双12位高带宽乘法DAC用四象限电阻和串行接口ad5415数据表

　　The AD54151 is a CMOS， 12-bit， dual-channel， current output digital-to-analog converter （DAC）。 This device operates from a 2.5 V to 5.5 V power supply， making it suited to battery-powered applications and other applications. As a result of being manufactured on a CMOS submicron process， this device offers 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. In addition， this device contains the 4-quadrant resistors necessary for bipolar operation and other configuration modes. This DAC uses 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 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. The AD5415 DAC is available in a 24-lead TSSOP package. The EV-AD5415/49SDZ evaluation board is available for evaluating DAC performance. For more information，see UG-296， Evaluating the AD5415 Serial Input， Dual-Channel Current Output DAC.