DAC122S085CIMMXSLASHNO.A中文资料德州仪器数据手册PDF规格书

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.