ADC081S021 Datasheet PDF - National Semiconductor

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ADC081S021
National Semiconductor

Part Number ADC081S021
Description 8-Bit A/D Converter
Page 17 Pages


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January 2006
ADC081S021
Single Channel, 50 to 200 ksps, 8-Bit A/D Converter
General Description
The ADC081S021 is a low-power, single channel CMOS
8-bit analog-to-digital converter with a high-speed serial in-
terface. Unlike the conventional practice of specifying per-
formance at a single sample rate only, the ADC081S021 is
fully specified over a sample rate range of 50 ksps to 200
ksps. The converter is based upon a successive-
approximation register architecture with an internal track-
and-hold circuit.
The output serial data is straight binary, and is compatible
with several standards, such as SPI, QSPI,
MICROWIRE, and many common DSP serial interfaces.
The ADC081S021 operates with a single supply that can
range from +2.7V to +5.25V. Normal power consumption
using a +3.6V or +5.25V supply is 1.3 mW and 7.7 mW,
respectively. The power-down feature reduces the power
consumption to as low as 2.6 µW using a +5.25V supply.
The ADC081S021 is packaged in 6-lead LLP and SOT-23
packages. Operation over the industrial temperature range
of −40˚C to +85˚C is guaranteed.
Features
n Specified over a range of sample rates.
n 6-lead LLP and SOT-23 packages
n Variable power management
n Single power supply with 2.7V - 5.25V range
n SPI/QSPI/MICROWIRE/DSP compatible
Key Specifications
n DNL
n INL
n SNR
n Power Consumption
— 3.6V Supply
— 5.25V Supply
+0.04/-0.03 LSB (typ)
+0.04/-0.03 LSB (typ)
49.6 dB (typ)
1.3 mW (typ)
7.7 mW (typ)
Applications
n Portable Systems
n Remote Data Acquisition
n Instrumentation and Control Systems
Pin-Compatible Alternatives by Resolution and Speed
All devices are fully pin and function compatible.
Resolution
Specified for Sample Rate Range of:
50 to 200 ksps
200 to 500 ksps
500 ksps to 1 Msps
12-bit
ADC121S021
ADC121S051
ADC121S101
10-bit
ADC101S021
ADC101S051
ADC101S101
8-bit
ADC081S021
ADC081S051
ADC081S101
Connection Diagram
Ordering Information
Order Code
ADC081S021CISD
ADC081S021CISDX
ADC081S021CIMF
ADC081S021CIMFX
ADC081S021EVAL
Temperature Range
−40˚C to +85˚C
−40˚C to +85˚C
−40˚C to +85˚C
−40˚C to +85˚C
TRI-STATE® is a trademark of National Semiconductor Corporation
QSPIand SPIare trademarks of Motorola, Inc.
© 2006 National Semiconductor Corporation DS201454
20145405
Description
6-Lead LLP Package
6-Lead LLP Package, Tape & Reel
6-Lead SOT-23 Package
6-Lead SOT-23 Package, Tape & Reel
SOT-23 Evaluation Board
Top Mark
X9C
X9C
X09C
X09C
www.national.com
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