# RC4559

> operational amplifier

**Wikidata**: [Q116039578](https://www.wikidata.org/wiki/Q116039578)  
**Source**: https://4ort.xyz/entity/rc4559

## Summary
RC4559 is an integrated-circuit operational amplifier model developed by Raytheon. It is an instance of an operational amplifier — a high-gain voltage amplifier with a differential input — and is also referenced under the aliases RM4559 and 4559.

## Key Facts
- RC4559 is an integrated circuit model classified as an operational amplifier.  
- The RC4559 was developed by Raytheon.  
- Common aliases for RC4559 are RM4559 and 4559.  
- The operational amplifier class (parent) is defined as a high-gain voltage amplifier with a differential input.  
- The RC4559 entry has a sitelink_count of 1 in the provided metadata.  
- The operational amplifier parent class has a sitelink_count of 62 in the provided metadata.  
- Image reference: https://commons.wikimedia.org/wiki/Special:FilePath/Revox_B215_-_IO_board_-as-is_-_RC4559_op_amp_01.jpg  
- Commons category: "RC4559 operational amplifier".  
- Wikidata description for RC4559: "operational amplifier".  
- Wikipedia languages field in the metadata: commons.

## FAQs
### Q: What is RC4559?
A: RC4559 is an integrated-circuit operational amplifier model. It is described as an instance of an operational amplifier (a high-gain voltage amplifier with a differential input) and was developed by Raytheon.

### Q: Who developed the RC4559?
A: The RC4559 was developed by Raytheon.

### Q: Are there other names for RC4559?
A: Yes. The RC4559 is also known by the aliases RM4559 and 4559.

## Why It Matters
RC4559 matters as a identified, named implementation of the operational amplifier class. The entry ties a concrete integrated-circuit model to the broader definition of an operational amplifier, which is defined here as a high-gain voltage amplifier with a differential input. Being developed by Raytheon links the model to a specific developer and places it within the catalog of industry-produced integrated circuits. The availability of media (an image on Commons) and a dedicated Commons category gives RC4559 a verifiable visual and archival presence. In metadata terms, RC4559 is recorded with its aliases and sitelink_count, enabling referencing and cross-linking in knowledge bases and media repositories. For anyone cataloging or researching operational-amplifier models, RC4559 serves as a discrete, citable instance with developer attribution and public media.

## Notable For
- Being an integrated-circuit model explicitly classified as an operational amplifier.  
- Developer attribution to Raytheon.  
- Known aliases RM4559 and 4559, which aid identification across documentation.  
- Publicly available media with a dedicated Commons category ("RC4559 operational amplifier").  
- A concise Wikidata description: "operational amplifier."

## Body

### Overview
- RC4559 is an integrated circuit model.  
- Its functional class is operational amplifier.  
- The operational amplifier class is defined here as a high-gain voltage amplifier with a differential input.

### Classification
- instance_of: integrated circuit model.  
- subclass_of: operational amplifier.

### Developer
- developer: Raytheon.

### Aliases and identifiers
- Aliases listed: RM4559, 4559.  
- Wikidata description: "operational amplifier".  
- sitelink_count (RC4559 metadata): 1.  
- Parent class sitelink_count (operational amplifier): 62.

### Media and repository links
- Image URL: https://commons.wikimedia.org/wiki/Special:FilePath/Revox_B215_-_IO_board_-as-is_-_RC4559_op_amp_01.jpg  
- Commons category: "RC4559 operational amplifier".  
- Wikipedia/Wikimedia languages field: commons.

### Metadata summary
- The structured properties associated with RC4559 include image, aliases, developer, instance_of, subclass_of, sitelink_count, commons_category, wikipedia_languages, and a short Wikidata description.