Philips Semiconductors
IF filter / amplifier / demodulator for FM
radio receivers
Preliminary specification
TEA6850
FEATURES
• Improved dynamic selectivity and sensitivity because of
tunable IF filter
• Fully integrated, frequency matched FM demodulator
• High linearity
• Unweighted level detector output
• Soft mute
• MPX output for RDS and diversity
• Internal source selector.
GENERAL DESCRIPTION
The TEA6850 is a monolithic bipolar integrated circuit for
IF filtering, FM demodulation and level detection. Using IF
filters tuned by the demodulated signal, dynamic
selectivity and sensitivity are improved.
QUICK REFERENCE DATA
SYMBOL
VP
IP
DS200
S/N
THD
VO
Tamb
PARAMETER
supply voltage (pin 7)
supply current (pin 7)
dynamic selectivity for 200 kHz
distance (EMF = 700 µV;
filter bandwidth = 50 kHz)
signal-to-noise ratio
(∆f = ±22.5 kHz; fm = 1 kHz)
total harmonic distortion
(∆f = ±75 kHz; fm = 1 kHz)
AF output signal at pin 4
(RMS value)
operating ambient temperature
MIN.
7
14
22
TYP.
8.5
17.5
27
MAX.
10
21
−
UNIT
V
mA
dB
61
67
−
dB
−
0.3
0.5
%
180 200 220 mV
−40
−
+85 °C
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
TEA6850H
PINS
44
Note
1. SOT307-2; 1996 August 26.
PACKAGE
PIN POSITION
QFP
MATERIAL
plastic
CODE
SOT307(1)
July 1994
2