TEA6821T Philips Semiconductors, TEA6821T Datasheet - Page 2

• Manufacturer Part Number: TEA6821T
• Description: ICE car radio
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
General
QUICK REFERENCE DATA
Note to the quick reference data
1. IC is functional, specified parameters may deviate from limits which are valid for operating range.
September 1993
V
V
I
I
V
V
I
I
S N/N
THD
S N/N
THD
T
SYMBOL
s1
s1
s2
s2
FM mixer for conversion from FM IF
IF
AM mixer for conversion from AM IF
IF
FM IF gain stage
Crystal oscillator providing mixer frequencies and
references for IF count and stereo decoder
FM quadrature demodulator with automatic centre
frequency adjust and THD compensation
Level and multipath and noise detectors
Soft mute
Stereo noise cancelling and variable de-emphasis
PLL stereo decoder
Noise blanker
AM IF amplifier and demodulator
I
IF count for AM and FM
Reference frequency generation for PLL synthesizer
Reduced external components
SW applicable.
amb
s1
s1
s2
s2
ICE car radio
2
C-bus transceiver
2
2
= 10.7 MHz
= 450 kHz
supply voltage 1 (pins 56 and 28)
operating range
supply current 1 FM
supply current 1 AM
supply voltage 2 (pin 5)
operating range
supply current 2 FM
supply current 2 AM
signal-to-noise AM
distortion AM
signal-to-noise FM
distortion FM
channel separation (adjusted)
operating ambient temperature
PARAMETER
1
1
= 72.2 MHz to FM
= 10.7 MHz to AM
note 1
note 1
m = 0.3
f = 22.5 kHz at pins 43 and 47 66
f = 75 kHz
2
CONDITIONS
Stereo decoder
GENERAL DESCRIPTION
The TEA6821T together with the TEA6810T / TEA6811T
forms an AM/FM electronic tuned car radio in a double
conversion receiver concept for European, American and
Japanese frequency range.
Adjustment-free PLL-VCO
Pilot depending mono/stereo switching
Analog control of mono/stereo blend
Adjacent channel noise suppression (114 kHz)
Pilot canceller
Analog control of de-emphasis
Integrated low-pass filters for 190 kHz adjacent channel
interferences and signal delay for interference
absorption circuit.
7
8.1
4.5
4.75
40
MIN.
40
Preliminary specification
72
8.5
8.5
28
24
5.0
5.0
31
28
57
1
0.1
TYP.
TEA6821T
10
8.9
5.5
5.25
2
0.35
+85
MAX.
V
V
mA
mA
V
V
mA
mA
dB
%
dB
%
dB
UNIT
C