TDA3867 Ver la hoja de datos (PDF) - Philips Electronics
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TDA3867 Datasheet PDF : 14 Pages
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Philips Semiconductors
Quasi-split sound processor with two FM demodulators
Preliminary specification
TDA3867T
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Limiting amplifiers (pins 18 and 22)
Vi
R18, 22
V18, 22
Vi
∆Vi
minimum input signal (RMS value)
maximum input signal (RMS value)
input resistance
DC voltage
level detector threshold for no muting
(RMS value, pin 22)
hysteresis of level detector
−3 dB AF signal
−
200
−
−
only 5.74 MHz channel −
−
300 450 µV
−
−
mV
560 −
Ω
0
−
V
1
−
mV
5
−
dB
Tracking automatic frequency control (AFC) of the vision carrier reference circuit.
Vo
tracking output voltage range (pin 16) note 5
FTR
tracking reducing factor for
black picture
white test picture
50 % grey picture
S
AFC steepness (open loop) for
black picture
white test picture
50 % grey picture
VP1−3.3 −
VP1−1 V
−
9
−
−
4
−
−
6
−
−
−8
−
mV/kHz
−
−3
−
mV/kHz
−
−5.5 −
mV/kHz
FM1 and FM2 demodulators
Measurements with FM IF input signals of 5.5 MHz and 5.74 MHz with Vi IF (rms) = 10 mV (fmod = 1 kHz, deviation
∆f = ± 50 kHz) on pins 18 and 22 without ceramic filters, RS = 50 Ω.
De-emphasis of 50 µs and V5 = VP (B/G standard). QL−factor = 11 for resonant circuits at pins 7-8 and 11-12.
VIC
intercarrier signals
(RMS values, pins 7-8 and 11-12)
−
100 −
mV
VDC
DC voltage (pins 7, 8, 11 and 12)
−
1.8 −
V
Vo
AF output signals
(RMS values, pins 9 and 10)
0.75 0.95 1.20 V
∆Vo
difference of AF signals
pin 6 open-circuit;
−
−
1
dB
between channels (pins 9 and 10)
note 2
R9, 10
V9, 10
output resistance
DC voltage
−
100 −
Ω
−
2.1 −
V
I9, 10
allowed AC current of emitter output
note 3
(peak value)
−
−
±1.5 mA
maximum allowed DC output current
−
−
−2
mA
THD
total harmonic distortion
−
0.5 1.0 %
Vo
AF output signal (RMS value)
THD = 1.5 %
1.25
−
−
V
αAM
S/N(W)
AM suppression
weighted signal-to-noise ratio
1 kHz, m = 0.3
CCIR 468-3
48
54
−
dB
64
68
−
dB
B
AF bandwidth
−3 dB
0.02
−
100 kHz
αCR
crosstalk attenuation (pins 9-10)
V6
adjusting voltage for AF2 signal (pin 6) note 4
60
70
−
dB
0
−
5
V
January 1992
8
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