TDA3858 查看數據表（PDF） - Philips Electronics
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TDA3858 Datasheet PDF : 17 Pages
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Philips Semiconductors
Quasi-split sound processor for all standards
Product specification
TDA3858
CHARACTERISTICS
VP = 5 V (pin 27) and Tamb = +25 °C; measurements taken in Fig.3 with fVC = 38.9 MHz, fSC1 = 33.4 MHz and
fSC2 = 33.158 MHz. Vision carrier (VC) modulated with different video signals, modulation depth 100% (proportional to
10% residual carrier).
Vision carrier amplitude (RMS value) Vi VC = 10 mV; vision to sound carrier ratios are VC/SC1 = 13 dB and
VC/SC2 = 20 dB. Sound carriers (SC1, SC2) modulated with f = 1 kHz and deviation ∆f = 50 kHz, unless otherwise
specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX. UNIT
VP1
supply voltage (pin 27)
VP2
supply voltage (pin 28)
IP1
supply current (pin 27)
IF source control (pin 6)
pin 28 not
connected
pin 27 not
connected
VP1 = 5 V
4.5
5
8.8
V
10.8
12
13.2
V
48
60
72
mA
V6
input voltage in order to obtain
standards
B/G (FM) with automatic muting pin 6 connected
2.8
pin 6 open-circuit −
B/G (FM) without muting
pin 6 connected or 1.3
alternative
measure: 22 kΩ to
GND
L(AM sound)
pin 6 connected
0
I6
V6(12 V)
input current
maximum input voltage (pin 6)
V6 = VP1
−
V6 = 0 V
−
supply at pin 28
−
IF input not activated (pins 1-2 or 31-32)
RI
VI
α16-17
input resistance
−
DC input voltage (pins 1, 2 or 31, 32) LOW set internally −
crosstalk attenuation of IF input
note 1
50
switch
−
VP1
V
2.8
−
V
−
2.3
V
−
0.8
V
−
100
µA
−
−300 µA
−
5.5
V
−
100
Ω
−
0.1
V
56
−
dB
IF amplifier (pins 1-2 or 31-32)
RI
input resistance
1.8
CI
input capacitance
−
VI
DC potential, voltage (pins 1, 2, 31,
−
32)
Vi IF (RMS)
maximum input signal (RMS value) Vo = +1 dB
70
input signal sensitivity B/G standard −3 dB intercarrier −
(RMS value, pins 31-32)
signal reduction at
pin 23
input signal sensitivity L standard
(RMS value, pin 1-2)
−3 dB intercarrier −
signal reduction at
pin 11
2.2
−
kΩ
2.0
2.6
pF
1.75
−
V
100
−
mV
70
100
µV
70
100
µV
June 1994
7
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