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TDA7512 Datasheet, PDF (11/42 Pages) STMicroelectronics – AM/FM CAR RADIO TUNER IC WITH INTELLIGENT SELECTIVITY SYSTEM ISS
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TDA7512
Table 3. ELECTRICAL CHARACTERISTICS (continued)
Tamb = +25°C, VCC1 = VCC2 = VCC3 = VCCVCO = VCCMIX1 = VCCIF1=8.5V, fRF = 98MHz, dev. = 40kHz,
fMOD = 1kHz, fIF1 = 10.7MHz, fIF2 = 450KHz, fXtal = 10.25MHz, in application circuit, unless otherwise
specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
V15 High voltage
ISSCTL = 1
4.9
V
ISS Filter Switch Threshold
V15
Threshold ISS on
ISSCTL = 0
3
V
V15
Threshold ISS off
V15
Threshold ISS narrow on
V15
Threshold ISS narrow off
I20
Charge current low
I20
Charge current high
I20
Discharge current low
I20
Discharge current high
DEVWTH Internal low threshold
DEVWTH Internal high threshold
ISSCTL = 0
ISSCTL = 0
ISSCTL = 0
TDEV
TDEV
TDEV
TDEV
DWTH
DWTH
1
V
4
V
2
V
-20
µA
-34
µA
6
µA
20
µA
30
kHz
75
kHz
RATIOmi Referred to threshold
DTH
1
n
RATIOm Referred to threshold
DTH
1.5
ax
Softmute
VANT Upper startpoint
SMTH, SMD, SLOPE = 0
VANT lower startpoint
SMTH, SMD, SLOPE = 0
aSMmin Min. softmute depth
SMD, SLOPE = 0, SMTHUpper
aSMmax Max. softmute depth
SMD, SLOPE = 0, SMTHUpper
aSMTHIS Mute depth threshold for ISS filter SMCTH
S
on
10
3
18
36
0.2
dBµV
dBµV
dB
dB
2
dB
VACTH Internal AC mute threshold
aSMAC AC mute depth
I42 Charge current
I42 Discharge current
S/N Over All
ACM
ACMD
60
340 mV
4
10
dB
-47.5
µA
2.5
µA
S/N
VANT_min = 60dBµV,
66
dB
dev.= 40kHz,LP=15KHz
deemphasis t = 50µs
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