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AD5501 Datasheet

High Voltage DAC

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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
APPLICATIONS
Programmable voltage sources
High voltage LED drivers
Receiver bias in optical communications
12-Bit, High Voltage DAC
with SPI Interface
AD5501
GENERAL DESCRIPTION
The AD5501 is a single-channel, 12-bit, serial input, digital-to-
analog 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.
SYNC
SCLK
SDI
SDO
LDAC
ALARM
FUNCTIONAL BLOCK DIAGRAM
VLOGIC
VDD
POWER-ON
RESET
DAC
REGISTER
PRECISION
REFERENCE
122.36kΩ
REF(+)
12-BIT
DAC
1713kΩ
OUTPUT
BUFFER
+
VFB
VOUT
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
TEMPERATURE
SENSOR
RESISTOR
NETWORK
AD5501
CLR R_SEL
DGND
Figure 1.
AGND
Rev. C
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