參數(shù)資料
型號: TDA7405TR
廠商: STMICROELECTRONICS
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝: 10 X 10 MM, ROHS COMPLIANT, TQFP-44
文件頁數(shù): 16/58頁
文件大?。?/td> 762K
代理商: TDA7405TR
23/57
TDA7405
6
STEREODECODER-PART
6.1 Features:
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 programmable in a wide range
FM/AMNoiseblanker with several threshold controls
Multipath-detector with programmable internal/external influence
I2C-bus control of all necessary functions
Table 7. ELECTRICAL CHARACTERISTICS
VS = 9V, deemphasis time constant = 50s, MPX input voltage VMPX = 500mV (75kHz deviation),
modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vin
MPX Input Level
Input Gain = 3.5dB
0.5
1.25
Vrms
Rin
Input Resistance
70
100
130
k
Gmin
Min. Input Gain
1.5
3.5
4.5
dB
Gmax
Max. Input Gain
8.5
11
12.5
dB
Gstep
Step Resolution
1.75
2.5
3.25
dB
SVRR
Supply Voltage Ripple Rejection
Vripple = 100mV, f = 1kHz
55
dB
α
Max. Channel Separation
30
50
dB
THD
Total Harmonic Distortion
fin=1kHz, mono
0.02
0.3
%
Signal plus Noise to Noise Ratio
A-weighted, S = 2Vrms
80
91
dB
MONO/STEREO-SWITCH
VPTHST1 Pilot Threshold Voltage
for Stereo, PTH = 1
10
15
25
mV
VPTHST0 Pilot Threshold Voltage
for Stereo, PTH = 0
15
25
35
mV
VPTHMO1 Pilot Threshold Voltage
for Mono, PTH = 1
7
12
17
mV
VPTHMO0 Pilot Threshold Voltage
for Mono, PTH = 0
10
19
25
mV
PLL
f/f
Capture Range
0.5
%
DEEMPHASIS and HIGHCUT
SN
+
N
--------------
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