DAC8728
- Bipolar Output: ±3V, up to ±16.5V
- Unipolar Output: 0V to +33V
- 16-Bit Resolution
- Low Power: 13.5mW/Ch
- Relative Accuracy: 4 LSB Max
- Flexible User Calibration
- Low Zero/Full-Scale Error
- Before User Calibration: ±10 LSB Max
- After User Calibration: ±1 LSB
- Low Glitch: 4nV-s
- Settling Time: 15µs
- Channel Monitor Output
- Programmable Gain: x4, x6
- Programmable Offset
- 16-Bit Parallel Interface: 50MHz (Write Operation)
- Packages: QFN-56 (8mm x 8mm), TQFP-64 (10mm x 10mm)
- APPLICATIONS
- Automatic Test Equipment
- PLC and Industrial Process Control
- Communications
The DAC8728 is a low-power, octal, 16-bit digital-to-analog converter (DAC). With a 5V reference, the output can either be a bipolar ±15V voltage when operating from a dual ±15.5V (or higher) power supply, or a unipolar 0V to +30V voltage when operating from a +30.5V power supply. With a 5.5V reference, the output can either be a ±16.5V for a dual ±17V (or higher) power supply, or a unipolar 0V to +33V voltage when operating from a +33.5V (or higher) power supply. This DAC provides low-power operation, good linearity, and low glitch over the specified temperature range of –40°C to +105°C. This device is trimmed in manufacturing and has very low zero and full-scale error. In addition, user calibration can be performed to achieve ±1 LSB bipolar zero/full-scale error for a bipolar supply, or ±1 LSB zero-code/full-scale error for a unipolar supply over the entire signal chain. The output range can be offset by using the DAC Offset Register.
The DAC8728 features a standard, high-speed, 16-bit parallel interface that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to communicate with a DSP or microprocessor. The eight DACs and the auxiliary registers are addressed with five address lines. The device features double-buffered interface logic. An asynchronous load input (LDAC) transfers data from the DAC data register to the DAC latch. The asynchronous CLR input sets the output of all eight DACs to AGND. The VMON pin is a monitor output that connects to the individual analog outputs, the offset DAC, and the reference buffer outputs through a multiplexer (mux).
The DAC8728 is pin-to-pin compatible with the DAC8228 (14-bit) and the DAC7728 (12-bit).
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 | Octal, 16-bit, Low-Power, High-Voltage Output, Parallel Input D/A Converter datasheet (Rev. A) | 2009/11/24 |
設計與開發
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DAC8728EVM — DAC8728 評估模組
The DAC8728EVM is a full-featured evaluation board that features the DAC8728 device. The DAC8728 is a low-power, octal, ±15V output, parallel input, 16-bit digital-to-analog converter (DAC). This evaluation module (EVM) allows evaluation of all aspects of the DAC8728 and gives control over (...)
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 |
|---|---|---|
| TQFP (PAG) | 64 | Ultra Librarian |
| VQFN (RTQ) | 56 | 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。