TDA7478 Electrical specifications
Doc 10679 Rev 3 5/11
2 Electrical specifications
2.1 Thermal data
2.2 Absolute maximum ratings
2.3 Electrical characteristics
T
amb
= 25°C, V
S
= 5V, unless otherwise specified.
Table 3. Thermal data
Symbol Description Value Unit
R
th j-case
Thermal resistance junction-to-case Max. 200 °C/W
Table 4. Absolute maximum ratings
Symbol Parameter Value Unit
V
S
Supply voltage -0.3 to 7 V
T
op
Operating temperature range -40 to 85 °C
T
stg
Storage temperature -55 to 150 °C
Table 5. Electrical characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
V
S
Supply voltage - 4.5 5 5.5 V
I
S
Supply current - - 7.5 12.0 mA
Filter
f
C
Center frequency - 56.6 57 57.4 kHz
BW 3 dB bandwidth - 2.5 3 3.5 kHz
G Gain f = 57 kHz 17 20 23 dB
A Attenuation
Δf ± 4 kHz - 22 - dB
f = 38 kHz - 60 - dB
f = 67 kHz - 45 - dB
R
I
Input impedance of MPX - - 120 - KΩ
R
L
Load impedance on FILOUT - 1 - - MΩ
S/N Signal to noise ratio V
IN
= 3 mVRMS 30 40 - dB
V
IN
MPX input signal
f = 19 kHz; T3 ≤ 40 dB
(1)
f = 57 kHz (RDS)
--
1000
50
mV
RMS
mV
RMS
S
RDS
RDS detection sensitivity - 1 - - mVrms
