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PDF DAC121S101Q Data sheet ( Hoja de datos )

Número de pieza DAC121S101Q
Descripción RRO Digital-to-Analog Converter
Fabricantes National Semiconductor 
Logotipo National Semiconductor Logotipo



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No Preview Available ! DAC121S101Q Hoja de datos, Descripción, Manual

DAC121S101/DAC121S101Q
February 19, 2010
www.DataSheet4U.com
12-Bit Micro Power, RRO Digital-to-Analog Converter
General Description
The DAC121S101 is a full-featured, general purpose 12-bit
voltage-output digital-to-analog converter (DAC) that can op-
erate from a single +2.7V to 5.5V supply and consumes just
177 µA of current at 3.6 Volts. The on-chip output amplifier
allows rail-to-rail output swing and the three wire serial inter-
face operates at clock rates up to 30 MHz over the specified
supply voltage range and is compatible with standard SPI,
QSPI, MICROWIRE and DSP interfaces. Competitive de-
vices are limited to 20 MHz clock rates at supply voltages in
the 2.7V to 3.6V range.
The supply voltage for the DAC121S101 serves as its voltage
reference, providing the widest possible output dynamic
range. 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.
The low power consumption and small packages of the
DAC121S101 make it an excellent choice for use in battery
operated equipment.
The DAC121S101 is a direct replacement for the AD5320 and
the DAC7512 and is one of a family of pin compatible DACs,
including the 8-bit DAC081S101 and the 10-bit DAC101S101.
The DAC121S101 operates over the extended industrial tem-
perature range of −40°C to +105°C while the DAC121S101Q
operates over the Grade 1 automotive temperature range of
−40°C to +125°C. The DAC121S101 is available in a 6-lead
TSOT and an 8-lead MSOP and the DAC121S101Q is avail-
able in the 6-lead TSOT only.
Features
DAC121S101Q is AEC-Q100 Grade 1 qualified and is
manufactured on an Automotive Grade Flow.
Guaranteed Monotonicity
Low Power Operation
Rail-to-Rail Voltage Output
Power-on Reset to Zero Volts Output
Wide Temperature Range of −40°C to +125°C
Wide Power Supply Range of +2.7V to +5.5V
Small Packages
Power Down Feature
Key Specifications
Resolution
12 bits
DNL
+0.25, -0.15 LSB (typ)
Output Settling Time
8 µs (typ)
Zero Code Error
4 mV (typ)
Full-Scale Error
−0.06 %FS (typ)
Power Consumption
Normal Mode 0.64mW (3.6V) / 1.43mW (5.5V) typ
Pwr Down Mode 0.14µW (3.6V) / 0.39µW (5.5V) typ
Applications
Battery-Powered Instruments
Digital Gain and Offset Adjustment
Programmable Voltage & Current Sources
Programmable Attenuators
Automotive
Pin Configuration
20114901
20114902
SPIis a trademark of Motorola, Inc.
© 2010 National Semiconductor Corporation
201149
www.national.com

1 page




DAC121S101Q pdf
A.C. and Timing Characteristics
The following specifications apply for VA = +2.7V to +5.5V, RL = 2kto GND, CL = 200 pF to GND, fSCLK = 30 MHz,winwpuwt.cDoadteaSheet4U.com
range 48 to 4047. Boldface limits apply for TMIN TA TMAX: all other limits TA = 25°C, unless otherwise specified.
Symbol
Parameter
Conductions
Typical
Limits
Units
(Limits)
fSCLK
SCLK Frequency
ts
Output Voltage Settling Time
(Note 10)
SR Output Slew Rate
400h to C00h code
change, RL = 2k
00Fh to FF0h code
change, RL = 2k
CL 200 pF
CL = 500 pF
CL 200 pF
CL = 500 pF
8
12
8
12
1
30 MHz (max)
10 µs (max)
µs
µs
µs
V/µs
Glitch Impulse
Code change from 800h to 7FFh
12
nV-sec
Digital Feedthrough
0.5 nV-sec
tWU
1/fSCLK
tH
tL
tSUCL
Wake-Up Time
SCLK Cycle Time
SCLK High time
SCLK Low Time
Set-up Time SYNC to SCLK Rising
Edge
VA = 5V
VA = 3V
6 µs
39 µs
33 ns (min)
5 13 ns (min)
5 13 ns (min)
−15 0 ns (min)
tSUD
tDHD
tCS
tSYNC
Data Set-Up Time
Data Hold Time
SCLK fall to rise of SYNC
SYNC High Time
VA = 5V
VA = 3V
2.7 VA 3.6
3.6 VA 5.5
2.5 5 ns (min)
2.5 4.5 ns (min)
0 3 ns (min)
−2 1 ns (min)
9 20 ns (min)
5 10 ns (min)
5 www.national.com

5 Page





DAC121S101Q arduino
3V INL vs. Temperature
5V INL vs. Temperature
www.DataSheet4U.com
Zero Code Error vs. fSCLK
20114932
20114933
Zero Code Error vs. Clock Duty Cycle
20114934
Zero Code Error vs. Temperature
Full-Scale Error vs. fSCLK
20114935
20114936
11
20114937
www.national.com

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