AD7294BSUZRL

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AD7294BSUZRL概述

模数转换器 - ADC 12B Monitor & Cntrl System w/ Temp Sensr

Product Details

The AD7294 contains all the functions required for general-purpose monitoring and control of current, voltage, and temperature integrated into a single-chip solution. The device includes low voltage ±200 mV analog input sense amplifiers for current monitoring across shunt resistors, temperature sense inputs, and four uncommitted analog input channels multiplexed into a SAR analog-to-digital converter ADC with a 3 μs conversion time. A high accuracy internal reference is provided to drive both the digital-to-analog converter DAC and ADC. Four 12-bit DACs provide the outputs for voltage control. The AD7294 also includes limit registers for alarm functions. The device is designed on Analog Devices, Inc., high voltage DMOS process for high voltage compliance, 59.4 V on the current sense inputs, and up to a 15 V DAC output voltage. 

The AD7294 is a highly integrated solution that offers all the functionality necessary for precise control of the power amplifier in cellular base station applications. In these types of applications, the DACs provide 12-bit resolution to control the bias currents of the power transistors. Thermal diode-based temperature sensors are incorporated to compensate for temperature effects. The ADC monitors the high-side current and temperature. All this functionality is provided in a 64-lead TQFP or a 56-lead LFCSP operating over a temperature range of −40°C to +105°C.

**Applications**

* Cellular base stations

> GSM, EDGE, UMTS, CDMA, TD-SCDMA, W-CDMA, WiMAX

>

* Point-to-multipoint and other RF transmission systems

* 12 V, 24 V, 48 V automotive applications

* Industrial controls

### Features and Benefits

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12-bit SAR ADC with 3 μs conversion time 
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4 uncommitted analog inputs - Please see data sheet for additional information
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2 high-side current sense inputs

5 V to 59.4 V operating range - Please see data sheet for additonal information

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2 external diode temperature sensor inputs

−55°C to +150°C measurement range Please see data sheet for addtional information

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1 internal temperature sensor

±2°C accuracy

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Built-in monitoring features

Minimum/maximum recorder for each channel - Please see data sheet for additional information

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Four 12-bit monotonic 15 V DACs
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5 V span, 0 V to 10 V offset - Please see data sheet for additional information
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Internal 2.5 V reference
.
2-wire fast mode I2C interface
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Temperature range: −40°C to +105°C
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Package type: 64-lead TQFP or 56-lead LFCSP
AD7294BSUZRL中文资料参数规格
技术参数

供电电流 0.25 mA

通道数 4

耗散功率 105 mW

采样率 22.22 ksps

分辨率Bits 12.0

工作温度Max 105 ℃

工作温度Min -40 ℃

耗散功率Max 105 mW

电源电压 4.5V ~ 5.5V

封装参数

安装方式 Surface Mount

引脚数 64

封装 TQFP-64

外形尺寸

高度 1 mm

封装 TQFP-64

物理参数

工作温度 -40℃ ~ 105℃

其他

产品生命周期 Active

包装方式 Tape & Reel TR

符合标准

RoHS标准 RoHS Compliant

含铅标准 Lead Free

军工级 No

海关信息

ECCN代码 EAR99

数据手册

AD7294BSUZRL引脚图与封装图
AD7294BSUZRL引脚图
AD7294BSUZRL电路图
在线购买AD7294BSUZRL
型号: AD7294BSUZRL
制造商: ADI 亚德诺
描述:模数转换器 - ADC 12B Monitor & Cntrl System w/ Temp Sensr
替代型号AD7294BSUZRL
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