Overview
The ADuM3190WTRQZ-RL7 is a high stability isolated error amplifier produced by Analog Devices Inc. This component is based on Analog Devices' iCoupler® technology, which provides reliable and stable signal transmission across isolation barriers. The ADuM3190 is particularly suited for linear feedback power supplies, offering improvements in transient response, power density, and stability compared to traditional optocoupler and shunt regulator solutions. It features a wideband operational amplifier and a high accuracy 1.225 V reference voltage, making it ideal for various power supply loop compensation techniques.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | −40°C | +125°C | °C | |
| Supply Voltages (VDD1, VDD2) | 3.0 V | 20 V | V | |
| Bandwidth | 400 kHz | |||
| Isolation Voltage | 2.5 kV rms | |||
| Output Voltage (EAOUT) | ±3 mA | mA | ||
| Output Voltage (EAOUT2) | ±1 mA | mA | ||
| Noise (EAOUT) | 1.7 mV rms | mV | ||
| Noise (EAOUT2) | 4.8 mV rms | mV | ||
| Input-to-Output Capacitance (CI-O) | 2.2 pF | pF | ||
| Input Capacitance (CI) | 4.0 pF | pF | ||
| Junction-to-Ambient Thermal Resistance (θJA) | 76 °C/W | °C/W |
Key Features
- High stability and accuracy over a wide temperature range (−40°C to +125°C)
- Wideband operational amplifier for various power supply loop compensation techniques
- High accuracy 1.225 V reference voltage
- Low power operation: less than 7 mA total current
- Wide voltage supply range: 3 V to 20 V for both VDD1 and VDD2
- 2.5 kV rms isolation voltage rating
- Qualified for automotive applications and meets various safety and regulatory approvals (UL, CSA, VDE)
- Packaged in a small 16-lead QSOP package
Applications
- Linear feedback power supplies
- Shunt regulators
- Inverters
- UPS (Uninterruptible Power Supplies)
- Automotive power systems
- Industrial power supplies requiring high isolation and stability
Q & A
- What is the primary application of the ADuM3190WTRQZ-RL7?
The ADuM3190WTRQZ-RL7 is primarily used in linear feedback power supplies.
- What is the isolation voltage rating of the ADuM3190WTRQZ-RL7?
The isolation voltage rating is 2.5 kV rms.
- What is the operating temperature range of the ADuM3190WTRQZ-RL7?
The operating temperature range is −40°C to +125°C.
- What is the bandwidth of the ADuM3190WTRQZ-RL7?
The bandwidth is up to 400 kHz.
- What type of package does the ADuM3190WTRQZ-RL7 come in?
The component is packaged in a 16-lead QSOP package.
- Does the ADuM3190WTRQZ-RL7 meet any specific safety and regulatory approvals?
Yes, it meets UL, CSA, and VDE safety and regulatory approvals.
- What is the total current consumption of the ADuM3190WTRQZ-RL7?
The total current consumption is less than 7 mA.
- What is the reference voltage provided by the ADuM3190WTRQZ-RL7?
The reference voltage is 1.225 V.
- Is the ADuM3190WTRQZ-RL7 suitable for automotive applications?
Yes, it is qualified for automotive applications.
- What are some of the key advantages of using the ADuM3190WTRQZ-RL7 over optocoupler-based solutions?
The ADuM3190WTRQZ-RL7 offers stable and accurate signal transmission over its lifetime and across a wide temperature range, unlike optocoupler-based solutions.
