EE Product News

Video Buffer Extends Battery Life

Extending battery time in mobile video products and personal media players, the TSH122 video buffer specifies an operating current of 1.7 mA and draws a standby current of 4 nA typical, 500 nA maximum. The device is a single-channel CVBS buffer/filter with 6 dB of internal gain, optimized for dc or ac coupling to a 75-Ohm cable. Its input directly connects to a video DAC and, by including a sixth-order reconstruction filter for attenuation of DAC sampling aliases, the device forecasts cost and board-space savings. Other features include gain-setting resistors, a 2.2 mm x 2.4 mm SC70-6 (SOT323-6) package, differential gain of 0.5%, differential phase of 0.5 degrees, group delay of 10 ns, an attenuation at 27 MHz of better than –36 dB, and a gain flatness beyond 5.4 MHz. Price for the TSH122 is $0.50 each/1,000. STMICROELECTRONICS, Lexington, MA. (888) 787-3550.


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