TDA9851 データシートの表示（PDF） - Philips Electronics
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TDA9851 Datasheet PDF : 20 Pages
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Philips Semiconductors
I2C-bus controlled economic BTSC stereo
decoder
Product specification
TDA9851
CHARACTERISTICS
All voltages are measured relative to GND; VCC = 9 V; Rs = 600 Ω; AC-coupled; RL = 10 kΩ; CL = 2.5 nF; fmod = 1 kHz
mono signal; composite input voltage 250 mV (RMS) for 100% modulation L + R (25 kHz deviation); Tamb = 25 °C;
see Fig.1; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
Supply
VCC
supply voltage
ICC
supply current
8
9
−
30
Input stage
Vi(max)(rms) maximum input voltage
(RMS value)
2
−
Zi
input impedance
20
25
Stereo decoder
HR
headroom for L + R, L and R fmod = 300 Hz; THD < 15%
9
−
Vpil(rms)
nominal stereo pilot voltage
(RMS value)
−
50
Vth(on)(rms) pilot threshold voltage
stereo on (RMS value)
−
−
Vth(off)(rms) pilot threshold voltage
stereo off (RMS value)
15
−
hys
hysteresis
−
2.5
Vo(rms)
output voltage (RMS value) 100% modulation L + R;
−
500
fmod = 300 Hz
αcsL,R
stereo channel separation
14% modulation; fL = 300 Hz; −
20
L and R
fR = 3 kHz
THDL,R
total harmonic distortion
100% modulation L or R;
−
0.2
L and R
fmod = 1 kHz
S/N
signal-to-noise ratio
mono mode; referenced to
500 mV output signal
CCIR 468-2 weighted;
50
60
quasi peak
DIN noise weighting filter −
73
(RMS value)
9.5
V
40
mA
−
V
30
kΩ
−
dB
−
mV
35
mV
−
mV
−
dB
−
mV
−
dB
1.0
%
−
dB
−
dBA
Stereo decoder, oscillator (VCXO); note 1
fo
nominal VCXO output
with nominal ceramic
frequency (32fH)
resonator
∆ffr
spread of free-running
with nominal ceramic
frequency
resonator
∆fcr
capture range frequency
nominal pilot
−
503.5
500.0 −
±190 ±265
−
kHz
507.0 kHz
−
Hz
1997 Nov 12
7
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