Sanyo EP58B specifications LA79106V, LV4512V

Tuner IC

LA79106V

Overview

The LA79106V is a voltage synthesized tuner IC that integrates mixers for three bands (VHF (low), VHF (high), and UHF) and an oscillator circuit on a single chip.

Functions

Double balanced mixer (base input): VHF (low)

Double balanced mixers (emitter input): VHF (high) and UHF

Lo output pin

Built-in mixer and oscillator regulator

Supply voltage: VCC = 5 V

Package: SSOP24 (275 mil)

Block Diagram

UOSC1	VLOSC1	UOSC2	VLOSC2	UOSC3	VHOSC1	UOSC4	VHOSC2	VHOSC3	GND	IFOUT1	IFOUT2
24	23	22	21	20	19	18	17	16	15	14	13
			VHFL		UHF		VHFH
								REG
1	2	3	4	5	6	7	8	9	10	11	12
IFT1	IFT2	GND	UIN1	UIN2	VLIN	VHIN1	VHIN2	CC	OSCOUT1	OSCOUT2	BANDSW
								V

Tuner IC

LV4512V

Overview

The LV4512V integrates local oscillator circuits for the VHF and UHF bands, mixers, an IF amplifier, and a PLL circuit for tuning on a single chip. It is controlled using an I2C bus.

Functions

PLL circuit for tuning

I2C bus control

Frequency steps (31.25, 50, and 62.5 kHz when a reference frequency of 4 MHz is used)

Four on-chip Banol switches

Can be controlled at any one of four I2C bus addresses

Supply voltage: VCC = 5 V

Package: SSOP30 (275mil)

Block Diagram

3

4MOSC

CPO

REG3

IFOUT

GND2(PLL)

2(PLL)

UOSCB2

UOSCE2

UOSCE1

UOSCB1

VOSCC2

GND1B

VOSCC1

CC

CPE

CC

V

V

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

Ref OSC

Lock

Charge

Pump

3V MOS

REG

UHF

OSC

VHF

OSC

1/512,640,1024

Phase

Det

SW

Programable DIV

S/R

16/17

1/8

C

BUS

I/F

REG

2

I

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

SCL

SDA

ADR

FMT

BVL

BVH

BU

1

Mixout1

Mixout2

GND1A

VHFin1

VHFin2

UHFin1

UHFin2

CC

V

41 SANYO TV . VCR SANYO TV . VCR 42