參數(shù)資料
型號(hào)： TDA7410NDTR
廠商： 意法半導(dǎo)體
英文描述： Signal processor for car radio applications
中文描述： 信號(hào)處理器汽車無線電應(yīng)用
文件頁數(shù)： 14/34頁
文件大小： 338K
代理商： TDA7410NDTR
Description of the audioprocessor part
TDA7410ND
14/34
5.7
Speaker Attenuator
Due to practical aspects the steps in the speaker attenuators are not linear over the full
range. At attenuations more than 24dB the steps increase from 2dB to 8dB (please see data
byte specification).
5.8
Stereodecoder part
●
No External components necessary
PLL with adjustment fully integrated VCO
Automatic pilot dependent MONO/STEREO switching
Very high suppression of intermodulation and interference
Highcut and Stereoblend characteristics programmable in a wide range
Internal noiseblanker with threshold controls
I
2
C bus control of all necessary functions
●
●
●
●
●
●
Stereodecoder electrical characteristics
V
DD
= 8.5V, Deemphasis time const = 50μs, V
MPX
= 500mV, In Gain = 6dB, 75kHz
deviation, f = 1kHz, T
amb
=25°C, unless otherwise spificied
Parameter
Test Condition
Table 6.
Symbol
Min.
Typ.
Max.
Unit
V
IN
Rin
MPX input level
Input gain = 3.5dB
0.5
V
RMS
k
Ω
Input resistance
100
Gain
Minimum input gain
3.5
dB
Gmax
Maximum input gain
11
dB
G
STEP
a
Step resolution
2.5
dB
Max. channel separation
40
dB
Mono/stereo switch
V
PTHST1
V
PTHST0
V
PTHMO1
V
PTHMO0
Pilot threshold voltage
For stereo, PTH=1
10
15
25
mV
For stereo, PTH=0
15
25
35
mV
For mono, PTH=1
7
12
17
mV
For mono, PTH=0
10
19
25
mV
PLL
Δ
f/f
Capture Range
0.5
%
Deemphass and highcut
τ
HC50
Deemphasis time constant
Stereodecoder-Byte
D5=0 V
LEVEL
>> V
HCH
Stereodecoder-Byte
D5=1 V
LEVEL
>> V
HCH
Stereodecoder-Byte
D5=0 V
LEVEL
>> V
HCH
Stereodecoder-Byte
D5=1 V
LEVEL
>> V
HCH
50
μ
s
τ
HC75
75
μ
s
τ
HC50
Highcut time constant
150
μ
s
τ
HC75
225
μ
s
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