The CS5530 is a 24-bit ADC from Cirrus Logic that uses charge-balance techniques to achieve 64X gain. It is optimized for measuring low-level unipolar or bipolar signals in weigh scale, process control, scientific, and medical applications.
The CS5530 is a highly integrated 24‑bit analog‑to‑digital converter that includes a chopper‑stabilized instrumentation amplifier (12 nV/V·Hz @ 0.1 Hz) with 64× gain. It provides selectable output word rates from 6.25 Sps to 3840 Sps via a fourth‑order sigma‑delta modulator and a simple three‑wire SPI/Microwire‑compatible serial interface.
The datasheet details analog and digital characteristics, dynamic performance, absolute maximum ratings, power‑supply configurations, ordering information, and environmental handling guidelines. It also includes revision history and contact information for Cirrus Logic support.
| Noise‑Free Resolution | Up to 19 bits |
|---|---|
| Linearity Error | 0.0015 % FS |
| Input Current (CVF) | 1200 pA |
| Power Consumption (Normal Mode) | 35‑45 mW |
| Selectable Word Rates | 6.25 to 3840 Sps |
| Operating Temperature Range | -40 °C to +85 °C |
The device supports selectable output word rates up to 3840 samples per second.
The input current noise is specified as 1.0 pA/√Hz.
The ADC can operate with a single‑supply configuration of +5 V (VA+) and ground, or with dual supplies such as +2.5 V and –2.5 V for analog, and +3 V to +5 V for digital.
It is rated for ambient temperatures from –40 °C to +85 °C.