TDA7478 datasheet(5/11 Pages) STMICROELECTRONICS

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TDA7478

Electrical specifications

Doc 10679 Rev 4

5/11

Electrical specifications

2.1

Thermal data

2.2

Absolute maximum ratings

2.3

Electrical characteristics

Tamb = 25°C, VS = 5V, unless otherwise specified.

Table 3.

Thermal data

Symbol

Description

Value

Unit

Rth j-case

Thermal resistance junction-to-case

Max.

200

°C/W

Table 4.

Absolute maximum ratings

Symbol

Parameter

Value

Unit

Supply voltage

-0.3 to 7

Top

Operating temperature range

-40 to 85

°C

Tstg

Storage temperature

-55 to 150

°C

Table 5.

Electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Supply voltage

4.5

5.5

Supply current

7.5

12.0

Filter

Center frequency

56.6

57.4

kHz

3 dB bandwidth

2.5

3.5

kHz

Gain

f = 57 kHz

Attenuation

Δf ± 4 kHz

f = 38 kHz

f = 67 kHz

Input impedance of MPX

120

Load impedance on FILOUT

S/N

Signal to noise ratio

VIN = 3 mVRMS

VIN

MPX input signal

f = 19 kHz; T3

≤ 40 dB(1)

f = 57 kHz (RDS)

1000

mVRMS

SRDS

RDS detection sensitivity

mVrms

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