Philips Semiconductors
FM/IF system and microcomputer-based
tuning interface
Product specification
TEA6100
GENERAL DESCRIPTION
The TEA6100 is a FM/IF system circuit intended for
microcomputer controlled radio receivers. The circuit
includes highly sensitive analogue circuitry. The digital
circuitry, including an I2C bus, controls the analogue
circuitry and the AM/FM tuning and stop information for the
microcomputer.
Features
• 4-stage symmetrical IF limiting amplifier
• Software selectable AM or FM input
• Symmetrical quadrature demodulator
• Single-ended LF output stage
• D.C. output level determined by the input signal
• Semi-adjustable AM and FM level voltage
• Multi-path detector/rectifier/amplifier circuitry
• 3-bit level information and 3-bit multi-path information
• Signal dependent 'soft' muting circuit; externally
adjustable
• Reference voltage output (FM mode only)
• 8-bit AM/FM frequency counter with selectable counter
resolution
• Possibility to measure the AM IF frequency at 460 kHz
(250 Hz resolution) and 10,7 MHz (500 Hz resolution)
• Reference frequency can be directly connected to the
reference frequency output of a frequency synthesizer
(TSA6057, 40 kHz) .
PACKAGE OUTLINE
20-lead DIL; plastic (SOT146); SOT146-1; 1996 August 13.
August 1987
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