ML6415 查看數據表（PDF） - Fairchild Semiconductor

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ML6415

S-Video Filter with Summed Composite Output, Sound Trap, and Group Delay Compensation

Fairchild Semiconductor 

DATA SHEET

ML6415

Chrominance (C) I/O

The chroma input is driven by a low impedance source of

0.7Vpp or the output of a 75Ω terminated line. The input is

required to be AC coupled via a 0.1µF coupling capacitor

which allows for a clamp setting time of 5ms. The chroma

output is capable of driving an AC coupled 150Ω load at

2VP-P, or 1VP-P into a 75Ω load. Up to 35pF of load capaci-

tance can be driven without stability or slew issues. A 0.1µF

AC coupling capacitor is recommended at the output.

(This reduces the circuit cost as chroma does not contain

low frequency components.)

Composite Video (CV) Output

The composite video output is capable of driving 2 loads to

2VP-P. It is intended to drive a TV and a VCR. Either the TV

input or the VCR input can be shorted to ground and the

other output will still meet specifications. Up to 35pF of load

capacitance (at the output pin) can be driven without stability

or slew issues.

RF Modulator Output

The RF modulator output is capable of driving a 600Ω load

to 2VP-P, but is primarily intended to drive a modulator load.

Typical Applications Diagram

0.1µF

1

YIN

ENCODER

0.1µF

4

CIN

5.0V

NOTCH

AND GROUP

DELAY

PROTECTION

4th-ORDER

FILTER

+

Σ

+

4th-ORDER

FILTER

7

3

4.5MHz FM SOUND

+

2Σ

VIDEO MODULATOR

TO CHANNEL 3 OR 4

8

220µF

75Ω

6

220µF 75Ω

5

220µF 75Ω

220µF

75Ω

VIDEO CABLES

YOUT

75Ω

CVOUT TO TV

75Ω

CVOUT TO VCR

75Ω

COUT

75Ω

0.1µF

1µF

Figure 1. Coupled S-Video, Composite Video Line Driver, Sound Trap, and Group Delay Pre-distortion

REV. 2F May 2003

3

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