ADUM3201ARZ - Dual-Channel Digital Isolator, 1Mbps, 2.5kV | Analog Devices
Артикул: ADUM3201ARZ ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.95 | $3,95 |
| 10 | $3.55 | $35,50 |
| 100 | $2.98 | $298,00 |
| 500 | $2.65 | $1.325,00 |
| 1.000 | $2.3 | $2.300,00 |
ADUM3201ARZ Обзор
What is a digital isolator? A digital isolator is a semiconductor device that transmits logic-level signals across a galvanically-isolated barrier (no conductive path between input and output) using either magnetic (transformer-based iCoupler), capacitive, or optical (LED + photodiode) coupling. Digital isolators occupy the 'isolation' tier within the power management / signal integrity hierarchy, sitting between general-purpose logic and the broader category of interface ICs. The principal figure-of-merit is working voltage (kVrms), supplemented by CMTI (kV/us) and data rate (Mbps).
Key features of the ADUM3201ARZ include two independent isolation channels supporting unidirectional (default) or reverse channel configurations, 3.3V/5V level translation across the isolation barrier, low dynamic power consumption proportional to data rate, and -40C to +125C industrial operating temperature range. The 25kV/us CMTI rating exceeds typical optocoupler specifications (often 1-10 kV/us), making it well suited to high-noise motor-drive and power-converter environments where fast transients can corrupt logic.
The ADuM3201 architecture uses wafer-level transformers with CMOS drivers and receivers, yielding deterministic propagation delay around 150ns and channel-to-channel matching typically within 5ns. Because no DC path crosses the isolation, the device exhibits superior long-term reliability versus optocouplers whose LED-output CTR degrades over thousands of hours.
Typical applications include isolated SPI/UART interfaces in industrial PLCs, gate-drive signal isolation for IGBT/MOSFET half-bridges, isolated ADC front-ends in data-acquisition systems, isolated USB/RS-485 transceivers, and medical equipment requiring 2.5kV patient-isolation. The wide-body SOIC-8 footprint and pin-out matches standard 8-pin optocouplers, enabling retrofit upgrades with no PCB changes.
When designing with the ADuM3201ARZ, decouple each VDD pin with a 0.1uF ceramic capacitor placed within 2mm of the supply pin; insufficient decoupling can degrade CMTI performance. The device requires no external driver components - unlike optocouplers which need LED current-limit resistors - simplifying BOM count.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - giving engineers a single reference for the ADUM3201ARZ.
Аналоги без доработки для ADUM3201ARZ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ADUM3201ARZ (тот же форм-фактор и посадочное место) — отличается по Common-Mode Transient Immunity (CMTI), Package, RoHS Status, Channel Configuration, Number of Channels.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ADUM3200ARZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADUM3201ARZ-RL7
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADUM3201CRZ
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
SI8422BB-D-IS
✅ Прямая замена✓ В наличии
$1.52 / шт.
Открыть даташит →SI8442AB-C-IS
✅ Прямая замена✓ В наличии
$1.05 / шт.
Открыть даташит →ISO7221ADR
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
ADUM3201ARZ Характеристики
| Number of Channels | 2 |
| Скорость передачи данных | 1 Mbps |
| Isolation Voltage | 2500 Vrms |
| Common-Mode Transient Immunity (CMTI) | 25 kV/us (minimum) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Channel Configuration | 1 forward / 1 reverse |
| Диапазон рабочих температур | -40 C to +125 C |
| Корпус | 8-SOIC (0.154 inch / 3.90 mm body width) |
| Technology | iCoupler (CMOS + on-chip transformer) |
| Default Channel Direction | ADuM3201: 1 forward / 1 reverse; ADuM3200: 2 forward |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
| Lead-Free | Yes |
Конфигурация выводов ADUM3201ARZ
| Контакт 1 | VDD1 — Side-1 supply voltage, 2.7V-5.5V |
| Контакт 2 | VIA — Side-1 input, channel A (forward direction) |
| Контакт 3 | VOA — Side-2 output, channel A (forward direction) |
| Контакт 4 | GND1 — Side-1 ground reference |
| Контакт 5 | GND2 — Side-2 ground reference (isolated from GND1) |
| Контакт 6 | VOB — Side-2 output, channel B (reverse direction) |
| Контакт 7 | VIB — Side-1 input, channel B (reverse direction) |
| Контакт 8 | VDD2 — Side-2 supply voltage, 2.7V-5.5V (isolated from VDD1) |
Типичное применение
ADUM3201ARZ подходит для 6 применениеs: Isolated SPI/UART Communication in Industrial PLCs, IGBT/MOSFET Gate-Drive Signal Isolation in Motor Drives, Isolated ADC Front-End in Data Acquisition Systems, Isolated USB/RS-485/RS-232 Transceivers, Medical Equipment Patient Isolation, Isolated Gate Driver for Solar Inverters and SMPS.
Isolated SPI/UART Communication in Industrial PLCs
The ADUM3201ARZ isolates SPI or UART signals between a microcontroller and a remote sensor/transceiver in PLC and industrial-control applications. With 1Mbps data rate per channel and 2.5kVrms isolation, it comfortably handles full-duplex UART (typically 115.2kbaud to 921.6kbaud) or SPI up to 1MHz clock. Its 1F/1R channel configuration is ideal for half-duplex UART (TX/RX) and full-duplex SPI (MOSI/MISO) without requiring two isolator chips. Compared with optocouplers, the ADUM3201ARZ eliminates LED-aging failures and removes the need for current-limit resistors, reducing BOM count. Place 0.1uF decoupling caps on each VDD pin within 2mm, and ensure adequate creepage/clearance (8mm for SOIC-8 wide-body) on the PCB.
Рекомендуется
IGBT/MOSFET Gate-Drive Signal Isolation in Motor Drives
The ADUM3201ARZ isolates gate-drive signals in low-to-medium-power motor inverters and IGBT half-bridge drivers, providing 2.5kVrms isolation between the low-voltage MCU and the high-voltage switching stage. The 25kV/us minimum CMTI rating ensures the isolator does not glitch or lose data during fast switching transients (typical dV/dt on 600V/1200V IGBT bridges is 10-50 kV/us). Each channel's 1Mbps rate supports PWM frequencies up to 500kHz. Unlike optocouplers (1-10 kV/us CMTI), the ADUM3201ARZ withstands harsh motor-drive noise without propagation-delay distortion. Place the ADUM3201ARZ physically near the gate-driver IC, and add bootstrap-supply decoupling per gate-driver datasheet.
Рекомендуется
Isolated ADC Front-End in Data Acquisition Systems
The ADUM3201ARZ isolates the digital SPI/clock signals of an ADC front-end from the host microcontroller in data-acquisition systems, breaking ground loops and protecting the MCU from high-voltage analog inputs. With 2.5kVrms isolation and 25kV/us CMTI, it supports simultaneous-sampling ADC SPI clocks up to 1MHz and isolates DRDY/conversion-start signals. Channel A's reverse direction is ideal for routing the ADC's DRDY (data-ready) signal back to the MCU while channel B forwards the conversion-start pulse. Compared to optocouplers, the ADUM3201ARZ has deterministic propagation delay (~150ns) without CTR degradation over years. The SOIC-8 wide-body package simplifies routing under 8mm creepage requirements for 2.5kVrms systems.
Рекомендуется
Isolated USB/RS-485/RS-232 Transceivers
The ADUM3201ARZ provides signal isolation between a USB-to-UART bridge or RS-485/RS-232 transceiver and the host MCU, isolating the bus from the local controller. The two channels (1 forward, 1 reverse) align naturally with UART TX/RX flows, supporting full-duplex RS-232 (TXD, RXD) and full-duplex RS-485. At 1Mbps it covers standard UART (up to 921.6kbaud) and RS-485 up to 1Mbps. The 2.5kVrms isolation protects the MCU from bus surges and ESD transients, and the 25kV/us CMTI ensures data integrity in electrically noisy industrial environments. Pair the ADUM3201ARZ with the ADM3251EARWZ (RS-232) or ADM1485ARZ (RS-485) for a complete isolated transceiver.
Рекомендуется
Medical Equipment Patient Isolation
The ADUM3201ARZ provides 2.5kVrms patient-isolation barriers in patient-monitoring equipment such as ECG, EEG, blood-pressure monitors, and infusion pumps, where IEC 60601-1 requires reinforced isolation between the patient-connected circuitry and the operator-accessible electronics. The iCoupler technology avoids the LED-aging failure mode of optocouplers, providing >50 years of reliable isolation in continuous-operation medical devices. Each channel's 1Mbps data rate handles digitized ECG sample streams (typically 250-500 samples/sec per lead) plus control/status flags. Use the ADUM3201ARZ in conjunction with isolated power (e.g., ADuM5020/ADuM5028) to complete the patient-isolation solution.
Рекомендуется
Isolated Gate Driver for Solar Inverters and SMPS
The ADUM3201ARZ isolates the gate-drive PWM signals between a digital controller and the high-voltage power stage in solar inverters, UPS systems, and switched-mode power supplies. The 2.5kVrms isolation separates the low-voltage logic-side from the 400V-1500V DC bus side, while the 25kV/us CMTI ensures clean PWM signals despite the fast-switching dV/dt of the IGBT/SiC MOSFET power devices. Each channel's 1Mbps rate supports PWM frequencies up to 500kHz (typical 20-100 kHz for solar/ups), and channel A (forward) can carry the PWM signal while channel B (reverse) carries the fault/feedback. Pair with isolated gate-driver ICs (e.g., ADuM3123, ADuM4135) for complete high-side/low-side driver isolation.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ADUM3201ARZ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ADUM3200ARZ | ADUM3201CRZ | SI8422BB-D-IS | SI8442AB-C-IS | ISO7221ADR |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Silicon Labs | Silicon Labs | Texas Instruments |
| Package | 8-SOIC wide-body (RZ) | 8-SOIC wide-body (RZ) | 8-SOIC wide-body (RZ) | 8-SOIC wide-body | 8-SOIC wide-body | 8-SOIC wide-body (D) |
| Number of Channels | 2 (1F / 1R) | 2 (2F / 0R) | 2 (1F / 1R) | 2 (1F / 1R) | 2 (2F / 0R) | 2 (1F / 1R) |
| Data Rate (max) | 1 Mbps | 1 Mbps | 25 Mbps | 1 Mbps | 1 Mbps | 1 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Supply Voltage Range | 2.7V-5.5V | 2.7V-5.5V | 2.7V-5.5V | 2.7V-5.5V | 2.7V-5.5V | 3.3V/5V |
| Technology | iCoupler (magnetic) | iCoupler (magnetic) | iCoupler (magnetic) | CMOS isolation (capacitive) | CMOS isolation (capacitive) | Capacitive isolation |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
Ключевые отличия
- iCoupler technology eliminates optocoupler LED-aging failures (против Standard 8-pin optocouplers (e.g., Toshiba TLP281, Vishay SFH617A))
- 25 kV/us CMTI significantly exceeds optocoupler ratings (против Standard optocouplers (typically 1-10 kV/us CMTI))
- 1F/1R channel configuration matches half-duplex UART flow (против ADUM3200ARZ (2F/0R))
- Pin-compatible with 8-pin optocouplers for retrofit upgrades (против TI ISO7221ADR (also 8-SOIC wide-body))
Заметки по проектированию
Decouple each VDD1 and VDD2 pin with a 0.1uF low-ESR ceramic capacitor placed within 2mm of the respective pin. According to the ADI datasheet, inadequate decoupling can degrade CMTI performance and introduce data errors during high-dV/dt events. For noisy VDD rails (e.g., downstream of switching regulators), add a 10uF bulk capacitor in parallel with the 0.1uF ceramic. Note that VDD1 and VDD2 are isolated from each other - each side needs its own decoupling capacitor bank; do not share grounds across the barrier.
Maintain minimum 4mm creepage and clearance between side-1 and side-2 PCB traces for 2.5kVrms reinforced isolation. According to UL 1577 and VDE V 0884-2006, the SOIC-8 wide-body (RZ) package provides 8mm internal clearance; PCB copper under the package should not bridge the barrier. Cut the ground plane to create a physical separation of GND1 and GND2 copper pours. Failure to maintain creepage can result in isolation breakdown at levels far below the rated 2.5kVrms.
Route logic signals to/from the ADUM3201ARZ with controlled impedance (typically 50-series termination) if the data line length exceeds 50mm or the signal has rise/fall times under 5ns. According to the ADI datasheet, the device provides ~150ns typical propagation delay but channel-to-channel matching is typically within 5ns - keep matched-impedance traces short to preserve this. Add a small ferrite bead on each VDD pin if the supply carries switching noise from an upstream regulator or DC-DC converter.
Do NOT connect GND1 and GND2 anywhere except through the isolation barrier of the ADUM3201ARZ. Bridging the grounds (e.g., shared ground plane, bypass capacitor across barrier) defeats isolation and can create ground loops. Also, do not exceed the 5.5V absolute maximum on VDD1 or VDD2 - even brief transients above 6V can damage the on-chip transformer drivers. The ADUM3201ARZ does NOT include integrated isolated power - if your application needs isolated power, add an isolated DC-DC converter (e.g., ADuM5020, ADuM5028, or discrete transformer + rectifier).
Информация о соответствии
RoHS compliant and lead-free per ADI product page. UL 1577 recognized, CSA component acceptance notice 5A, VDE V 0884-2006 reinforced isolation. Not AEC-Q qualified - choose ADuM3210/ADuM3211W or ADUM141x for AEC-Q100 automotive applications. The -W suffix variants (ADuM3200W/ADuM3201W) are AEC-Q100 automotive grade.
