TDA7540B Datasheet, PDF (13/75 Pages) STMicroelectronics – AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

TDA7540B
Electrical specifications
Table 5.
Electrical characteristics (continued)
(T_amb = 25°C, V_CC1 = V_CC2 = V_CC3 = V_CCST= V_CCVCO = V_CCMIX1 = V_CCMIX2 = V_CCIF1 = 8.5V,
f_RF = 98MHz, dev= 40kHz, f_MOD = 1kHz, f_Xtal = 10.25MHz, in application circuit, unless
otherwise specified).
Item Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
14.17
I₂₇,I₂₈
Charge current high
narrow
14.18
14.19
14.20
14.21
I₂₇,I₂₈
I₂₇,I₂₈
V₂₇,V₂₈
V₂₇,V₂₈
Discharge current low
Discharge current high
Low voltage
High voltage
ISS Filter Switch Threshold
TISS, ISSCTL = 1
TISS, ISSCTL = 0
TISS, ISSCTL = 0
ISSCTL = 0
ISSCTL = 1
-110
µA
1
µA
15
µA
0.1
V
4.9
V
14.22
14.23
14.24
14.25
14.26
14.27
14.28
14.29
14.30
14.31
14.32
14.33
V₂₇,V₂₈
V₂₇,V₂₈
V₂₇,V₂₈
V₂₇,V₂₈
I₃
I₃
I₃
I₃
DEV_WTH
DEV_WTH
RATIO_min
RATIO_max
Threshold ISS on
Threshold ISS off
Threshold ISS narrow on
Threshold ISS narrow off
Charge current low
Charge current high
Discharge current low
Discharge current high
Internal low threshold
Internal high threshold
Referred to threshold
Referred to threshold
15 Softmute
ISSCTL = 0
ISSCTL = 0
ISSCTL = 0
ISSCTL = 0
TDEV
TDEV
TDEV
TDEV
DWTH
DWTH
DTH
DTH
3
V
1
V
4
V
2
V
-25
µA
-39
µA
1
µA
15
µA
30
kHz
75
kHz
1
1.5
15.1
15.2
15.3
V_ANT
V_ANT
Upper startpoint
lower startpoint
a_SMmin Min. softmute depth
15.4 a_SMmax Max. softmute depth
15.5
a_SMTHISS
Mute depth threshold for
ISS filter on
15.6
V_ACTH
Internal AC mute
threshold
15.7
15.8
15.9
a_SMAC
I₄₉
I₄₉
AC mute depth
Charge current
Discharge current
16 S/N MPX
SMTH, SMD, SLOPE = 0
SMTH, SMD, SLOPE = 0
SMD, SLOPE = 0,
SMTH_Upper
SMD, SLOPE = 0,
SMTH_Upper
SMCTH
ACM
ACMD
10
dBµV
3
dBµV
18
dB
36
dB
0.2
1
2
dB
60
340 mV
4
10
dB
-47.5
µA
2.5
µA
16.1 (S+N)/N
V_ANT = 60dBµV,
dev.= 40kHz,LP=15KHz
66
69
dB
deemphasis t = 50µs
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