CS5532-ASZ 24-Bit Delta-Sigma ADC – 2-Channel PGIA – SSOP-20 – Cirrus Logic

The CS5532-ASZ from Cirrus Logic is a high-precision 24-bit Delta-Sigma analog-to-digital converter (ADC)designed for demanding measurement and instrumentation applications. Featuring two differential input channels and an ultra-low-noise programmable gain instrumentation amplifier (PGIA), it delivers exceptional accuracy and stability for precision sensing systems.

Using an advanced Delta-Sigma charge-balance architecture, the CS5532-ASZ provides highly linear conversion with a 0.0007% full-scale linearity error, and offers selectable output word rates ranging from 6.25 SPS to 3,840 SPS. Its chopper-stabilized PGIA supports gain settings from 1× to 64×, offering outstanding low-noise performance of 6 nV/√Hz at 64× gain with no 1/f noise.

The ADC communicates through a simple 3-wire serial interface compatible with SPI™ and Microwire™, making it easy to integrate into a wide range of embedded designs. With flexible power supply configurations—single +5V or dual ±2.5V to ±3V—the CS5532-ASZ is well suited for precision instrumentation, pressure sensors, weighing systems, industrial control, and data acquisition equipment.

Although marked End-of-Life (EOL) by the manufacturer, it remains widely used and available through select distributors.

Key Specifications:

• Manufacturer: Cirrus Logic

• Part Number: CS5532-ASZ

• Package: SSOP-20

• Resolution: 24-bit Delta-Sigma ADC

• Channels: 2 differential

• Interface: SPI/Microwire compatible (3-wire)

• PGIA Gain Range: 1× to 64×

• Noise: 6 nV/√Hz at 64× gain, no 1/f noise

• Linearity Error: 0.0007% FS

• Word Rates: 6.25 to 3,840 SPS

• Supply Options:
  – Single +5V
  – Dual ±2.5V to ±3V

• Status: End of Life (EOL), limited availability

Package Includes:
1 x CS5532-ASZ 24-Bit Precision ADC

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