TEA6811V

Features:

· Synthesizer function which includes a Voltage Controlled Oscillator (VCO), dividers, phase detector, charge-pump and in-lock detector
· FM mixer with AGC
· AM RF amplifier with AGC
· AM mixer.


Application

· Car radios.


Pinout

Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
VCCA1	analog supply voltage (pin 2)		-0.3	12	V
VCCA2	analog supply voltage (pin 13)		-0.3	12	V
VCCD	digital supply voltage (pin 9)		-0.3	12	V
VCCOSC	oscillator supply voltage (pin 38)		-0.3	12	V
Ptot	maximum power dissipation		-	0.55	W
Tstg	storage temperature		-65	+150
Ves	electrostatic handling	note 1	-300	+300	V

Description

The TEA6810V and TEA6811V, together with TEA6821V forms an AM/FM receiving concept for electronically tuned car radios.
The TEA681xV is an FM/AM front-end with one local synthesized oscillator for both AM and FM which is used together with the TEA6821T in a double-conversion concept. It delivers a first FM-IF of 72.2 MHz and, for MW/LW, a first AM-IF of 10.7 MHz.

Minimum alignments are required due to wideband RF inputs and the common AM/FM VCO.

High dynamic behaviour and minimum distortion is obtained by a special RF input design combined with AGC. High sensitivity is possible in combination with RF input FETs.

Minimum interference is experienced due a to special synthesizer loop design and ensuring that the I2C-bus is inoperative in the locked-tuned condition.

The reference frequency for the synthesizer and the I2C-bus information is delivered by the TEA6821V.

The programmable local/dx switch enables switching the gain of the FM mixer from normal AGC control (FM dx) to the forced 4th level of AGC (FM local).