DAC108S085 Digital-to-Analog Converter Datasheet

DAC108S085 Datasheet, PDF, Equivalent


Part Number

DAC108S085

Description

10-Bit Micro Power OCTAL Digital-to-Analog Converter

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download DAC108S085 Datasheet


DAC108S085
DAC108S085
www.ti.com
SNAS423B – AUGUST 2007 – REVISED MARCH 2013
DAC108S085 10-Bit Micro Power OCTAL Digital-to-Analog Converter with Rail-to-Rail
Outputs
Check for Samples: DAC108S085
FEATURES
1
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.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
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

DAC108S085
DAC108S085
SNAS423B – AUGUST 2007 – REVISED MARCH 2013
www.ti.com
DESCRIPTION (CONTINUED)
The DAC108S085 is one of a family of pin compatible DACs, including the 8-bit DAC088S085 and the 12-bit
DAC128S085. All three parts are offered with the same pinout, allowing system designers to select a resolution
appropriate for their application without redesigning their printed circuit board. The DAC108S085 operates over
the extended industrial temperature range of 40°C to +125°C.
Block Diagram
VREF1
REF
10 BIT DAC
10
DAC108S085
BUFFER
VOUTA
POWER-ON
RESET
DAC
REGISTER
REF
10 BIT DAC
10
REF
10 BIT DAC
10
REF
10 BIT DAC
10
REF
10 BIT DAC
10
REF
10 BIT DAC
10
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
2.5k
100k
VOUTB
2.5k
100k
VOUTC
2.5k
100k
VOUTD
2.5k
100k
VOUTE
2.5k
100k
VOUTF
10
INPUT
CONTROL
LOGIC
REF
10 BIT DAC
10
BUFFER
2.5k
100k
VOUTG
REF
10 BIT DAC
10
BUFFER
2.5k
100k
VOUTH
POWER-DOWN
CONTROL
LOGIC
2.5k 100k
DOUT SYNC SCLK
DIN
VREF2
2 Submit Documentation Feedback
Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: DAC108S085


Features DAC108S085 www.ti.com SNAS423B – AUG UST 2007 – REVISED MARCH 2013 DAC108 S085 10-Bit Micro Power OCTAL Digital-t o-Analog Converter with Rail-to-Rail Ou tputs Check for Samples: DAC108S085 FE ATURES 1 •23 Ensured Monotonicity • Low Power Operation • Rail-to-Rail V oltage Output • Daisy Chain Capabilit y • Power-on Reset to 0V • Simultan eous Output Updating • Individual Cha nnel Power Down Capability • Wide pow er supply range (+2.7V to +5.5V) • Du al Reference Voltages with Range of 0.5 V to VA • Operating Temperature Range of −40°C to +125°C • Industry's Smallest Package APPLICATIONS • Batte ry-Powered Instruments • Digital Gain and Offset Adjustment • Programmable Voltage & Current Sources • Programm able Attenuators • Voltage Reference for ADCs • Sensor Supply Voltage • Range Detectors KEY SPECIFICATIONS • Resolution: 10 Bits • INL: ±2 LSB (M ax) • DNL: +0.35/-0.2 LSB (Max) • S ettling Time: 6 µs (Max) • Zero Code Error : +15mV (Max) • Full-Scale Error: -0.75% FSR (Max) • Supply Power – Norma.
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