Overview
The ADuM3190BRQZ is a high-stability isolated error amplifier developed by Analog Devices, Inc., utilizing their innovative iCoupler® technology. This component is specifically designed for linear feedback power supplies, offering significant improvements over traditional optocoupler and shunt regulator solutions. The ADuM3190 enhances transient response, power density, and stability, making it an ideal choice for various precision applications. It features a wideband operational amplifier and a high accuracy 1.225 V reference, ensuring reliable performance across a wide temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Range, Side 1 (VDD1) | 3.0 | 20 | V | |
| Operating Range, Side 2 (VDD2) | 3.0 | 20 | V | |
| Output Voltage, EAOUT | 0.4 | 2.7 | V | |
| Output Voltage, EAOUT2 (VDD1 = 4.5 V to 5.5 V) | 0.3 | 4.9 | V | |
| Noise, EAOUT | 1.7 | mV rms | ||
| Noise, EAOUT2 | 4.8 | mV rms | ||
| Bandwidth | 100 | 400 | kHz | |
| Isolation Voltage | 2.5 | kV rms | ||
| Input-to-Output Capacitance (CI-O) | 2.2 | pF (f = 1 MHz) | ||
| Input Capacitance (CI) | 4.0 | pF | ||
| Junction-to-Ambient Thermal Resistance (θJA) | 76 | °C/W |
Key Features
- Suitable for precision applications due to its high stability and accuracy.
- Wide supply voltage range: VDD1 and VDD2 from 3 V to 20 V.
- Low power operation: total current consumption less than 7 mA.
- High accuracy 1.225 V reference voltage.
- Wideband operational amplifier for various power supply loop compensation techniques.
- Compatible with Type II or Type III compensation networks.
- High isolation voltage rating of 2.5 kV rms.
- Operating temperature range of −40°C to +125°C.
- Qualified for automotive applications.
Applications
- Linear feedback power supplies.
- Shunt regulators.
- Inverters and UPS systems.
- Railway signaling systems.
- Off-grid power solutions.
- Portable electronic devices.
Q & A
- Q: What is the ADuM3190BRQZ used for?
A: The ADuM3190BRQZ is used in linear feedback power supplies, offering improved transient response, power density, and stability compared to traditional solutions.
- Q: What is the operating temperature range of the ADuM3190BRQZ?
A: The ADuM3190BRQZ operates over a temperature range of −40°C to +125°C.
- Q: What is the isolation voltage rating of the ADuM3190BRQZ?
A: The ADuM3190BRQZ has an isolation voltage rating of 2.5 kV rms.
- Q: What is the bandwidth of the ADuM3190BRQZ?
A: The bandwidth of the ADuM3190BRQZ ranges from 100 kHz to 400 kHz depending on the grade.
- Q: Is the ADuM3190BRQZ suitable for automotive applications?
A: Yes, the ADuM3190BRQZ is qualified for automotive applications.
- Q: What is the package type of the ADuM3190BRQZ?
A: The ADuM3190BRQZ is packaged in a 16-lead QSOP package.
- Q: What regulatory approvals does the ADuM3190BRQZ have?
A: The ADuM3190BRQZ has UL recognition, CSA Component Acceptance Notice, and VDE certificate of conformity.
- Q: How accurate is the reference voltage of the ADuM3190BRQZ?
A: The ADuM3190BRQZ has a high accuracy 1.225 V reference voltage with 0.5% initial accuracy and 1% accuracy over the full temperature range.
- Q: What is the typical power consumption of the ADuM3190BRQZ?
A: The ADuM3190BRQZ has a total current consumption of less than 7 mA.
- Q: Where can I find detailed information about the ADuM3190BRQZ?
A: Detailed information can be found in the datasheet available on Analog Devices' official website and other authorized distributors.
