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TDA7540B 数据表(PDF) 13 Page - STMicroelectronics

部件名 TDA7540B
功能描述  AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)
PDF  75 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7540B 数据表(HTML) 13 Page - STMicroelectronics

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TDA7540B
Electrical specifications
13/75
14.17
I27,I28
Charge current high
narrow
TISS, ISSCTL = 1
-110
µA
14.18
I27,I28
Discharge current low
TISS, ISSCTL = 0
1
µA
14.19
I27,I28
Discharge current high
TISS, ISSCTL = 0
15
µA
14.20
V27,V28
Low voltage
ISSCTL = 0
0.1
V
14.21
V27,V28
High voltage
ISSCTL = 1
4.9
V
ISS Filter Switch Threshold
14.22
V27,V28
Threshold ISS on
ISSCTL = 0
3
V
14.23
V27,V28
Threshold ISS off
ISSCTL = 0
1
V
14.24
V27,V28
Threshold ISS narrow on
ISSCTL = 0
4
V
14.25
V27,V28
Threshold ISS narrow off
ISSCTL = 0
2
V
14.26
I3
Charge current low
TDEV
-25
µA
14.27
I3
Charge current high
TDEV
-39
µA
14.28
I3
Discharge current low
TDEV
1
µA
14.29
I3
Discharge current high
TDEV
15
µA
14.30
DEVWTH Internal low threshold
DWTH
30
kHz
14.31
DEVWTH Internal high threshold
DWTH
75
kHz
14.32
RATIOmin Referred to threshold
DTH
1
14.33 RATIOmax Referred to threshold
DTH
1.5
15
Softmute
15.1
VANT
Upper startpoint
SMTH, SMD, SLOPE = 0
10
dB
µV
15.2
VANT
lower startpoint
SMTH, SMD, SLOPE = 0
3
dB
µV
15.3
aSMmin
Min. softmute depth
SMD, SLOPE = 0,
SMTHUpper
18
dB
15.4
aSMmax
Max. softmute depth
SMD, SLOPE = 0,
SMTHUpper
36
dB
15.5
aSMTHISS
Mute depth threshold for
ISS filter on
SMCTH
0.2
1
2
dB
15.6
VACTH
Internal AC mute
threshold
ACM
60
340
mV
15.7
aSMAC
AC mute depth
ACMD
4
10
dB
15.8
I49
Charge current
-47.5
µA
15.9
I49
Discharge current
2.5
µA
16
S/N MPX
16.1
(S+N)/N
VANT = 60dBµV,
dev.= 40kHz,LP=15KHz
deemphasis t = 50µs
66
69
dB
Table 5.
Electrical characteristics (continued)
(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,
fRF = 98MHz, dev= 40kHz, fMOD = 1kHz, fXtal = 10.25MHz, in application circuit, unless
otherwise specified).
Item
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit



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