|la1145.pdf||Ordering number: EN 2725A
Monolithic Linear IC
LA1145, 1145M FM IF System (Quadrature Detector) for Car Radio
1. 2. On-chip IF count buffer circuit and microprocessorcontrolled switch circuit for ETR. 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. 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.
unit : mm
SANYO : SIP18Z unit : mm
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