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参数资料
| 型号： | TDA7403D |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 25/25页 |
| 文件大小： | 232K |
| 代理商： | TDA7403D |
ELECTRICAL CHARACTERISTICS (VS = 9V; deemphasis time constant = 50
s, VMPX = 500mV,
75KHz deviation, f = 1KHz. GI = 6dB, Tamb = 25°C; unless otherwise specified).
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VIN
MPX Input Level
Input Gain = 3.5dB
0.5
1.25
VRMS
Rin
Input Resistance
100
K
Gmin
Minimum Input Gain
3.5
dB
Gmax
Max Input Gain
11
dB
GSTEP
Step Resolution
2.5
dB
SVRR
Supply Voltage Ripple Rejection
Vripple = 100mv, f = 1khz
60
dB
α
Max Channel Separation
50
dB
THD
Total Harmonic Distortion
0.05
%
S
+ N
N
Signal plus Noise to Noise Ratio
S = 2Vrms
86
dB
MONO/STEREO SWITCH
VPTHST1
Pilot Threshold Voltage
for Stereo, PTH = 1
15
mV
VPTHST0
Pilot Threshold Voltage
for Stereo, PTH = 0
25
mV
VPTHMO1
Pilot Threshold Voltage
for Mono, PTH = 1
12
mV
VPTHMO0
Pilot Threshold Voltage
for Stereo, PTH = 0
19
mV
PLL
f/f
Capture Range
0.5
%
DEEMPHASIS and HIGHCUT
τHC50
Deemphasis Time Constant
Bit = 7, Subadr. 10 = 0
VLEVEL >> VHCH
50
s
τHC75
Deemphasis Time Constant
Bit = 7, Subadr. 10 = 1
VLEVEL >> VHCH
75
s
τHC50
Highcut Time Constant
Bit = 7, Subadr. 10 = 0
VLEVEL >> VHCL
150
s
τHC75
Highcut Time Constant
Bit = 7, Subadr. 10 = 1
VLEVEL >> VHCL
225
s
STEREOBLEND and HIGHCUT-CONTROL
REF5V
Internal Reference Voltage
5
V
TCREF5V
Temperature Coefficient
3300
ppm
LGmin
Min. LEVEL Gain
0
dB
LGmax
Max. LEVEL Gain
10
dB
LGstep
LEVEL Gain Step Resolution
0.67
dB
VSBLmin
Min.Voltage for Mono
33
%REF5V
VSBLmax
Max. Voltage for Mono
58
%REF5V
VSBLstep
Step Resolution
8.4
%REF5V
STEREODECODER PART
No external components necessary
PLL with adjustment free fully integrated VCO
Automatic pilot dependent MONO/STEREO
switching
Very high suppression of intermodulation and
interference
Programmable Roll-Off compensation
Dedicated RDS Softmute
Highcut and Stereoblend characterisctics pro-
grammable in a wide range
Internal Noiseblanker with threshold controls
Multipath detector with programmable inter-
nal/external influence
I
2C bus control of all necessary functions
TDA7403
9/25
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