Cirrus Logic Delta-Sigma Analog-to-Digital Converter Delivers Low-Noise Performance, Reduced Costs.

CS5530 Family of Converters Designed for Cost-Sensitive Industrial Measurement Applications

AUSTIN, Texas -- Cirrus Logic Inc. (Nasdaq:CRUS) has extended its widely used CS5531/32/33/34 family of integrated Delta-Sigma analog-to-digital (A/D) converters with a lower-cost option, the CS5530, that offer the same low-noise performance and output word rate flexibility. With its low-noise instrumentation amplifier, 24-bit performance and advanced features, the CS5530 is ideal for scientific measurement applications such as weigh scales, low-cost temperature controllers, digital panel meters and process control modules.

"With the CS5530 A/D converter, we have built upon the success of our popular CS553X family of Delta-Sigma converters by delivering a cost-reduced solution that offers excellent performance for the higher-volume segments of the industrial measurement market," said John Paulos, vice president and general manager, Cirrus Logic Industrial Products Division.

With a single differential input channel and a fixed gain of 64x in the high-performance chopper-stabilized instrumentation amplifier, noise performance is a very low 12 nanovolts per root hertz at 0.01 Hz. Digital scaling is also available, which can provide additional effective gain of up to 40. The Delta-Sigma modulator is identical to that used throughout the CS533X product family and features both 50-Hz or 60-Hz rejection. The range of user-selectable output word rates is also unchanged, with 20 rates between 6.25 and 3,840 samples per second (SPS) when operating from a 4.9152MHz master clock. With a simple three-wire SPI and microwire-compatible serial interface, the CS5530 is easily connected to most popular microcontrollers.

Pricing and Availability

Currently sampling to key customers, the CS5530 is available in a 20-lead TSSOP package and is priced at $3.99 in quantities of 1,000.

Cirrus Logic Inc.

Cirrus Logic develops high-precision, analog and mixed-signal integrated circuits for a broad range of consumer and industrial markets. Building on its diverse analog mixed-signal patent portfolio, Cirrus Logic delivers highly optimized products for consumer and commercial audio, automotive entertainment and industrial applications. The company operates from headquarters in Austin, Texas, with offices in Colorado, Europe, Japan and Asia. More information about Cirrus Logic is available at www.cirrus.com.

Cirrus Logic and Cirrus are trademarks of Cirrus Logic Inc. All other product names noted herein may be trademarks of their respective holders.