AD5551

a FEATURES Full 14-Bit Performance 5 V Single Supply Operation Low Power Fast Settling Time Unbuffered Voltage Output Capable of Driving 60 k ⍀ Loads Directly SPI™/QSPI™/MICROWIRE™-Compatible Interface Standards Power-On Reset Clears DAC Output to 0 V (Unipolar Mode) Schmitt Trigger Inputs for Direct Optocoupler Interface APPLICATIONS Digital Gain and Offset Adjustment Automatic Test Equipment Data Acquisition Systems Industrial Process Control 5 V, Serial-Input Voltage-Output, 14-Bit DACs AD5551/AD5552 FUNCTIONAL BLOCK DIAGRAMS VDD AD5551 VREF 14-BIT DAC VOUT AGND CS DIN SCLK CONTROL LOGIC SERIAL INPUT REGISTER 14-BIT DATA LATCH DGND VDD AD5552 RINV VREFF 14-BIT DAC RFB RFB INV VOUT AGNDF GENERAL DESCRIPTION VREFS CS LDAC SCLK DIN CONTROL LOGIC SERIAL INPUT REGISTER The AD5551 and AD5552 are single, 14-bit, serial input, voltage output DACs that operate from a single 5 V ± 10% supply. The AD5551 and AD5552 utilize a versatile 3-wire interface that is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. These DACs provide 14-bit performance without any adjustments. The DAC output is unbuffered, which reduces power consumption and offset errors contributed by an output buffer. With an external op amp the AD5552 can be operated in bipolar mode generating a ± VREF output swing. The AD5552 also includes Kelvin sense connections for the reference and analog ground pins to reduce layout sensitivity. For higher precision applications, please refer to 16-bit ...