ADUM1201ARZ - Dual 2500Vrms 1Mbps Isolator | Analog Devices
料号： ADUM1201ARZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.48 | $2.48 |
| 10 | $2.15 | $21.50 |
| 100 | $1.72 | $172.00 |
| 500 | $1.48 | $740.00 |
| 1,000 | $1.29 | $1,290.00 |
| 3,000 | $1.22 | $3,660.00 |
ADUM1201ARZ 概述
A digital isolator is a component that provides electrical isolation between two circuits while allowing digital signals to pass across the isolation barrier. Unlike optocouplers, which use LEDs and photodiodes, iCoupler devices use monolithic transformers and high-speed CMOS to achieve isolation. This approach eliminates the uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects associated with optocouplers. Digital isolators are essential in applications where ground potential differences, noise, or safety requirements demand galvanic isolation, such as in industrial automation, medical equipment, and communication systems.
Key features of the ADUM1201ARZ include its dual-channel configuration with 1/1 channel directionality, meaning one channel transmits data in each direction. The device supports data rates up to 1Mbps, making it suitable for low-to-moderate speed communication interfaces like SPI, UART, and GPIO isolation. The 25kV/µs CMTI ensures reliable operation in noisy environments, preventing false triggering due to fast transients. The iCoupler technology also consumes significantly less power than optocouplers, with typical quiescent current in the microampere range.
The ADUM1201ARZ features a patented refresh mechanism that ensures DC correctness in the absence of input logic transitions and during power-up/power-down conditions. This is critical for maintaining the integrity of static signals across the isolation barrier. The device is available in both standard and automotive-grade versions, with the ADUM1201W variants qualified for 125°C operation. The 8-pin SOIC package is widely used and easy to integrate into existing PCB designs.
Typical applications include isolating SPI and UART interfaces in industrial control systems, providing isolation in medical monitoring equipment, and protecting sensitive electronics in communication infrastructure. The device is also used in power supply control and motor drive circuits where high-voltage transients are present. Its small footprint and low power consumption make it ideal for portable and battery-powered devices.
When designing with the ADUM1201ARZ, it is important to ensure proper power supply decoupling on both sides of the isolation barrier. Place 0.1µF capacitors close to the VDD1 and VDD2 pins to minimize noise. Additionally, consider the maximum data rate and CMTI requirements of your application to ensure the device meets your performance needs.
直接替换替代料： ADUM1201ARZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADUM1201ARZ （相同外形与封装尺寸） ——差异在于 Package, RoHS Status, Channel Directionality, Common-Mode Transient Immunity (CMTI), Isolation Voltage.
快速对比工具——选择替代料号进行并排对比：
ADUM1201BRZ
✅ 直接替换✓ 有现货
$1.82 / 个
查看数据手册 →ADUM1201WURZ
✅ 直接替换📋 参考替代料（不在目录中）
ADUM1200ARZ-RL7
⚡ 相同封装📋 参考替代料（不在目录中）
CA-IS3721AF
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
IL711-1E
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM1201ARZ 规格参数
| Technology | iCoupler (monolithic transformer + high-speed CMOS) |
| Number of Channels | 2 |
| Channel Directionality | 1/1 (one forward, one reverse) |
| Isolation Voltage | 2500 Vrms (1 minute) |
| Maximum Data Rate | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs (minimum) |
| VDD1 Supply Range | 3.0 V to 5.5 V |
| VDD2 Supply Range | 3.0 V to 5.5 V |
| Propagation Delay | 90 ns (typ) / 180 ns (max) |
| Pulse Width Distortion | 25 ns (max) |
| DC Correctness | Yes (patented refresh mechanism) |
| 工作温度范围 | -40°C to +105°C |
| 封装 | 8-SOIC (0.154", 3.90mm Width) |
| 安装类型 | Surface Mount |
| 引脚数 | 8 |
| RoHS 状态 | Compliant (Z suffix) |
| AEC-Q100 Qualification | Not qualified (standard); ADUM1201WURZ is automotive-grade |
ADUM1201ARZ 引脚配置
| 引脚 1 | VDD1 — Supply voltage, side 1 (3.0V to 5.5V) |
| 引脚 2 | GND1 — Ground, side 1 |
| 引脚 3 | VIA — Input, channel 1 (side 1 forward input) |
| 引脚 4 | VOB — Output, channel 2 (side 1 reverse-channel output) |
| 引脚 5 | VIB — Input, channel 2 (side 2 reverse-channel input) |
| 引脚 6 | VOA — Output, channel 1 (side 2 forward-channel output) |
| 引脚 7 | GND2 — Ground, side 2 |
| 引脚 8 | VDD2 — Supply voltage, side 2 (3.0V to 5.5V) |
典型应用
ADUM1201ARZ 适用于 6 应用s: Industrial Automation and Fieldbus Isolation, Isolated SPI Data Acquisition, Gate-Driver Signal Isolation in Motor Drives, Medical Patient Monitoring Isolation, Telecommunication and Networking Port Protection, Battery Management System Communication.
Industrial Automation and Fieldbus Isolation
The ADUM1201ARZ provides robust 2500 Vrms galvanic isolation for UART and RS-485 fieldbus links in PLCs and industrial controllers. Its 1 Mbps data rate comfortably carries common 115200 baud or 1 Mbps industrial serial links, while 25 kV/µs CMTI rejects noise from nearby motor drives and contactors. When placed between a 3.3V MCU UART and an isolated RS-485 transceiver, it prevents ground loops and protects logic circuits from transient surges. The iCoupler architecture eliminates optocoupler CTR drift, giving stable operation over the -40°C to +105°C industrial temperature range. Pair it with an isolated transceiver and a multi-channel isolator for complete field-side protection.
推荐
Isolated SPI Data Acquisition
In precision data acquisition systems, the ADUM1201ARZ isolates the SPI bus between a host microcontroller and isolated ADCs with moderate clock rates. It handles the chip-select and clock or data lines at rates up to 1 Mbps, which is sufficient for 16-bit ADCs sampling at lower throughput. The 2500 Vrms isolation breaks ground loops that would otherwise corrupt measurements, while the 25 kV/µs CMTI preserves signal integrity in electrically noisy industrial environments. The 3.0V to 5.5V supply range lets it interface directly with 3.3V ADCs and 5V host logic. For faster sigma-delta converters, upgrade to the 10 Mbps ADUM1201BRZ without changing the PCB footprint.
推荐
Gate-Driver Signal Isolation in Motor Drives
The ADUM1201ARZ is used to isolate low-voltage logic signals from high-voltage power-stage domains in motor drives and inverters. Its 2500 Vrms rating provides a reinforced safety barrier between the control MCU and the gate-driver circuitry, while 25 kV/µs CMTI ensures that fast switching transients from the power stage do not cause false logic transitions. The 1 Mbps data rate is adequate for PWM control and status feedback in VFD and servo applications. By isolating the diagnostic and control paths, the ADUM1201ARZ helps protect sensitive electronics and allows designers to achieve clean, noise-free communication between the controller and power module.
推荐
Medical Patient Monitoring Isolation
The ADUM1201ARZ is well suited to medical monitoring equipment where galvanic isolation protects patients and electronics from leakage currents. Its 2500 Vrms isolation barrier separates the patient-connected analog front end from the digital processing side, preventing hazardous ground loops. The 1 Mbps data rate handles physiological signal telemetry, ECG/EEG data streams, and control signals in patient monitors. The iCoupler technology avoids the LED aging and CTR degradation found in optocouplers, ensuring stable signal integrity over the life of the device. Its compact SOIC-8 package helps designers meet tight PCB area constraints in portable monitors and wearable medical patches.
推荐
Telecommunication and Networking Port Protection
In telecom infrastructure, the ADUM1201ARZ protects controller logic from noise and ground shifts on external communication ports. It isolates UART, alarm, and status lines at 1 Mbps while providing 2500 Vrms of surge isolation between field wiring and backplane electronics. The high CMTI of 25 kV/µs prevents lightning-induced or switching-induced transients from corrupting signal states. The wide supply range allows direct interface with both 3.3V and 5V logic families, simplifying mixed-voltage board design. Its low power consumption and small 8-SOIC package make it attractive for dense line cards, base stations, and network switches where board space is at a premium.
推荐
Battery Management System Communication
The ADUM1201ARZ provides isolated communication between battery-monitoring ICs and the system controller in battery management systems (BMS). Its 2500 Vrms isolation prevents high-voltage battery pack transients from reaching the low-voltage MCU, while 25 kV/µs CMTI maintains data integrity during battery contactor switching. The 1 Mbps data rate is sufficient for cell-voltage, temperature, and status data transmission between stacks and the central controller. Operating from 3.0V to 5.5V supplies, it interfaces directly with both monitor ICs and microcontrollers. The low-power iCoupler architecture minimizes additional battery drain in always-connected monitoring circuits.
推荐
推荐产品汇总
工程参考数据： ADUM1201ARZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADUM1201BRZ | ADUM1201WURZ | ADUM1200ARZ-RL7 | CA-IS3721AF | IL711-1E |
|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Chipanalog | NVE |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms (typ) | 2500 Vrms (typ) |
关键差异点
- Bidirectional 1/1 isolation in a single package （对比 ADUM1200ARZ-RL7)
- Low-cost 1 Mbps grade for moderate-speed interfaces （对比 ADUM1201BRZ)
- iCoupler power and lifetime advantage over optocouplers （对比 optocoupler isolation (e.g., PC817))
- Broad drop-in family including automotive option （对比 CA-IS3721AF)
设计说明
Place a 0.1 µF bypass capacitor as close as possible to each VDD pin (VDD1 and VDD2) and use 1 µF to 10 µF bulk capacitance on each supply as needed. Poor decoupling can cause oscillation or false triggering across the isolation barrier, especially during fast signal edges.
Maintain a clear isolation barrier under the SOIC-8 package. Avoid routing copper traces across the isolation gap; this can reduce the effective isolation voltage. Keep GND1 and GND2 planes separated and never connect them except through the intended system common.
Do not exceed 1 Mbps for the ARZ grade, and do not leave unused inputs floating—tie unused logic inputs to VDD or GND. When isolating high-speed transients, observe CMTI limits; the 25 kV/µs rating assumes a controlled slew rate at the input logic edge.
合规信息
Standard ADUM1201ARZ is RoHS compliant (Z suffix). The ADUM1201WURZ variant is automotive-grade and AEC-Q100 qualified. REACH, halogen-free, and conflict minerals not confirmed in the provided data.
