ADC081S051 Datasheet, PDF (1/13 Pages) National Semiconductor (TI) – Single Channel, 500 kSPS, 8-Bit A/D Converter

April 2005
ADC081S051
Single Channel, 500 kSPS, 8-Bit A/D Converter
General Description
The ADC081S051 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 ADC081S051 is
fully specified over a sample rate range of 200 kSPS to 500
kSPS. The converter is based on 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 ADC081S051 operates with a single supply that can
range from +2.7V to +5.25V. Normal power consumption
using a +3V or +5V supply is 2.9 mW and 10.5 mW, respec-
tively. The power-down feature reduces the power consump-
tion to as low as 2.6 µW using a +5V supply.
The ADC081S051 is packaged in an 6-lead LLP package.
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 package
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
— 3V Supply
— 5V Supply
+ 0.07 / −0.06 LSB (typ)
+ 0.06 / −0.07 LSB (typ)
49.6 dB (typ)
2.9 mW (typ)
10.5 mW (typ)
Applications
n Portable Systems
n Remote Data Aquisitions
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
ADC081S101
8-bit
ADC081S021
ADC081S051
ADC081S101
Connection Diagram
Ordering Information
Order Code
ADC081S051CISD
ADC081S051CISDX
Temperature Range
−40˚C to +85˚C
−40˚C to +85˚C
20145505
Description
6-Lead LLP Package
6-Lead LLP Package, Tape & Reel
Top Mark
X6C
X6C
TRI-STATE^® is a trademark of National Semiconductor Corporation
QSPI™ and SPI™ are trademarks of Motorola, Inc.
© 2005 National Semiconductor Corporation DS201455
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