The ADC124S021 is a low-power, four-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. It is fully specified over a sample rate range of 50 ksps to 200 ksps and can accept up to four input signals. The output serial data is straight binary and compatible with several standards such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces. The ADC124S021 operates with a single supply ranging from +2.7V to +5.25V. Normal power consumption is 2.2 mW (+3V supply) or 7.9 mW (+5V supply), and the power-down feature reduces power consumption to 0.14 µW (+3V supply) or 0.32 µW (+5V supply). The ADC124S021 is packaged in a 10-lead MSOP package and operates over the industrial temperature range of -40°C to +85°C.
The ADC124S021 is a low‑power, four‑channel CMOS 12‑bit analog‑to‑digital converter with a high‑speed serial interface. It operates from a single supply of 2.7 V to 5.25 V and is specified over a sample‑rate range of 50 ksps to 200 ksps. The device is packaged in a 10‑lead MSOP and is rated for –40 °C to +85 °C operation.
Key features include four analog inputs, variable power management, and compatibility with SPI, QSPI, and Microwire interfaces. The handbook provides pin descriptions, absolute‑maximum and operating ratings, timing diagrams, and typical performance characteristics for designers.
| Resolution | 12 bits |
|---|---|
| Sample Rate Range | 50 ksps to 200 ksps |
| Supply Voltage Range | 2.7 V to 5.25 V |
| Power Consumption (3 V) | 2.2 mW (typ) |
| Power Consumption (5 V) | 7.9 mW (typ) |
| Package | 10‑lead MSOP |
| Operating Temperature Range | –40 °C to +85 °C |
| Differential Non‑Linearity (DNL) | +0.4 / –0.2 LSB (typ) |
| Integral Non‑Linearity (INL) | +0.35 LSB (typ) |
| Signal‑to‑Noise Ratio (SNR) | 72 dB (typ) |
The device operates from a single supply that can range from 2.7 V to 5.25 V.
At a 3 V supply the typical power consumption is 2.2 mW.
The ADC124S021 is specified up to 200 ksps.
It is offered in a 10‑lead MSOP package.