概览

优势和特点

  • +2.5 V to +5.5 V Supply Operation
  • 50 MHz Serial Interface
  • 10 MHz Multiplying Bandwidth
  • 2.5 MSPS update rate
  • ±10 V reference input
  • Low glitch energy < 2 nV-s
  • Pin Compatible 8- (AD5426), 10- (AD5432) Current Output DACs
  • Pin Compatible 12-Bit (AD5443) Current Output DACs
  • Guaranteed Monotonic
  • Four Quadrant Multiplication
  • Power On reset with brownout detection
  • Daisy Chain Mode
  • Readback Function
  • 0.4 μA typical power consumption

产品详情

The AD5426/AD5432/AD5443 are CMOS 8-, 10-, and 12-bit current output digital-to-analog converters (DACs), respectively. These devices operate from a 2.5 V to 5.5 V power supply, making them suitable for battery-powered applications and many other applications.

These DACs use a double buffered, 3-wire serial interface that is compatible with SPI, QSPI, MICROWIRE, and most DSP interface standards. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. Data readback allows the user to read the contents of the DAC register via the SDO pin. On power-up, the internal shift register and latches are filled with 0s and the DAC outputs are at zero scale.

As a result of manufacturing on a CMOS submicron process, the parts offer excellent 4-quadrant multiplication characteristics with large signal multiplying bandwidths of 10 MHz. The applied external reference input voltage, VREF, determines the full-scale output current. An integrated feedback resistor, RFB, provides temperature tracking and full-scale voltage output when combined with an external current to voltage precision amplifier.

The AD5426/AD5432/AD5443 DACs are available in small, 10-lead MSOP packages.

The EVAL-AD5443SDZ/EVAL-AD5446SDZ/EVAL-AD5453SDZ evaluation board is available for evaluating DAC performance. For more information, see the UG-327 evaluation board user guide.

APPLICATIONS

  • Portable battery-powered applications
  • Waveform generators
  • Instrumentation
  • Programmable amplifiers and attenuators
  • Digitally controlled calibration
  • Programmable filters and oscillators
  • Composite video
  • Ultrasound
  • Gain, offset, and voltage trimming

产品生命周期 icon-recommended 量产

该产品系列中至少有一个型号已量产并可供采购。该产品适合用于新设计,但也可能有更新的替代产品。

工具及仿真模型

精密DAC误差预算工具

精密DAC误差预算工具是一种Web应用程序,用于计算精密DAC信号链的直流精度。它可显示整个信号链中的静态误差状况,以快速评估设计利弊。可计算由基准电压源、运算放大器和精密DAC引起的直流误差。

Precision DAC Error Budget Tool

设计资源

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PCN-PDN信息

样片申请及购买

电脑版网站提供样片和购买功能
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