SM5307C

SEIKO NPC CORPORATION —8

FUNCTIONAL DESCRIPTION

Filter Select and Filter-bypass Mode

The SM5307C is mounted the 5th-order lowpass filter (LPF), and is possible to use changing four modes of

SD1, SD2, HD and filter-bypass mode for corresponding to input video signal. The filter mode changes with

the FC1 and FC2 pins.

Input Multiplexer

The SM5307C is mounted the two input multiplexer for each channels. The MUXSEL pin selects the input

signals.

Disable Mode Function

The SM5307C has the disable mode function. When DISABLE pin set to “H”, The SM5307C operation

becomes disable mode. In disable mode operation, current consumption becomes up to 2.5mA and video signal

input and output pins are setting high-impedance.

Control pins

Filter mode

Filter passband (typ)

FC1

FC2

CH-1

CH-2

CH-3

L

L

SD1 mode

6.75MHz

6.75MHz

6.75MHz

H

L

SD2 mode

13.5MHz

13.5MHz

13.5MHz

L

H

HD mode

30MHz

30MHz

30MHz

H

H

Filter-bypass mode

80MHz

80MHz

80MHz

Control pin

Selected input

MUXSEL

CH-1

CH-2

CH-3

L

IN1A

IN2A

IN3A

H

IN1B

IN2B

IN3B

Control pin

SM5307C operation

DISABLE

L

Normal operation

H

Disable mode