TDA3866 データシートの表示（PDF） - Philips Electronics
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TDA3866 Datasheet PDF : 16 Pages
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Philips Semiconductors
Quasi-split sound processor for all standards
Preliminary specification
TDA3866
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Audio frequency performance for FM operation in B/G standard (V5 = VP) unless otherwise specified.
Measurements on AF outputs (pins 8 and 9)
Vo
dV8, 9
signals attenuation of AF signal switches
mute: AF2 on pin 8
V5 = 0
70
−
−
dB
AM mode: not required signal
AF1 on pin 9 (from FM)
5.5 MHz on pin 18;
V5 = 0; Vi = 10 mV
70
−
−
dB
FM mode: not required signal
AF1 on pin 9 (from AM)
signal for L standard
70
−
−
dB
(pins 1-2); V5 = VP
DC level deviation (pins 8 and 9)
when switching to FM −
or AM sound or Mute
5
25
mV
S/N(W)
weighted signal-to-noise ratio
on output pin 9
black picture
2T/20T pulses with white bar
6 kHz sine wave, B/W-modulated
250 kHz square wave B/W-modulated
on output pin 8
CCIR 468-3
de-emphasis 50 µs
fi = 5.5 MHz
fi = 5.5 MHz
fi = 5.5 MHz
fi = 5.5 MHz
59
63
−
dB
57
61
−
dB
52
56
−
dB
50
56
−
dB
black picture
fi = 5.742 MHz
57
61
−
dB
2T/20T pulses with white bar
fi = 5.742 MHz
55
59
−
dB
6 kHz sine wave, B/W-modulated
fi = 5.742 MHz
50
54
−
dB
250 kHz square wave B/W-modulated fi = 5.742 MHz
50
56
−
dB
RR
ripple rejection
all standards; fR = 70 Hz 30
40
−
dB
VR = 200 mV (p-p)
Notes to the characteristics
1. Crosstalk attenuation of IF input switch, measured at R12-13 = 470 Ω (instead of LC circuit);
input signal Vi (rms) = 20 mV (pins 23-24). AGC voltage V3 set to a value to achieve Vo (rms) = 20 mV (pins 12-13).
After switching (V5 = 0 V) measure attenuation.
IF coupling with OFWG3203 and OFWL9350 (Siemens).
2. Spurious intercarrier AM: m = (A-B)/A (wherein A = signal at sync; B = signal with 100% picture modulation.)
3. For larger current: RL > 2.2 kΩ (pin 8 or 9 to GND) in order to increase the bias current of the output emitter follower.
January 1992
10
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