TDA7512 Datasheet, PDF (10/42 Pages) STMicroelectronics – AM/FM CAR RADIO TUNER IC WITH INTELLIGENT SELECTIVITY SYSTEM ISS

TDA7512
Table 3. ELECTRICAL CHARACTERISTICS (continued)
T_amb = +25°C, V_CC1 = V_CC2 = V_CC3 = V_CCVCO = V_CCMIX1 = V_CCIF1=8.5V, f_RF = 98MHz, dev. = 40kHz,
f_MOD = 1kHz, f_IF1 = 10.7MHz, f_IF2 = 450KHz, f_Xtal = 10.25MHz, in application circuit, unless otherwise
specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
ISS (intelligent Selectivity System)
Filter 450kHz
f_centre Centre frequency
BW 3dB Bandwidth, -3dB
f_{REF_intern} = 450kHz
ISS80 = 1
450
kHz
80
kHz
BW Bandwidth, -20dB
20dB
ISS80 = 1
150
kHz
BW 3dB Bandwidth, -3dB
ISS80 = 0
120
kHz
BW Bandwidth, -20dB
20dB
ISS80 = 0
250
kHz
BW 3dB Bandwidth weather band
ISS30 = 1
30
kHz
BW -20dB weather band
20dB
ISS30 = 1
80
kHz
Adjacent Channel ISS Filter Threshold
V_NTH Internal low threshold
V_NTH Internal high threshold
V_WTH Internal low threshold
V_WTH Internal high threshold
Multipath Threshold
ACNTH
ACNTH
ACWTH
ACWTH
0
V
0.3
V
0.25
V
0.95
V
V_THMP Internal low threshold
V_THMP Internal high threshold
ISS Filter Time Constant
MPTH
MPTH
0.50
V
1.25
V
I₁₅ Charge current low mid
I₁₅ Charge current high mid
I₁₅ Charge current low narrow
I₁₅ Charge current high narrow
I₁₅ Discharge current low
I₁₅ Discharge current high
V₁₅ Low voltage
TISS, ISSCTL = 1
TISS, ISSCTL = 1
TISS, ISSCTL = 1
TISS, ISSCTL = 1
TISS, ISSCTL = 0
TISS, ISSCTL = 0
ISSCTL = 0
-74
µA
-60
µA
-124
µA
-110
µA
1
µA
15
µA
0.1
V
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