DAC108S085CIMT/NO.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

• Daisy Chain Capability

• Power-on Reset to 0V

• Simultaneous Output Updating

• Individual Channel Power Down Capability

• Wide power supply range (+2.7V to +5.5V)

• Dual Reference Voltages with Range of 0.5V to

VA

• Operating Temperature Range of −40°C to

+125°C

• Industry's Smallest Package

APPLICATIONS

• Battery-Powered Instruments

• Digital Gain and Offset Adjustment

• Programmable Voltage & Current Sources

• Programmable Attenuators

• Voltage Reference for ADCs

• Sensor Supply Voltage

• Range Detectors

KEY SPECIFICATIONS

• Resolution: 10 Bits

• INL: ±2 LSB (Max)

• DNL: +0.35/-0.2 LSB (Max)

• Settling Time: 6 μs (Max)

• Zero Code Error : +15mV (Max)

• Full-Scale Error: -0.75% FSR (Max)

• Supply Power

– Normal: 1.95 mW (3V)/4,85 mW (5V) (Typ)

– Power Down: 0.3 μW (3V)/1 W (5V) (Typ)

DESCRIPTION

The DAC108S085 is a full-featured, general purpose

OCTAL 10-bit voltage-output digital-to-analog

converter (DAC) that can operate from a single +2.7V

to +5.5V supply and consumes 1.95 mW at 3V and

4.85 mW at 5V. The DAC108S085 is packaged in a

16-lead WQFN package and a 16-lead TSSOP package. The WQFN package makes the

DAC108S085 the smallest OCTAL DAC in its class.

The on-chip output amplifiers allow 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 DAC108S085 also offers daisy chain operation where an unlimited number of

DAC108S085s can be updated simultaneously using

a single serial interface.

There are two references for the DAC108S085. One

reference input serves channels A through D while

the other reference serves channels E through H.

Each reference can be set independently between

0.5V and VA, providing the widest possible output

dynamic range. The DAC108S085 has a 16-bit input

shift register that controls the mode of operation, the

power-down condition, and the DAC channels' register/output value. All eight DAC outputs can be

updated simultaneously or individually.

A power-on reset circuit ensures that the DAC

outputs power up to zero volts and remain there until

there is a valid write to the device. The power-down

feature of the DAC108S085 allows each DAC to be

independently powered with three different termination options. With all the DAC channels

powered down, power consumption reduces to less

than 0.3 μW at 3V and less than 1 μW at 5V. The low

power consumption and small packages of the

DAC108S085 make it an excellent choice for use in

battery operated equipment.