Datasheet > DS1870

DS1870

更新时间： 2024-02-28 14:43:47

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
28页	373K
描述
LDMOS RF Power-Amplifier Bias Controller

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数据手册

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DS1870 数据手册

Rev 2; 2/06

LDMOS RF Power-Amplifier Bias

Controller

DS1870

General Description

Features

♦ Two-Channel Solution for Programmable RF Bias

The DS1870 is a dual-channel bias controller targeted

toward class AB LDMOS RF power-amplifier applica-

tions. It uses lookup tables (LUTs) to control 256-posi-

tion potentiometers based on the amplifier’s

temperature and drain voltage or current (or other

external monitored signal). With its internal temperature

sensor and multichannel A/D converter (ADC), the

DS1870 provides a cost-effective solution that improves

the amplifier’s efficiency by using nonlinear compensa-

tion schemes that are not possible with conventional

biasing solutions.

Control

♦ The Potentiometer’s Position is Automatically

Updated to Compensate for the Ambient

Temperature and the Drain Voltage or Current

♦ A Five-Channel, 13-Bit ADC Continuously

Monitors the Ambient Temperature, V , V , I

D D1,

and I

♦ Hi/Lo Alarms for Each ADC Channel can Trigger a

Fault Output

♦ Nonvolatile Memory for the Device Settings,

Lookup Tables, and 32-Bytes of User Memory

Applications

♦ I²C*-Compatible Serial Interface with Up to Eight

Cellular Base Stations

Medical Equipment

Industrial Controls

Devices on the Same Serial Bus

♦ Single 5V Power Supply

♦ Small 16-Pin TSSOP Package

Optical Transceivers

♦ -40°C to +95°C Operational Temperature Range

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

16 TSSOP

(173 mils)

DS1870E-010

-40°C to +95°C

*Purchase of I C components of Maxim Integrated Products,

16 TSSOP

(173 mils)

DS1870E-010+

-40°C to +95°C

Inc., or one of its sublicensed Associated Companies, conveys

a license under the Philips I C Patent Rights to use these com-

ponents in an I C system, provided that the system conforms

+Denotes lead-free package.

to the I C Standard Specification as defined by Philips.

Typical Operating Circuit appears at end of data sheet.

Pin Configuration

TOP VIEW

COM

SDA

SCL

DS1870

GND

FAULT

TSSOP (173 mils)

______________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...28

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与DS1870相关器件

型号	品牌	获取价格	描述	数据表
DS1870_06	MAXIM	获取价格	LDMOS RF Power-Amplifier Bias Controller
DS1870E-010	MAXIM	获取价格	LDMOS RF Power-Amplifier Bias Controller
DS1870E-010+	MAXIM	获取价格	Analog Circuit, 1 Func, PDSO16, 0.173 INCH, ROHS COMPLIANT, TSSOP-16
DS1873	MAXIM	获取价格	SFP+ Controller with Analog LDD Interface
DS1873T+	MAXIM	获取价格	SFP+ Controller with Analog LDD Interface
DS1873T+TR	MAXIM	获取价格	SFP+ Controller with Analog LDD Interface
DS1874	MAXIM	获取价格	SFP+ Controller with Digital LDD Interface
DS1874T+	MAXIM	获取价格	SFP+ Controller with Digital LDD Interface
DS1874T+T&R	MAXIM	获取价格	暂无描述
DS1874T+TR	MAXIM	获取价格	SFP+ Controller with Digital LDD Interface

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