DAC088S085 Datasheet, PDF (1/35 Pages) National Semiconductor (TI) – 8-Bit Micro Power OCTAL Digital-to-Analog Converter with Rail-to-Rail Outputs

DAC088S085
www.ti.com
SNAS424C – AUGUST 2007 – REVISED MARCH 2013
DAC088S085 8-Bit Micro Power OCTAL Digital-to-Analog Converter with Rail-to-Rail
Outputs
Check for Samples: DAC088S085
FEATURES
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•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
V_A
• 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: 8 bits
• INL: ±0.5 LSB (max)
• DNL: +0.15 / −0.1 LSB (max)
• Settling Time: 4.5 µs (max)
• Zero Code Error: +15 mV (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 µW (5V) typ
DESCRIPTION
The DAC088S085 is a full-featured, general purpose
OCTAL 8-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 DAC088S085 is packaged in a
16-lead WQFN package and a 16-lead TSSOP
package. The WQFN package makes the
DAC088S085 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 DAC088S085 also offers daisy chain
operation where an unlimited number of
DAC088S085s can be updated simultaneously using
a single serial interface.
There are two references for the DAC088S085. 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 V_A, providing the widest possible output
dynamic range. The DAC088S085 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 DAC088S085 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
DAC088S085 make it an excellent choice for use in
battery operated equipment.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI is a trademark of Motorola, Inc..
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2013, Texas Instruments Incorporated