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| AD5593R八路12位可配置模数-数模转换器方案 |
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| 文章来源： 更新时间：2015/1/6 11:16:00 |
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ADI公司的AD5593R是八路12位可配置ADC/DAC,集成了片上基准和I2C接口,它的八个输入/输出(I/O)引脚可配置成DAC输出,ADC输入,数字输入或数字输出.I/O脚配置成模拟输出,它由12位DAC驱动; I/O脚配置成模拟输入,通过模拟复接器连接到12位ADC.主要用在控制和监视,通用模拟和数字I/O.本文介绍了AD5593R主要特性,功能框图,以及评估板EVAL-AD5593RSDZ主要特性,连接图,电路图和材料清单.
The AD5593R has eight input/output (I/O) pins, which can be independently configured as digital-to-analog converter (DAC) outputs, analog-to-digital converter (ADC) inputs, digital outputs, or digital inputs. When an I/O pin is configured as an analog output, it is driven by a 12-bit DAC. The output range of the DAC is 0 V to VREF or 0 V to 2 × VREF. When an I/O pin is configured as an analog input, it is connected to a 12-bit ADC via an analog multiplexer. The input range of the ADC is 0 V to VREF or 0 V to 2 × VREF. The I/O pins can also be configured to be general-purpose, digital input or output (GPIO) pins. The state of the GPIO pins can be set or read back by accessing the GPIO write data register and GPIO read configuration registers, respectively, via an I2C write or read operation.
The AD5593R has an integrated 2.5 V, 20 ppm/℃ reference that is turned off by default and an integrated temperature indicator that gives an indication of the die temperature. The temperature value is read back as part of an ADC read sequence.
The AD5593R is available in a 16-lead TSSOP and a 16-ball WLCSP and operates over a temperature range of −40℃ to +105℃.
AD5593R主要特性:
8-channel, configurable ADC/DAC/GPIO
Configurable as any combination of
8 12-bit DAC channels
8 12-bit ADC channels
8 general-purpose I/O pins
Integrated temperature sensor
16-lead TSSOP and 16-ball WLCSP packages
I2C interface
AD5593R 应用:
Control and monitoring
General-purpose analog and digital I/O
图1. AD5593R功能框图
AD5593R评估板EVAL-AD5593RSDZ
The evaluation board is designed to help customers quickly prototype new AD5593R circuits and reduce design time. The AD5593R operates from a single 2.7 V to 5.5 V supply and incorporates an internal 2.5 V reference to give an output voltage span of 2.5 V or 5 V. An external reference (a 2.5 V reference is provided on the evaluation board) can also be used to give an output from 0 V to VREF or 0 V to 2 × VREF.
Full data on the AD5593R can be found in the AD5593R data sheet, available from Analog Devices and should be consulted in conjunction with this user guide when using the evaluation board.
The evaluation board interfaces to the USB port of a PC via the SDP board. Software is supplied with the evaluation board to allow the user to program the AD5593R.
This evaluation board requires the EVAL-SDP-CB1Z board (SDP-B controller board), which is available for order on the Analog Devices website at www.analog.com.
AD5593R evaluation board
CD includes
Self-installing software that allows users to control the board and exercise all functions of the device
Electronic version of the EVAL-AD5593RSDZ user guide
图2. AD5593R评估板连接图
图3. AD5593R评估板框图
图4. AD5593R评估板电路图(1)
图5. AD5593R评估板电路图(2)
AD5593R评估板材料清单:
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