參數(shù)資料
型號: TDA7461ND
廠商: STMICROELECTRONICS
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝: SOP-28
文件頁數(shù): 13/48頁
文件大?。?/td> 437K
代理商: TDA7461ND
Stereo decoder part
TDA7461
4
Stereo decoder part
4.1
Stereo decoder feature
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
High cut and stereo blend characteristics programmable in a wide range
Internal Noise blanker with threshold controls
Multipath detector with programmable internal/external influence
I2C bus control of all necessary functions
4.2
Stereo decoder electrical characteristics
.
Table 8.
Stereo decoder electrical characteristics
(VS = 9 V; de-emphasis time constant = 50 μs, VMPX = 500 mV, 75 kHz deviation, f = 1 kHz.
GI = 6 dB, Tamb = 25 °C; unless otherwise specified)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VIN
MPX input level
Input gain = 3.5 dB
0.5
1.25
VRMS
Rin
Input resistance
70
100
130
K
Ω
Gmin
Minimum 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 = 100 mV, f = 1 kHz
55
dB
a
Max channel separation
30
50
dB
THD
Total harmonic distortion
0.02
0.3
%
Signal plus noise to noise ratio
S = 2 Vrms
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 Stereo, PTH = 0
10
19
25
mV
PLL
Δf/f
Capture range
0.5
%
SN
+
N
--------------
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