Datasheet > AD74115H

AD74115H

更新时间： 2023-12-20 18:46:38

品牌	Logo	应用领域
亚德诺 - ADI		调制解调器
页数	文件大小	规格书
113页	3495K
描述
具有HART调制解调器的单通道软件可配置输入/输出

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AD74115H 数据手册

Data Sheet

AD74115H

Single-Channel, Software Configurable Input and Output with HART Modem

FEATURES

FUNCTIONAL BLOCK DIAGRAM

► Single-channel software configurable input and output

► Multiple configurable modes to a single pin

► Voltage input

► Current input

► Voltage output

► Current output

► Digital input

► Digital output

► 2-wire, 3-wire, or 4-wire RTD measurements

► Thermocouple measurement

► Overvoltage tolerant on screw terminal facing pins, powered or

unpowered

► Auxiliary high voltage sense pins

► 10 ppm/°C reference temperature coefficient

► 16-bit, Σ-∆ ADC with optional 50 Hz and 60 Hz rejection

► 14-bit monotonic DAC

► Unipolar and bipolar capability

► Integrated HART modem

► On-chip diagnostics including open-circuit and short-circuit de-

tection

► Internal temperature sensor, ±5°C accuracy

► SPI-compatible

► Wide power supply range

► Programmable power control

► Temperature range: −40°C to +105°C

► 48-lead LFCSP

Figure 1. Functional Block Diagram

GENERAL DESCRIPTION

The AD74115H is a single-channel, software-configurable, input

and output device for industrial control applications. The AD74115H

provides a wide range of use cases, integrated on a single chip.

These use cases include analog output, analog input, digital output,

digital input, resistance temperature detector (RTD), and thermo-

couple measurement capability. The AD74115H also has an inte-

grated HART modem. A serial peripheral interface (SPI) is used to

handle all communications to the device, including communications

with the HART modem. The digital input and digital outputs can

be accessed via the SPI or the general-purpose input and output

(GPIO) pins to support higher speed data rates.

The device features a 16-bit, Σ-Δ analog-to-digital converter (ADC)

and a 14-bit digital-to-analog converter (DAC). The AD74115H

contains a high accuracy 2.5 V on-chip reference that can be used

as the DAC and ADC reference.

APPLICATIONS

► Isolated industrial control systems

► Process control

► Factory automation

Power and isolation can be provided using the ADP1034 compan-

ion product. When using the ADP1034 and AD74115H together,

programmable power control (PPC) is available on the positive

analog supply, AVDD, which allows for an optimized power solution

in the end application. An on-chip charge pump can be enabled if

unipolar capability is required.

► Building control systems

COMPANION PRODUCTS

► Power and Data Isolation with PPC: ADP1034

► Voltage Reference: ADR4525

Rev. 0

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

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its 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 and

registered trademarks are the property of their respective owners.

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

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