DAC8771
- Output Current:
- 0 mA - 24 mA; 3.5 mA - 23.5 mA;
0 mA - 20 mA; 4 mA - 20 mA; ±24 mA
- 0 mA - 24 mA; 3.5 mA - 23.5 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.
技術文件
| 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 | DAC8771 Single-Channel,16-Bit Voltage and Current Output Digital-to-Analog Converter with Adaptive Power Management datasheet | PDF | HTML | 2018/2/20 | ||
| 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 | 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 | PDF | HTML | 2025/12/9 | |
| Circuit design | Output Overvoltage Protection Circuit for Voltage DACs With an External Feedback Pin | PDF | HTML | 2025/7/29 | |||
| 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
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
DAC8771EVM — DAC8771 評估模組
DAC8771 評估模組 (EVM) 是一款易於使用的平台，用於評估 DAC8771 裝置的功能與性能。DAC8771 是一款 16 位元的單通道、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。DAC8771EVM 包含可與 Microsoft® Windows® XP 和 7/8/10 作業系統相容的評估軟體。
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
TIDA-01535 — 適用於電源隔離式超小型類比輸出模組的參考設計
此單通道、電源隔離式類比輸出模組參考設計使用高度整合的 DAC8771 數位轉類比轉換器 (DAC) 提供電流和電壓輸出。DAC8771 的高度整合與 LM25180 一次側穩壓返馳式轉換器耦合，實現了電路板尺寸為 52-mm × 40-mm、最大零組件高度為 4mm 的精巧隔離式設計。此外，此設計採用外部電路，可針對電磁干擾 (EMI) 和電磁相容性 (EMC) 提供暫態保護。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGZ) | 48 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。