Philips tea5591a DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
TEA5591A
AM/FM radio receiver circuit
Product specification
File under Integrated Circuits, IC01
February 1990
Philips Semiconductors Product specification
AM/FM radio receiver circuit TEA5591A
GENERAL DESCRIPTION
The TEA5591A is a 24-pin integrated radio circuit, derived from the TEA5591 and is designed for use in AM/FM portable
radios and clock radios. The TEA5591A differs from the TEA5591 in that it has:
• Separate IF input pins for AM and FM
• A split-up AM-IF stage (for distributed selectivity)
• An LED driver indicator
The main advantage of the TEA5591A is its ability to operate over a wide range of supply voltages (1.8 to 15 V) without
any loss of performance.
The AM circuit incorporates:
• A double balance mixer
• A ‘one-pin’ oscillator with amplitude control operating in the 0.6 to 30 MHz frequency range
• A split-up IF amplifier
• A detector
• An AGC circuit which controls the IF amplifier and mixer.
The FM circuit incorporates:
• An RF input amplifier
• A double balanced mixer
• A ‘one-pin’ oscillator
• Two IF amplifiers (for distributed selectivity)
• A quadrature demodulator for a ceramic filter
• Internal AFC
Features
• LED AM/FM indicator
• A DC AM/FM switch facility
• Three separate stabilizers to enable operation over a wide range of supply voltages (1.8 to 15 V)
• All pins (except pin 10) are ESD protected
PACKAGE OUTLINE
24-lead shrink DIL; plastic (SOT234); SOT234-1; 1996 September 9.
February 1990 2
Philips Semiconductors Product specification
AM/FM radio receiver circuit TEA5591A
QUICK REFERENCE DATA
PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
Supply voltage (pin 8) V
P
Total current consumption
AM part I
FM part I
P
P
Operating ambient
temperature range T
AM performance (pin 1)
Sensitivity V
note 1
= 10 mV V
o
(S + N)/N = 26 dB V
Signal-to-noise ratio V
= 1 mV (S + N)/N − 48 − dB
i
AF output voltage V
amb
i
i
o
Total harmonic distortion THD − 0.7 − %
Signal handling m = 80%; THD = 8% V
FM performance (pin 2)
note 2
Limiting sensitivity −3dB V
Signal-to-noise ratio V
= 2.5 µV (S + N)/N − 26 − dB
i
V
= 1 mv (S + N)/N − 60 − dB
i
AF output voltage V
i
i
o
Total harmonic distortion THD − 0.8 − %
Signal handling V
AM suppression 100 µV< V
<
i
i
100 mV AMS − 40 − dB
1.8 − 15 V
− 14 − mA
− 17 − mA
−15 − + 60 °C
− 3.5 −µV
− 17 −µV
− 45 − mV
− 100 − mV
− 2.3 −µV
− 90 − mV
− 100 − mV
Notes to the quick reference data
1. All parameters are measured in the application circuit (see Fig.4) at nominal supply voltage V
unless otherwise specified. RF conditions: Input frequency 1 MHz; 30% modulated with f
= 3 V; T
p
= 1 kHz; unless
mod
otherwise specified.
2. All parameters are measured in the application circuit (see Fig.4) at nominal supply voltage VP= 3 V; T
unless otherwise specified. RF conditions: Input frequency 100 MHz; frequency deviation ∆f = 22.5 kHz and f
kHz; unless otherwise specified.
February 1990 3
amb
amb
= 25 °C;
= 25 °C;
= 1
mod
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February 1990 4
Philips Semiconductors Product specification
AM/FM radio receiver circuit TEA5591A
Fig.1 Block diagram.
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February 1990 5
Philips Semiconductors Product specification
AM/FM radio receiver circuit TEA5591A
Fig.2 Equivalent circuit diagram.
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