AD5501

Data Sheet FEATURES Single-channel high voltage DAC 12-bit resolution Pin-selectable 30 V or 60 V output range Integrated precision reference Low power serial interface with readback capability Integrated temperature sensor alarm function Power-on reset Wide operating temperature range: −40°C to +105°C 12-Bit, High Voltage DAC with SPI Interface AD5501 GENERAL DESCRIPTION The AD5501 is a single-channel, 12-bit, serial input, digital-toanalog converter (DAC) with an on-chip high voltage output amplifier and an integrated precision reference. The DAC output voltage range is programmable via the range select pin (R_SEL). If R_SEL is held high, the DAC output range is 0 V to 30 V. If R_SEL is held low, the DAC output range is 0 V to 60 V. The on chip output amplifier allows an output swing within the range of AGND + 0.5 V to VDD − 0.5 V. The AD5501 has a high speed serial interface, which is compatible with SPI®-, QSPI™-, MICROWIRE™-, and DSP-interface standards and can handle clock speeds of up to 16.667 MHz. APPLICATIONS Programmable voltage sources High voltage LED drivers Receiver bias in optical communications FUNCTIONAL BLOCK DIAGRAM VLOGIC VDD POWER-ON RESET PRECISION REFERENCE 122.36kΩ 1713kΩ OUTPUT BUFFER VFB DAC REGISTER REF(+) 12-BIT DAC – + VOUT SYNC SCLK SDI SDO LDAC ALARM TEMPERATURE SENSOR INPUT CONTROL LOGIC POWER-DOWN CONTROL LOGIC RESISTOR NETWORK AD5501 CLR R_SEL DGND AGND Figure 1. Rev. C Document Feedback One Technology Way, P.O. Box 9106,...