Datasheet > AD74115

AD74115

更新时间： 2024-11-20 14:57:31

品牌	Logo	应用领域
亚德诺 - ADI		/
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单通道软件可配置输入和输出

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AD74115 数据手册

Data Sheet

AD74115

Single-Channel, Software Configurable Input and Output

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

Figure 1. Functional Block Diagram

► 10 ppm/°C reference temperature coefficient

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

► 14-bit monotonic DAC

GENERAL DESCRIPTION

The AD74115 is a single-channel, software-configurable, input and

output device for industrial control applications. The AD74115 pro-

vides 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 thermocouple

measurement capability. A serial peripheral interface (SPI) is used

to handle all communications to the device. 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.

► Unipolar and bipolar capability

► 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

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

and a 14-bit digital-to-analog converter (DAC). The AD74115 con-

tains 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 AD74115 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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