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數據轉換器
數位轉類比轉換器 (DAC)
精密 DAC (≤10 MSPS)

DAC8771

現行

具有適應性電源管理的單通道 16 位元電壓和電流輸出 DAC

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產品規格表

DAC8771

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Buffered Current, Buffered Voltage Settling time (µs) 10 Features Integrated Buck Boost Converter, Low Power Reference type Ext, Int Architecture String Rating Catalog Output range (max) (mA/V) 24 Output range (min) (mA/V) -24 Sample/update rate (Msps) 0.033 Power consumption (typ) (mW) 530 Operating temperature range (°C) -40 to 125
Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Buffered Current, Buffered Voltage Settling time (µs) 10 Features Integrated Buck Boost Converter, Low Power Reference type Ext, Int Architecture String Rating Catalog Output range (max) (mA/V) 24 Output range (min) (mA/V) -24 Sample/update rate (Msps) 0.033 Power consumption (typ) (mW) 530 Operating temperature range (°C) -40 to 125
VQFN (RGZ) 48 49 mm² 7 x 7
  • Output Current:
    • 0 mA - 24 mA; 3.5 mA - 23.5 mA;
      0 mA - 20 mA; 4 mA - 20 mA; ±24 mA
  • Output Voltage (with/without 20% over-range):
    • 0 V - 5 V; 0 V - 10 V; ±5 V; ±10 V
    • 0 V - 6 V; 0 V - 12 V; ±6 V; ±12 V
  • Adaptive Power Management
  • Single Wide Power Supply Pin
    • 12 V - 36 V with Buck-Boost
    • 12 V - 33 V without Buck-Boost
  • ±0.1% FSR Total Unadjusted Error (TUE)
  • DNL: ±1 LSB Max
  • Internal 5-V Reference (10 ppm/°C max)
  • Internal 5-V Digital Power Supply Output
  • CRC/Frame Error Check, Watchdog Timer
  • Thermal Alarm, Open/Short circuit
  • Safe actions on alarm condition
  • Auto Learn Feature
  • Wide Temperature Range: –40°C to +125°C
  • Output Current:
    • 0 mA - 24 mA; 3.5 mA - 23.5 mA;
      0 mA - 20 mA; 4 mA - 20 mA; ±24 mA
  • Output Voltage (with/without 20% over-range):
    • 0 V - 5 V; 0 V - 10 V; ±5 V; ±10 V
    • 0 V - 6 V; 0 V - 12 V; ±6 V; ±12 V
  • Adaptive Power Management
  • Single Wide Power Supply Pin
    • 12 V - 36 V with Buck-Boost
    • 12 V - 33 V without Buck-Boost
  • ±0.1% FSR Total Unadjusted Error (TUE)
  • DNL: ±1 LSB Max
  • Internal 5-V Reference (10 ppm/°C max)
  • Internal 5-V Digital Power Supply Output
  • CRC/Frame Error Check, Watchdog Timer
  • Thermal Alarm, Open/Short circuit
  • Safe actions on alarm condition
  • Auto Learn Feature
  • Wide Temperature Range: –40°C to +125°C

The DAC8771 is a single channel, precision, fully integrated 16-bit digital to analog converter (DAC) with adaptive power management, and is designed to meet the requirements of industrial control applications. The adaptive power management circuit, when enabled, minimizes the power dissipation of the chip. When programmed as a current output, the supply voltage on the current output driver is regulated between 4 V and 32 V based on continuous feedback of voltage on the current output pin via a buck/boost converter. When programmed as a voltage output, this circuit generates a programmable supply voltage for the voltage output stage (±15 V). DAC8771 contains an LDO to generate the digital supply (5 V) from a single power supply pin, particularly helpful in isolated applications.

DAC8771 is also implemented with a HART Signal Interface to superimpose an external HART signal on the current output. The slew rate of the current output DAC is register programmable. The devices can operate with a single external power supply of +12 V to +36 V using the integrated buck/boost converter or with external power supplies when the buck/boost converter is disabled.

The DAC8771 is a single channel, precision, fully integrated 16-bit digital to analog converter (DAC) with adaptive power management, and is designed to meet the requirements of industrial control applications. The adaptive power management circuit, when enabled, minimizes the power dissipation of the chip. When programmed as a current output, the supply voltage on the current output driver is regulated between 4 V and 32 V based on continuous feedback of voltage on the current output pin via a buck/boost converter. When programmed as a voltage output, this circuit generates a programmable supply voltage for the voltage output stage (±15 V). DAC8771 contains an LDO to generate the digital supply (5 V) from a single power supply pin, particularly helpful in isolated applications.

DAC8771 is also implemented with a HART Signal Interface to superimpose an external HART signal on the current output. The slew rate of the current output DAC is register programmable. The devices can operate with a single external power supply of +12 V to +36 V using the integrated buck/boost converter or with external power supplies when the buck/boost converter is disabled.
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類型 標題 日期
* Data sheet DAC8771 Single-Channel,16-Bit Voltage and Current Output Digital-to-Analog Converter with Adaptive Power Management datasheet PDF | HTML 2018年 2月 20日
Application note A Basic Guide to the HART Protocol PDF | HTML 2023年 11月 9日
Application brief Thermal Management to Increase Density in PLC AO Modules 2018年 6月 12日
User guide DAC8771 Evaluation Module 2018年 2月 21日

設計與開發

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開發板

DAC8771EVM — DAC8771 評估模組

The DAC8771 evaluation module (EVM) is an easy-to-use platform for evaluating the functionality and performance of the DAC8771 device. The DAC8771 is a 16-bit, single-channel, programmable-current or voltage-ouput digital-to-analog converter (DAC) with adaptive power (...)

使用指南: PDF
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模擬型號

DAC8771 IBIS Model

SLAM302.ZIP (50 KB) - IBIS Model
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計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
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參考設計

TIDA-01535 — 適用於電源隔離式超小型類比輸出模組的參考設計

This single-channel, power-isolated, analog output module reference design delivers current and voltage outputs using the highly-integrated DAC8771 digital-to-analog converter (DAC). The high integration of the DAC8771 coupled with the LM25180 primary-side regulated flyback converter lead to a (...)
Design guide: PDF
電路圖: PDF
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