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PDF DAC121S101QML Data sheet ( Hoja de datos )
| Número de pieza | DAC121S101QML | |
| Descripción | 10 - 12-Bit Micro Power Digital-to-Analog Converter | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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DAC121S101QML
May 6, 2010
12-Bit Micro Power Digital-to-Analog Converter with Rail-
to-Rail Output
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 +2.7 V to 5.5 V supply and consumes just
177 µA of current at 3.6 V. The on-chip output amplifier allows
rail-to-rail output swing and the three wire serial interface op-
erates at clock rates up to 20 MHz over the specified supply
voltage range and is compatible with standard SPI™, QSPI,
MICROWIRE and DSP interfaces.
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 operates over the extended temperature
range of -55°C to +125°C.
Features
■ Total Ionizing Dose
100 krad(Si)
■ Single Event Latch-up
120 MeV-cm2/mg
■ Guaranteed Monotonicity
■ Low Power Operation
■ Rail-to-Rail Voltage Output
■ Power-on Reset to Zero Volts Output
■ SYNC Interrupt Facility
■ Wide power supply range (+2.7 V to +5.5 V)
■ Small Packages
■ Power Down Feature
Key Specifications
■ Resolution
12 bits
■ DNL
+0.21, -0.10 LSB (typ)
■ Output Settling Time
12.5 µs (typ)
■ Zero Code Error
2.1 mV (typ)
■ Full-Scale Error
−0.04 %FS (typ)
■ Power Dissipation
— Normal Mode 0.52 mW (3.6 V) / 1.19 mW (5.5 V) typ
— Pwr Down 0.014 µW (3.6 V) / 0.033 µW (5.5 V) typ
Mode
Applications
■ Battery-Powered Instruments
■ Digital Gain and Offset Adjustment
■ Programmable Voltage & Current Sources
■ Programmable Attenuators
Ordering Information
NS Part Number
DAC121S101WGRQV
Flight Part
DAC121S101WGMPR
Pre-flight Prototype
DAC121S101CVAL
Ceramic Evaluation Board
SMD Part Number
5962R0722601VZA
100 krad(Si)
NS Package Number
WG10A
WG10A
Package Discription
10LD Ceramic SOIC
10LD Ceramic SOIC
10LD Ceramic SOIC
on Evaluation Board
SPI™ is a trademark of Motorola, Inc.
© 2010 National Semiconductor Corporation
300180
www.DataSheet.in
www.national.com
1 page  
DC Parameters (Continued)
The following specifications apply for VA = +2.7 V to +5.5 V, RL = ∞, CL = 200 pF to GND, fSCLK = 20 MHz, input code range 48 to
4047. Boldface limits apply for TMIN ≤ TA ≤ TMAX: all other limits TA = 25°C, unless otherwise specified.
Symbol
Parameter
Conditions
Notes
Typical
(Note 8)
Min
Max
Units
Sub-
groups
LOGIC INPUT
IIN Input Current
VIL Input Low Voltage
VIH Input High Voltage
CIN Input Capacitance
POWER REQUIREMENTS
VA = 5 V
VA = 3 V
VA = 5 V
VA = 3 V
6 −200 +200 nA 1, 2, 3
0.8 V 1, 2, 3
0.5 V 1, 2, 3
2.4 V 1, 2, 3
2.1 V 1, 2, 3
(Note 9) 5
pF
IA
Supply Current (output
unloaded)
Normal Mode
fSCLK = 20 MHz
Normal Mode
fSCLK = 10 MHz
Normal Mode
fSCLK = 0
All PD Modes,
fSCLK = 20 MHz
All PD Modes,
fSCLK = 10 MHz
5.5 V
3.6 V
5.5 V
3.6 V
5.5 V
3.6 V
5.5 V
3.6 V
5.5 V
3.6 V
216
270 µA
1, 2, 3
145
200 µA
1, 2, 3
185
230 µA
1, 2, 3
132
175 µA
1, 2, 3
150
190 µA
1, 2, 3
115
160 µA
1, 2, 3
22 60 µA 1, 2, 3
12 30 µA 1, 2, 3
12 40 µA 1, 2, 3
6 20 µA 1, 2, 3
All PD Modes,
fSCLK = 0
Normal Mode
fSCLK = 20 MHz
5.5 V
3.6 V
5.5 V
(Note 9)
3.6 V
.006
.004
1.19
0.52
1.0 µA
1.0 µA
1.49 mW
.72 mW
1, 2, 3
1, 2, 3
Normal Mode
fSCLK = 10 MHz
Normal Mode
PC
Power Consumption (output
unloaded)
fSCLK = 0
All PD Modes,
fSCLK = 20 MHz
All PD Modes,
fSCLK = 10 MHz
5.5 V
(Note 9)
3.6 V
5.5 V
(Note 9)
3.6 V
5.5 V
(Note 9)
3.6 V
5.5 V
(Note 9)
3.6 V
1.02
0.47
0.82
0.41
0.12
0.07
0.04
0.02
1.27 mW
.63 mW
1.05 mW
.58 mW
.33 mW
.11 mW
.22 mW
.08 mW
IOUT / IA Power Efficiency
All PD Modes,
fSCLK = 0
ILOAD = 2 mA
5.5 V
(Note 9)
3.6 V
(Note 9)
0.033
0.014
91
94
5.5 µW
3.6 µW
%
%
www.DataSheet.in
5 www.national.com
5 Page 
Typical Performance Characteristics fSCLK = 20 MHz, TA = 25C, Input Code Range 48 to 4047, unless
otherwise stated
DNL at VA = 2.7V
DNL at VA = 5.5V
INL at VA = 2.7V
30018052
INL at VA = 5.5V
30018053
DNL vs. VA
30018054
INL vs. VA
30018055
www.DataSheet.in
30018022
11
30018023
www.national.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet DAC121S101QML.PDF ] | |
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