Specifications

www.digikey.com/maxim-industrial 17
Programmable logic controllers (PLCs)
Analog output functions
Benefits
• Flexible upgrade path
– 2-/4-channel, 16-/12-bit DACs are pin
and software compatible
• Save cost and board space
– Parts accept an SPI/QSPI™-/
MICROWIRE™-/DSP-compatible
serial interface
– 4mm x 4mm package
– A READY output enables easy daisy-
chaining of several MAX5134–MAX5137
and other compatible devices
– Double-buffered hardware and software
LDAC provides simultaneous output
updates
• Improve safety
– Hardware input for resetting the
DAC outputs to zero or midscale on
power-up or reset
MAX5134/MAX5135/MAX5136/MAX5137
The MAX5134–MAX5137 are pin- and software-compatible, 16-bit
and 12-bit DACs offering low power, buffered voltage output, and
high linearity. They use a precision internal reference or a precision
external reference for rail-to-rail operation. The MAX5134–MAX5137
accept a wide 2.7V to 5.25V supply-voltage range to accommodate
most low-power and low-voltage applications.
System flexibility and reduced cost with multichannel DACs
Block diagram of the MAX5134–MAX5137 DACs.
MAX5134/MAX5136
MAX5135/MAX5137
16-/12-BIT
16-/12-BIT
16-/12-BIT
16-/12-BIT
IN OUT
INTERNAL
REFERENCE
DOUBLE-
BUFFERED
REGISTERS
SPI
INTERFACE
CS
SCLK
DV
DD
M/ZAV
DD
OUT_4
OUT_3
OUT_2
OUT_1
DIN
RDY
LDAC
Integrated precision
reference (10ppm/°C)
RDY pin to facilitate
daisy-chaining
Asynchronous LDAC pin
to simultaneously
update all outputs
Selectable pin to power
up to zero or midscale