Datasheet > MAX11008

MAX11008

更新时间： 2024-10-02 14:58:07

品牌	Logo	应用领域
亚德诺 - ADI		控制器存储
页数	文件大小	规格书
67页	657K
描述
双通道RF LDMOS偏置控制器，带有非易失存储器

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数据手册

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MAX11008 数据手册

19-4371; Rev 0; 11/08

Dual RF LDMOS Bias Controller with

Nonvolatile Memory

MAX108

General Description

Features

The MAX11008 controller biases RF LDMOS power

devices found in cellular base stations and other wire-

less infrastructure equipment. Each controller includes

a high-side current-sense amplifier with programmable

gains of 2, 10, and 25 to monitor the LDMOS drain cur-

rent over a range of 20mA to 5A. The MAX11008 sup-

ports up to two external diode-connected transistors to

monitor the LDMOS temperatures while an internal tem-

perature sensor measures the local die temperature. A

12-bit successive-approximation register (SAR) analog-

to-digital converter (ADC) converts the analog signals

from the programmable-gain amplifiers (PGAs), exter-

nal temperature sensors, internal temperature measure-

ment, and two additional auxiliary inputs. The

MAX11008 automatically adjusts the LDMOS bias volt-

ages by applying temperature, AIN, and/or drain cur-

rent samples to data stored in lookup tables (LUTs).

♦ On-Chip 4Kb EEPROM for Storing LDMOS Bias

Characteristics

♦ Integrated High-Side Current-Sense PGA with

Gain of 2, 10, or 25

♦

0ꢀ.5ꢁ Accuracꢂ for Sense ꢃoꢄtage Between

+.5mꢃ and +1250mꢃ

♦ Fuꢄꢄ-Scaꢄe Sense ꢃoꢄtage

+100mꢃ with a Gain of 25

+250mꢃ with a Gain of 10

+1250mꢃ with a Gain of 2

♦ Common-Mode Range, LDMOS Drain ꢃoꢄtage:

+5ꢃ to +32ꢃ

♦ Adjustabꢄe Low-Noise 0 to Aꢃ

Output Gate

Bias ꢃoꢄtage Range

The MAX11008 includes two gate-drive channels, each

consisting of a 12-bit DAC to generate the positive gate

voltage for biasing the LDMOS devices. Each gate-

drive output supplies up to 2mA of gate current. The

gate-drive amplifier is current-limited to 25mA and

features a fast clamp to AGND.

♦ Fast Cꢄamp to AGND for LDMOS Protection

♦ 12-Bit DAC Controꢄ of Gate with Temperature

♦ Internaꢄ Die Temperature Measurement

♦ 2-Channeꢄ Externaꢄ Temperature Measurement

through Remote Diodes

The MAX11008 contains 4Kb of on-chip, nonvolatile

EEPROM organized as 256 bits x 16 bits to store LUTs

and register information. The device operates from

either a 4-wire 16MHz SPI™-/MICROWIRE™-compati-

ble or an I²C-compatible serial interface.

♦ Internaꢄ 12-Bit ADC Measurement for

Temperature, Current, and ꢃoꢄtage Monitoring

♦ User-Seꢄectabꢄe Seriaꢄ Interface

400kHz/1ꢀ.MHz/3ꢀ4MHz I²C-Compatibꢄe Interface

16MHz SPI-/MICROWIRE-Compatibꢄe Interface

The MAX11008 operates from a +4.75V to +5.25V ana-

log supply with a typical supply current of 2mA, and a

+2.7V to +5.25V digital supply with a typical supply of

3mA. The device is packaged in a 48-pin, 7mm x 7mm,

thin QFN package and operates over the extended

(-40°C to +85°C) temperature range.

Applications

Ordering Information

Cellular Base Stations

Microwave Radio Links

Feed-Forward Power Amps

Transmitters

TEMP

ERROR (°C)

PART

PIN-PACKAGE

MAX11008BETM+

48 TQFN-EP*

+Denotes a lead-free/RoHS-compliant package.

*EP = Exposed pad.

Industrial Process Control

Note: The device is specified over the -40°C to +85°C operating

temperature range.

SPI is a trademark of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

________________________________________________________________ Maxim Integrated Products

For pricing, deꢄiverꢂ, and ordering information, pꢄease contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at wwwꢀmaxim-icꢀcomꢀ

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与MAX11008相关器件

型号	品牌	获取价格	描述	数据表
MAX11008BETM+	MAXIM	获取价格	Dual RF LDMOS Bias Controller with Nonvolatile Memory
MAX11008BETM+T	MAXIM	获取价格	暂无描述
MAX11008EVC16	MAXIM	获取价格	Lead(Pb)-Free and RoHS Compliant
MAX11008EVKIT	MAXIM	获取价格	Lead(Pb)-Free and RoHS Compliant
MAX11008EVKIT+	MAXIM	获取价格	Lead(Pb)-Free and RoHS Compliant
MAX1101	MAXIM	获取价格	Single-Chip, 8-Bit CCD Digitizer with Clamp and 6-Bit PGA
MAX11014	MAXIM	获取价格	Automatic RF MESFET Amplifier Drain-Current Controllers
MAX11014_08	MAXIM	获取价格	Automatic RF MESFET Amplifier Drain-Current Controllers
MAX11014BGTM	MAXIM	获取价格	Automatic RF MESFET Amplifier Drain-Current Controllers
MAX11014BGTM+	MAXIM	获取价格	Automatic RF MESFET Amplifier Drain-Current Controllers

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