LA1145 Datasheet, PDF (1/17 Pages) Sanyo Semicon Device – FM IF System (Quadrature Detector) for Car Radio

Ordering number: EN 2725A
Monolithic Linear IC
LA1145, 1145M
FM IF System (Quadrature Detector) for Car Radio
Features
1. On-chip IF count buffer circuit and microprocessor-
controlled switch circuit for ETR.
2. Compared to the LA1140, the LA1145, 1145M offer:
1 Improved signal meter output linearity;
2 Improved band mute temperature stability;
3 Improved S/N ratio;
4 Improved sound quality at weak signal input when
noise is present, and;
5 Improved AMR characteristics during weak signal
input.
3. Reduced parts’ count simplifies design:
1 On-chip IF count buffer circuit;
2 On-chip SD circuit — sensitivity can be set
independently of soft mute characteristics, and;
3 Variable S-meter gradient — three pin S-meter output
(pins 5, 16 and 17) facilitates independent control of
SNC and HCC.
Package Dimensions
unit : mm
3115-SIP18Z
[LA1145]
unit : mm
3036B-MFP20
SANYO : SIP18Z
[LA1145M]
SANYO: MFP20
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
93097HS(II)/3132TS/2118TA No.2725-1/17