DAC8803中文资料14 位四通道串行接口乘法数模转换器数据手册TI规格书

描述 Description

The DAC8803 is a quad, 14-bit, current-output digital-to-analog converter (DAC) designed to operate from a single +2.7-V to 5-V supply.
The applied external reference input voltage VREF determines the full-scale output current. An internal feedback resistor (RFB) provides temperature tracking for the full-scale output when combined with an external I-to-V precision amplifier.
A doubled buffered serial data interface offers high-speed, 3-wire, SPI and microcontroller compatible inputs using serial data in (SDI), clock (CLK), and a chip select (CS). In addition, a serial data out pin (SDO) allows for daisy chaining when multiple packages are used. A common level-sensitive load DAC strobe (LDAC) input allows simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to zero at system turn on. An MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1.
The DAC8803 is packaged in an SSOP package.

特性 Features

• Relative Accuracy: 1 LSB Max
• 2-mA Full-Scale Current with VREF = ±10 V
• Midscale or Zero-Scale Reset
• Reference Bandwidth: 10 MHz
• SPI™-Compatible 3-Wire Interface: 50-MHz
• Simultaneous Multichannel Update
• Compact SSOP-28 Package
• APPLICATIONS
• Instrumentation
• Digitally-Controlled Calibration
SPI is a trademark of Motorola, Inc.

简介

DAC8803属于集成电路（IC）的数模转换器（DAC）。由TI制造生产的DAC8803数模转换器（DAC）数模转换器（DAC、D/A、D2A 或 D 转 A）可将数字信号转换为缓冲或无缓冲的模拟电压或电流。DAC 架构是否适合特定应用，要取决于分辨率和采样频率。DAC 通常用于音乐播放器，将数字数据流转换为模拟音频流。它们还用于电视和手机，将数字视频数据转换为模拟视频信号，再连接到屏幕驱动器，以显示单色或彩色图像。