ADC122S021
- 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 +0.4 / −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)
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The ADC122S021 is a low-power, two-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 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.
The ADC122S021 is packaged in an 8-lead VSSSOP package. Operation over the industrial temperature range of −40°C to +85°C is ensured.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | ADC122S021 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter datasheet (Rev. D) | 19 Mar 2013 | |
Circuit design | Low-input bias-current front end SAR ADC circuit (Rev. A) | 11 Mar 2019 | ||
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | 21 May 2015 | ||
EVM User's guide | Evaluation Board User's Guide 12, 10 and 8-Bit A-to-D Converters with Input Mux | 25 Jan 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADC128S052SW-LINUX — Linux Driver for ADC128S052
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- adc128s052
- adc122s021
Linux Source (...)
ANALOG-ENGINEER-CALC — Analog engineer's calculator
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
Ordering & quality
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- Lead finish/Ball material
- MSL rating/Peak reflow
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