TC90A80N/F

2002-12-04

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC90A80N,TC90A80F

3-Line Digital Comb Filter for VCR, YNR/CNR, and Skew Correctors (NTSC)

The TC90A80N/F is a 3-line digital Y/C (luminance/

chrominance) separation IC for VCR.

In addition to YNR and CNR used for noise reduction in the

playback signal, the IC incorporates skew correctors for special

playback. The IC is then suitable for processing S-VHS recorded

playback signals.

Features

• TV format: NTSC (3.58)

• Dynamic comb filter

• YNR circuit

• CNR circuit

• Luminance signal non-linear vertical edge corrector (with

coring function)

• Luminance signal horizontal frequency characteristic

corrector (with coring function)

• Luminance signal line noise canceller

• Record/playback input switch circuit (switches between Y/C

and Y inputs)

• Y and C input pins, independently one another (Y: sync tip

clamp; C: center bias)

• Re-mixer circuit after Y/C sharpness processing

• Skew detector and correctors (NTSC ×5 Mode: in units of 0.2

H)

• 1-H delay line (2 channels)

• 5-V single power operation

TC90A80N

TC90A80F

Weight

SDIP28-P-400-1.78 : 1.7 g (typ.)

SOP28-P-450-1.27 : 0.8 g (typ.)