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ADC122S021 Datasheet

Part Number ADC122S021
Manufacturers Texas Instruments
Logo Texas Instruments
Description 12-Bit A/D Converter
Datasheet ADC122S021 DatasheetADC122S021 Datasheet (PDF)

ADC122S021 www.ti.com SNAS280D – MARCH 2005 – REVISED MARCH 2013 ADC122S021 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter Check for Samples: ADC122S021 FEATURES 1 •2 Specified over a Range of Sample Rates. • Two Input Channels • Variable Power Management • Single Power Supply with 2.7V - 5.25V Range APPLICATIONS • Portable Systems • Remote Data Acquisition • Instrumentation and Control Systems KEY SPECIFICATIONS • DNL +0.4 / −0.2 LSB (typ) • INL ± 0.35 LSB (typ) • SNR 72.0 dB (typ) • P.

  ADC122S021   ADC122S021






12-Bit A/D Converter

ADC122S021 www.ti.com SNAS280D – MARCH 2005 – REVISED MARCH 2013 ADC122S021 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter Check for Samples: ADC122S021 FEATURES 1 •2 Specified over a Range of Sample Rates. • Two Input Channels • Variable Power Management • Single Power Supply with 2.7V - 5.25V Range APPLICATIONS • Portable Systems • Remote Data Acquisition • Instrumentation and Control Systems KEY SPECIFICATIONS • DNL +0.4 / −0.2 LSB (typ) • INL ± 0.35 LSB (typ) • SNR 72.0 dB (typ) • Power Consumption 2.2 mW (typ) – 5V Supply 7.9 mW (typ) DESCRIPTION The ADC122S021 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a highspeed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC122S021 is fully specified 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 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 ADC122S021 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, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply. Th.


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