DAC811中文资料具有并行接口的 12 位数模转换器数据手册TI规格书

描述 Description

The DAC811 is a complete, single-chip integrated-circuit, microprocessor-compatible, 12-bit digital-to-analog converter. The chip combines a precision voltage reference, microcomputer interface logic, and double-buffered latch, in a 12-bit D/A converter with a voltage output amplifier. Fast current switches and a laser-trimmed thin-film resistor network provide a highly accurate and fast D/A converter.
Microcomputer interfacing is facilitated by a double-buffered latch. The input latch is divided into three 4-bit nibbles to permit interfacing to 4-, 8-, 12-, or 16-bit buses and to handle right-or left-justified data. The 12-bit data in the input latches is transferred to the D/A latch to hold the output value.
Input gating logic is designed so that loading the last nibble or byte of data can be accomplished simultaneously with the transfer of data (previously stored in adjacent latches) from adjacent input latches to the D/A latch. This feature avoids spurious analog output values while using an interface technique that saves computer instructions.
The DAC811 is laser trimmed at the wafer level and is specified to ±1/4LSB maximum linearity error (B, K, and S grades) at 25°C and °1/2LSB maximum over the temperature range. All grades are guaranteed monotonic over the specification temperature range.
The DAC811 is available in six performance grades and three package types. DAC811J and K are specified over the temperature ranges of 0°C to +70°C; DAC811A and B are specified over –25°C to +85°C; DAC811R and S are specified over –55°C to +125°C. DAC811J and K are packaged in a reliable 28-pin plastic DIP or plastic SO package, while DAC811A and B are available in a 28-pin 0.6\" wide dual-inline hermetically sealed ceramic side-brazed package (H package).

特性 Features

• SINGLE INTEGRATED CIRCUIT CHIP
• MICROCOMPUTER INTERFACE: DOUBLE-BUFFERED LATCH
• VOLTAGE OUTPUT: ±10V, ±5V, +10V
• MONOTONICITY GUARANTEED OVER TEMPERATURE
• ±1/2LSB MAXIMUM NONLINEARITY OVER TEMPERATURE
• GUARANTEED SPECIFICATIONS AT ±12V AND ±15V SUPPLIES
• TTL/5V CMOS-COMPATIBLE LOGIC INPUTS

简介

DAC811属于集成电路（IC）的数模转换器（DAC）。由TI制造生产的DAC811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。