Overview
The ADuM3190SRQZ-RL7 is a high stability isolated error amplifier produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, providing reliable and stable performance in various power supply applications. It is particularly suited for linear feedback power supplies, inverters, uninterruptible power supplies (UPS), and DOSA-compatible modules. The ADuM3190 offers significant improvements over traditional optocoupler and shunt regulator solutions, including a stable transfer function over a wide temperature range of −40°C to +125°C and a high accuracy 1.225 V reference voltage.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Range, Side 1 (VDD1) | 3.0 | 20 | V | ||
| Operating Range, Side 2 (VDD2) | 3.0 | 20 | V | ||
| Bandwidth | 400 kHz | ||||
| Isolation Voltage | 2.5 kV rms | ||||
| Supply Current (IDD1) | 1.4 | 2.0 | mA | See Figure 4 | |
| Supply Current (IDD2) | 2.9 | 5.0 | mA | See Figure 5 | |
| Input Offset Voltage (Vos) | 2.5 mV | ||||
| Common Mode Rejection Ratio | 72 dB | ||||
| Gain Bandwidth Product | 10 MHz | ||||
| Input Bias Current | 10 nA | ||||
| Output Voltage, EAOUT | ±3 mA | Low Voltage: 0.4 V, High Voltage: 2.4-2.7 V | |||
| Output Voltage, EAOUT2 | ±1 mA | Low Voltage: 0.3-0.6 V, High Voltage: 4.8-5.4 V |
Key Features
- High stability and accuracy with a 1.225 V reference voltage.
- Wide voltage supply range: VDD1 and VDD2 from 3 V to 20 V.
- Low power operation: Total current consumption less than 7 mA.
- High bandwidth: Up to 400 kHz.
- Isolation voltage rating of 2.5 kV rms.
- Wide temperature range: −40°C to +125°C ambient operation.
- Qualified for automotive applications.
- Compact 16-lead QSOP package.
- Compatible with Type II or Type III compensation networks.
Applications
- Linear power supplies.
- Inverters.
- Uninterruptible Power Supply (UPS).
- DOSA-compatible modules.
- Voltage monitors.
- Automotive systems.
Q & A
- What is the ADuM3190SRQZ-RL7 used for? The ADuM3190SRQZ-RL7 is used in linear feedback power supplies, inverters, UPS, and other applications requiring high stability and isolation.
- What is the operating temperature range of the ADuM3190SRQZ-RL7? The operating temperature range is −40°C to +125°C.
- What is the isolation voltage rating of the ADuM3190SRQZ-RL7? The isolation voltage rating is 2.5 kV rms.
- What is the bandwidth of the ADuM3190SRQZ-RL7? The bandwidth is up to 400 kHz.
- What is the power supply range for the ADuM3190SRQZ-RL7? The power supply range for both VDD1 and VDD2 is from 3 V to 20 V.
- Is the ADuM3190SRQZ-RL7 suitable for automotive applications? Yes, it is qualified for automotive applications.
- What is the package type of the ADuM3190SRQZ-RL7? It is packaged in a 16-lead QSOP package.
- What is the common mode rejection ratio of the ADuM3190SRQZ-RL7? The common mode rejection ratio is 72 dB.
- What is the gain bandwidth product of the ADuM3190SRQZ-RL7? The gain bandwidth product is 10 MHz.
- What is the input bias current of the ADuM3190SRQZ-RL7? The input bias current is 10 nA.
