Specifications

18 Maxim Industrial Solutions
Programmable logic controllers (PLCs)
Analog output functions
Benefits
• Enhance reliability
– Outputs are protected against over-
current conditions
– Outputs are protected against a short to
ground or supply voltages up to ±35V
• Ease equipment installation and
improve diagnostics
– 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
The MAX15500/MAX15501 analog output conditioners provide a
programmable current up to ±24mA, or a voltage up to ±12V propor-
tional 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.
Enhance system safety and reliability with an output conditioner
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.