ISO122U/1K

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Isolation
• Characteristics:
  • Provides galvanic isolation between input and output signals
  • High accuracy and low noise performance
  • Compact package design
  • Wide operating temperature range
• Package: SOP-8
• Essence: Signal isolation for enhanced safety and noise reduction
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 3.0V to 5.5V
• Isolation Voltage: 2500Vrms
• Operating Temperature Range: -40°C to +125°C
• Input Offset Voltage: ±150µV
• Input Bias Current: ±10nA
• Bandwidth: 100kHz
• Common Mode Rejection Ratio (CMRR): 120dB
• Propagation Delay: 15µs

Detailed Pin Configuration

The ISO122U/1K IC has the following pin configuration:

1. V+
2. V-
3. NC (No Connection)
4. Output
5. Input
6. NC (No Connection)
7. NC (No Connection)
8. GND

Functional Features

• Provides high-level electrical isolation between input and output signals
• Low offset voltage and bias current ensure accurate signal transmission
• Excellent common mode rejection ratio reduces noise interference
• Fast propagation delay enables real-time signal processing
• Wide operating temperature range allows for versatile applications

Advantages

• Enhanced safety by isolating sensitive circuits from high-voltage or noisy environments
• Improved signal integrity through reduced noise and interference
• Compact package design saves space in circuit layouts
• Wide operating temperature range enables usage in various environmental conditions

Disadvantages

• Limited bandwidth compared to some other isolation ICs
• Higher cost compared to non-isolated signal conditioning solutions

Working Principles

The ISO122U/1K utilizes a differential input stage followed by an isolation barrier. The input signal is converted into a differential voltage across the isolation barrier, which provides electrical isolation between the input and output circuits. This isolation prevents ground loops and reduces noise interference.

Detailed Application Field Plans

The ISO122U/1K is commonly used in the following applications:

1. Industrial automation systems
2. Medical equipment
3. Power grid monitoring
4. Motor control systems
5. Data acquisition systems

Alternative Models

1. ISO124U/1K: Similar specifications with additional features for higher precision applications.
2. ISO121U/1K: Lower-cost alternative with slightly reduced performance specifications.
3. ISO124P: DIP package variant for through-hole mounting.

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