Sanyo EP58B specifications LA76843N, LA7840

I2 C Bus Control Lineup

LA76810 Series

LA76843N

Overview

The LA76810 series are I2C bus controller ICs that support the different TV broadcast formats used worldwide and aim for rationalization of color TV set design, improved manufacturability, and lower total costs

Single crystal multiformat system that supports the different TV broadcast formats used worldwide ICs optimal for each individual broadcast standard deployed as a pin-to-pin compatible lineup

·Multiformat system: LA76818A (YCbCr support), LA76828N (YCbCr and E/W support)

·NTSC system: LA76843N/LA76835A (YCbCr and E/W support), LA76835NM (YCbCr and E/W support)

Adjustment-free VIF/SIF, audio trap/audio bandpass filters

Adjustment-free horizontal resonator system

Simplified SG

Supply voltage: VCC = 5 V/9 V

Package: DIP54S (600mil), QIP80E (14 20) (LA76835NM only)

Functions and Features

VIF/SIF

·Adjustment-free VCO, buzz canceller

·RF AGC/video level/FM level control

Black stretch, sharpness control with coring on/off control, built-in variable Y system filters (Y-DL and chrominance trap) Chrominance bandpass filter, demodulation angle control

Block Diagram

SVO

FBP

V/C

HS

VS

IN

S CARRIER OUT

EXT

VCC 5V

FSC

X-RAY

VIDEO

I IN-V IN

EXT-V IN

AUDIO

OUT

[S-C IN]

[Y-IN]

+

IN

V/C

CCD/

VCO

+

+

GND

+

+

HOR

REF

+

GND

+

+

+

+

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

BPF

A2C

CLMP

CLMP

FBP

PLL

VXO

CW

X-RAY

VIDEO

SPLL

AMP

RESET

HOR

VIDEO

APC1

TINT

FILTER

VCO

SW

ADJ

BPF

SND

SW

BPF

1/256

TRAP

TRAP

(BYPASS)

LIM

AOC

HOR

AMP

AFT

DEMO

COLOR

C/D

DELAY

KIL

CLAMP

VIDEO

LINE

SYNC

DET

SEP

AFC1

DC

FM

PEAKING

BLACK

REST

CONTRAST

RGB

VER

DET

CORING

STRETOH

WPL

BRIGHT

MATRIX

AFC2

IF AGC

SEP

VIF

OSD

OSD

VER

PHASE

SW

FIX GAIN

SW

C/D

SHIFTER

DC

RF AGC

BUS

ABL

DRIVE/OUT-OFF

C_SYNC

VER

HOR

HOR

VOL

CLAMP

OUT

RAMP

VCC

OUT

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

VCC

+

+

+

AUDIO OUTPUT

SAW

+

R

G

B

SYNC

VER

HOR

IF

FILTER

OUT

OUT

OUT

OUT

OUT

OUT

VCC5V

RF AGC

ABL

R

G

B

FB

RGB

IF IN

AFT

IN

IN

IN

IN

VCC 9V

HOR

VCC 9V

Vertical Output IC

LA7840

Overview

The LA7840 is a vertical deflection output IC for high-definition TV and CRT displays in systems that use a bus control system signal-processing IC. This IC can directly drive (including the DC component) the deflection yoke from the sawtooth wave output from the bus control system signal-processing IC. The color TV vertical deflection system adjustment function can be controlled from the bus system when this IC is used in conjunction with a SANYO LA768X or LA769XX series TV bus control system signal- processing IC.

The LA7840 provides a maximum deflection current of 1.8 A p-p, and thus is optimal for small to medium diameter CRTs.

Functions

Low power operation achieved by using integrated charge pump circuit

Vertical output circuit

Thermal protection circuit

Excellent crossover characteristics

Supports DC coupling

Package: SIP7H

Block Diagram

Thermal					Pump UP
Protection
				-
			AMP
				+
1	2	3	4	5	6	7
GND	Ver.OUTPUT	CC	NON INV.INPUT	INVERTING INPUT	CC	PUMP UP OUT
		OUTPUT STAGE V			V

23 SANYO TV . VCR SANYO TV . VCR 24