U2893B

更新时间： 2024-02-22 07:08:36

品牌	Logo	应用领域
TEMIC		过程控制系统分布式控制系统 PCS GSM DCS
页数	文件大小	规格书
14页	295K
描述
Modulation PLL for GSM, DCS and PCS Systems

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技术参数
数据手册

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U2893B 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	SSO-28	Reach Compliance Code：	unknown
风险等级：	5.74	JESD-30 代码：	R-PDSO-G28
JESD-609代码：	e0	功能数量：	1
端子数量：	28	最高工作温度：	85 °C
最低工作温度：	-20 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装等效代码：	SSOP28,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	3/5 V	认证状态：	Not Qualified
子类别：	Other Telecom ICs	表面贴装：	YES
技术：	BIPOLAR	电信集成电路类型：	TELECOM CIRCUIT
温度等级：	OTHER	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	Base Number Matches：	1

U2893B 数据手册

U2893B

Modulation PLL for GSM, DCS and PCS Systems

Description

The U2893B is a monolithic integrated circuit. It is tecture where the VCO is operated at the TX output

realized using TEMIC’s advanced silicon bipolar UHF5S frequency.

technology. The device integrates a mixer, an I/Q modu-

U2893B exhibits low power consumption, and the power-

lator, a phase-frequency detector (PFD) with two

down function extends battery life.

synchronous-programmable dividers, and a charge pump.

The U2893B is designed for cellular phones such as GSM, The IC is available in a shrinked small-outline 28–pin

DCS1800, and PCS1900, applying a transmitter-archi- package (SSO28).

Features

Benefits

High-level RF integration

Supply voltage down to 2.7 V

TX architecture saves filter costs

Low external part count

Current consumption 40 mA

Power-down function

Small SSO28 package

Low-current standby mode

High-speed PFD and charge pump

Integrated dividers

One device for various applications

Block Diagram

MDLO

PUMIX

MIXO

MIXLO

Voltage

reference

grd

MDO

NRF

Mixer

NMDO

I/Q modulator

VSP

CPO

MUX

N : 1

divider

NND

PFD

R : 1

divider

NRD

VS1

VS2

Mode

control

VS3

12494

CPC

GND

GNDP

Figure 1. Block diagram

TELEFUNKEN Semiconductors

1 (14)

Rev. A1, 29-Jan-97

Preliminary Information

12 3 4 5 6 7...14

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