The CS5521/22/23/24/28 are highly integrated ∆Σ Analog-to-Digital Converters (ADCs) which use charge-balance techniques to achieve 16-bit (CS5521/23) and 24-bit (CS5522/24/28) performance. The ADCs come as either two-channel (CS5521/22), four-channel (CS5523/24), or eight-channel (CS5528) devices, and include a low input current, chopper-stabilized instrumentation amplifier. To permit selectable input spans of 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, and 5 V, the ADCs include a PGA (Programmable Gain Amplifier).
The CS5521/22/23/24/28 family are highly integrated analog‑to‑digital converters offering 16‑bit (CS5521/23) and 24‑bit (CS5522/24/28) resolution. They are available in two‑, four‑, and eight‑channel configurations and include a low‑input‑current, chopper‑stabilized instrumentation amplifier with programmable gain and selectable input spans.
Key features include a fourth‑order delta‑sigma modulator, three‑wire serial interface compatible with SPI and Microwire, programmable channel sequencing with FIFO, self‑calibration, and a single‑supply operation from +5 V. The devices are suited for low‑level signal measurement in process‑control and thermocouple applications.
| Resolution | 16‑bit (CS5521/23) / 24‑bit (CS5522/24/28) |
|---|---|
| Low Input Current | 100 pA |
| Power Consumption (Normal Mode) | 5.5 mW (CS5521/22) / 7.5 mW (CS5522/24/28) |
| Maximum Output Word Rate | 617 Hz (XIN = 200 kHz) |
The devices have a low input current of 100 pA.
In normal mode the CS5521/22 consumes about 5.5 mW and the CS5522/24/28 about 7.5 mW.
The ADCs can operate up to a 617 Hz output word rate when XIN is 200 kHz.