2013年10月26日星期六

Analogue and Discretes Analogue video decode for 100mW

Analogue and Discretes Analogue video decode for 100mW

2013/10/25

06nov13intersil 400Intersil has introduced an analogue video decoder that works without external op-amps.

Typical power consumption is approximately 100mW for composite inputs, said the firm, and a power-down mode further reduces consumption.

Called TW9990, the chip supports NTSC, PAL, SECAM, single-ended, differential, and pseudo differential composite video inputs as well as S-Video.

Direct support for differential inputs eliminates the need for an external op-amp, and a

single 27MHz crystal works for all the video standards.

IT also has built-in programmable short-to-battery and short-to-ground detection. “This is an essential functionality required by OEMs when supporting a differential signal input,” claimed Intersil.

Use is expected in automotive rear camera displays.

At a glance
NTSC/PAL/SECAM 4H adaptive comb filter Y/C separation
Two 10bit ADCs and analogue clamping
Programmable static gain or automatic gain control for Y channel
Analogue anti-alias filter
Image enhancement with peaking and CTI
Synchronisation processing and sync detection for non-standard and weak signals
Short-to-battery and short-to-ground detection
Wettable flank QFN package for visual solder inspection
AEC-Q100 Grade 2 Qualified

There is an evaluation board: TW9990-NA1-GR-EVAL.



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