TSH122 Ultra low power video buffer/filter with power-down Features SC70 Very low consumption: 1.7 mA Ultra low power-down mode: 4 nA typ., 500 nA max. th Internal 6 order reconstruction filter Internal gain of 6 dB Rail-to-rail output buffer for 75 video line Excellent video performance ToTop vp viieeww Differential gain 0.5% Differential phase 0.10 ININ 11 66 VccVcc Group delay of 10 ns SAG correction GNDGND ENEN (e (ennablable)e) 22 55 Bottom of video signal close to 0 V Tested with 2.5 V and 3.3 V single supply OUOUTT Data min. and max. are physically tested and SASAGG 33 44 guaranteed during production (consumption, gain, filtering, and other parameters are guaranteed) Applications Description Mobile phones The TSH122 is a video buffer that uses a voltage Digital still camera feedback amplifier, with an internal gain of 6 dB, Digital video camera an output rail-to-rail, an internal input DC-shift and a SAG correction. A power-down function allows Portable DVD players 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. August 2008 Rev 1 1/16 www.st.com 16Absolute maximum ratings and operating conditions TSH122 1 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol Parameter Value Unit (1) V Supply voltage 5.5 V CC V Maximum input amplitude 0 to Vcc V in T Storage temperature -65 to +150 C stg T Maximum junction temperature 150 C j R SC70 thermal resistance junction to ambient area 205 C/W thja R SC70 thermal resistance junction to case 172 C/W thjc Maximum power dissipation for Tj=150C P mW T = +25C 609 max amb T = +85C 317 amb (2) CDM: charged device model 1.5 kV (3) ESD HBM: human body model 1.5 kV (4) MM: machine model 300 V (5) Output short-circuit 1. All voltage values, except differential voltage, are with respect to network terminal. 2. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins. 3. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 k resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 4. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). This is done for all couples of connected pin combinations while the other pins are floating 5. An output current limitation protects the circuit from transient currents. Short-circuits can cause excessive heating. Destructive dissipation can result from short-circuits on amplifiers. Table 2. Operating conditions Symbol Parameter Value Unit (1) V Power supply voltage 2.25 to 5 V CC T Operating free air temperature range -40 to +85 C oper 1. Tested in full production at 0 V/2.5 V and 0 V/3.3 V single power supply. 2/16