CS5526-BSZ

Analog To Digital Converters (ADC) Overview

The CS5526-BSZ is a 20-bit, multi-range analog-to-digital converter (ADC) from Cirrus Logic. It integrates a chopper-stabilized instrumentation amplifier, programmable gain amplifier (PGA), and four-order delta-sigma modulator. The device features eight selectable digital filters with output word rates ranging from 3.76 Sps to 202 Sps, providing simultaneous 50/60 Hz noise rejection at lower rates. It supports bipolar and unipolar input ranges including 25 mV, 55 mV, 100 mV, 1 V, 2.5 V, and 5 V. Key specifications include a linearity error of ±0.0007%FS typical and a noise-free resolution of 18 bits. The component operates on a single +5 V analog supply and a +3.0 V or +5 V digital supply.

Analog To Digital Converters (ADC) Feature Summary

• 20-bit resolution with 0.0007%FS typical linearity error
• Integrated chopper-stabilized instrumentation amplifier for low-level signal measurement
• On-chip charge pump drive circuitry enables negative bias generation for bipolar ground-referenced signals
• Programmable output word rates from 3.76 Sps to 202 Sps with one-cycle settling time

Analog To Digital Converters (ADC) Applications

• Process control applications requiring isolated and non-isolated low-level signal measurement
• Thermocouple temperature measurements utilizing the charge pump drive for negative voltage handling
• Ratiometric bridge transducer outputs in industrial monitoring systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'BSZ' against the manufacturer's current ordering information to confirm package type and environmental compliance status. Check for end-of-life notifications or recommended new design alternatives as product lifecycles may change. Ensure compatibility with existing serial interface timing requirements before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the CS5526-BSZ when 20-bit resolution is required for high-precision applications. Choose this model over the CS5525 if higher resolution is necessary, as they are pin-compatible. Consider the available input ranges and the need for internal negative bias generation via the CPD pin when designing the power supply architecture.

Analog To Digital Converters (ADC) Part Context

The CS5526 belongs to the CS5525/CS5526 family of highly integrated delta-sigma ADCs. These devices are designed for process control and medical applications where measuring low-level unipolar or bipolar signals is critical. The family shares identical pinouts and functionality, differing primarily in resolution (16-bit for CS5525, 20-bit for CS5526).

Analog To Digital Converters (ADC) Replacement Considerations

The CS5525-BSZ is a pin-compatible alternative within the same family offering 16-bit resolution. Verify if the reduced resolution meets application requirements before substituting.