MAX518BESA

2线串行8位DAC，具有轨至轨输出 2-Wire Serial 8-Bit DACs with Rail-to-Rail Outputs

General Description

The MAX517/MAX518/MAX519 are 8-bit voltage output digital-to-analog converters DACs with a simple 2-wire serial interface that allows communication between multiple devices. They operate from a single 5V supply and their internal precision buffers allow the DAC outputs to swing rail-to-rail.

The MAX517 is a single DAC and the MAX518/MAX519 are dual DACs. The MAX518 uses the supply voltage as the reference for both DACs. The MAX517 has a reference input for its single DAC and each of the MAX519’s two DACs has its own reference input.

The MAX517/MAX518/MAX519 feature a serial interface and internal software protocol, allowing communication at data rates up to 400kbps. The interface, combined with the double-buffered input configuration, allows the DAC registers of the dual devices to be updated individually or simultaneously. In addition, the devices can be put into a low-power shutdown mode that reduces supply current to 4µA. Power-on reset ensures the DAC outputs are at 0V when power is initially applied.

Features

♦ Single +5V Supply

♦ Simple 2-Wire Serial Interface

♦ I2C Compatible

♦ Output Buffer Amplifiers Swing Rail-to-Rail

♦ Space-Saving 8-pin DIP/SO Packages

   MAX517/MAX518

♦ Reference Input Range Includes Both Supply Rails

   MAX517/MAX519

♦ Power-On Reset Clears All Latches

♦ 4µA Power-Down Mode

Applications

  Minimum Component Analog Systems

  Digital Offset/Gain Adjustment

  Industrial Process Control

  Automatic Test Equipment

  Programmable Attenuators