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ADC124S021 fiches techniques PDF

National Semiconductor - 4 Channel- 200 kSPS- 12-Bit A/D Converter

Numéro de référence ADC124S021
Description 4 Channel- 200 kSPS- 12-Bit A/D Converter
Fabricant National Semiconductor 
Logo National Semiconductor 





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ADC124S021 fiche technique
April 2005
www.DataSheet4U.com
ADC124S021
4 Channel, 200 kSPS, 12-Bit A/D Converter
General Description
The ADC124S021 is a low-power, four-channel CMOS 12-bit
analog-to-digital converter with a high-speed serial interface.
Unlike the conventional practice of specifying performance
at a single sample rate only, the ADC124S021 is fully speci-
fied over a sample rate range of 50 kSPS to 200 kSPS. The
converter is based on a successive-approximation register
architecture with an internal track-and-hold circuit. It can be
configured to accept up to four input signals at inputs IN1
through IN4.
The output serial data is straight binary, and is compatible
with several standards, such as SPI, QSPI, MICROW-
IRE, and many common DSP serial interfaces.
The ADC124S021 operates with a single supply that can
range from +2.7V to +5.25V. Normal power consumption
using a +3V or +5V supply is 2.2 mW and 7.9 mW, respec-
tively. The power-down feature reduces the power consump-
tion to just 0.14 µW using a +3V supply, or 0.32 µW using a
+5V supply.
The ADC124S021 is packaged in a 10-lead MSOP 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 Four input channels
n Variable power management
n Single power supply with 2.7V - 5.25V range
Key Specifications
n DNL
n INL
n SNR
n Power Consumption
— 3V Supply
— 5V Supply
+0.4 / −0.2 LSB (typ)
± 0.35 LSB (typ)
72.0 dB (typ)
2.2 mW (typ)
7.9 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
ADC124S021
ADC124S051
ADC124S101
10-bit
ADC104S021
ADC104S051
ADC104S101
8-bit
ADC084S021
ADC084S051
ADC084S101
Connection Diagram
20124305
TRI-STATE® is a trademark of National Semiconductor Corporation
QSPIand SPIare trademarks of Motorola, Inc.
© 2005 National Semiconductor Corporation DS201243
www.national.com

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