Overview
The ISO122UE4 is a precision isolation amplifier designed by Burr-Brown, now part of Texas Instruments. This device incorporates a novel duty cycle modulation-demodulation technique, ensuring excellent reliability and high-frequency transient immunity across the isolation barrier. The ISO122UE4 is easy to use, requiring no external components for operation, making it ideal for various industrial and measurement applications.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Supply Voltage Range | ±4.5 V to ±18 V | V |
| Continuous Isolation Voltage | 1500 Vrms | Vrms |
| Junction Temperature | -25°C to 85°C | °C |
| Storage Temperature | -40°C to 125°C | °C |
| Nonlinearity | ±0.020% max | %FSR |
| Signal Bandwidth | 50 kHz | Hz |
| VOS Drift | 200 µV/°C | µV/°C |
| Quiescent Current (VS1) | ±5.0 mA | mA |
| Quiescent Current (VS2) | ±5.5 mA | mA |
| Package Options | 16-pin PDIP, 28-pin SOIC |
Key Features
- Duty cycle modulation-demodulation technique for high reliability and transient immunity.
- No external components required for operation.
- High isolation voltage of 1500 Vrms.
- Low nonlinearity of ±0.020% max.
- Wide signal bandwidth of 50 kHz.
- Low VOS drift of 200 µV/°C.
- Available in 16-pin PDIP and 28-pin SOIC packages.
Applications
- Industrial Process Control: Transducer Isolator, Isolator for Thermocouples, RTDs, Pressure Bridges, and Flow Meters.
- Ground Loop Elimination.
- Motor and SCR Control.
- Power Monitoring.
- PC-Based Data Acquisition.
- Test Equipment.
Q & A
- What is the supply voltage range of the ISO122UE4?
The supply voltage range is ±4.5 V to ±18 V.
- What is the continuous isolation voltage of the ISO122UE4?
The continuous isolation voltage is 1500 Vrms.
- What is the maximum nonlinearity of the ISO122UE4?
The maximum nonlinearity is ±0.020%.
- What is the signal bandwidth of the ISO122UE4?
The signal bandwidth is 50 kHz.
- What are the quiescent currents for VS1 and VS2?
The quiescent currents are ±5.0 mA for VS1 and ±5.5 mA for VS2.
- In what packages is the ISO122UE4 available?
The ISO122UE4 is available in 16-pin PDIP and 28-pin SOIC packages.
- What is the VOS drift of the ISO122UE4?
The VOS drift is 200 µV/°C.
- What are some common applications of the ISO122UE4?
Common applications include industrial process control, ground loop elimination, motor and SCR control, power monitoring, PC-based data acquisition, and test equipment.
- Does the ISO122UE4 require external components for operation?
No, the ISO122UE4 does not require external components for operation.
- How is the signal transmitted across the isolation barrier in the ISO122UE4?
The signal is transmitted digitally across a 2pF differential capacitive barrier using duty cycle modulation-demodulation technique.
