The ADC122S051 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. It operates within a sample rate range of 200 kSPS to 500 kSPS. The converter utilizes a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept one or two input signals. The output serial data is straight binary and compatible with multiple standards such as SPI™, QSPI™, MICROWIRE, and common DSP serial interfaces. The ADC122S051 can be powered by a single supply ranging from +2.7V to +5.25V. Normal power consumption is 3.0 mW with a +3V supply or 10 mW with a +5V supply. The power-down feature reduces power consumption to just 0.14 µW with a +3V supply or 0.32 µW with a +5V supply. The ADC122S051 is packaged in an 8-lead MSOP package and operates over the industrial temperature range of -40˚C to +85˚C.
The ADC122S051 is a low‑power, two‑channel CMOS 12‑bit A/D converter with a high‑speed serial interface. It operates from a single supply of 2.7 V to 5.25 V and is available in an 8‑lead MSOP package. The device supports sample rates from 200 kSPS to 500 kSPS and offers power‑down modes for ultra‑low consumption.
Key features include dual input channels, variable power management, and compatibility with SPI, QSPI, and other common DSP interfaces. Typical specifications are 3 mW power at 3 V, 10 mW at 5 V, and a shutdown current of 0.32 pW. The ADC operates over –40 °C to +85 °C and supports a maximum clock frequency of 8 MHz.
| Resolution | 12‑bit |
|---|---|
| Sample Rate Range | 200 kSPS to 500 kSPS |
| Supply Voltage | 2.7 V to 5.25 V |
| Package | 8‑lead MSOP |
| Operating Temperature | -40 °C to +85 °C |
| Maximum Clock Frequency | 8 MHz |
| Number of Input Channels | Two |
The device supports a maximum clock frequency of 8 MHz.
It provides two input channels.