Description

The CS5540 is a low-power and low-voltage ∆Σ analog-to-digital converter (ADC), which achieves highly accurate conversions using a simple non-programmable interface that is easy to understand and design-in. It is optimized to convert analog signals in DC measurement applications, such as temperature and pressure measurement, and various portable devices where low-power consumption is required.

Features

● ∆Σ Analog-to-Digital Converter

- Linearity Error: 0.0015 FS

- RMS Noise: 4 µV

● Two Channel Differential MUX

● Buffered, Fully Differential Analog and

Voltage Reference Inputs

● Scalable VREF Input: 0.1 V to Analog Supply

● High Absolute Accuracy via Self-Calibration

● Fixed Digital Filter

- Single Conversion Settling at 6.7 SPS

- Simultaneous 50/60 Hz Rejection

● Simple Serial Interface

- SPITM and MicrowireTM Compatible

- Schmitt Trigger on Serial Clock (SCLK)

● Low Power

- Single +3.0 V Supply

- 330 µA Supply Current

- 10 µA in Sleep Mode