概览

优势和特点

  • 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 +115°C temperature range
  • 32-lead, 5 mm × 5 mm LFCSP package

产品详情

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.

Product Highlights

  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.

Applications

  • Process control
  • Actuator control
  • Channel isolated analog outputs
  • Programmable logic controller (PLC) and distributed control systems (DCS) applications
  • HART network connectivity

产品生命周期 icon-recommended 推荐新设计使用

本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。

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所示报价为单片价格。所列的美国报价单仅供预算参考,指美元报价(每片美国离岸价),如有修改恕不另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。