E-TDA7478AD datasheet(4/11 Pages) STMICROELECTRONICS

Part #	E-TDA7478AD

Description	Single chip RDS demodulator

PDF	11 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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4 / 11 page

Block diagram and pins description

TDA7478

4/11

Doc 10679 Rev 4

1.2

Pins description

Figure 2.

Pin connection (top view)

Table 2.

Pins description

Pin #

Name

Description

QUAL

Output for signal quality indication (High = good)

RDDA

RDS data output

VREF

Reference voltage

MPX

RDS input signal

OSEL

Oscillator selector pin:

– open, closed to VS = quartz oscillator

– closed to GND = external driven

GND

Ground

N.U.

Not Used (to be left open)

FILOUT

Filter output

FSEL

Frequency selector pin:

– open = 4.332 MHz

– closed to VS = 8.664 MHz

Test mode pin:

– open = normal operation

– closed to VS = testmode

EXTRES

Reset pin:

– open = run mode

– closed to VS = reset condition

Supply voltage

OSCIN

Oscillator input

OSCOUT Oscillator output

T57

Testing output pin: 57 kHz clock output

RDCL

RDS clock output 1187.5 Hz

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