12-Bit A/D Converter
ADC122S101
www.ti.com
SNAS286D – MARCH 2005 – REVISED MARCH 2013
ADC122S101 2 Channel, 500 ksps to 1 Msps 12-Bit A/D ...
Description
ADC122S101
www.ti.com
SNAS286D – MARCH 2005 – REVISED MARCH 2013
ADC122S101 2 Channel, 500 ksps to 1 Msps 12-Bit A/D Converter
Check for Samples: ADC122S101
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: +0.9 / −0.6 LSB (typ) INL: ±0.64 LSB (typ) SNR: 72.4 dB (typ) Power Consumption
– 3V Supply: 4.3 mW (typ) – 5V Supply: 13.1 mW (typ)
DESCRIPTION
The ADC122S101 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 ADC122S101 is fully specified over a sample rate range of 500 ksps to 1 Msps. 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 ADC122S101 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 4.3 mW and 13.1 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...
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