Ordering number : EN5764
Monolithic Linear IC
Overview
The LA7566 is a VIF/SIF IC that supports PAL and
NTSC multisound and that adopts a semi-adjustment-free
system. To simplify adjustment, the VIF block adopts a
technique in which AFT adjustment is no longer required
by VCO adjustment. The SIF block supports audio multi-
detection by adopting a PLL detection technique. The SIF
block provides 4 inputs with IC internal switching for easy
design of multi-sound systems. Additionally, these
switches can also be used for video system sound trap
switching. The LA7566 also includes a buzz canceller that
suppresses Nyquist buzz to achieve improved audio
quality.
Package Dimensions
unit: mm
3067-DIP24S
[LA7566]
Functions
Allowable power dissipation, Pd max — W
SANYO: DIP24S
[VIF Block]
• VIF amplifier • PLL detector • BNC • RF AGC
• EQ amplifier • AFT • IF AGC • Buzz canceller
[First SIF Block]
• First SIF amplifier • First SIF detector • AGC
[SIF Block]
• Multiple input switch • Limiter amplifier • PLL FM
detector
Features
• No coils are used in the AFT and SIF blocks, making
these circuits adjustment free.
• PAL / NTSC multisound system can be constructed
easily.
• Built-in buzz canceller for excellent audio performance
Ambient temperature, Ta — °C
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Circuit voltage
Symbol
V
CC
max
V7, V9, V10, V17
I1
Circuit current
I13
I18
Allowable power dissipation
Operating temperature
Storage temperature
Pd max
Topr
Tstg
Conditions
Ratings
10
V
CC
–2
–3
–10
720
–20 to +70
–55 to +150
Unit
V
V
mA
mA
mA
mW
°C
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
31398HA (OT) No. 5764-1/11
SANYO [ SANYO SEMICON DEVICE ]
