SANYO LA7975 Datasheet
Ordering number: EN3994B
Monolithic Linear IC
LA7975
PAL SIF Converter Circuit
for TV and VCR Multi-system
Overview
The LA7975 is an IC that converts PAL SIF signals (5.5 MHz,
6 MHz, and 6.5 MHz) to 6 MHz. For the sake of high sound
quality, this IC uses a unique mixer technique to supress
interference from NICAM signals.
Functions
.
Mixer, amplifier, oscillator, oscillator mute
Features
.
Resistant to interference by NICAM signals
.
Small SIP-5 package
.
Wide range of usage voltage (5 V to 12 V)
Specifications
Maximum Ratings at Ta = 25°C
Package Dimensions
unit : mm
3042C-SIP5
[LA7975]
SANYO : SIP5
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Maximum feed current
Allowable power dissipation Pd max Ta % 70°C 200 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –40 to +150 °C
max 13.2 V
CC
I
max 3 mA
5
I
max 1 mA
4
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
Operating voltage range V
CC
op 5to12 V
CC
9V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
73096HA(II)/8282TS No.3994-1/6
LA7975
Operating Characteristics at Ta = 25°C, VCC=9V
Parameter Symbol Conditions Test point min typ max Unit
Current drain I
5.5 MHz G5.5 80 dB/µV input Pin 5 10 13.5 17 dB
Conversion gain
Oscillation level V
Maximum output level V
Input impedance Ri 5.5 MHz input 4.8 kΩ
Pin voltages
500 kHz level difference
relative to 6 MHz
Maximum input level V
Oscillation stop current I
6.5 MHz G6.5 80 dB/µV input Pin 5 10 13.5 17 dB
6.0 MHz G6.0
CC
80 dB/µV input, Pin 4
grounded with 10 kΩ
OSC
max 5.5 MHz 100 dB/µV input Pin 5 109 112 115 dB/µV
O
V1 Pin 1 2.6 3 3.4 V
V4 Pin 4 7.6 8 8.4 V
V5 Pin 5 7.2 7.6 8 V
OSC leak Pin 5 30 44 dB
max 90 dB/µV
IN
4
Sample Application Circuit
Pin 2 5 6.5 9 mA
Pin 5 18.5 22 25.5 dB
Pin 4 15 36 80 mVp-p
Pin 4 300 µA
Oscillator
500 kHz CSB503E5 Murata Industries, Ltd.
1.5 MHz CSA1.500MK2 Murata Industries, Ltd.
500 kHz EFOA500K04S Matsushita Electric, Ltd.
Unit (resistance: Ω, capacitance: F)
No.3994-2/6
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