LA79106V

41 42

SANYO TV . VCR SANYO TV . VCR
LV4512V
12 43567891011 12
24 23 2122 20 19 18 17 16 15 14 13
VHFLUHF VHFH
REG
IFT1
IFT2
GND
UIN1
UIN2
VLIN
VHIN1
VHIN2
VCC
OSCOUT1
OSCOUT2
BANDSW
UOSC1
VLOSC1
UOSC2
VLOSC2
UOSC3
VHOSC1
UOSC4
VHOSC2
VHOSC3
GND
IFOUT1
IFOUT2
I2C
BUS
I/F
1234567891011 1 2 13 14 15
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
S/R 1/512,640,1024
Programable DIV
Phase
Det
SW
Ref OSC
Lock
3V MOS
Charge
Pump
REG
UHF
OSC
VHF
OSC
REG 1/8
16/17
SCL
SDA
ADR
FMT
BVL
BVH
BU
VCC1
Mixout1
Mixout2
GND1A
VHFin1
VHFin2
UHFin1
UHFin2 VOSCC1
GND1B
VOSCC2
UOSCB1
UOSCE1
UOSCE2
UOSCB2
IFOUT
REG3
CPE
CPO
4MOSC
VCC3
VCC2(PLL)
GND2(PLL)

Tuner IC Tuner IC

Overview
Functions
Block Diagram Block Diagram
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.
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.
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)
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)
Overview
Functions