Datasheet > AD7294-2BSUZ-RL

AD7294-2BSUZ-RL

更新时间： 2024-02-08 23:42:17

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
44页	969K
描述
12-Bit Monitor and Control System with Multichannel ADC, DACs, Temperature Sensor, and Current Sense

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AD7294-2BSUZ-RL 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	TFQFP,
针数：	64	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.57	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	S-PQFP-G64	JESD-609代码：	e3
长度：	7 mm	湿度敏感等级：	3
功能数量：	1	端子数量：	64
最高工作温度：	105 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TFQFP
封装形状：	SQUARE	封装形式：	FLATPACK, THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：	260	座面最大高度：	1.2 mm
最大供电电压 (Vsup)：	5.5 V	最小供电电压 (Vsup)：	4.5 V
标称供电电压 (Vsup)：	5 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	0.4 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	30
宽度：	7 mm	Base Number Matches：	1

AD7294-2BSUZ-RL 数据手册

12-Bit Monitor and Control System with Multichannel

ADC, DACs, Temperature Sensor, and Current Sense

Data Sheet

AD7294-2

FEATURES

APPLICATIONS

12-bit SAR ADC with 3 μs conversion time

4 uncommitted analog inputs

Differential/single-ended

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

_REF, 2 × V_REFinput ranges

2 high-side current sense inputs

5 V to 59.4 V operating range

0.75% maximum gain error

GENERAL DESCRIPTION

The AD7294-2 contains all the functions that are required for

general-purpose monitoring and control of current, voltage,

and temperature, integrated into a single-chip solution. The part

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 converters (DACs) and the

ADC. Four 12-bit DACs provide the outputs for voltage control.

The AD7294-2 also includes limit registers for alarm functions.

The part is designed for high voltage compliance: 59.4 V on the

current sense inputs and up to a 15 V DAC output voltage.

200 mV input range

2 external diode temperature sensor inputs

−55°C to +150°C measurement range

2°C accuracy

Series resistance cancellation

1 internal temperature sensor: 2°C accuracy

Built-in monitoring features

Minimum/maximum recorder for each channel

Programmable alert thresholds

Programmable hysteresis

Four 12-bit, monotonic, 15 V DACs

5 V span, 0 V to 10 V offset

8 μs settling time

10 mA sink and source capability

Power-on reset (POR) to 0 V

Internal 2.5 V reference

2-wire, fast mode I²C interface

Temperature range: −40°C to +105°C

Package type: 64-lead TQFP

Pin compatible with the AD7294

The AD7294-2 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. This functionality

is provided in a 64-lead TQFP, which operates over a temperature

range of −40°C to +105°C.

Rev. 0

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

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