LA7566 Datasheet, PDF (1/11 Pages) Sanyo Semicon Device – VIF/SIF IF Signal-Processing Circuit with TV/VCR PAL and NTSC Multisound Support

Ordering number : EN5764
Monolithic Linear IC
LA7566
VIF/SIF IF Signal-Processing Circuit with TV/VCR PAL
and NTSC Multisound Support
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.
Functions
[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
Package Dimensions
unit: mm
3067-DIP24S
[LA7566]
SANYO: DIP24S
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
Circuit current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V_CC max
V7, V9, V10, V17
I1
I13
I18
Pd max
Topr
Tstg
Conditions
Ratings
Unit
10
V
V_CC
V
–2
mA
–3
mA
–10
mA
720
mW
–20 to +70
°C
–55 to +150
°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