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General Description
The MAX5132/MAX5133 low-power, 13-bit, voltage-out-
put digital-to-analog converters (DACs) feature an inter-
nal precision bandgap reference and output amplifier.
The MAX5132 operates on a single +5V supply with an
internal reference of +2.5V and offers a configurable out-
put amplifier. If necessary, the user can override the on-
chip, <10ppm/°C voltage reference with an external
reference. The MAX5133 has the same features as the
MAX5132 but operates from a single +3V supply and
has an internal +1.25V precision reference. The user-
accessible inverting input and output of the amplifier
allows specific gain configurations, remote sensing, and
high output drive capability for a wide range of
force/sense applications. Both devices draw only 500µA
of supply current, which reduces to 3µA in power-down
mode. In addition, their power-up reset feature allows for
a user-selectable initial output state of either 0V or mid-
scale and reduces output glitches during power-up.
The serial interface is compatible with SPI™, QSPI™,
and MICROWIRE™, which makes the MAX5132/
MAX5133 suitable for cascading multiple devices. Each
DAC has a double-buffered input organized as an input
register followed by a DAC register. A 16-bit shift register
loads data into the input register. The DAC register may
be updated independently or simultaneously with the
input register.
Both devices are available in a 16-pin QSOP package
and are specified for the extended-industrial (-40°C to
+85°C) operating temperature range. For pin-compati-
ble 14-bit upgrades, see the MAX5171/MAX5173 data
sheet; for pin-compatible 12-bit versions, see the
MAX5122/MAX5123 data sheet.
Applications
Industrial Process Control
Automatic Test Equipment (ATE)
Digital Offset and Gain Adjustment
Motion Control
Microprocessor-Controlled Systems
Features
♦ Single-Supply Operation
+5V (MAX5132)
+3V (MAX5133)
♦ Built-In 10ppm/°C max Precision Bandgap Reference
+2.5V (MAX5132)
+1.25V (MAX5133)
♦ SPI/QSPI/MICROWIRE-Compatible, 3-Wire Serial
Interface
♦ Pin-Programmable Shutdown-Mode and Power-
Up Reset (0V or Midscale Output Voltage)
♦ Buffered Output Capable of Driving 5kΩ 100pF
or 4–20mA Loads
♦ Space-Saving 16-Pin QSOP Package
♦ Pin-Compatible Upgrades for the 12-Bit
MAX5122/MAX5123
♦ Pin-Compatible 14-Bit Upgrades Available
(MAX5171/MAX5173)
MAX5132/MAX5133
+5V/+3V, 13-Bit, Serial, Force/Sense DACs
with 10ppm/°C Internal Reference
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Maxim Integrated Products
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