TB1245N

`  Video section
` Built-in trap filter
` Black expansion circuit
` Variable DC regeneration rate
` Y delay line
` Sharpness control by aperture control
` correction
`  Chroma section
` Built-in 1 H Delay circuit
` PAL base band demodulation
` One crystal color demodulation circuit
` Automatic system discrimination
` Built-in band-pass filter
` Color limiter circuit
`  Synchronizing deflecting section
` Built-in horizontal VCO resonator
` Adjustment-free horizontal / vertical oscillation By count-down circuit
` Double AFC circuit
` Vertical frequency automatic discrimination circuit
` Horizontal / vertical holding adjustment
` Vertical ramp output
` Vertical amplitude adjustment
` Vertical linearity / S-shaped curve adjustment
` E / W output
`  Text section
` Linear RGB input
` OSD RGB input
` Cut / off-drive adjustment
` RGB primary signal output

Note 1: In the condition that IC is actually mounted. See the diagram below.
Note 2: This IC is not proof enough against a strong E-M field by CRT which may cause function errors and / or poor
characteristics.

Keeping the distance from CRT to the IC longer than 20 cm, or if cannot, placing shield metal over the IC, is
recommended in an application.

TB1245N that is a signal processing IC for the PAL / NTSC / SECAM color TV system integrates video, chroma and synchronizing signal processing circuits together in a 56pin shrink DIP plastic package.

TB1245N incorporates a high performance picture quality compensation circuit in the video section, an automatic PAL / NTSC / SECAM discrimination circuit in the chroma section, and an automatic 50 / 60 Hz discrimination circuit in the synchronizing section. Besides a crystal oscillator that internally generates 4.43 MHz, 3.58 MHz and M / N-PAL clock signals for color demodulation, there is a horizontal PLL circuit built in the IC.
The PAL / SECAM demodulation circuit which is an adjustment-free circuit incorporates a 1H DL circuit inside for operating the base band signal processing system.

Also, TB1245N makes it possible to set or control various functions through the built-in I²C bus line.