Sanyo EP58B Catalogue page 22

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: V CC = 5 V
Package: SSOP24 (275 mil)
24 23 22 21 20
VHF
L
1 2 3 4 5
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SANYO TV . VCR
Block Diagram
19 18 17 16 15 14 13
UHF VHF
H
REG
6 7 8 9 10 11 12
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
2
on a single chip. It is controlled using an I C bus.
Functions
PLL circuit for tuning
2
I 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
2
Can be controlled at any one of four I C bus addresses
Supply voltage: V CC = 5 V
Package: SSOP30 (275mil)
Block Diagram
30 29 28 27 26 25 24
1 2 3 4 5 6 7
23 22 21 20 19 18 17 16
8 9 10 11 12 13 14 15
SANYO TV . VCR
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