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U6239B

2.9 GHz PLL for SAT TV Tuner with UNi-Bus

Description

The U6239B is a single-chip frequency synthesizer with

bidirectional I

2

C bus control and unidirectional 3-wire

bus control, developed for SAT TV-tuner and cable tuner

applications.

This IC contains an integrated preamplifier, a high

frequency prescaler, a reference divider with multiple

programmable divider ratios, a crystal oscillator, a phase/

frequency detector together with a charge pump, a tuning

amplifier and an analog-to-digital converter.

Features

D

2.9 GHz divide-by-16 prescaler integrated

D

UNi-BUS:

I

2

C bus and 3-wire bus

I

2

C bus software compatible to U6223B

3-wire bus software compatible to LC7215 (Sanyo)

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

D

3-wire bus mode:

4 unidirectional ports (open collector)

Lock output (open collector)

D

I

2

C bus mode:

D

Programmable reference divider

D

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

D

Electrostatic protection according to MIL-STD 883

Block Diagram

AS / ENABLE / P3

10

SCL 5

SDA 4

UNI鈥揃US

Control

11 P0/Lock

5鈥揵it Latch

ADC

I/O

Ports

7鈥揵it Latch

8鈥揵it Latch

7鈥揵it Latch

T1

9 P4

8 P5

7 P6 / ADC

6 P7

Vs 12

GND 15

Power鈥搊n

reset

POR

14鈥揵it Shift Reg.

Sync

15鈥揵it Latch

LOCK

T0

5I

RD1,2,3

OS

AMS

RFi

14

13

div. by 16

Prescaler

SET

15/14鈥揵it

counter

RDS

divide by 256/512/off/1024

divide by 25/50/140/250

divide by 50/100/280/500

Phase

detector

Charge

pump

FR

FP

RDS / AMS 3

XTAL 2

Oscillator

16 VD

1 PD

9611809

Figure 1.

TELEFUNKEN Semiconductors

Rev. A3, 28-May-97

1 (15)

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U6239B相關(guān)型號(hào)PDF文件下載

• 型號(hào)
  版本
  描述
  廠商
  下載
• U6239B
  英文版
  2.9 GHz PLL for SAT TV Tuner with UNi-Bus
  TEMIC
  U6239B
• U6239B
  英文版
  2.9 GHz PLL for SAT TV Tuner with UNi-Bus
  
  U6239B
• U6239B-AFP...
  英文版
  2.9 GHz PLL for SAT TV Tuner with UNi-Bus
  TEMIC
  U6239B-AFPG3
• U6239B-AFP...
  英文版
  2.9 GHz PLL for SAT TV Tuner with UNi-Bus
  TEMIC [TEM...
  U6239B-AFPG3
• U6239B-AFS...
  英文版
  Analog IC
  ETC
  U6239B-AFSG3
• U6239B-CFP...
  英文版
  Analog Phase-Locked Loop
  ETC
  U6239B-CFPG3

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