ADC081S021| Datasheet

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ADC081S021 Single Channel, 50 to 200 ksps, 8-Bit A/D Converter

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 interface. Unlike the conventional practice of specifying performance 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 successiveapproximation register architecture with an internal trackand-hold circuit. The output serial data is straight binary, and is compatible with several standards, such as SPITM, QSPITM, 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 uW 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 n n n n Specified over a range of sample rates. 6-lead LLP and SOT-23 packages Variable power management Single power supply with 2.7V - 5.25V range SPITM/QSPITM/MICROWIRE/DSP compatible

Key Specifications
n n n n DNL INL SNR 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 50 to 200 ksps 12-bit 10-bit 8-bit ADC121S021 ADC101S021 ADC081S021 Specified for Sample Rate Range of: 200 to 500 ksps ADC121S051 ADC101S051 ADC081S051 500 ksps to 1 Msps ADC121S101 ADC101S101 ADC081S101

Connection Diagram

20145405

Ordering Information
Order Code ADC081S021CISD ADC081S021CISDX ADC081S021CIMF ADC081S021CIMFX ADC081S021EVAL
TRI-STATE is a trademark of National Semiconductor Corporation QSPITM and SPITM are trademarks of Motorola, Inc.

Temperature Range -40 C to +85 C -40 C to +85 C -40 C to +85 C -40 C to +85 C

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

2006 National Semiconductor Corporation

DS201454

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