The TSH120 is a video buffer that includes a voltage feedback amplifier with an internal gain of 6dB, rail-to-rail output, internal input biasing and SAG correction. A power down function offers a sleep mode with ultra low consumption. The TSH120 also features an internal reconstruction filter in order to attenuate the parasitic 27MHz frequency from the clock of the video DAC.
TSH120主要特性:
■Very low consumption
■Standby mode available
■Internal reconstruction filter
■Internal gain of 6dB
■Rail-to-rail output
■Tested with +2.5V and +3.3V single supply
■Operation supply from +2.2V to +5.5V
■SAG correction
■Excellent video performance
Differential gain 0.5%
Differential phase 0.5°
Group delay=10ns
■Specified for 150load
■Input DC level shifter
■Min. and max. limits are tested in full production
TSH120应用:
■Camera phones
■Digital still camera
■Digital video camera
■Set-top box and DVD video outputs
图1.TSH120带输出电容的电路图
图2.TSH120不带输出电容的电路图
基于TSH120的带SAG修正的视频缓冲器和滤波器
Video buffer and filter with SAG correction based on the TSH120
This evaluation board is based on the TSH120 video buffer. The TSH120 includes a voltage feedback amplifier with an internal gain of 6 dB, rail-to-rail output, internal input biasing and SAG correction. A power-down function provides a sleep mode with ultra low power consumption.
TSH120评估板特性:
■Very low consumption in active and standby mode
■Internal reconstruction filter
■Internal gain of 6 dB
■Rail-to-rail output
■Operating supply voltage from +2.2 V to +5.5 V
■SAG correction
■Excellent video performance
Differential gain: 0.5 %
Differential phase: 0.5°
■Group delay=10 ns
■Specified for 150 load
■Input DC level shifter