The TB1240AN is a single-chip integrated circuit from Toshiba that functions as both an IF demodulator and video processor for PAL and NTSC color television systems. It demodulates PAL, NTSC, and SIF signals into separate R/G/B primary color and audio signals. It can also be used in combination with Toshiba's SECAM processor IC to support multi-color systems. The TB1240AN has analog R/G/B outputs, making it suitable for applications like picture-in-picture displays. It also features a 12-bit bus interface for external control of functions like brightness and color.

1. TOSHIBA TB1240AN
TENTATIVE TOSHIBA Bi-CMOS INTEGRATEO CIRCUIT SILICON MONOliTHIC
TB1240AN
PAL/ NTSC 1CHIP (IF + VCD PROCESSOR) IC
TB1240AN is the IF & Video proc~ing IC for PAL/ NTSC
color TV synem. This IC demodulates PAL/NTSC PIF, SIF
and composlt@ video signal to R/G/8 primary colors and
Audio signals. This IC can constitute Multi·Color System
by combined with TA1275AZ (SECAM Processor).
TB1240AN has the analog R/G/8 interface, therefore it is
easy to make up PIP syswm by using this IC.
T81240AN has an 12( BUS interface. Various controls
(Brightness, Color etc.) can be done via two bus lines..
FEATURES
IF stage
• lntercarrier/Splitcarrier Input
• !>ouble Time Constant IF A~C
• 811> ~onttolle<l Rf AGC
• Bus Controlled PiF VCO
• L-SE~AM Demo~ulatlon
• PLL SIF Dem~ulation (for 4.5-6.5 MHz multi-SIF, ThankleiS)
~OIPS&.P-'0().1.18
Weight : 5.55 g (Typ.)
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