1FEATURES
23• Ensured Monotonicity
• Low Power Operation
• Rail-to-Rail Voltage Output
• Power-on Reset to 0V
• Simultaneous Output Updating
• Wide power supply range (+2.7V to +5.5V) to•
Industry's Smallest Package
• Power Down Modes

APPLICATIONS
• Battery-Powered Instruments
• Digital Gain and Offset Adjustment
• Programmable Voltage & Current Sources
• Programmable Attenuators

KEY SPECIFICATIONS
• Resolution: 12 Bits
• INL: ±8 LSB (Max)
• DNL: +0.7 / -0.5
• Settling Time 8.5 μs (Max)
• Zero Code Error: +15 mV (Max)
• Full-Scale Error: -0.75 %FS (Max)
• Supply Power
– Normal: 0.6 mW (3V) / 1.6 mW (5V) (Typ)
– Power Down: 0.3 μW (3V) / 0.8 μW (5V)
(Typ)

DESCRIPTION
The DAC122S085 is a full-featured, general purpose
DUAL 12-bit voltage-output digital-to-analog converter
(DAC) that can operate from a single +2.7V to 5.5V
supply and consumes 0.6 mW at 3V and 1.6 mW at
5V. The DAC122S085 is packaged in 10-lead SON
and VSSOP packages. The 10-lead SON package makes the DAC122S085 the smallest DUAL DAC in
its class. The on-chip output amplifier allows rail-to•
rail output swing and the three wire serial interface
operates at clock rates up to 40 MHz over the entire
supply voltage range. Competitive devices are limited
to 25 MHz clock rates at supply voltages in the 2.7V to 3.6V range. The serial interface is compatible with
standard SPI™, QSPI, MICROWIRE and DSP
interfaces.
The reference for the DAC122S085 serves all four
channels and can vary in voltage between 1V and VA,
providing the widest possible output dynamic range.
The DAC122S085 has a 16-bit input shift register that
controls the outputs to be updated, the mode of
operation, the powerdown condition, and the binary
input data. Both outputs can be updated
simultaneously or individually depending on the
setting of the two mode of operation bits.
A power-on reset circuit ensures that the DAC output
powers up to zero volts and remains there until there
is a valid write to the device. A power-down feature
reduces power consumption to less than a microWatt
with three different termination options.
The low power consumption and small packages of the DAC122S085 make it an excellent choice for use
in battery operated equipment.
The DAC122S085 is one of a family of pin compatible
DACs, including the 8-bit DAC082S085 and the 10-bit
DAC102S085. The DAC122S085 operates over the
extended industrial temperature range of −40°C to
+105°C.