Sanyo EP58B, Catalogue

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LA79106V
41 42
SANYO TV . VCR SANYO TV . VCR
LV4512V
1 2 4 3 5 6 7 8 9 10 11 12
24 23 21 22 20 19 18 17 16 15 14 13
VHF
L
UHF VHF
H
REG
IFT1 IFT2
GND UIN1 UIN2 VLIN
VHIN1 VHIN2
V
CC
OSCOUT1 OSCOUT2
BANDSW
UOSC1 VLOSC1 UOSC2 VLOSC2 UOSC3 VHOSC1 UOSC4 VHOSC2 VHOSC3 GND IFOUT1 IFOUT2
I 2
C
BUS
I/F
1 2 3 4 5 6 7 8 9 10 11 12 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
V
CC
1
Mixout1 Mixout2 GND1A
VHFin1 VHFin2 UHFin1 UHFin2
VOSCC1 GND1B VOSCC2 UOSCB1 UOSCE1 UOSCE2 UOSCB2 IFOUT REG3 CPE CPO 4MOSC V
CC
3
V
CC
2(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 I
2
C bus.
PLL circuit for tuning
I
2
C 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 I
2 C 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