Specifications

20 Maxim Industrial Solutions
Programmable logic controllers (PLCs)
Analog output functions
Benefits
• Easily drive 24V 4–20mA lines
throughout factory floors
– High supply-voltage operation and
high-output drive exceed current-mode
communication requirements
MAX9943/MAX9944
The MAX9943/MAX9944 are high-voltage amplifiers (6V to 38V) that
offer precision (100µV
OS
), low drift (0.4µV/°C), and low 550µA power
consumption. The devices are ideal for sensor signal conditioning,
high-performance industrial instrumentation, and loop-powered
systems (e.g., 4mA–20mA transmitters).
Improve system accuracy for high-voltage applications in a harsh environment with
high-precision output conditioners and drivers
The MAX9944 accurately drives loads.
-18V
R
SENSE
R
LOAD
V
REF
+18V
1/2
1/2
MAX9944
MAX9944
Wide 6V to
38V supply
voltage
High 25mA output
current to drive
4–20mA loop-powered
systems
Stable with up to
1nF capacitive load
Low 550μA quiescent
current helps reduce
static system power
dissipation
Low 100μV (max)
input voltage offset V
OS