The ADC122S101 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. It 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™, MICROW- IRE, 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, respec- tively. The power-down feature reduces the power consump- tion to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply. The ADC122S101 is packaged in an 8-lead MSOP package. Operation over the industrial temperature range of −40˚C to +85˚C is guaranteed.
The ADC122S101 is a low-power, two-channel CMOS 12-bit analog-to-digital converter featuring a high-speed serial interface compatible with SPI, QSPI, and MICROWIRE standards. It utilizes a successive-approximation register architecture with an internal track-and-hold circuit and can be configured to accept one or two input signals.
| Resolution | 12 Bits |
|---|---|
| Sample Rate Range | 500 kSPS to 1 MSPS |
| Supply Voltage | +2.7V to +5.25V |
| Power Consumption (5V) | 13.1 mW |
| Package Type | 8-lead MSOP |
| Operating Temperature Range | -40°C to +85°C |
| Signal-to-Noise Ratio (SNR) | 72.4 dB |
The device is fully specified over a sample rate range of 500 kSPS to 1 MSPS.
The power-down feature reduces power consumption to 0.14 µW using a +3V supply.