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

DAC8775

現行

16 位元四通道可編程電流輸出與電壓輸出類比轉數位轉換器 (DAC)

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產品規格表

DAC8775

現行
立即訂購

產品詳細資料

Resolution (Bits) 16 Number of DAC channels 4 Interface type SPI Output type Buffered Current, Buffered Voltage Output voltage range (V) -10 to 10, -12 to 12, -5 to 5, 0 to 10, 0 to 5, 0 to 6 INL (max) (±LSB) 12 Settling time (µs) 10 Reference type Ext, Int Architecture String Rating Catalog Features Integrated Buck Boost Converter, Low Power Sample/update rate (Msps) 0.033 Power consumption (typ) (mW) 530 Operating temperature range (°C) -40 to 125 Product type Special-function DAC
Resolution (Bits) 16 Number of DAC channels 4 Interface type SPI Output type Buffered Current, Buffered Voltage Output voltage range (V) -10 to 10, -12 to 12, -5 to 5, 0 to 10, 0 to 5, 0 to 6 INL (max) (±LSB) 12 Settling time (µs) 10 Reference type Ext, Int Architecture String Rating Catalog Features Integrated Buck Boost Converter, Low Power Sample/update rate (Msps) 0.033 Power consumption (typ) (mW) 530 Operating temperature range (°C) -40 to 125 Product type Special-function DAC
VQFN (RWF) 72 100 mm² (10 mm × 10 mm)
  • Output Current:
    • 0 mA to 24 mA; 3.5 mA to 23.5 mA; 0 mA to 20 mA; 4 mA to 20 mA; ±24 mA
  • Output Voltage (with/without 20% over-range):
    • 0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V
    • 0 V to 6 V; 0 V to 12 V; ±6 V; ±12 V
  • Adaptive Power Management
  • Single Wide Power Supply Pin (12 V – 36 V)
  • ±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 for System Reliability
  • Safe Actions on Alarm Condition
  • Auto Learn Load Detection
  • Wide Temperature Range: –40°C to +125°C
  • Output Current:
    • 0 mA to 24 mA; 3.5 mA to 23.5 mA; 0 mA to 20 mA; 4 mA to 20 mA; ±24 mA
  • Output Voltage (with/without 20% over-range):
    • 0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V
    • 0 V to 6 V; 0 V to 12 V; ±6 V; ±12 V
  • Adaptive Power Management
  • Single Wide Power Supply Pin (12 V – 36 V)
  • ±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 for System Reliability
  • Safe Actions on Alarm Condition
  • Auto Learn Load Detection
  • Wide Temperature Range: –40°C to +125°C

The DAC8775 is a quad-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 4.5 V and 32 V based on continuous feedback of voltage on the current output pin via an integrated buck/boost converter. When programmed as a voltage output, this circuit generates a programmable supply voltage for the voltage output stage (±15 V). DAC8775 also contains an LDO to generate the digital supply (5 V) from a single power supply pin.

DAC8775 is also implemented with a Highway Addressable Remote Transducer (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 device can operate with a single external power supply of +12 V to +36 V using the integrated buck/boost converters or with external power supplies when the buck/boost converters are disabled.

The DAC8775 is a quad-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 4.5 V and 32 V based on continuous feedback of voltage on the current output pin via an integrated buck/boost converter. When programmed as a voltage output, this circuit generates a programmable supply voltage for the voltage output stage (±15 V). DAC8775 also contains an LDO to generate the digital supply (5 V) from a single power supply pin.

DAC8775 is also implemented with a Highway Addressable Remote Transducer (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 device can operate with a single external power supply of +12 V to +36 V using the integrated buck/boost converters or with external power supplies when the buck/boost converters are disabled.
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功能相同，但針腳輸出與所比較的裝置不同。
DAC8760 現行 適用 4-20mA 電流迴路應用的 16 位元單通道可編程電流/電壓輸出 DAC Similar resolution product without adaptive power management in a smaller package.

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 DAC8775 Quad-Channel, 16-Bit Programmable Current Output and Voltage Output Digital-to-Analog Converter with Adaptive Power Management datasheet PDF | HTML 2017/2/7
類比設計期刊 如何使用適應性電源將 PLC 輸出功耗減 半 PDF | HTML 2026/4/24
應用說明 A Simple, Java-Based CRC Calculator PDF | HTML 2026/3/4
Circuit design Circuit Replacing HART® Modem Device Competitors With the DAC8740H PDF | HTML 2026/1/29
Circuit design 來自 +5V 供電電源且用於高電壓資料轉換器的精密、±15V 電 源供應電路 PDF | HTML Download English Version 2025/12/9
Circuit design Output Overvoltage Protection Circuit for Voltage DACs With an External Feedback Pin PDF | HTML 2025/7/29
Circuit design Programmable, two-stage, high-side current source circuit (Rev. A) PDF | HTML 2024/9/19
應用說明 A Basic Guide to the HART Protocol PDF | HTML 2023/11/9
Application brief Thermal Management to Increase Density in PLC AO Modules 2018/6/12

設計與開發

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開發板

DAC8775EVM — DAC8775 評估模組

DAC8775 評估模組 (EVM) 是一款易於使用的平台，用於評估 DAC8775 產品的功能與性能。DAC8775 是一款 16 位元的四通道、可編程電流或電壓輸出的數位轉類比轉換器 (DAC)，並具備自適應電源管理功能。EVM 是一個完整的評估套件，包括與 Microsoft® Windows® XP 和 7/8/10 作業系統相容的 PCB、SM-USB-DIG、USB 傳輸線和評估軟體。

使用指南: PDF
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模擬型號

DAC8775 IBIS Model

SLVMBZ7.ZIP (49 KB) - IBIS 模型
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設計工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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參考設計

TIPD215 — 具有自適型電源管理、功耗低於 1W 的四通道類比輸出模組參考設計

此四通道類比輸出模組使用高度整合的DAC8775數位轉類比轉換器 (DAC) 提供電壓和電流輸出。整合式自適應電源管理與LM5166降壓轉換器，即使同時以 20 mA 驅動所有四個通道，都能將參考設計的總降低至 1 W 以下。
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參考設計

TIPD216 — 四通道工業電壓和電流輸出驅動器參考設計 (經 EMC/EMI 測試)

此四通道類比輸出模組使用高度整合的 DAC8775 類比前端提供電壓和電流輸出。整合式自適應電源管理可將晶片的功耗降到最低。此外，實作外部保護電路，以抵禦 IEC61000-4 測試套件的干擾。
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VQFN (RWF) 72 Ultra Librarian
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