TDA7541 Datasheet, PDF (11/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

TDA7541
Electrical specifications and characteristics
Table 5.
Globals (continued)
(T_amb = 25°C, V_CC1 = V_CC2 = V_CCMIX1 = V_CCVCO = V_CCIF = 8.5V, f_Xtal = 10.25 MHz,
in application circuit, unless otherwise specified)
Item Symbol
Parameter
Test conditions Min. Typ. Max. Unit
1.12
1.13
I_CCMIX1
I_CCIF
Supply Current
Supply Current
2. Reference voltages
AM ON
20
24
mA
4
5
mA
2.1
V_REF1 Internal reference voltage
2.2
V_REF2 Internal reference voltage
3. I²C bus interface
I_REF1 = 0mA
I_REF2 = 0mA
4.8
5
5.2
V
2.4
2.5
2.6
V
3.1
f_SCL
Clock frequency
3.2
V_IL
Input low voltage
3.3
V_IH
Input high voltage
3
3.4
I_IN
Input current
-5
3.5
V_O
Output acknowledge voltage I_O = 1.6mA
400
kHz
1
V
V
5
µA
0.4
V
Table 6. FM section
(T_amb = 25°C, V_CC1 = V_CC2 = V_CCMIX1 = V_CCVCO = V_CCIF = 8.5V, f_Xtal = 10.25 MHz,
f_RF = 98MHz, dev = 40 kHz, f_Mod = 1 kHz, in application circuit, unless otherwise specified)
Item Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
4. Wide band RF AGC
4.1
V_8-10 Lower threshold start
4.2
V_8-10 Upper threshold start
4.3 Δ V_8-10 Control range RF KAGC
5. Narrow band IF & keying AGC
5.1
V₆₁ Lower threshold start
5.2
V₆₁ Upper threshold start
5.3
V₆₁
Max. IFAGC threshold
with KAGC
5.4
V₃₇ Start point KAGC
5.5 Δ V₆₁ Control range IF KAGC
6. AGC time constant output
V₁₃ = 2.5V,RFK “0”
V₁₃ = 2.5V,RFK”0”
KAGC”000”,RFAGC”00”,
V₃₇ = 3.0….3.7V, RFK”1”
KAGC = off, V_8-10 = 0mV_RMS
KAGC = off, V_8-10 = 0mV_RMS
KAGC”000”,IFAGC”00”,
V₃₇ = 3.0V
KAGC”000”,IFAGC”00”,
KAGC”000”,IFAGC”00”,
V₃₇ = 3.2….3.9V
6.1
V₁₃ Max. AGC output voltage V_8-10= 0mV_RMS
6.2
V₁₃ Min. AGC output voltage V_8-10 = 100mV_RMS
6.3
I₁₃ Min. AGC charge current V_8-10= 0mV_RMS,V₁₃ = 2.5V
79
dBμV
93
dBμV
5
8
11
82
dBµV
94
dBµV
97
dBµV
3.2 3.4
3.6
V
12
15
18
dB
V_REF1
+V_BE
V
0.5
V
-33 -25 -17.5 µA
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