TEA5757; TEA5759

General description

The TEA5757; TEA5759 is a 44-pin integrated AM/FM stereo radio circuit including a novel tuning concept. The radio part is based on the TEA5712.

The TEA5757 is used in FM-standards in which the local oscillator frequency is above the radio frequency (e.g. European and American standards).

The TEA5759 is the version in which the oscillator frequency is below the radio frequency (e.g. Japanese standard).

The new tuning concept combines the advantages of hand tuning with electronic facilities and features. User ?intelligence? is incorporated into the tuning algorithm and an improvement of the analog signal processing is used for the AFC function.

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
• The high integration level (radio and tuning synthesizer on one chip) means fewer external components with regard to the communication between the radio and the microcontroller (90% less components compared to the digital tuning application of a radio IC with external PLL tuning function) and a simple and small printed-circuit board
• There will be no application considerations for the tuning system, with regards to quality and high integration level, since there will be no external 110 MHz buffers, loop filter or false lock elimination
• The inherent FUZZY LOGIC behaviour of the Self Tuned Radio (STR), which mimics hand tuning, yields a potentially fast yet reliable tuning operation
• The level of the incoming signal at which the radio must lock is software programmable
• Two programmable ports
• High selectivity with distributed IF gain
• Soft mute
• Signal dependent stereo-blend
• High impedance MOSFET input on AM
• Wide supply voltage range of 2.5 to 12 V
• Low current consumption 18 mA at AM and FM (including tuning synthesizer)
• High input sensitivity
• Low output distortion
• Due to the new tuning concept, the tuning is independent of the channel spacing.

Products/packages

Products in the above table are all in production. Some variants are discontinued; click here for information on these variants.

Pricing/ordering/availability

Design support

Application Notes

AN96017_1; Outline specification CCA210S microcontroller for a CD/Radio/Cassette recorder system (14-Mar-03)

AN96020_1; Outline Specification CPR120S, microcontroller for a Portable Radio system. V1.0 (01-Mar-96)

Support Documents

75015725; NXP FM stereo ICs with RDS and AM options TEA57xx for portable applications (2006-09-01)

75011626; Nexperia(tm) PNX7100 reference design (2003-08-04)

75013538; Portability without compromise Semiconductor solutions for next-generation personal media devices (2004-09-07)

Parametrics/similar products

Similar products
TEA5757; TEA5759 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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