ATR4289-TBQY

ATR4289-TBQY Datasheet


The ATR4289 is an integrated circuit in BiCMOS technology for frequency synthesizers. It performs all the functions of a PLL radio tuning system and is controlled by a 2-wire bus. The device is designed for all frequency synthesizer applications in radio receivers, as well as for radio data system RDS applications.

Part Datasheet
ATR4289-TBQY ATR4289-TBQY ATR4289-TBQY (pdf)
Related Parts Information
ATR4289-TBSY ATR4289-TBSY ATR4289-TBSY
PDF Datasheet Preview
• Reference Oscillator up to 15 MHz
• Two Programmable 16-bit Dividers Adjustable from 2 to 65535
• Fine Tuning Steps

AM 1 kHz FM 2 kHz
• Loop-push-pull Stage for AM/FM
• High Signal/Noise Ratio

AM/FM PLL with 1 Switch

The ATR4289 is an integrated circuit in BiCMOS technology for frequency synthesizers. It performs all the functions of a PLL radio tuning system and is controlled by a 2-wire bus. The device is designed for all frequency synthesizer applications in radio receivers, as well as for radio data system RDS applications.

Figure Block Diagram

OSCIN 14

OSCOUT 15

SCL 2 SDA 3

Oscillator

I2C bus interface

FMOSC 6
8 AMOSC

AM/FM switch
7 GND2

R divider

Switching output

Phase detector

N divider
1 VDD
16 GND1

Current sources
5 SWO1
11 PDAM 12 PDAMO 13
9 PDFMO 10

PDFM

ATR4289

Pin Configuration

Figure Pinning SO16

VDD 1 SCL 2 SDA 3

AS 4 SWO1 5 FMOSC 6 GND 2 7 AMOSC 8

Table Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Pin Description

Symbol Function

Supply voltage

Bus clock

Bus data

Address selection

SWO1 Switching output

FMOSC FM oscillator input

GND2 Ground 2 analog

AMOSC AM oscillator input
Ordering Information

Extended Type Number ATR4289-TBSY ATR4289-TBQY

Package Information

Package SO16 plastic SO16 plastic

Remarks Pb-free Taping according to IEC-286-3, Pb-free

Package SO16

Dimensions in mm
technical drawings according to DIN specifications

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Datasheet ID: ATR4289-TBQY 519311