The ADC121S021 is a single channel, 50 to 200 ksps, 12-bit A/D converter from ADI with high performance, low power consumption and multiple interfaces.
The ADC121S021 is a low‑power, single‑channel CMOS 12‑bit analog‑to‑digital converter that operates from a single supply of 2.7 V to 5.25 V. It supports sample rates from 50 ksps up to 200 ksps and offers SPI, QSPI, MICROWIRE and DSP‑compatible serial interfaces. The device is packaged in 6‑lead LLP or SOT‑23 formats and is rated for an industrial temperature range of –40 °C to +85 °C.
The datasheet provides detailed pin descriptions, absolute maximum ratings, electrical characteristics, timing specifications, typical performance graphs, and physical dimensions. Ordering information for the various package options and evaluation board is also included.
| Resolution | 12 bits |
|---|---|
| Sample Rate Range | 50 ksps to 200 ksps |
| Supply Voltage | 2.7 V to 5.25 V |
| Power Consumption (3.6 V) | 1.5 mW (typ) |
| Power Consumption (5.25 V) | 7.9 mW (typ) |
| Typical SNR | 72.3 dB |
| Typical DNL | +0.45 / -0.25 LSB |
| Typical INL | +0.45 / -0.40 LSB |
| Package Options | 6‑lead LLP and SOT‑23 |
| Operating Temperature Range | -40 °C to +85 °C |
The device operates from a single supply voltage of 2.7 V to 5.25 V.
The ADC121S021 is available in 6‑lead LLP and SOT‑23 packages.
Typical power consumption is 1.5 mW when powered at 3.6 V.
The converter can sample up to 200 ksps.