# 175 series integrated circuits

> bipolar linear ICs for IF stages of radar and radio receivers

**Wikidata**: [Q131731723](https://www.wikidata.org/wiki/Q131731723)  
**Source**: https://4ort.xyz/entity/175-series-integrated-circuits

## Summary
The 175 series integrated circuits are a set of bipolar linear integrated circuits designed for intermediate frequency (IF) stages in radar and radio receivers. They are part of the broader class of linear integrated circuits, which are miniature analog circuits formed on a single semiconductor substrate.

## Key Facts
- **Part of**: Linear integrated circuit class, consisting of analog circuits on a single semiconductor material.
- **Related to**: Integrated circuit series, sharing the same part prefix.
- **Use**: Primarily for IF stages in radar and radio receivers.
- **Instance of**: Integrated circuit series.
- **Subclass of**: Linear integrated circuit.
- **Compliance**: Follows Soviet integrated circuit designation standards.
- **Country of origin**: Soviet Union.
- **Image available**: Example circuit from the series (175УВ4-1 amplifier).

## FAQs
### Q: What type of integrated circuits are in the 175 series?
A: The 175 series consists of bipolar linear integrated circuits, specifically designed for intermediate frequency (IF) stages in radar and radio receivers.

### Q: Are the 175 series integrated circuits part of a larger classification?
A: Yes, they belong to the broader class of linear integrated circuits, which are analog circuits fabricated on a single semiconductor substrate.

### Q: Where were the 175 series integrated circuits developed?
A: The 175 series integrated circuits were developed in the Soviet Union and comply with Soviet integrated circuit designation standards.

### Q: What are the 175 series integrated circuits used for?
A: They are primarily used in the intermediate frequency stages of radar and radio receivers.

### Q: Are there other integrated circuit series with similar designations?
A: Yes, the 175 series is part of a broader category of integrated circuit series that share the same part prefix.

## Why It Matters
The 175 series integrated circuits played a crucial role in the development of radar and radio receiver technology by providing compact, high-performance analog circuits for intermediate frequency stages. As part of the Soviet Union’s integrated circuit production, they contributed to advancements in electronic warfare and communication systems. Their linear design ensured stable signal processing, which was essential for reliable radar and radio operations. The series reflects the Soviet Union’s efforts to produce miniature, efficient electronic components during the Cold War era.

## Notable For
- **Specialized use**: Designed specifically for IF stages in radar and radio receivers.
- **Bipolar technology**: Utilizes bipolar transistors for linear amplification.
- **Soviet origin**: Part of the Soviet Union’s integrated circuit designation system.
- **Linear design**: Provides stable signal processing for critical applications.
- **Part of a series**: Shares a common part prefix with other integrated circuit models.

## Body
### Classification
The 175 series integrated circuits are classified as **linear integrated circuits**, meaning they are analog circuits fabricated on a single semiconductor substrate. They are further grouped under the **integrated circuit series** category, sharing a common part prefix with other related models.

### Design and Use
The series is composed of **bipolar linear ICs**, optimized for **intermediate frequency (IF) stages** in radar and radio receivers. Their linear design ensures stable signal processing, which is critical for reliable operation in these applications.

### Development and Compliance
The 175 series integrated circuits were developed in the **Soviet Union** and comply with **Soviet integrated circuit designation standards**. This classification system was used to organize and categorize integrated circuits produced during the Cold War era.

### Visual Documentation
An example of the 175 series can be found in the image of the **175УВ4-1 amplifier**, which is available in the Wikimedia Commons. This image provides a visual reference for the physical appearance and design of the circuits in the series.

### Related Series
The 175 series is part of a broader category of **integrated circuit series**, where multiple models share the same part prefix. This grouping reflects the Soviet Union’s approach to organizing and producing integrated circuits for various electronic applications.