TEA6850 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TEA6850 Datasheet PDF : 20 Pages
| |||
Philips Semiconductors
IF filter / amplifier / demodulator for FM
radio receivers
Preliminary specification
TEA6850
SYMBOL
PARAMETER
Reference voltage source
V9
voltage at pin 9
V10
voltage at pin 10
V11
voltage at pin 11
TK
temperature coefficient of V10 and V11
MIN.
TYP.
MAX. UNIT
2.4
2.55
2.7
V
2.95
3.25
3.55
V
0.98
1.08
1.2
V
−
3.3
−
10−3/K
AC CHARACTERISTICS
VP = 8.5 V; Tamb = +25 °C; f = 10.7 MHz with fm = 1 kHz, ±22.5 kHz deviaton (∆f = ±22.5 kHz); EMF = 30 mV RMS;
50 µs de-emphasis; filter bandwidth = 50 kHz overall; −6 dB gain from EMF to IF filter output (pins 21 and 22); in noise
frequency band for S/N measurements 300 Hz to 15 kHz; S/N stereo measurement with ideal decoder; measurements
taken in Fig.4 unless otherwise specified.
SYMBOL
DS100
DS200
S/N
PARAMETER
dynamic selectivity for 100 kHz
distance
dynamic selectivity for 200 kHz
distance
signal-to-noise ratio
EMF
IF signal
EMF
THD
input voltage for start of limiting
(RMS value)
total harmonic distortion
D57
attenuation of third harmonic
measured at pin 4
EMF
A14-21,22
∆ADC
VO
∆VO
admissible maximum input voltage
(RMS value)
gain to IF filter output (adjustable)
downconverter adjustable range
MPX output voltage (RMS value)
MPX output voltage ripple
CONDITIONS
EMF = 700 µV
EMF = 14 mV
EMF = 700 µV
EMF = 14 mV
mono
stereo
S/N = 26 dB; V5 = 5 V
S/N = 46 dB; V5 = 5 V
−3 db at MPX output;
V5 = 5V
∆f = 75 kHz
∆f = 100 kHz
fm = 8 kHz; ∆f = 75 kHz
fm = 19 kHz; ∆f = 6.75 kHz;
measured at 57 kHz
compared to 57 kHz
∆f = 2 kHz
MIN. TYP. MAX. UNIT
13 16 −
dB
10 12 −
dB
22 27 −
dB
18 22 −
dB
61 67 −
dB
54 57 −
dB
−
20 45 µV
−
130 370 µV
−
10 20 µV
−
0.3 0.5 %
−
0.5 1
%
−
3
5
%
14 20 −
dB
300 −
−
mV
1 kHz < fmod < 15 kHz
23 kHz < fmod < 53 kHz
−
−6 −
dB
−10 −
+6 dB
180 200 220 mV
−
−
±2 dB
−
−
±2 dB
July 1994
9
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