TEA5591A

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


Pinout




Specifications

PARAMETER	SYMBOL	MIN.	MAX.	UNIT
supply voltage(pin 8)	VP	-	18	V
LED current (pin 7)	I7	-	tbf	mA
Total power dissipation	Ptot	see Fig.4
storage temperature	Tstg	-65	+150	°C
operating ambient temperature	Tamb	-15	+60	°C
Electrostatic handling	Ves	-1000	+1000	V

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