DAC8718
- Bipolar Output: ±2V to ±16.5V
- Unipolar Output: 0V to +33V
- 16-Bit Resolution
- Low Power: 14.4mW/Ch (Bipolar Supply)
- Relative Accuracy: 4 LSB Max
- Low Zero/Full-Scale Error
- Before User Calibration: ±10 LSB Max
- After User Calibration: ±1 LSB
- Flexible System Calibration
- Low Glitch: 4nV-s
- Settling Time: 15µs
- Channel Monitor Output
- Programmable Gain: x4/x6
- Programmable Offset
- SPI: Up to 50MHz, 1.8V/3V/5V Logic
- Schmitt Trigger Inputs
- Daisy-Chain with Sleep Mode Enhancement
- Packages: QFN-48 (7x7mm), TQFP-64 (10x10mm)
- APPLICATIONS
- Automatic Test Equipment
- PLC and Industrial Process Control
- Communications
The DAC8718 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 dual ±15.5V (or higher) power supplies, or a unipolar 0V to +30V voltage when operating from a +30.5V (or higher) power supply. With a 5.5V reference, the output can either be a bipolar ±16.5V voltage when operating from dual ±17V (or higher) power supplies, 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-code and gain error. In addition, system level calibration can be performed to achieve ±1 LSB bipolar zero/full-scale error with bipolar supplies, or ±1 LSB zero code/full-scale error with a unipolar supply, over the entire signal chain. The output range can be offset by using the DAC offset register.
The DAC8718 features a standard, high-speed serial peripheral interface (SPI) that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to communicate with a DSP or microprocessor. The input data of the device are double-buffered. 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, the reference buffer outputs, and two external inputs through a multiplexer (mux).
The DAC8718 is pin-to-pin and function-compatible with the DAC8218 (14-bit) and the DAC7718 (12-bit).
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | Octal, 16-bit, low-Power, High-Voltage Output, Serial Input D/A Converter 数据表 (Rev. A) | 2009-12-15 |
设计与开发
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DAC8718EVM — DAC8718 评估模块
The DACxx18EVM features the DAC7718, DAC8218, or DAC8718 digital to analog converter. The EVM provides a quick and easy way to evaluate the functionality and performance of this high resolution serial input Digital to Analog Converter (DAC). The DACxx18EVM is designed to work by default for a (...)
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TQFP (PAG) | 64 | Ultra Librarian |
| VQFN (RGZ) | 48 | Ultra Librarian |
订购和质量
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