani Chakravathi, EFYTIMES News Network
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