CONV D/A 12BIT MICRO PWR TSOT236

DAC121S101CIMK/NOPB

Manufacturer Part NumberDAC121S101CIMK/NOPB
DescriptionCONV D/A 12BIT MICRO PWR TSOT236
ManufacturerNational Semiconductor
SeriesPowerWise®
DAC121S101CIMK/NOPB datasheet
 


Specifications of DAC121S101CIMK/NOPB

Settling Time12µsNumber Of Bits12
Data InterfaceDSP, MICROWIRE™, QSPI™, Serial, SPI™Number Of Converters1
Voltage Supply SourceSingle SupplyPower Dissipation (max)1.72mW
Operating Temperature-40°C ~ 105°CMounting TypeSurface Mount
Package / CaseTSOT-23-6, TSOT-6Number Of Channels1
Resolution12bInterface TypeSerial (3-Wire, SPI, QSPI, Microwire)
Single Supply Voltage (typ)3.3/5VDual Supply Voltage (typ)Not RequiredV
ArchitectureResistor-StringPower Supply RequirementSingle
Output TypeVoltageIntegral Nonlinearity Error±8LSB
Single Supply Voltage (min)2.7VSingle Supply Voltage (max)5.5V
Dual Supply Voltage (min)Not RequiredVDual Supply Voltage (max)Not RequiredV
Operating Temp Range-40C to 105COperating Temperature ClassificationIndustrial
MountingSurface MountPin Count6
Package TypeTSOTFor Use WithDAC121S101EVAL - BOARD EVALUATION DAC121S101
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther namesDAC121S101CIMK
DAC121S101CIMKTR
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FIGURE 11. Using the LP3985 regulator
Like any low dropout regulator, the LP2980 requires an output
capacitor for loop stability. This output capacitor must be at
least 1.0µF over temperature, but values of 2.2µF or more will
provide even better performance. The ESR of this capacitor
should be within the range specified in the LP2980 data sheet.
Surface-mount solid tantalum capacitors offer a good combi-
nation of small size and ESR. Ceramic capacitors are attrac-
tive due to their small size but generally have ESR values that
are too low for use with the LP2980. Aluminum electrolytic
capacitors are typically not a good choice due to their large
An input capacitance of 1.0µF without any ESR requirement
is required at the LP3985 input, while a 1.0µF ceramic ca-
pacitor with an ESR requirement of 5mΩ to 500mΩ is required
at the output. Careful interpretation and understanding of the
capacitor specification is required to ensure correct device
operation.
2.2.4 LP2980
The LP2980 is an ultra low dropout regulator with a 0.5% or
1.0% accuracy over temperature, depending upon grade. It is
available in 3.0V, 3.3V and 5V versions, among others.
20114915
FIGURE 12. Using the LP2980 regulator
size and have ESR values that may be too high at low tem-
peratures.
2.3 BIPOLAR OPERATION
The DAC121S101 is designed for single supply operation and
thus has a unipolar output. However, a bipolar output may be
obtained with the circuit in
an output voltage range of ±5 Volts. A rail-to-rail amplifier
should be used if the amplifier supplies are limited to ±5V.
FIGURE 13. Bipolar Operation
17
20114916
Figure
13. This circuit will provide
20114917
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