DAC121C085
- Ensured Monotonicity to 12-Bits
- Low Power Operation: 156-µA Maximum at 3.3 V
- Extended Power Supply Range (2.7 V to 5.5 V)
- I2C-Compatible 2-Wire Interface Which Supports Standard (100-kHz), Fast (400-kHz), and High-Speed (3.4-MHz) Modes
- Rail-to-Rail Voltage Output
- Very Small Package
- Resolution: 12 bits
- INL: ±8 LSB (Maximum)
- DNL: 0.6 / –0.5 LSB (Maximum)
- Settling Time: 8.5 µs (Maximum)
- Zero Code Error: 10 mV (Maximum)
- Full-Scale Error: −0.7%FS (Maximum)
- Supply Power
- Normal: 380 µW (3 V) / 730 µW (5 V) (Typical)
- Power Down: 0.5 µW (3 V) / 0.9 µW (5 V) (Typical)
The DAC121C081 is a 12-bit, single-channel, voltage-output digital-to-analog converter (DAC) that operates from a 2.7-V to 5.5-V supply. The output amplifier allows rail-to-rail output swing and has an 8.5-µs settling time. The DAC121C081 uses the supply voltage as the reference to provide the widest dynamic output range, and typically consumes 132 µA while operating at 5 V. It is available in 6-pin SOT and WSON packages, and provides three address options (pin selectable).
As an alternative, the DAC121C085 provides nine I2C addressing options and uses an external reference. It has the same performance and settling time as the DAC121C081, and is available in an 8-lead VSSOP.
The DAC121C081 and DAC121C085 use a 2-wire, I2C-compatible serial interface that operates in all three speed modes, including high-speed mode (3.4 MHz). An external address selection pin allows up to three DAC121C081 or nine DAC121C085 devices per 2-wire bus. Pin compatible alternatives to the DAC121C081 are available that provide additional address options.
The DAC121C081 and DAC121C085 each have a 16-bit register that controls the mode of operation, the power-down condition, and the output voltage. A power-on reset circuit ensures that the DAC output powers up to 0 V. A power-down feature reduces power consumption to less than a microWatt. Their low power consumption and small packages make these DACs an excellent choice for use in battery-operated equipment. Each DAC operates over the extended industrial temperature range of −40°C to +125°C.
The DAC121C081 and DAC121C085 are each part of a family of pin compatible DACs that also provide 8 and 10 bit resolution. For 8-bit DACs see the DAC081C081 and DAC081C085. For 10-bit DACs see the DAC101C081 and DAC101C085.
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 | DAC121C081 and DAC121C085 12-Bit Micro Power Digital-to-Analog Converter With an I2C-Compatible Interface datasheet (Rev. F) | PDF | HTML | 2016/10/3 | ||
| 應用說明 | A Basic Guide to I2C | PDF | HTML | 2022/11/8 | |||
| 應用說明 | AN-2001 Daisy Chaining Precision DACs (Rev. A) | 2013/5/1 | ||||
| 使用指南 | 8/10/12-Bit Micro Power D/A Converter with I2C Interface Eval Bd User Guide | 2012/1/25 |
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)。
DAC121C085EVM — DAC121C085 評估模組
DAC121C085EVM 是 DAC121C085 的展示套件，這是一款 12 位元，單通道，8.5us 安定時間，2 線介面數位類比轉換器。此 EVM 可讓使用者評估 DAC121C085 資料轉換器的運作與性能。此 EVM 採用小型佈局，可直接連接至 MSP430F5529 LaunchPad 電路板。
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | 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。