參數(shù)資料
型號(hào)： TDA9851T-T
廠(chǎng)商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO24
文件頁(yè)數(shù)： 18/20頁(yè)
文件大?。?/td> 118K
代理商： TDA9851T-T
1997 Nov 12
7
Philips Semiconductors
Product specication
I2C-bus controlled economic BTSC stereo
decoder
TDA9851
CHARACTERISTICS
All voltages are measured relative to GND; VCC =9V; Rs = 600 ; AC-coupled; RL =10k; 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 specied.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
VCC
supply voltage
8
9
9.5
V
ICC
supply current
30
40
mA
Input stage
Vi(max)(rms)
maximum input voltage
(RMS value)
2
V
Zi
input impedance
20
25
30
k
Stereo decoder
HR
headroom for L + R, L and R
fmod = 300 Hz; THD < 15%
9
dB
Vpil(rms)
nominal stereo pilot voltage
(RMS value)
50
mV
Vth(on)(rms)
pilot threshold voltage
stereo on (RMS value)
35
mV
Vth(off)(rms)
pilot threshold voltage
stereo off (RMS value)
15
mV
hys
hysteresis
2.5
dB
Vo(rms)
output voltage (RMS value)
100% modulation L + R;
fmod = 300 Hz
500
mV
αcsL,R
stereo channel separation
L and R
14% modulation; fL = 300 Hz;
fR = 3 kHz
20
dB
THDL,R
total harmonic distortion
L and R
100% modulation L or R;
fmod = 1 kHz
0.2
1.0
%
S/N
signal-to-noise ratio
mono mode; referenced to
500 mV output signal
CCIR 468-2 weighted;
quasi peak
50
60
dB
DIN noise weighting filter
(RMS value)
73
dBA
Stereo decoder, oscillator (VCXO); note 1
fo
nominal VCXO output
frequency (32fH)
with nominal ceramic
resonator
503.5
kHz
f
fr
spread of free-running
frequency
with nominal ceramic
resonator
500.0
507.0
kHz
fcr
capture range frequency
nominal pilot
±190
±265
Hz
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