The TB1254N is a TV signal processor IC, which contains PIF, SIF, Video, Chroma and deflection signal processors for worldwide Multi-color systems. Also, it has AV switch for TV/EXT inputs.

The line-up and flexibility of this TB1251 series contributes to reduce development costs and components in a TV sets.

FEATURES

IF STAGE

• Multi-system IF

• SIF 4.5 ~ 6.5 MHz

• One External BPF for Multi-SIF carrier

• Inter carrier inputs

• VCO tank coil alignment free

• for L system, Positive demodulation V low Ch

VIDEO STAGE

• Built-in Y delay line (8 adjustable steps)

• Built in C trap filter (Switchable)

CHROMA STAGE

• Multi-color Demoduration

• Automatic Chroma Identification

• 1 Xtal for Multi-color Systems (3.58MHz/4.43MHz/M-PAL/N-PAL)

• Built-in1H Delay line

• Cb/Cr input ports

• Built-in BPF / TOF

• Fsc Output

• Two NTSC demodulation phase

TEXT STAGE

• Built-in AKB

AKB on/off

AKB Color temperature control

• Analog RGB interfaces

• ABL / ACL

DEFLECTION STAGE

• Built-in H-VCO

• ramp distortion correction

• Stand Along Sync in port

• Sand Castle Pulse Output (HD+VD+Gate Pulse)

AV SWITCH

• Visual TV / EXT inputs

• Audio TV / EXT inputs