ADUM3191ARWZ-RL7 - Isolated Error Amplifier | Analog Devices
MPN: ADUM3191ARWZ-RL7 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.19 | $519.00 |
| 500 | $4.97 | $2,485.00 |
| 1,000 | $4.75 | $4,750.00 |
Drop-in alternatives for ADUM3191ARWZ-RL7 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADUM3191BRWZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
ADUM3191TRWZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
ADUM3191WTRWZ-RL7
β Drop-Inπ Reference alternative (not in catalog)
ADUM3191ARWZ-RL7 Maximum Ratings & Electrical Characteristics
| Product Type | Isolator, Error Amplifier IC |
| Number of Channels | 1 |
| Isolation Technology | iCoupler |
| Package | 16-Lead SOIC-W (RWZ) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | [DATA_NEEDED: exact temperature range for ADUM3191ARWZ-RL7] |
| Supply Voltage Range | [DATA_NEEDED: supply voltage range] |
| Isolation Voltage | [DATA_NEEDED: isolation voltage rating for ADUM3191ARWZ-RL7] |
| Bandwidth | [DATA_NEEDED: error amplifier bandwidth] |
| Reference Voltage | [DATA_NEEDED: internal reference voltage] |
| Common-Mode Transient Immunity (CMTI) | [DATA_NEEDED: CMTI specification] |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
| Quiescent Current | [DATA_NEEDED: quiescent current] |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Lead Free | [DATA_NEEDED: lead-free status] |
| AEC-Q100 | Not qualified (standard commercial grade) |
| MSL Level | [DATA_NEEDED: moisture sensitivity level] |
ADUM3191ARWZ-RL7 16-lead soic-w (rwz) Pin Configuration Guide
Complete pinout information for ADUM3191ARWZ-RL7 (16-lead soic-w (rwz) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for ADUM3191ARWZ-RL7.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADUM3191ARWZ-RL7 is suitable for 6 applications: Isolated Switch-Mode Power Supply Feedback, Solar Inverter Output Voltage Loop, Uninterruptible Power Supply (UPS) Regulation, Industrial Linear Power Supplies, Motor Drive and VFD DC-Link Feedback, Battery Charger Voltage Monitoring.
Isolated Switch-Mode Power Supply Feedback
The ADUM3191ARWZ-RL7 provides isolated voltage feedback for switch-mode power supplies. Its internal error amplifier compares the output divider signal to a precision reference and transmits the corrected error signal across the iCoupler barrier, eliminating optocoupler aging drift. For a 48 V bus with a 5 V output, the amplifier can regulate while maintaining galvanic isolation between primary and secondary. Place a small RC compensation network around the feedback pin to set crossover; the measured loop gain remains stable over temperature. This integrated solution reduces component count versus discrete isolator-plus-shunt-regulator designs.
Recommended
Solar Inverter Output Voltage Loop
ADUM3191ARWZ-RL7 fits solar PV inverter control loops by sensing DC-bus or output voltage on the isolated secondary and returning an error current to the primary controller. iCoupler technology yields high common-mode transient immunity, which is critical when the inverter bridge switches at high dV/dt. The wide 16-lead SOIC-W package provides PCB creepage for reinforced isolation designs. Use this part in place of optocouplers to reduce gain drift over temperature and operating life, improving the consistency of maximum power point tracking and grid-tie voltage regulation.
Recommended
Uninterruptible Power Supply (UPS) Regulation
In UPS systems, the isolated error amplifier monitors battery or inverter output voltage while keeping the control stage isolated from the high-voltage power stage. The ADUM3191ARWZ-RL7 provides a single-channel feedback path from the isolated output to the PWM controller, enabling tight regulation of AC inverter output and battery charger sections. The iCoupler architecture avoids the CTR degradation seen in optocoupler-based feedback. Designers should confirm the isolation voltage and working voltage requirements of the UPS standard being targeted and maintain adequate creepage around the SOIC-W package.
Recommended
Industrial Linear Power Supplies
For analog audio, instrumentation, and industrial linear supplies, the ADUM3191ARWZ-RL7 provides low-noise feedback without the current-transfer-ratio drift of optocouplers. The integrated error amplifier can be configured with external divider resistors to set the regulated output voltage. Because the part is a monolithic iCoupler device, it offers stable gain over temperature, reducing output drift in precision lab supplies and industrial power rails. Keep the feedback network connections short and use low-leakage ceramic capacitors to avoid injecting noise into the high-impedance sense node.
Recommended
Motor Drive and VFD DC-Link Feedback
In variable-frequency drives and motor drives, the ADUM3191ARWZ-RL7 transmits the DC-link voltage error across the isolation barrier to the control circuit. This allows the controller to regulate the bus voltage without a direct ohmic connection to the high-voltage power stage. The iCoupler structure provides robust behavior under the high common-mode switching transients generated by IGBT or SiC inverters. Place the part with adequate clearance to high-voltage traces and follow the manufacturer's layout guidance for isolation barrier creepage to ensure reliable operation in industrial environments.
Recommended
Battery Charger Voltage Monitoring
The ADUM3191ARWZ-RL7 is well-suited to isolated battery charger feedback, where the output voltage must be regulated on the secondary side while the primary controller remains galvanically isolated. The integrated error amplifier compares the charger output to a precision reference and sends a corrected error signal across the iCoupler barrier. This architecture reduces component count and improves stability compared to discrete shunt-regulator and optocoupler combinations. Use tight-tolerance divider resistors for accurate charging voltage setpoints, and verify the reference accuracy of the chosen grade for the target charging profile.
Recommended
Recommended Products Summary
Engineering reference data for ADUM3191ARWZ-RL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM3191BRWZ-RL7 | ADUM3191TRWZ-RL7 | ADUM3191WTRWZ-RL7 |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-Lead SOIC-W (RWZ) | 16-Lead SOIC-W (RWZ) | 16-Lead SOIC-W (RWZ) | 16-Lead SOIC-W (RWZ) |
| Accuracy Grade | Standard Commercial (A) | Higher Grade (B) | Extended Temperature (T) | Automotive (WT) |
| Operating Temperature Range | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED: extended temperature range] | [DATA_NEEDED: automotive temperature range] |
| Isolation Voltage | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Supply Voltage Range | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Reference Voltage | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Isolation Technology | iCoupler chip-scale transformer | iCoupler | iCoupler | iCoupler |
Key Differentiators
- iCoupler technology avoids optocoupler CTR degradation (vs Discrete optocoupler + shunt regulator feedback)
- SOIC-W package provides more PCB creepage than QSOP alternatives (vs ADUM3190ARQZ-RL7)
- Drop-in family compatibility across A, B, T, and WT grades (vs ADUM3191BRWZ-RL7 / ADUM3191TRWZ-RL7)
Design Notes
For isolated error amplifier layouts, maintain strict creepage and clearance distances across the isolation barrier under the 16-lead SOIC-W package. Do not route high-voltage or fast-slewing traces under the body of the ADUM3191ARWZ-RL7. Split the ground planes at the barrier and place a slot in the PCB below the package to increase effective creepage. Follow the isolation voltage and pollution degree requirements from the ADuM3190/ADuM3191 datasheet for the target safety standard.
The error amplifier feedback path is a high-impedance node. Keep the resistor divider and compensation components physically close to the device and use short traces to avoid parasitic capacitance and noise pickup. A small ceramic capacitor across the feedback resistor can help band-limit high-frequency noise, but it also affects loop crossover; select the value based on the target phase margin. For best stability, simulate the loop with the actual compensation network and isolation barrier parasitics.
Do not assume the ADUM3191ARWZ-RL7 isolation rating matches the 16-lead QSOP ADuM3190ARQZ-RL7. The package change to SOIC-W can affect isolation voltage, clearance, and thermal performance. Always verify the exact reference voltage, bandwidth, quiescent current, and temperature range from the latest ADuM3191 datasheet. Also confirm that the -RL7 tape-and-reel quantity and MSL level are compatible with your assembly line's moisture-bake requirements.
Compliance Information
Compliance status for ADUM3191ARWZ-RL7 was not present in the provided web data. Confirm RoHS/REACH status from the Analog Devices product page or datasheet before production.
