1996 Jun 18 2
Philips Semiconductors Product specification
Front-end and PLL synthesizers for
car radios
TEA6810V; 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.
APPLICATIONS
• Car radios.
GENERAL 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 I
2
C-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).
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
CCA1
analog supply voltage (pin 2) 4.75 5.0 5.25 V
V
CCA2
analog supply voltage (pin 13) 8.1 8.5 8.9 V
V
AMant
AM AGC range see Fig.4 0.3 − 6.0 V
V
FMant
FM AGC range see Fig.5 10 − 600 mV
f
AMant
AM input frequency 0.144 − 22 MHz
f
FMant
FM input frequency 60 − 108 MHz
T
amb
operating ambient temperature −40 − +85 °C
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TEA6810V VSO40 plastic very small outline package; 40 leads SOT158-1
TEA6811V VSO40 plastic very small outline package; 40 leads; face down SOT158-2