Specifications

16 Control and Automation Solutions Guide
Enhance System Safety and Reliability with an
Output Conditioner
MAX15500/MAX15501
The MAX15500/MAX15501 analog output conditioners provide a programmable
current up to ±24mA, or a voltage up to ±12V proportional to a control voltage signal.
The control voltage is typically supplied by an external DAC with an output voltage
range of 0 to 4.096V (MAX15500) and 0 to 2.5V (MAX15501). The output current
and voltage are selectable as either unipolar or bipolar. The MAX15500/MAX15501
are programmed through an SPI interface capable of daisy-chained operation.
Benefits
• Enhance robustness
◦ Outputs are protected against
overcurrent conditions
◦ Outputs are protected against a
short to ground or supply voltages
up to ±35V
• Provide high flexibility and improved
diagnostics to enhance reliability
◦ Output current and voltage are
selectable as unipolar or bipolar
◦ Monitor for overtemperature and
supply brownout conditions with
programmable threshold
◦ Extensive error reporting through
the SPI interface and an additional
open-drain interrupt output
◦ Analog output to monitor load
conditions
MAX15500
MAX15501
BIDIRECTIONAL
CURRENT
DRIVER
BIDIRECTIONAL
CURRENT
DRIVER
AVDDOAVDD
Save one
digital isolator
per channel
with new easy
daisy-chain
DVDD
FSMODE FSSEL AVSS AVSSO AGND DGND
SCLK
DIN
DOUT
CS1
CS2
READY
AIN
ERROR
MON
REFIN
OUTDIS
ERROR
HANDLING
SPI
INTERFACE
ERROR
HANDLING
OVERCURRENT
PROTECTION
SENSERN
Current-mode
open
Special
intermittent
cable conditions
SAFETY MONITORING
Voltage-mode
short
Internal
overtemperature
Supply brownout
w/adj threshold
Output mirror enables
external dynamic
load monitoring
SENSERP
COMP
OUT
SENSEVP
SENSEVN
Block diagram of the MAX15500/MAX15501.