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TSH173 Datasheet(PDF) 1 Page - STMicroelectronics |
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TSH173 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 13 page  March 2007 Rev 1 1/13 13 TSH173 Triple video buffer with filter for SD video Features ■ 4.5V to 5.5V single supply operation ■ R-G-B, Y-Pb-Pr, Y-C-CVBS driving ■ 3 channels with 6dB gain buffer ■ 3 video reconstruction filters for SD ■ 3 internal input DC level shifter ■ No input capacitor is required ■ Very low harmonic distortion ■ Each output can drive AC- or DC-coupled 150 Ω loads ■ Tested on 5V power supply ■ Data min. and max. are tested during production Applications ■ Set top boxes ■ DVD players/recorders ■ High-end video systems ■ Standard definition TV (SD) ■ Multimedia products Description The TSH173 is a single supply triple video buffer featuring an internal gain of 6dB and an internal low pass filter of 8.2MHz cut-off frequency for each channel to fit with Standard Definition requirements for video line interfaces. Another advantage of the TSH173 is its input DC level shifter to drive the video signal on a 75 Ω video line without any damage to the synchronization tip, while using a single 5V power supply with no input capacitor. The DC level shifter is internally fixed and optimized to keep the output video signal between low and high output rails in the best position to improve linearity. This datasheet gives technical information on using the TSH173 as a R-G-B, Y-Pb-Pr, or Y-C- CVBS driver for video DAC outputs on a video line. The TSH173 is available in SO8 plastic package. OUT2 1 IN2 OUT1 +Vcc 2 3 7 8 OUT3 IN1 4 6 GND SO8 5 DC Shifter 6dB 6dB 8.2MHz 5th order 6dB IN3 8.2MHz 5th order 8.2MHz 5th order Pin connections (top view) www.st.com |
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