DAC161P997

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DAC de 16 bits de un solo cable para 4-20mA bucles

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document-pdfAcrobat DAC161P997 Single-Wire 16-bit DAC for 4- to 20-mA Loops datasheet (Rev. G) (Inglés) PDF | HTML

DAC161P997

ACTIVO

Hoja de datos

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Detalles del producto

Resolution (Bits)

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 (Bits)

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 mm × 4 mm)

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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Documentación técnica

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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	DAC161P997 Single-Wire 16-bit DAC for 4- to 20-mA Loops datasheet (Rev. G)	PDF \| HTML	24/12/2014
	Circuit design	Circuit Replacing HART® Modem Device Competitors With the DAC8740H	PDF \| HTML	29/01/2026
	Nota sobre la aplicación	A Basic Guide to the HART Protocol	PDF \| HTML	9/11/2023
	Nota sobre la aplicación	AN-2245 MSP430 Interface to DAC161P997 Code Library (Rev. A)		22/04/2013

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