Produktdetails

Resolution (bps) 16 Number of DAC channels 1 Interface type Single-Wire Output type Buffered Current INL (max) (±LSB) 9 Reference type Ext Architecture Delta-Sigma Rating Catalog Features 4-20mA loop transmitter, Low Power Power consumption (typ) (mW) 0.5 Operating temperature range (°C) -40 to 105 Product type Special-function DAC
Resolution (bps) 16 Number of DAC channels 1 Interface type Single-Wire Output type Buffered Current INL (max) (±LSB) 9 Reference type Ext Architecture Delta-Sigma Rating Catalog Features 4-20mA loop transmitter, Low Power Power consumption (typ) (mW) 0.5 Operating temperature range (°C) -40 to 105 Product type Special-function DAC
WQFN (RGH) 16 16 mm² 4 x 4
  • 16-Bit Linearity
  • Single-Wire Interface (SWIF), with Handshake
  • Digital Data Transmission (No Loss of Fidelity)
  • Pin Programmable Power-Up Condition
  • Self Adjusting to Input Data Rate
  • Loop Error Detection and Rreporting
  • Programmable Output Current Error Level
  • No External Precision Components
  • Simple Interface to HART Modulator
  • Small Package: WQFN-16 (4 × 4 mm, 0.5 mm Pitch)
  • Key
    • Output Current TempCo: 29 ppmFS/°C (Max)
    • Long-Term Output Current Drift: 90 ppmFS (Typ)
    • INL: 3.3/–2.1 µA(Max)
    • Total Supply Current: 190 µA (Max)

Application

  • Two-Wire, 4-20 mA Current Loop Transmitter
  • Industrial Process Control
  • Actuator Control
  • Factory Automation
  • Building Automation
  • Precision Instruments
  • Data Acquisition Systems
  • Test Systems

All trademarks are the property of their respective owners.

  • 16-Bit Linearity
  • Single-Wire Interface (SWIF), with Handshake
  • Digital Data Transmission (No Loss of Fidelity)
  • Pin Programmable Power-Up Condition
  • Self Adjusting to Input Data Rate
  • Loop Error Detection and Rreporting
  • Programmable Output Current Error Level
  • No External Precision Components
  • Simple Interface to HART Modulator
  • Small Package: WQFN-16 (4 × 4 mm, 0.5 mm Pitch)
  • Key
    • Output Current TempCo: 29 ppmFS/°C (Max)
    • Long-Term Output Current Drift: 90 ppmFS (Typ)
    • INL: 3.3/–2.1 µA(Max)
    • Total Supply Current: 190 µA (Max)

Application

  • Two-Wire, 4-20 mA Current Loop Transmitter
  • Industrial Process Control
  • Actuator Control
  • Factory Automation
  • Building Automation
  • Precision Instruments
  • Data Acquisition Systems
  • Test Systems

All trademarks are the property of their respective owners.

The DAC161P997 is a 16-bit ΣΔ digital-to-analog converter (DAC) for transmitting an analog output current over an industry standard 4-20 mA current loop. It offers 16-bit accuracy with a low output current temperature coefficient (29 ppm/°C) and excellent long-term output current drift (90 ppmFS) while consuming less than 190 µA.

The data link to the DAC161P997 is a Single Wire Interface (SWIF) which allows sensor data to be transferred in digital format over an isolation boundary using a single isolation component. The DAC161P997’s digital input is compatible with standard isolation transformers and opto-couplers. Error detection and handshaking features within the SWIF protocol ensure error free communication across the isolation boundary. For applications where isolation is not required, the DAC161P997 interfaces directly to a microcontroller.

The loop drive of the DAC161P997 interfaces to a HART (Highway Addressable Remote Transducer) modulator, allowing injection of FSK modulated digital data into the 4-20 mA current loop. This combination of specifications and features makes the DAC161P997 ideal for 2- and 4-wire industrial transmitters.

The DAC161P997 is available in a 16-lead WQFN package and is specified over the extended industrial temperature range of –40°C to 105°C.

The DAC161P997 is a 16-bit ΣΔ digital-to-analog converter (DAC) for transmitting an analog output current over an industry standard 4-20 mA current loop. It offers 16-bit accuracy with a low output current temperature coefficient (29 ppm/°C) and excellent long-term output current drift (90 ppmFS) while consuming less than 190 µA.

The data link to the DAC161P997 is a Single Wire Interface (SWIF) which allows sensor data to be transferred in digital format over an isolation boundary using a single isolation component. The DAC161P997’s digital input is compatible with standard isolation transformers and opto-couplers. Error detection and handshaking features within the SWIF protocol ensure error free communication across the isolation boundary. For applications where isolation is not required, the DAC161P997 interfaces directly to a microcontroller.

The loop drive of the DAC161P997 interfaces to a HART (Highway Addressable Remote Transducer) modulator, allowing injection of FSK modulated digital data into the 4-20 mA current loop. This combination of specifications and features makes the DAC161P997 ideal for 2- and 4-wire industrial transmitters.

The DAC161P997 is available in a 16-lead WQFN package and is specified over the extended industrial temperature range of –40°C to 105°C.

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Typ Titel Datum
* Data sheet DAC161P997 Single-Wire 16-bit DAC for 4- to 20-mA Loops datasheet (Rev. G) PDF | HTML 24 Dez 2014
Application note A Basic Guide to the HART Protocol PDF | HTML 09 Nov 2023
Application note AN-2245 MSP430 Interface to DAC161P997 Code Library (Rev. A) 22 Apr 2013
EVM User's guide DAC161P997 Evaluation Board User Guide 27 Jan 2012

Design und Entwicklung

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Treiber oder Bibliothek

SNAC041 Associated Files for Application Note MSP430 Interface DAC161P997 Code Library

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