TEA5757HL 数据手册 ( 数据表 ) - Philips Electronics

GENERAL DESCRIPTION
The TEA5757HL; TEA5759HL is a 48-pin integrated AM/FM stereo radio circuit including a novel tuning concept. The radio part is based on the TEA5712.
The TEA5757HL is used in FM-standards in which the local oscillator frequency is above the radio frequency (e.g. european and american standards).

FEATURES
• The tuning system has an optimized IC partitioning both from application (omitting interferences) and flexibility (removable front panel option) point of view: the tuning synthesizer is on-chip with the radio
• The tuning quality is superior and requires no IF-counter for stop-detection; it is insensitive to ceramic filter tolerances
• In combination with the microcontroller, fast, low-power operation of preset mode, manual-search, auto-search and auto-store are possible
• The local (internal) controller function facilitates reduced and simplified microcontroller software