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1FEATURES

2? Specified Over a Range of Sample Rates.

? Two Input Channels

? Variable Power Management

? Single Power Supply with 2.7V - 5.25V Range

KEY SPECIFICATIONS

? DNL: ±0.04 LSB (typ)

? INL: ±0.04 LSB (typ)

? SNR: 49.6 dB (typ)

? Power Consumption:

– 3V Supply 1.6 mW (typ)

– 5V Supply 5.8 mW (typ)

APPLICATIONS

? Portable Systems

? Remote Data Acquisition

? Instrumentation and Control Systems

DESCRIPTION

The ADC082S021 is a low-power, two-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 ADC082S021 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. It can be configured to accept one or two input

signals at inputs IN1 and IN2.

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 ADC082S021 operates with a single supply that

can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 1.6 mW

and 5.8 mW, respectively. The power-down feature

reduces the power consumption to just 0.12 μW using

a +3V supply, or 0.35 μW using a +5V supply.

The ADC082S021 is packaged in an 8-lead VSSOP

package. Operation over the industrial temperature

range of ?40°C to +85°C.