ADUM3191ARWZ-RL7 - Isolated Error Amplifier | Analog Devices
N.º de pieza: ADUM3191ARWZ-RL7 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 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 |
ADUM3191ARWZ-RL7 Descripción general
An isolated error amplifier is a specialized analog building block that compares a feedback voltage on one side of an isolation barrier with an internal reference and transmits a corrected error signal to the other side across the barrier. In the system hierarchy, it sits between the power-stage output and the PWM controller, replacing the optocoupler-plus-shunt-regulator feedback network. This category supports linear power supplies, inverters, UPS systems, DOSA-compatible modules, and voltage monitors.
Key features include the monolithic iCoupler isolation interface, a small 16-lead SOIC-W surface-mount body, industrial operating temperature options, and integration of the error amplifier and isolation in a single component. The ADuM3190 family datasheet documents the architecture used for both QSOP and SOIC-W versions, and the -RL7 suffix indicates 2500-unit tape-and-reel packaging.
Technical depth: iCoupler technology uses chip-scale transformers rather than LEDs and photodetectors, offering stable gain over temperature and age. Because the isolation barrier is integrated, no external high-voltage capacitor or optocoupler biasing circuit is required. This makes the ADUM3191ARWZ-RL7 particularly attractive for compact power modules where feedback-loop accuracy and long-term reliability are critical.
Typical applications include isolated feedback for AC-DC and DC-DC supplies, solar inverter output voltage loops, UPS output regulation, industrial linear power supplies, motor-drive DC-link feedback, and battery charger voltage monitoring. Designers should confirm the exact isolation rating, reference voltage, and bandwidth for the ADUM3191ARWZ-RL7 from the latest ADuM3190/ADuM3191 datasheet before finalizing the design.
Alternativas directas para ADUM3191ARWZ-RL7 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADUM3191BRWZ-RL7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ADUM3191TRWZ-RL7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ADUM3191WTRWZ-RL7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ADUM3191ARWZ-RL7 Valores máximos y características eléctricas
| Product Type | Isolator, Error Amplifier IC |
| Number of Channels | 1 |
| Isolation Technology | iCoupler |
| Encapsulado | 16-Lead SOIC-W (RWZ) |
| Tipo de montaje | Surface Mount |
| AEC-Q100 | Not qualified (standard commercial grade) |
Guía de configuración de pines de ADUM3191ARWZ-RL7 16-lead soic-w (rwz)
Configuración de pines para ADUM3191ARWZ-RL7 (encapsulado 16-lead soic-w (rwz)). Este componente analógico presenta pines de entrada, salida y alimentación. Consulte la hoja de datos del fabricante para conocer las configuraciones de los pines de ajuste de offset, compensación y habilitación. Ideal para circuitos de acondicionamiento de señal y amplificadores.
No hay datos detallados de patillaje disponibles para ADUM3191ARWZ-RL7.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ADUM3191ARWZ-RL7 es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADUM3191ARWZ-RL7 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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) |
| Isolation Technology | iCoupler chip-scale transformer | iCoupler | iCoupler | iCoupler |
Diferenciadores clave
- iCoupler technology avoids optocoupler CTR degradation (frente a Discrete optocoupler + shunt regulator feedback)
- SOIC-W package provides more PCB creepage than QSOP alternatives (frente a ADUM3190ARQZ-RL7)
- Drop-in family compatibility across A, B, T, and WT grades (frente a ADUM3191BRWZ-RL7 / ADUM3191TRWZ-RL7)
Notas de diseño
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.
Información de cumplimiento
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.
