Electrical specifications

TDA7478

6/11

Doc 10679 Rev 4

SARI

ARI detection sensitivity

-

3

-

-

mVrms

VREF

Reference

-

-

VS/2

-

V

Demodulator

Input pins (EXTRES, FSEL, TM)

all with internal pull down resistor

Input pin (OSEL)

with internal pull up resistor

IPD

Input current

VIN = 5 V (pull-down input)

15

-

30

μA

IPU

Input current

VIN = 0 V (pull-up input)

-25

-

-10

μA

VIH

Input voltage high

-

0.7 · VS 0.8 · VS

-V

VIL

Input voltage low

-

-

0.2 · VS 0.3 · VS

V

Output pins (RDCL, RDDA, QUAL, T57)

VOH

Output voltage high

IL = 0.5 mA

4

4.6

-

V

VOL

Output voltage low

IL = 0.5 mA

-

0.4

1

V

Oscillator

VCLL

Input level OSCIN pin

OSEL = open circuit

-

-

1

V

VCLH

Input level OSCIN pin

OSEL = open circuit

4

-

-

V

Amplitude OSCOUT

OSEL = open circuit

-

4.5

-

V

VPP

Amplitude OSCIN

(for external drive)

OSEL = GND, f = 4.332 MHz

OSEL = GND, f = 8.664 MHz

-

100

120

-

mVpp

mVpp

1.

The 3rd harmonic (57 kHz) must be less than -40 dB with respect to the input signal plus gain.

Table 5.

Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit