High Voltage DAC
Data Sheet
FEATURES
Single-channel high voltage DAC 12-bit resolution Pin-selectable 30 V or 60 V output range Integrate...
Description
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
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