ADI AD5758 16位数模转器(DAC)解决方案
原标题:ADI AD5758 16位数模转器(DAC)解决方案
ADI公司的AD5758是单路电压和电流输出的16位数模转器(DAC),工作电压从-33V (AVSS)到+33V(AVDD1),16位性能,片上有诊断功能包括12位ADC,用户可编失调和增益,电流输出范围0 mA - 20 mA, 4 mA - 20 mA, 0 mA - 24 mA, ±20 mA, ±24 mA, −1 mA - +22 mA ,电压输出范围0 V - 5 V, 0 V - 10 V, ±5 V和±10 V,工作温度范围−40°C 到 +11°5C,主要用在过程控制,激励器控制,通路隔离的模拟输出,可编逻辑控制器(PLC)和分布式控制系统(DCS)以及HART网络连接.本文介绍AD5758产品亮点和主要特性,功能框图以及评估板EVAL-AD5758SDZ主要特性,电路图,材料清单和PCB设计图.
The AD5758 is a single-channel, voltage and current output digital- to-analog converter (DAC) that operates with a power supply range from −33 V (minimum) on AVSS to +33 V (maximum) on AVDD1 with a maximum operating voltage between the two rails of 60 V. On-chip dynamic power control (DPC) minimizes package power dissipation, which is achieved by regulating the supply voltage (VDPC+) to the VIOUT output driver circuitry from 5 V to 27 V using a buck dc-to-dc converter, optimized for minimum on-chip power dissipation. The CHART pin enables a HART® signal to be coupled onto the current output. The device uses a versatile 4-wire serial peripheral interface (SPI) that operates at clock rates of up to 50 MHz and is compatible with standard SPI, QSPI™, MICROWIRE™, DSP, and microcontroller interface standards. The interface also features an optional SPI cyclic redundancy check (CRC) and a watchdog timer (WDT). The AD5758 offers improved diagnostic features from its predecessors, such as output current monitoring and an integrated 12-bit diagnostic analog-to-digital converter (ADC). Additional robustness is provided by the inclusion of a fault protection switch on the VIOUT, +VSENSE, and −VSENSE pins.
AD5758产品亮点:
1. Range of diagnostic features, including integrated ADC.
2. DPC, using an integrated buck dc-to-dc converter for thermal management, enabling higher channel count in smaller size module housing.
3. Programmable power control (PPC) mode to enable faster settling time (15 μs typical).
4. 16-bit performance.
5. HART compliant.
AD5758主要特性:
16-bit resolution and monotonicity
DPC for thermal management
Current/voltage output available on a single terminal
Current output ranges: 0 mA to 20 mA, 4 mA to 20 mA, 0 mA to 24 mA, ±20 mA, ±24 mA, −1 mA to +22 mA
Voltage output ranges (with 20% overrange): 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V User-programmable offset and gain
Advanced on-chip diagnostics, including a 12-bit ADC
On-chip reference
Robust architecture, including output fault protection
−40°C to +11°5C temperature range
32-lead, 5 mm × 5 mm LFCSP package
AD5758应用:
Process control
Actuator control
Channel isolated analog outputs
Programmable logic controller (PLC) and distributed control systems (DCS) applications
HART network connectivity
图1. AD5758功能框图
评估板EVAL-AD5758SDZ
This user guide describes the evaluation board for the AD5758, a functional safety certified, single-channel, voltage and current output, digital-to-analog converter (DAC) with on-chip dynamic power control (DPC) that minimizes package power dissipation. For full details on the AD5758, refer to the AD5758 data sheet. Consult the data sheet when using the EVAL-AD5758SDZ. The configuration of the various link options is explained in the Evaluation Board Hardware section. The installation of the companion software is discussed in the Software Quick Start Procedures section. The EVAL-AD5758SDZ, shown in Figure 1, requires the EVAL- SDP-CS1Z board. The EVAL-AD5758SDZ interfaces to the USB port of the PC via the EVAL-SDP-CS1Z board. Software that allows the user to easily program the AD5758, namely the Analysis|Control|Evaluation (ACE) software, is available with the EVAL-AD5758SDZ.
评估板EVAL-AD5758SDZ主要特性:
Full featured evaluation board for the AD5758
On-board 2.5 V ADR4525 reference
SPI ACE software for control
EVALUATION KIT CONTENTS
EVAL-AD5758SDZ evaluation board
EVAL-SDP-CS1Z
图2. 评估板EVAL-AD5758SDZ外形图
评估板EVAL-AD5758SDZ材料清单:
详情请见:
责任编辑:HanFeng
【免责声明】
1、本文内容、数据、图表等来源于网络引用或其他公开资料,版权归属原作者、原发表出处。若版权所有方对本文的引用持有异议,请联系拍明芯城(marketing@iczoom.com),本方将及时处理。
2、本文的引用仅供读者交流学习使用,不涉及商业目的。
3、本文内容仅代表作者观点,拍明芯城不对内容的准确性、可靠性或完整性提供明示或暗示的保证。读者阅读本文后做出的决定或行为,是基于自主意愿和独立判断做出的,请读者明确相关结果。
4、如需转载本方拥有版权的文章,请联系拍明芯城(marketing@iczoom.com)注明“转载原因”。未经允许私自转载拍明芯城将保留追究其法律责任的权利。
拍明芯城拥有对此声明的最终解释权。