Overview
The ADUM4190ARIZ-RL is a high-stability isolated error amplifier developed by Analog Devices, Inc., utilizing their iCoupler® technology. This component is specifically designed for linear feedback power supplies, offering significant improvements in transient response, power density, and stability compared to traditional optocoupler and shunt regulator solutions. It features a wideband operational amplifier suitable for various power supply loop compensation techniques and a high accuracy 1.225V reference voltage for comparing the supply output setpoint. The amplifier is fast enough to handle fast transient and overcurrent conditions, making it an ideal choice for demanding power supply applications.
Key Specifications
| Specification | Value |
|---|---|
| Isolation Voltage | 5 kVrms reinforced |
| Bandwidth | 200 kHz typical |
| Common-mode Rejection | 72 dB typical (VDD1 = VDD2 = 3V to 20V for TA = TMIN to TMAX) |
| Power Supply Rejection | 60 dB minimum (DC, VDD1 = VDD2 = 3V to 20V) |
| Reference Voltage | 1.225 V |
| Accuracy | 0.5% initial, 1% over full temperature range |
| Power Consumption | < 7 mA total |
| Package Type | 16-lead SOIC-IC |
| Temperature Range | -40°C to +85°C |
Key Features
- High stability over time and temperature.
- Compatible with Type II or Type III compensation networks.
- Wideband operational amplifier for various power supply loop compensation techniques.
- High accuracy 1.225V reference voltage.
- Low power operation with total current less than 7 mA.
- High isolation voltage of 5 kVrms reinforced.
- Excellent common-mode rejection and power supply rejection.
Applications
- Linear feedback power supplies.
- Inverters.
- Uninterruptible power supplies (UPS).
- DOSA-compatible modules.
- Voltage monitors.
Q & A
- What is the primary application of the ADUM4190ARIZ-RL? The ADUM4190ARIZ-RL is primarily used in linear feedback power supplies.
- What technology does the ADUM4190ARIZ-RL use? It uses Analog Devices' iCoupler® technology.
- What is the isolation voltage of the ADUM4190ARIZ-RL? The isolation voltage is 5 kVrms reinforced.
- What is the bandwidth of the ADUM4190ARIZ-RL? The bandwidth is 200 kHz typical.
- What is the reference voltage of the ADUM4190ARIZ-RL? The reference voltage is 1.225 V.
- What is the temperature range of the ADUM4190ARIZ-RL? The temperature range is from -40°C to +85°C.
- What is the package type of the ADUM4190ARIZ-RL? The package type is a 16-lead SOIC-IC.
- How accurate is the ADUM4190ARIZ-RL? It has an initial accuracy of 0.5% and 1% accuracy over the full temperature range.
- What is the power consumption of the ADUM4190ARIZ-RL? The total power consumption is less than 7 mA.
- Is the ADUM4190ARIZ-RL compatible with different compensation networks? Yes, it is compatible with Type II or Type III compensation networks.
