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Overview
The LA7567N and LA7567NM are PAL/NTSC multi-
format audio VIF/SIF IF ICs that adopt a semi-
adjustment-free system. The VIF block adopts a technique
that makes AFT adjustment unnecessary by adjusting the
VCO, thus simplifying the adjustment steps in the
manufacturing process. PLL detection is adopted in the
FM detector to support multi-format audio detection. A
built-in SIF converter is included to simplify multi-format
system designs. A 5-V power-supply voltage is used to
match that used in most multimedia systems. In addition,
these ICs also include a buzz canceller to suppress Nyquist
buzz and provide high audio quality.
Functions
[VIF]
VIF amplifier PLL detector BNC RF AGC
EQ amplifier AFT IF AGC Buzz canceller
[First SIF]
First SIF First SIF detector AGC
[SIF]
Multi-format SIF converter Limiter amplifier PLL
FM detector
Features
Both AFT and SIF inductors built in, thus making
adjustment of external inductance unnecessary.
A PAL/NTSC multi-format audio system can be
constructed easily.
Built-in buzz canceller for excellent audio performance.
V
CC
= 5 V, low power dissipation (250 mW)
Specifications
Maximum Ratings
at Ta = 25°C
Package Dimensions
unit: mm
3067-DIP24S
unit: mm
3112-MFP24S
Monolithic Linear IC
50698RM (OT) No. 5765-1/14
SANYO: DIP24S
[LA7567N]
SANYO: MFP24S
[LA7567NM]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
TV and VCR VIF/SIF IF Signal-Processing Circuit with
PAL/NTSC Multi-Format Audio Support
LA7567N, 7567NM
Ordering number : EN5765
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
V13, V17
6
V
Circuit voltage
V
CC
–3
V
I6
mA
Circuit current
I10
–10
mA
I24
–2
mA
TA
≤
50°C, Independent IC [LA7567NM]
*
: Mounted on a printed circuit board
TA
≤
70°C, Independent IC [LA7567N]
420
720
500
mW
mW
mW
Allowable power dissipation
Pd max
Operating temperature
Topr
–20 to +70
°C
Storage temperature
Tstg
–55 to +150
°C
Note: When mounted on a 65
×
72
×
1.6 mm paper/phenolic resin printed circuit board.