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參數(shù)資料
| 型號： | TDA9851T-T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 118K |
| 代理商： | TDA9851T-T |
1997 Nov 12
8
Philips Semiconductors
Product specication
I2C-bus controlled economic BTSC stereo
decoder
TDA9851
Outputs OUTL and OUTR
Zo
output impedance
80
120
VO
DC output voltage
0.45VCC 0.5VCC
0.55VCC V
RL
output load resistance
(AC-coupled)
5
k
CL
output load capacitance
2.5
nF
α
ct
crosstalk SAP into L and R
100% modulation;
fmod = 1 kHz; SAP;
mode selector switched to
stereo
50
70
dB
VCA
Is
nominal timing current for
nominal release rate of VCA
detector
Is can be measured at pin TW
via current meter connected to
0.5VCC +1V
6.5
8
9.5
A
Relrate
nominal detector release rate
nominal timing current and
external capacitor values
125
dB/s
Automatic volume level control
Gv
voltage gain
maximum boost; note 2
5
6
7
dB
maximum attenuation; note 2
14
15
16
dB
Gstep
equivalent step width between
the input stages (soft switching
system)
1.5
dB
Viop(rms)
input voltage (RMS value)
maximum boost; note 2
0.1
V
maximum attenuation; note 2
1.125
V
Vo(rms)
output voltage in AVL
operation (RMS value)
160
200
250
mV
Voffset(DC)
DC offset voltage between
different gain steps
voltage at pin CAV
7.0 to 6.83 V or
6.83 to 6.61 V or
6.61 to 5.83 V or
5.83 to 3.1 V; note 3
20
mV
Ratt
discharge resistors for attack
time constant
AT1 = 0; AT2 = 0; note 4
340
420
520
AT1 = 1; AT2 = 0; note 4
590
730
910
AT1 = 0; AT2 = 1; note 4
0.96
1.2
1.5
k
AT1 = 1; AT2 = 1; note 4
1.7
2.1
2.6
k
Idec
charge current for decay time
normal mode; CCD = 0; note 5 1.6
2.0
2.4
A
power-on speed-up; CCD = 1;
note 5
30
A
Muting at power supply voltage drop for OUTR and OUTL
V
CC
supply voltage drop for mute
active
VCAP 0.7
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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