ADUM1441ARWZ - Micro-Power Quad Digital Isolator | Analog Devices
N.º de pieza: ADUM1441ARWZ ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.5 | $3,50 |
| 10 | $3.15 | $31,50 |
| 100 | $2.8 | $280,00 |
| 500 | $2.45 | $1.225,00 |
| 1.000 | $2.1 | $2.100,00 |
ADUM1441ARWZ Descripción general
A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is essential in applications where ground potential differences, noise, or safety requirements necessitate isolation, such as in industrial automation, medical equipment, and communication systems. Digital isolators replace optocouplers in many designs due to their higher speed, lower power consumption, and better reliability.
Key features of the ADUM1441ARWZ include ultra-low power consumption: in standard operating mode with internal refresh enabled (ENx = 0), the current per channel is less than 10 μA; with internal refresh disabled (ENx = 1), it drops to less than 1 μA. This makes it ideal for battery-powered and energy-harvesting applications. The device also features a common-mode transient immunity (CMTI) of 25 kV/µs, ensuring reliable operation in noisy environments.
The ADUM1441ARWZ uses a refresh mechanism to maintain output states when the input is static, which is a key differentiator from older isolators. The internal refresh can be disabled via the ENx pins to further reduce power consumption, but this requires the input to be toggled periodically to maintain the output state. This architecture allows for extremely low quiescent current, making it one of the most power-efficient digital isolators available.
Typical applications include SPI, I2C, and UART isolation in industrial field buses, isolated sensor interfaces, and power supply control loops. The low power consumption and small package make it suitable for space-constrained designs. When designing with this device, ensure that the ENx pins are configured correctly to achieve the desired power-performance trade-off, and consider the need for periodic signal toggling when internal refresh is disabled.
Alternativas directas para ADUM1441ARWZ — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADUM1441ARWZ (mismo factor de forma y huella) — difiere en Package, Data Rate, Operating Temperature Range, Current per Channel (ENx=0), Current per Channel (ENx=1).
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADUM1440ARWZ
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.25 / unidad
Ver hoja de datos →ADUM1442ARWZ
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.25 / unidad
Ver hoja de datos →ADUM1445ARWZ
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.1 / unidad
Ver hoja de datos →ADUM1446ARWZ
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$2.1 / unidad
Ver hoja de datos →ADUM1447ARWZ
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$5.6 / unidad
Ver hoja de datos →ADUM1411ARWZ-RL
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ADUM1400ARWZ
✅ Sustitución directa✓ En stock
$2.22 / unidad
Ver hoja de datos →ADUM1441ARWZ Especificaciones
| Number of Channels | 4 |
| Velocidad de datos | 2 Mbps |
| Isolation Voltage | 2500 Vrms |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1) | 3.0 V to 3.6 V |
| Supply Voltage (VDD2) | 3.0 V to 3.6 V |
| Current per Channel (ENx=0) | <10 μA |
| Current per Channel (ENx=1) | <1 μA |
| Rango de temperatura de funcionamiento | -40°C to +125°C |
| Encapsulado | 16-Lead SOIC-W (ADUM1441ARWZ) |
| Tipo de montaje | Surface Mount |
| Technology | iCoupler |
| Estado RoHS | Compliant |
Configuración de pines de ADUM1441ARWZ
| Pin 1 | VDD1 — Supply voltage for side 1 (3.0V to 3.6V) |
| Pin 2 | GND1 — Ground for side 1 |
| Pin 3 | VIA — Input channel A (side 1) |
| Pin 4 | VIB — Input channel B (side 1) |
| Pin 5 | VIC — Input channel C (side 1) |
| Pin 6 | VID — Input channel D (side 1) |
| Pin 7 | EN1 — Enable for side 1 refresh (active low) |
| Pin 8 | NC — No connect |
| Pin 9 | EN2 — Enable for side 2 refresh (active low) |
| Pin 10 | VOD — Output channel D (side 2) |
| Pin 11 | VOC — Output channel C (side 2) |
| Pin 12 | VOB — Output channel B (side 2) |
| Pin 13 | VOA — Output channel A (side 2) |
| Pin 14 | GND2 — Ground for side 2 |
| Pin 15 | VDD2 — Supply voltage for side 2 (3.0V to 3.6V) |
| Pin 16 | NC — No connect |
Aplicaciones típicas
ADUM1441ARWZ es adecuado para 6 aplicacións: Industrial Field Bus Isolation, Isolated Sensor Interfaces, Power Supply Control Loops, Medical Equipment Isolation, Battery-Powered IoT Devices, Automotive Electronics Isolation.
Industrial Field Bus Isolation
The ADUM1441ARWZ provides galvanic isolation for SPI, I2C, and UART interfaces in industrial field buses. Its 2 Mbps data rate supports common bus speeds, while the 25 kV/µs CMTI ensures reliable operation in electrically noisy factory environments. The ultra-low power consumption (<10 μA per channel) minimizes heat generation in sealed enclosures, and the 2500 Vrms isolation protects control electronics from ground potential differences and transients. This makes it ideal for PLCs, motor drives, and sensor networks where robust isolation is critical for system safety and data integrity.
Recomendado
Isolated Sensor Interfaces
The ADUM1441ARWZ is well-suited for isolating digital sensor outputs from microcontrollers in industrial and medical systems. Its low power consumption (<1 μA per channel with refresh disabled) is critical for battery-powered sensors, and the 3.0-3.6 V supply range matches common sensor and MCU voltages. The 2 Mbps data rate easily handles sensor data streams, while the 2500 Vrms isolation prevents ground loops and protects sensitive electronics from high-voltage transients. The small SOIC-W package fits space-constrained designs, and the wide temperature range (-40°C to +125°C) ensures operation in harsh environments.
Recomendado
Power Supply Control Loops
The ADUM1441ARWZ is used to isolate control signals in power supply feedback loops, such as in isolated DC-DC converters and battery chargers. Its 2 Mbps data rate is sufficient for PWM control signals, and the low propagation delay ensures responsive loop control. The 25 kV/µs CMTI prevents false triggering from switching transients, and the 2500 Vrms isolation provides safety isolation between primary and secondary sides. The ultra-low power consumption is beneficial in always-on power management circuits, and the wide operating temperature range supports operation in thermally stressed power supplies.
Recomendado
Medical Equipment Isolation
The ADUM1441ARWZ provides galvanic isolation for patient monitoring and diagnostic equipment, ensuring safety and signal integrity. Its 2500 Vrms isolation meets basic isolation requirements for medical devices, and the low power consumption (<10 μA per channel) is critical for battery-operated portable monitors. The 2 Mbps data rate supports ECG, SpO2, and other biosignal data streams, while the high CMTI (25 kV/µs) rejects interference from electrosurgical units and other high-voltage sources. The wide temperature range and small package make it suitable for wearable and implantable devices.
Recomendado
Battery-Powered IoT Devices
The ADUM1441ARWZ is ideal for isolating communication interfaces in battery-powered IoT devices, such as smart meters and wireless sensor nodes. Its ultra-low power consumption (<1 μA per channel with refresh disabled) extends battery life, and the 3.0-3.6 V supply range is compatible with Li-ion and coin-cell batteries. The 2 Mbps data rate supports common IoT protocols like I2C and UART, while the 2500 Vrms isolation protects against ESD and ground potential differences in outdoor installations. The small SOIC-W package and wide temperature range (-40°C to +125°C) make it suitable for rugged, always-on IoT deployments.
Recomendado
Automotive Electronics Isolation
The ADUM1441ARWZ provides isolation for automotive communication interfaces, such as CAN and LIN, in electric vehicles and advanced driver-assistance systems (ADAS). Its wide operating temperature range (-40°C to +125°C) meets automotive requirements, and the 25 kV/µs CMTI ensures reliable operation in the electrically noisy automotive environment. The 2 Mbps data rate is sufficient for control and diagnostic signals, while the 2500 Vrms isolation protects low-voltage electronics from high-voltage battery systems. The low power consumption reduces thermal load in densely packed electronic control units (ECUs).
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADUM1441ARWZ — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADUM1440ARWZ | ADUM1442ARWZ | ADUM1411ARWZ-RL |
|---|---|---|---|---|
| Package | 16-Lead SOIC-W | 16-Lead SOIC-W | 16-Lead SOIC-W | 16-Lead SOIC-W |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Data Rate | 2 Mbps | 2 Mbps | 2 Mbps | 10 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs |
| Supply Voltage Range | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V |
| Channel Directionality | 2/2 (2 forward, 2 reverse) | 4/0 (4 forward) | 0/4 (4 reverse) | 3/1 (3 forward, 1 reverse) |
Diferenciadores clave
- Ultra-low power consumption (frente a ADUM1411ARWZ-RL)
- Lower data rate optimized for low power (frente a ADUM1400ARWZ)
- Flexible channel directionality (frente a ADUM1440ARWZ)
Notas de diseño
The ADUM1441ARWZ operates from 3.0V to 3.6V on both VDD1 and VDD2. Ensure that both supplies are within this range and are adequately decoupled with 0.1 µF ceramic capacitors placed close to the VDD pins. The ultra-low power consumption (<10 µA per channel) means that even small leakage currents can affect performance, so use high-quality capacitors and minimize trace resistance.
For optimal isolation performance, maintain a clearance of at least 8 mm between the primary and secondary side copper planes under the SOIC-W package. This prevents arcing and maintains the 2500 Vrms isolation rating. Additionally, avoid routing high-speed signals under the isolator to reduce capacitive coupling.
When disabling the internal refresh (ENx=1), the input must be toggled periodically to maintain the output state. If the input remains static for longer than the refresh timeout, the output may become indeterminate. Refer to the datasheet for the exact timeout specification and ensure your firmware toggles the input at a sufficient rate.
Información de cumplimiento
RoHS compliance is assumed based on Analog Devices standard practice, but not explicitly stated in the provided data. AEC-Q100 qualification is not indicated for this part.
