TDA7427 datasheet(3/21 Pages) STMICROELECTRONICS

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PIN DESCRIPTION (TDA7427/D)

SYMBOL

DESCRIPTION

INPUT/OUT PUT

LP_FM

Filter OPAMP input, charge pump output (FM mode)

LP_HC

Filter OPAMP input, charge pump output (high current

mode)

LP_AM

Filter OPAMP input, charge pump output (AM mode)

VREF

OPAMP reference voltage

OSCIN

Oscillator reference clock input

OSCOUT Oscillator output

DOUT3

Open collector output

SCL

2C bus clock input

Input

SDA

2C bus data I/O

Input/output

IF_AM

IF counter input (AM mode)

Analog input

IF_FM

IF counter input (FM mode)

Analog input

SSTOP

IF counter result output

Output

13*

DOUT1

Digital output

Push-pull output

13*

INLOCK

Inlock detector output

Output

HFREF

HF reference

VDD1

Positive power supply 5V

Supply

FM_IN

High frequency input FM

Analog input

AM_IN

High frequency input AM

Analog input

GND

Analog digital ground

Supply

VDD2

Positive power supply 10V

Supply

LPOUT

Filter input, change pump output

* Pin function is userdefined by software

TDA7427

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