ADUM1447ARWZ - Micropower Quad-Channel Digital Isolator | Analog Devices
N.º da peça: ADUM1447ARWZ ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.47 | $8,47 |
| 10 | $7.8 | $78,00 |
| 100 | $6.9 | $690,00 |
| 500 | $6.2 | $3.100,00 |
| 1.000 | $5.6 | $5.600,00 |
ADUM1447ARWZ Visão geral
Digital isolators are essential components in systems that require signal transfer across an isolation barrier to protect sensitive electronics from high voltages, noise, or ground potential differences. They replace optocouplers in many applications, offering higher speed, lower power consumption, and better reliability. The ADUM1447ARWZ belongs to the family of digital isolators, which are part of the broader category of interface ICs, used to transmit digital signals while providing electrical isolation.
Key features of the ADUM1447ARWZ include its micropower operation, with a typical quiescent current of less than 10 µA per channel when internal refresh is enabled, and less than 1 µA per channel when disabled. This makes it ideal for battery-powered or energy-harvesting systems. The device also features a wide operating temperature range of -40°C to +125°C, ensuring reliable performance in harsh environments. The package is a 16-lead SOIC-W (wide body), which is suitable for surface-mount assembly.
Technically, the ADUM1447ARWZ uses Analog Devices' iCoupler technology, which combines high-speed CMOS and monolithic transformer isolation. This architecture provides superior performance compared to optocouplers, including higher data rates, lower power consumption, and better timing accuracy. The device supports two unidirectional channels in one direction and two in the other, offering flexibility in various signal routing configurations. The internal refresh mechanism ensures that the output state is maintained even when the input is static, preventing data corruption.
Typical applications include industrial fieldbus communication, isolated SPI interfaces, data acquisition systems, and medical equipment where patient safety requires galvanic isolation. The low power consumption and high CMTI make it particularly suitable for portable and battery-operated devices. In addition, the device is compatible with standard CMOS logic levels, simplifying integration with microcontrollers and other digital ICs.
When designing with the ADUM1447ARWZ, it is important to ensure proper power supply decoupling on both sides of the isolation barrier. Use 0.1 µF ceramic capacitors close to the VDD1 and VDD2 pins to minimize noise. Also, consider the maximum data rate and CMTI requirements of your application to ensure reliable operation.
Alternativas drop-in para ADUM1447ARWZ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ADUM1447ARWZ (mesmo formato e footprint) — diferindo em Package, Supply Voltage (VDD1/VDD2), Current per Channel (ENx=0), Current per Channel (ENx=1), Default Output State.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ADUM1447ARSZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADUM1447BRWZ
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
ADUM1447ARWZ-RL7
✅ Drop-In✓ Em estoque
$5.5 / unidade
Ver ficha técnica →ADUM1447ARSZ-RL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ADUM1447ARWZ Especificações
| Number of Channels | 4 |
| Isolation Voltage | 2500 Vrms |
| Taxa de dados | 2 Mbps |
| 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 |
| Quiescent Current per Channel (ENx=0) | <10 µA |
| Quiescent Current per Channel (ENx=1) | <1 µA |
| Faixa de temperatura de operação | -40°C to +125°C |
| Encapsulamento | 16-Lead SOIC-W (wide body) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do ADUM1447ARWZ
| Pino 1 | VDD1 — Supply voltage for side 1 |
| Pino 2 | GND1 — Ground for side 1 |
| Pino 3 | VIA — Input channel A (side 1) |
| Pino 4 | VIB — Input channel B (side 1) |
| Pino 5 | VOC — Output channel C (side 1) |
| Pino 6 | VOD — Output channel D (side 1) |
| Pino 7 | EN1 — Enable for side 1 (active high) |
| Pino 8 | NC — No connect |
| Pino 9 | NC — No connect |
| Pino 10 | EN2 — Enable for side 2 (active high) |
| Pino 11 | VOD — Output channel D (side 2) |
| Pino 12 | VOC — Output channel C (side 2) |
| Pino 13 | VIB — Input channel B (side 2) |
| Pino 14 | VIA — Input channel A (side 2) |
| Pino 15 | GND2 — Ground for side 2 |
| Pino 16 | VDD2 — Supply voltage for side 2 |
Aplicações típicas
ADUM1447ARWZ é adequado para 6 aplicaçãos: Industrial Fieldbus Communication, Isolated SPI Interface, Medical Equipment Isolation, Battery-Powered IoT Devices, Data Acquisition Systems, Isolated Power Supply Control.
Industrial Fieldbus Communication
The ADUM1447ARWZ provides galvanic isolation for industrial fieldbus interfaces such as RS-485, CAN, and PROFIBUS. Its 2500 Vrms isolation and 25 kV/µs CMTI ensure reliable data transmission in noisy industrial environments with motor drives and high-voltage switching. The low quiescent current (<10 µA per channel) minimizes power dissipation in remote I/O modules, and the 2 Mbps data rate supports standard fieldbus protocols. The device isolates the controller side from the transceiver side, preventing ground loops and protecting sensitive logic from transient surges. Its wide operating temperature range (-40°C to +125°C) suits harsh factory floor conditions. For a complete isolated RS-485 interface, pair it with a transceiver like the ADM2483BRWZ, which is available on XAIPART.
Recomendado
Isolated SPI Interface
The ADUM1447ARWZ is ideal for isolating SPI buses between microcontrollers and peripheral devices such as ADCs, DACs, and sensors. Its four channels can be configured to isolate the clock, data in, data out, and chip select signals. The 2 Mbps data rate is sufficient for most SPI applications, and the low propagation delay ensures minimal timing skew. The micropower operation is beneficial for battery-powered sensor nodes. The device's high CMTI prevents data corruption from fast transients in industrial environments. For a complete isolated data acquisition system, pair it with a precision ADC like the AD7172-2BRUZ, which is available on XAIPART.
Recomendado
Medical Equipment Isolation
The ADUM1447ARWZ provides the galvanic isolation required for patient safety in medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its 2500 Vrms isolation rating meets the basic insulation requirements for many medical standards. The low power consumption is critical for battery-operated portable devices. The device isolates the patient-connected sensors from the main control unit, preventing leakage currents and ensuring safe operation. The wide temperature range and high reliability make it suitable for continuous operation. For a complete isolated signal chain, pair it with an instrumentation amplifier like the AD8429ARZ, which is available on XAIPART.
Recomendado
Battery-Powered IoT Devices
The ADUM1447ARWZ is perfect for IoT devices that require isolation between low-power sensors and a central processor. Its micropower operation (<10 µA per channel) extends battery life, making it ideal for wireless sensor nodes and wearable devices. The 2 Mbps data rate is sufficient for sensor data transmission, and the small SOIC-W package fits compact designs. The device's high CMTI ensures reliable operation in environments with electromagnetic interference. For a complete IoT solution, pair it with a low-power microcontroller and a wireless module. The ADUM1447ARWZ can isolate the sensor interface from the radio, preventing noise coupling.
Recomendado
Data Acquisition Systems
The ADUM1447ARWZ is used in data acquisition systems to isolate analog front-ends from digital processing units. It prevents ground loops and reduces noise, ensuring accurate measurement of small signals. The device's four channels can isolate multiple digital signals, such as ADC control lines and data outputs. The 2 Mbps data rate supports high-speed sampling, and the low power consumption is beneficial for multi-channel systems. The high CMTI ensures reliable operation in industrial environments with high-voltage switching. For a complete DAQ system, pair it with a high-resolution ADC like the AD7175-8BCPZ, which is available on XAIPART.
Recomendado
Isolated Power Supply Control
The ADUM1447ARWZ can be used to isolate control signals in power supply applications, such as digital power controllers and isolated DC-DC converters. It provides feedback isolation for voltage and current monitoring, ensuring safe operation. The device's low power consumption is beneficial for efficiency, and its high CMTI prevents false triggering from switching transients. The 2 Mbps data rate is sufficient for control loop updates. For a complete isolated power solution, pair it with a digital power controller like the LTC3882-1#PBF, which is available on XAIPART.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ADUM1447ARWZ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ADUM1447ARSZ | ADUM1447ARQZ | ADUM1447BRWZ | ISO7741DW |
|---|---|---|---|---|---|
| Package | 16-Lead SOIC-W | 16-Lead SOIC-W | 16-Lead QSOP | 16-Lead SOIC-W | SOIC-16 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 3000 Vrms |
| Data Rate | 2 Mbps | 2 Mbps | 2 Mbps | 150 Mbps | 100 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Supply Voltage Range | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 5.5V | 2.25V to 5.5V |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -55°C to +125°C |
Principais diferenciais
- Ultra-low power consumption (vs ISO7741DW)
- Same-brand drop-in compatibility (vs ADUM1447ARSZ)
- Micropower with high CMTI (vs ADUM1447BRWZ)
Notas de projeto
Ensure both VDD1 and VDD2 are within the specified range of 3.0V to 3.6V. Use 0.1 µF ceramic capacitors close to each supply pin to decouple high-frequency noise. For optimal performance, place a 10 µF bulk capacitor on each side if the supply is shared with other components. The micropower operation means that the quiescent current is very low, but transient currents during switching can cause voltage dips if decoupling is inadequate.
Maintain proper creepage and clearance distances under the SOIC-W package to achieve the 2500 Vrms isolation rating. Use a PCB with at least 0.4 mm creepage for basic isolation, and increase for reinforced isolation. Avoid running traces under the isolator that could reduce isolation. Place the device on the boundary between the isolated and non-isolated areas, and use a slot or cutout in the PCB to enhance isolation.
Do not leave the enable pins (EN1, EN2) floating. Tie them to the respective supply voltage to enable the channels, or to ground to disable them. Floating inputs can cause unpredictable behavior. Also, ensure that the input signals do not exceed the supply voltage range, as this can damage the device. For high-speed signals, keep the traces short and use proper termination to avoid reflections.
Informações de conformidade
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free per datasheet.
