Datasheet > U6239B

U6239B

更新时间： 2024-10-01 03:24:55

品牌	Logo	应用领域
TEMIC		电视
页数	文件大小	规格书
15页	262K
描述
2.9 GHz PLL for SAT TV Tuner with UNi-Bus

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U6239B 数据手册

U6239B

2.9 GHz PLL for SAT TV Tuner with UNi-Bus

Description

The U6239B is a single-chip frequency synthesizer with This IC contains an integrated preamplifier, a high

bidirectional I C bus control and unidirectional 3-wire frequency prescaler, a reference divider with multiple

bus control, developed for SAT TV-tuner and cable tuner programmable divider ratios, a crystal oscillator, a phase/

applications.

frequency detector together with a charge pump, a tuning

amplifier and an analog-to-digital converter.

Features

2.9 GHz divide-by-16 prescaler integrated

3-wire bus mode:

4 unidirectional ports (open collector)

Lock output (open collector)

UNi-BUS:

I C bus and 3-wire bus

Programmable reference divider

I C bus software compatible to U6223B

3-wire bus software compatible to LC7215 (Sanyo)

Low power consumption (typ. 5 V / 23 mA)

Electrostatic protection according to MIL-STD 883

I C bus mode:

4 bidirectional ports (open collector)

2 unidirectional ports (open collector)

5 level ADC or unidirectional port (open collector)

Address mode select function (AMS, Pin 3):

3 or 4 addresses selectable via Pin 10

Block Diagram

11 P0/Lock

5–bit Latch

AS / ENABLE / P3

ADC

UNI–BUS

Control

SCL

I/O

P6 / ADC

SDA 4

Ports

7–bit Latch

8–bit Latch

7–bit Latch

Power–on

reset

Vs 12

POR

14–bit Shift Reg.

GND15

RD1,2,3

15–bit Latch

Sync

LOCK

AMS

SET

15/14–bit

counter

RFi

div. by 16

Prescaler

RDS

Phase

detector

Charge

pump

RDS / AMS 3

16VD

1 PD

divide by 256/512/off/1024

divide by 25/50/140/250

divide by 50/100/280/500

XTAL

Oscillator

9611809

Figure 1.

TELEFUNKEN Semiconductors

1 (15)

Rev. A3, 28-May-97

12 3 4 5 6 7...15

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