N1506 MS PC No.6954-1/12
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
LA75665NM
Overview
The LA75665NM is a semi-adjustment-free VIF/SIF IC with PAL/NTSC multi-sound support. It adopts a VIF block
circuit design in which VCO adjustment obviates the need for AFT adjustment. This can simplify end product adjustment
during manufacturing. The SIF block adopts PLL detection to support multiple audio detection. To make designing end
products with multi-sound support easier, the LA75665NM provides four SIF inputs and an internal input selection switch.
Furthermore, this switch can also handle video system sound trap switching. The LA75665NM also includes a buzz
canceller to suppress Nyquist buzzing.
Functions
[VIF Block]
VIF amplifier
PLL detector
BNC
RF AGC
Equalizer amplifier
AFT
IF AGC
Buzz canceller
[First SIF Block]
First SIF amplifier
First SIF detector
AGC
[SIF Block]
Multi-input selector switch
Limiter amplifier
PLL FM detector
Features
No coils are required for the AFT and SIF circuits, which are thus adjustment free.
Allows a PAL/NTSC multi-sound system to be implemented easily.
Built-in buzz canceller for superb audio characteristics.
Monolithic Linear IC
VIF/SIF IF Signal Processing Circuit
with PAL/NTSC Multi-Sound Support
for TVs and VCRs
Ordering number : EN6954