MITSMI MM1108XS, MM1108XD, MM1108XF Datasheet

MITSUMI

No-adjustment Sync Separator MM1108

No-adjustment Sync Separator

Monolithic IC MM1108

Outline

This IC is a no-adjustment sync separator IC designed for use in VCR, TV and other video equipment.

Features

1. Low current consumption 4.4mA typ.

2. Open collector output

3. Built-in 3V regulator handles power supply ripple

4. Built-in capacitor for vertical sync separation

5. Time from vertical signal to H. SYNC output re-sync reduced (relative to LVA519)

6. Supports both PAL and NTSC formats

7. Sync separation level can be adjusted with external constants

Package

SOP-8C (MM1108XF)
SIP-8A (MM1108XS)
DIP-8B (MM1108XD)

Applications

1. TV

2. VCR

3. VCR with camera

Block Diagram

MITSUMI

Pin Description

No-adjustment Sync Separator MM1108

Pin no. Pin name

1 VCC

2 SC

3 VCO

4 LPF

Internal equivalent circuit diagram

Function

Power supply voltage pin. Impresses 5V.

VCO integration pin
Free run frequency determined by external
capacitor between Pin 2 and GND, and
external resistor between Pin 3 and GND.

VCO input pin
Pin 4 output is input via external loop filter.

Phase comparator output pin.

5 GND

6 VIN

7 V.SYNC

8 H.SYNC

GND

Signal input pin
Inputs video signal.

V. SYNC output pin
Outputs vertical sync signal separated from
input video signal.

H. SYNC output pin
Outputs horizontal sync signal synchronized
to input video signal, except for vertical
feedback interval. For no signal, outputs
free run frequency horizontal sync signal.