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Features
| | Guaranteed 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) |
| | Industry's Smallest Package |
| | Power Down Modes |
Description The DAC124S085 is a full-featured, general purpose QUAD 12-bit voltage-output digital-to-analog converter (DAC) that can operate
from a single +2.7V to 5.5V supply and consumes 1.1 mW at 3V and 2.4 mW at 5V. The DAC124S085 is packaged in 10-lead LLP and
MSOP packages. The 10-lead LLP package makes the DAC124S085 the smallest QUAD 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 DAC124S085 serves all four channels and can vary in voltage between 1V and VA, providing the widest possible output dynamic range. The DAC124S085 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. All four 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 DAC124S085 make it an excellent choice for use in battery operated equipment.
The DAC124S085 is one of a family of pin compatible DACs, including the 8-bit DAC084S085 and the 10-bit DAC104S085. The DAC124S085
operates over the extended industrial temperature range of −40°C to +105°C.
Key Specification
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Resolution
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12 bits
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INL
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±8 LSB (max)
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DNL
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+0.7 / −0.5 LSB (max)
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Settling Time
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8.5 µs (max)
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Zero Code Error
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+15 mV (max)
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Full-Scale Error
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−0.75 %FS (max)
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Supply Power
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Normal
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1.1 mW (3V) / 2.4 mW (5V) typ
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Power Down
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0.3 µW (3V) / 0.8 µW (5V) typ
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Applications
| | Battery-Powered Instruments |
| | Digital Gain and Offset Adjustment |
| | Programmable Voltage & Current Sources |
| | Programmable Attenuators |
|
|
| Paramaters / Values | DAC124S085 | DAC084S085 | DAC104S085 | DAC121S101 | DAC122S085 | DAC128S085 |
| Resolution | 12 bits
| 8 bits
| 10 bits
| 12 bits
| 12 bits
| 12 bits
|
| Pin and Function Compatible Family | 2/4 ch, LLP-10, 2/4 ch, MSOP-10
| 2/4 ch, LLP-10, 2/4 ch, MSOP-10
| 2/4 ch, LLP-10, 2/4 ch, MSOP-10
| None, 1 ch, SOT-6, 1 ch, MSOP-8
| 2/4 ch, LLP-10, 2/4 ch, MSOP-10
| None
|
| Channels | 4 Channels
| 4 Channels
| 4 Channels
| 1 Channels
| 2 Channels
| 8 Channels
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| Interface Type | SPI/Microwire
| SPI / QSPI / Microwire
| SPI/Microwire
| Serial
| SPI/Microwire
| SPI/QSPI/Microwire
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| Settling Time | 8500 ns
| 8500 ns
| 8500 ns
| 8000, 15000 ns
| 8500 ns
| 8000 ns
|
| INL (LSB) | +/-2.4
| +/-0.14
| +/-0.7
| +/-2.6, +/-2.75
| +/-2.4
| +/-8
|
| DNL (LSB) | +2.0, -0.15
| +0.04, -0.02
| +0.08, -0.03
| +0.25, -0.1, +0.21; -0.1
| +2.0, -0.15
| +0.75, -0.4
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| Power Down, typ. at 3.6V | 0.3 uW
| 0.3 uW
| 0.3 uW
| 0.014, 0.14 uW
| 0.3 uW
| 0.3 uW
|
| Oper Pwr typ, 3.6V, 30/0.4MHz SPI/I2C | 1.1 mW
| 1.1 mW
| 1.1 mW
| 0.64, 0.52 mW
| 0.6 mW
| 1.95 mW
|
| PowerWise Rating 1 | 2.74 pJ/conv
| 2.56 pJ/conv
| 3.2 pJ/conv
| 6.5 pJ/conv
| 2.99 pJ/conv
| 7.62 pJ/conv
|
| Reference Source | External
| External
| External
| Supply
| External
| External
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| Max Supply Voltage | 5.5 Volt
| 5.5 Volt
| 5.5 Volt
| 5.5, 2.7 Volt
| 5.5 Volt
| 5.5 Volt
|
| Min Supply Voltage | 2.7 Volt
| 2.7 Volt
| 2.7 Volt
| 5.5, 2.7 Volt
| 2.7 Volt
| 2.7 Volt
|
| Temperature Min | -40 deg C
| -40 deg C
| -40 deg C
| -40, -55 deg C
| -40 deg C
| -40 deg C
|
| Temperature Max | 105 deg C
| 105 deg C
| 105 deg C
| 125, 105 deg C
| 105 deg C
| 125 deg C
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| OtherSupply Voltage | 4.5V to 5.5V
| | 4.5V to 5.5V
| 4.5V to 5.5V, Undefined
| 4.5V to 5.5V
| Undefined
|
| Tsettling Conditions | code change from 100h to 300h
| code change 40h to C0h
| code change from 100h to 300h
| code change 400h to C00h, code change FF0 to 00F
| code change 400h to C00h
| 5.5V
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| Data Converter Type | DAC
| DAC
| DAC
| DAC
| DAC
| DAC
|
| Automotive | Yes
| Yes
| Yes
| No
| Yes
| Yes
|
| PowerWise | Yes
| Yes
| Yes
| Yes
| Yes
| Yes
|
Datasheet
Featured Application Notes
More Application Notes
Part Number(s) (NSID) | Description | Availability | Current Reported Stock | Budgetary Pricing | Standard Pack Size |
DAC124S085EB
| 12-Bit Micro Power QUAD Digital-to-Analog Converter with Rail-to-Rail Output | Full production Lead Free (RoHS)
|
| $120.00 each | 1 |
| Description:
This Design Kit (consisting of an Evaluation Board and this manual) is designed to ease evaluation and design-in of National Semiconductor's DAC124S085 12-bit Digital-to-Analog Converter.
The DAC124S085 features a voltage output with an SPI interface that operates at clock rates up to 40 MHz. The supply voltage can range from +2.7V to +5.5V and consumes just 1.1 mW at 3V and 2.5 mW at 5V. A power-down feature reduces the power consumption to 0.3 uW at 3V and 0.8 uW at 5V. The reference voltage for the DAC124S085 serves all channels and can vary in voltage between 1.0V and VA.
Features:
- Board comes fully assembled and tested
- Choice of board mounted or external reference
- Jumper-selectable load conditions
- Operates from a single (+5V) supply voltage
- Convenient 14-pin header for easy digital programming
Contents:
- Evaluation Board
- Evaluation Board User's Guide
- DAC124S085 Data Sheet
|
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
DAC124S085CIMM | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
DAC124S085CIMMX | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
DAC124S085CISD | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
DAC124S085CISDX | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
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.
| Data Acquisition In Factory Automation |
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| Data Acquisition In Factory Automation Date: 8/24/2009 Length: 0:31:29 |
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