Datasheet > U4286BM-BFPG3

U4286BM-BFPG3

更新时间： 2022-11-26 02:55:15

品牌	Logo	应用领域
TEMIC		/
页数	文件大小	规格书
9页	115K
描述
AM / FM-PLL

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U4286BM-BFPG3 数据手册

U4286BM

TELEFUNKEN Semiconductors

AM / FM-PLL

Description

The U4286BM is an integrated circuit in BICMOS synthesizer applications of radio receivers, as well as

technology for frequency synthesizer. It performs all the RDS ( Radio Data System ) applications.

functions of a PLL radio tuning system and is controlled

by I C bus. The device is designed for all frequency

Features

Reference oscillator up to 15 MHz

Two programmable switching outputs (open drain up

to 20 V)

Two programmable 16 bit dividers

adjustable from 2 to 65535

Few external component requirements due to

integrated loop-transistor for AM/FM

Fine tuning steps: AM 1 kHz

FM 2 kHz

High signal/ noise ratio

Block Diagram

SWO 2

SWO 1

OSCIN

Oscillator

Switching outputs

R–Divider

OSCOUT

Latch

Status

SCL

Latch

Shift register

Latch

I C–BUS

SDA

Interface

PDFM

PDAM

Phase

detector

Current

sources

Preamplifier

FMOSC

AMOSC

PDFMO

PDAMO

Analogue

outputs

AM/FM

switch

Preamplifier

N–Divider

GND 1

GND 2

93 7581 e

Figure 1.

Rev. A1: 19.08.1996

1 (9)

Preliminary Information

12 3 4 5 6 7...9

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