1 Features
1• Output Current:
– 0 mA to 24 mA; 3.5 mA to 23.5 mA; 0 mA to
20 mA; 4 mA to 20 mA; ±24 mA
• Output Voltage (with/without 20% over-range):
– 0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V
– 0 V to 6 V; 0 V to 12 V; ±6 V; ±12 V
• Adaptive Power Management
• Single Wide Power Supply Pin (12 V – 36 V )
• ±0.1% FSR Total Unadjusted Error (TUE)
• DNL: ±1 LSB Max
• Internal 5-V Reference (10 ppm/°C max)
• Internal 5-V Digital Power Supply Output
• CRC/Frame Error Check, Watchdog Timer
• Thermal Alarm, Open/Short Circuit for System
Reliability
• Safe Actions on Alarm Condition
• Auto Learn Load Detection
• Wide Temperature Range: –40°C to +125°C

2 Applications
• 4-mA to 20-mA Current Loops
• Analog Output Modules
• Programmable Logic Controllers (PLCs)
• Building Automation
• Sensor Transmitters
• Process Control

3 Description
The DAC8775 is a quad-channel precision, fully
integrated, 16-bit, digital-to-analog converter (DAC)
with adaptive power management, and is designed to
meet the requirements of industrial control
applications. The adaptive power management
circuit, when enabled, minimizes the power
dissipation of the chip. When programmed as a
current output, the supply voltage on the current
output driver is regulated between 4.5 V and 32 V
based on continuous feedback of voltage on the
current output pin via an integrated buck/boost
converter. When programmed as a voltage output,
this circuit generates a programmable supply voltage
for the voltage output stage (±15 V). DAC8775 also
contains an LDO to generate the digital supply (5 V)
from a single power supply pin.
DAC8775 is also implemented with a Highway
Addressable Remote Transducer (HART) Signal
Interface to superimpose an external HART signal on
the current output. The slew rate of the current output
DAC is register programmable. The device can
operate with a single external power supply of +12 V
to +36 V using the integrated buck/boost converters
or with external power supplies when the buck/boost
converters are disabled.