DAC121C085 - 12-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface and External Reference from the PowerWise® Family
Datasheet Packaging Samples & Pricing Reliability Knowledge Base

Features
Guaranteed Monotonicity to 12-bits
Low Power Operation: 156 µA max @ 3.3V
Extended power supply range (+2.7V to +5.5V)
I 2C-Compatible 2-wire Interface which supports standard (100kHz), fast (400kHz), and high speed (3.4MHz) modes
Rail-to-Rail Voltage Output
Very Small Package

Key Specification


Resolution

12 bits

INL

±8 LSB (max)

DNL

+0.6 / -0.5 LSB (max)

Settling Time

8.5 µs (max)

Zero Code Error

+10 mV (max)

Full-Scale Error

−0.7 %FS (max)

Supply Power

Normal

380 µW (3V) / 730 µW (5V) typ

Power Down

0.5 µW (3V) / 0.9 µW (5V) typ

General Description


The DAC121C081 is a 12-bit, single channel, voltage-output digital-to-analog converter (DAC) that operates from a +2.7V to 5.5V supply. More...


Applications


Industrial Process Control
Portable Instruments
Digital Gain and Offset Adjustment
Programmable Voltage & Current Sources
Test Equipment
  Typical Application
click for larger image

Typical bus configuration

ParametersValues
Resolution 12 bits
Pin and Function Compatible Family None
Channels 1 Channels
Interface Type I2C
Settling Time 8500 ns
INL (LSB) +/-8
DNL (LSB) +0.6, -0.5
Power Down, typ. at 3.6V 0.05 uW
Oper Pwr typ, 3.6V, 30/0.4MHz SPI/I2C 0.48 mW
PowerWise Rating 1 15.94 pJ/conv
Reference Source External
Max Supply Voltage 5.5 Volt
Min Supply Voltage 2.7 Volt
Temperature Min -40 deg C
Temperature Max 125 deg C
OtherSupply Voltage Undefined
Data Converter Type DAC
PowerWise Yes


Typical Performance


click for larger image

INL vs. Code
  Block Diagram
click for larger image

Block Diagram

Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
DAC121C081/ DAC121C085 12-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface 689
Kbytes
13-Mar-08 Download
DAC121C081/ DAC121C085 12-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface (Japanese)
1023 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
DAC121C08XEB12-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible InterfaceFull productionN/A
 
Buy Now
1+$112.001-
8 weeksN/A
DAC121C085CIMMMINI SOIC8NOPB
STD
1
1
260
260
RoHS N/A Full productionN/A
Samples
Buy Now
1K+$1.15reel
of
1000
XTT
X90C
6 weeks1000
DAC121C085CIMMXMINI SOIC8NOPB
STD
1
1
260
260
RoHS N/A Full productionN/A
 
Buy Now
1K+$1.15reel
of
3500
XTT
X90C
6 weeksN/A

General Description


The DAC121C081 is a 12-bit, single channel, voltage-output digital-to-analog converter (DAC) that operates from a +2.7V to 5.5V supply. The output amplifier allows rail-to-rail output swing and has an 8.5µsec settling time. The DAC121C081 uses the supply voltage as the reference to provide the widest dynamic output range and typically consumes 132µA while operating at 5.0V. It is available in 6-lead TSOT and LLP packages and provides three address options (pin selectable).

As an alternative, the DAC121C085 provides nine I 2C addressing options and uses an external reference. It has the same performance and settling time as the DAC121C081. It is available in an 8-lead MSOP.

The DAC121C081 and DAC121C085 use a 2-wire, I 2C-compatible serial interface that operates in all three speed modes, including high speed mode (3.4MHz). An external address selection pin allows up to three DAC121C081 or nine DAC121C085 devices per 2-wire bus. Pin compatible alternatives to the DAC121C081 are available that provide additional address options.

The DAC121C081 and DAC121C085 each have a 16-bit register that controls the mode of operation, the power-down condition, and the output voltage. A power-on reset circuit ensures that the DAC output powers up to zero volts. A power-down feature reduces power consumption to less than a microWatt. Their low power consumption and small packages make these DACs an excellent choice for use in battery operated equipment. Each DAC operates over the extended industrial temperature range of −40°C to +125°C.

The DAC121C081 and DAC121C085 are each part of a family of pin compatible DACs that also provide 8 and 10 bit resolution. For 8-bit DACs see the DAC081C081 and DAC081C085. For 10-bit DACs see the DAC101C081 and DAC101C085.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
DAC121C085CIMMCMOS70184060010890004309006723
DAC121C085CIMMXCMOS70184060010890004309006723

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


[Information as of 7-Nov-2009]