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ADC081S101CISD Fiches technique(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce ADC081S101CISD
Description  1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

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ADC121S101/ADC101S101/ADC081S101
1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP
General Description
The ADC121S101, ADC101S101, and ADC081S101 are low
power, monolithic CMOS 12-, 10- and 8-bit analog-to-digital
converters that operate at 1 MSPS. Each device is based on
a successive approximation register architecture with inter-
nal track-and-hold. The serial interface is compatible with
several standards, such as SPI, QSPI, MICROWIRE,
and many common DSP serial interfaces.
The ADC121S101/101S101/081S101 uses the supply volt-
age as a reference. This enables the devices to operate with
a full-scale input range of 0 to V
DD. The conversion rate is
determined from the serial clock (SCLK) speed. These con-
verters offer a shutdown mode, which can be used to trade
throughput for power consumption. The ADC121S101/
101S101/081S101 are operated with a single supply that
can range from +2.7V to +5.25V. Normal power consumption
during continuous conversion, using a +3V or +5V supply, is
2 mW or 10 mW, respectively. The power down feature,
which is enabled by a chip select (CS) pin, reduces the
power consumption to under 5 µW using a +5V supply. All
three converters are available in a 6-lead SOT-23 package,
which provides an extremely small footprint for applications
where space is a critical consideration. The ADC081S101 is
also available in a 6-lead LLP package. These products are
designed for operation over the industrial temperature range
of −40˚C to +85˚C, with some parameters specified to
+125˚C for the ADC121S101.
Features
n
Variable power management
n
Packaged in 6-lead SOT-23 (ADC081S101 also
available in a 6-Lead LLP package)
n
Power supply used as reference
n
Single +2.7V to +5.25V supply operation
n
SPI/QSPI/MICROWIRE/DSP compatible
Key Specifications
n
Resolution with no Missing Codes
12/10/8 bits
n
Conversion Rate
1 MSPS
n
DNL (ADC121S101)
+0.5, -0.3 LSB (typ)
n
INL (ADC121S101)
± 0.4 LSB (typ)
n
Power Consumption
— 3V Supply
2 mW (typ)
— 5V Supply
10 mW (typ)
Applications
n
Automotive Navigation
n
FA/ATM Equipment
n
Portable Systems
n
Medical Instruments
n
Mobile Communications
n
Instrumentation and Control Systems
Connection Diagram
20110201
MICROWIREis a trademark of National Semiconductor Corporation.
TRI-STATE® is a trademark of National Semiconductor Corporation.
QSPIand SPIare trademarks of Motorola, Inc.
January 2005
© 2005 National Semiconductor Corporation
DS201102
www.national.com


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