IC DAC 12BIT QUAD R-R 10-MSOP

DAC124S085CIMM/NOPB

Manufacturer Part NumberDAC124S085CIMM/NOPB
DescriptionIC DAC 12BIT QUAD R-R 10-MSOP
ManufacturerNational Semiconductor
SeriesPowerWise®
DAC124S085CIMM/NOPB datasheet
 


Specifications of DAC124S085CIMM/NOPB

Settling Time6µsNumber Of Bits12
Data InterfaceDSP, MICROWIRE™, QSPI™, Serial, SPI™Number Of Converters4
Voltage Supply SourceSingle SupplyOperating Temperature-40°C ~ 105°C
Mounting TypeSurface MountPackage / Case10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Number Of Channels4Resolution12b
Interface TypeSerial (3-Wire, SPI, QSPI, Microwire)Single Supply Voltage (typ)3.3/5V
Dual Supply Voltage (typ)Not RequiredVArchitectureResistor-String
Power Supply RequirementSingleOutput TypeVoltage
Integral Nonlinearity Error±8LSBSingle Supply Voltage (min)2.7V
Single Supply Voltage (max)5.5VDual Supply Voltage (min)Not RequiredV
Dual Supply Voltage (max)Not RequiredVOperating Temp Range-40C to 105C
Operating Temperature ClassificationIndustrialMountingSurface Mount
Pin Count10Package TypeMSOP
For Use WithDAC124S085EB - BOARD EVALUATION DAC124S085Lead Free Status / RoHS StatusLead free / RoHS Compliant
Power Dissipation (max)-Other namesDAC124S085CIMM
DAC124S085CIMMTR
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2.1.2 LM4050
Available with accuracy of 0.44%, the LM4050 shunt refer-
ence is also a good choice as a reference for the
DAC124S085. It is available in 4.096V and 5V versions and
comes in a space-saving 3-pin SOT23.
FIGURE 6. The LM4050 as a power supply
The minimum resistor value in the circuit of Figure 6 must be
chosen such that the maximum current through the LM4050
does not exceed its 15 mA rating. The conditions for maxi-
mum current include the input voltage at its maximum, the
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FIGURE 5. The LM4130 as a power supply
LM4050 voltage at its minimum, and the DAC124S085 draw-
ing zero current. The maximum resistor value must allow the
LM4050 to draw more than its minimum current for regulation
plus the maximum DAC124S085 current in full operation. The
conditions for minimum current include the input voltage at its
minimum, the LM4050 voltage at its maximum, the resistor
value at its maximum due to tolerance, and the DAC124S085
draws its maximum current. These conditions can be sum-
marized as
R(min) = ( V
and
R(max) = ( V
where V
(min) and V
Z
voltages ± the LM4050 output tolerance over temperature, I
(max) is the maximum allowable current through the LM4050,
I
(min) is the minimum current required by the LM4050 for
Z
proper
regulation,
DAC124S085 supply current.
2.1.3 LP3985
The LP3985 is a low noise, ultra low dropout voltage regulator
with a 3% accuracy over temperature. It is a good choice for
applications that do not require a precision reference for the
20173214
DAC124S085. It comes in 3.0V, 3.3V and 5V versions, among
others, and sports a low 30 µV noise specification at low fre-
quencies. Since low frequency noise is relatively difficult to
filter, this specification could be important for some applica-
tions. The LP3985 comes in a space-saving 5-pin SOT23 and
5-bump micro SMD packages.
FIGURE 7. Using the LP3985 regulator
16
20173213
(max) − V
(min) ) /I
(max)
IN
Z
Z
(min) − V
(max) ) / ( (I
(max) + I
(min) )
IN
Z
DAC
Z
(max) are the nominal LM4050 output
Z
and
I
(max)
is
the
maximum
DAC
20173215
Z