PS9551AL4-V-AX

ADCs/DACs - Special Purpose Overview

The PS9551AL4-V-AX is an optically isolated Delta-Sigma modulator manufactured by CEL. It integrates a high-accuracy analog-to-digital converter with optical isolation capabilities. The device operates on a 5V supply voltage and features an SPI data interface for digital output transmission. It is housed in an 8-pin surface mount package, specifically the 8-SMD Gull Wing configuration, designed for compact circuit board layouts. The component supports a wide operating temperature range from -40°C to +105°C, ensuring reliability in demanding environments. Power dissipation is rated at 700 mW, and it includes reverse voltage protection of 5V. This integrated solution combines signal conversion and isolation in a single small-form-factor device.

ADCs/DACs - Special Purpose Feature Summary

• Integrates high-accuracy A/D conversion with optical isolation
• Utilizes SPI digital interface for data communication
• Supports wide industrial operating temperature ranges

ADCs/DACs - Special Purpose Applications

• Industrial sensor signal conditioning
• Medical equipment isolation interfaces
• Data acquisition systems requiring galvanic isolation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix variant (e.g., V-E3) against project requirements, as lead-free status and moisture sensitivity levels may vary between sub-models. Confirm the package type matches the PCB footprint design, as DIP and SMD versions exist within the series. Check current availability status, as some variants may be discontinued or subject to long lead times. Ensure the supplier provides official Renesas or CEL documentation to guarantee authenticity and correct pinout alignment for the selected package style.

ADCs/DACs - Special Purpose Selection Notes

Choose this component when both high-resolution analog-to-digital conversion and electrical isolation are required in a single package. The SPI interface simplifies digital connectivity compared to parallel outputs. Consider the thermal performance and power dissipation limits when designing heat management strategies. Verify that the input signal range aligns with the modulator's specifications before finalizing the design. Evaluate the physical space constraints to ensure the 8-SMD package fits the enclosure design.

ADCs/DACs - Special Purpose Part Context

The PS9551 series represents a family of optically isolated Delta-Sigma modulators produced by CEL and later acquired by Renesas Electronics. These devices bridge the gap between analog sensing and digital processing by providing isolated data transmission. The AL4 variant specifically denotes the package and speed characteristics within this lineup. The product line is designed for applications where noise immunity and safety isolation are critical, replacing traditional discrete optocoupler and ADC combinations.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes include the PS9551AL4-V-E3-AX, which shares identical functional specifications but complies with RoHS lead-free standards. Both parts belong to the same PS9551 family and maintain compatible pinouts and electrical characteristics. Verify that the replacement variant meets the specific environmental certifications required for the target application.