Datasheet

August 2008 Rev 1 1/16
16
TSH122
Ultra low power video buffer/filter with power-down
Features
■ Very low consumption: 1.7 mA
■ Ultra low power-down mode: 4 nA typ.,
500 nA max.
■ Internal 6
th
order reconstruction filter
■ Internal gain of 6 dB
■ Rail-to-rail output buffer for 75 Ω video line
■ Excellent video performance
– Differential gain 0.5%
– Differential phase 0.10°
– Group delay of 10 ns
■ SAG correction
■ Bottom of video signal close to 0 V
■ Tested with 2.5 V and 3.3 V single supply
■ Data min. and max. are physically tested and
guaranteed during production (consumption,
gain, filtering, and other parameters are
guaranteed)
Applications
■ Mobile phones
■ Digital still camera
■ Digital video camera
■ Portable DVD players
Description
The TSH122 is a video buffer that uses a voltage
feedback amplifier, with an internal gain of 6 dB,
an output rail-to-rail, an internal input DC-shift and
a SAG correction. A power-down function allows
switching to a sleep mode with an ultra-low
consumption.
The TSH122 features a 6th-order internal
reconstruction filter to attenuate the parasitic
frequency of 27 MHz from the clock of the video
DAC.
The TSH122 operates from 2.25 to 5 V single
power supplies and is tested at 2.5 V and 3.3 V.
The TSH122 is a single operator available in a
tiny SC70 plastic package for space saving.
1
2
4
3
6
5
OUT
SAG
IN
GND
Vcc
EN (enable)
Top view
1
2
4
3
6
5
OUT
SAG
IN
GND
Vcc
EN (enable)
Top view
SC70
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