TB1227BN

The TB1227BN that is a signal processing IC for the PAL/NTSC color TV system integrates video,chroma and synchronizing signal processing circuits together in a 56-pin shrink DIP plastic package.Also,TB1227BN makes it possible to set or control various function through the built-in I2C bus line.

Features of the TB1227BN are:(1)vedio section:built-in trap filter,black expansion circuit,variable DC regeneration rate,Y delay line,sharpness control by aperture control, correction,VSM output;(2)chroma section:built in 1H delay circuit,PAL base band demodulation system,one crystal color demodulation circuit,automatic system discrimination,system forced mode,1H delay line also serves as comb filter in NTSC demodulation,built-in band-pass filter color limiter circuit,Fsc output;(3)synchronizing deflecting section:built-in horizontal VCO resonator,adjustment-free horizonatal/vertical oscillation by count-down circuit,double AFC circuit,vertical frequency automatic discrimination circuit,vertical ramp output,vertical amplitude adjustment,vertical linearity/S-shaped curve adjustment,SCP output;(4)test section of the TB1227BN:linear RGB input,ODS RGB input,cut/off-drive adjustment,RGB primary signal output.

The absolute maximum ratings of the TB1227BN can be summarized as:(1):the characteristic is supply voltage,the symbol is VCCMAX,the rating is 12,the unit is V;(2):the characteristic is permissible loss,the symbol is PDMAX,the rating is 2190,the unit is mW;(3):the characteristic is power consumption declining degree,the symbol is 1/Qja,the rating is 17.52,the unit is mW/;(4):the characteristic is input terminal voltage,the symbol is Vin,the rating is GND-0.3 to VCC+0.3,the unit is V;(5):the characteristic is input signal voltage,the symbol is ein,the rating is 7,the unit is Vp-p;(6):the characteristic is operating temperature,the symbol is Topr,the rating is -20 to 65,the unit is ;(7):the characteristic is storage temperature,the symbol is Tstg,the rating is -55 to 150,the unit is .