AD5504BRUZ Datasheet, PDF (1/20 Pages) Analog Devices – High Voltage, Quad-Channel 12-Bit Voltage Output DAC

Data Sheet
High Voltage, Quad-Channel
12-Bit Voltage Output DAC
AD5504
FEATURES
Quad-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
Simultaneous updating via LDAC
Wide operating temperature: −40°C to +105°C
APPLICATIONS
Programmable voltage sources
High voltage LED drivers
Receiver bias in optical communications
GENERAL DESCRIPTION
The AD5504 is a quad-channel, 12-bit, serial input, digital-to-
analog converter with on-chip high voltage output amplifiers
and an integrated precision reference. The DAC output voltage
ranges are programmable via the range select pin (R_SEL). If
R_SEL is held high, the DAC output ranges are 0 V to 30 V. If
R_SEL is held low, the DAC output ranges are 0 V to 60 V. The
on-chip output amplifiers allow an output swing within the
range of AGND + 0.5 V to VDD − 0.5 V.
The AD5504 has a high speed serial interface, which is com-
patible with SPI®-, QSPI™-, MICROWIRE™-, and DSP-interface
standards and can handle clock speeds of up to 16.667 MHz.
SDI
SDO
SCLK
SYNC
ALARM
CLR R_SEL VLOGIC
FUNCTIONAL BLOCK DIAGRAM
LDAC
REFERENCE
1713kΩ
122.36kΩ
–
INPUT
DAC
REGISTER
REGISTER
DACA
+
12
A
A
12
1713kΩ
INPUT
CONTROL
LOGIC
122.36kΩ
–
INPUT
DAC
REGISTER
REGISTER
DAC B
+
B
B
12
1713kΩ
POWER-ON
RESET
INPUT
REGISTER
C
122.36kΩ
DAC
REGISTER
DAC C
C
12
–
+
1713kΩ
122.36kΩ
–
INPUT
DAC
REGISTER
REGISTER
DAC D
+
D
D
12
V_DD
V_OUTA
V_OUTB
V_OUTC
V_OUTD
AD5504
DGND
Figure 1.
POWER-DOWN
CONTROL LOGIC
TEMPERATURE
SENSOR
AGND
Rev. B
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