ADUM3195ARWZ - Isolated Amplifier with Adjustable Gain | Analog Devices
料号： ADUM3195ARWZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.24 | $3.24 |
| 10 | $2.92 | $29.20 |
| 100 | $2.59 | $259.00 |
| 500 | $2.33 | $1,165.00 |
| 1,000 | $2.1 | $2,100.00 |
ADUM3195ARWZ 概述
An isolated amplifier is a type of amplifier that provides electrical isolation between its input and output stages, preventing dangerous voltages or ground loops from affecting the signal path. It is a critical component in applications where safety and noise immunity are paramount, such as in medical devices, industrial motor drives, and power conversion systems. The isolation barrier is typically implemented using capacitive or magnetic coupling, allowing signal transfer without a direct electrical connection. This enables the amplifier to measure voltages or currents across a high-voltage boundary while maintaining signal integrity and protecting low-voltage control circuitry.
Key features of the ADUM3195ARWZ include adjustable gain, which allows designers to set the amplification factor according to their specific sensing requirements. The single-ended output simplifies interfacing with ADCs and microcontrollers. The device also offers excellent common-mode transient immunity, ensuring reliable operation in noisy industrial environments. The 210 kHz bandwidth supports fast transient response, essential for stable feedback loops in switching power supplies. The wide supply range of 4.5 V to 5.5 V on both sides provides flexibility in system design.
Technically, the ADUM3195ARWZ uses Analog Devices' iCoupler technology, which integrates isolation and amplification in a single chip. This technology uses chip-scale transformers to transmit signals across the isolation barrier, offering superior performance compared to optocouplers, including higher speed, lower power consumption, and better reliability. The adjustable gain is implemented via an external resistor network, allowing precise control over the amplification factor. The device also features a reference output, which can be used to set the common-mode voltage of the output signal.
Typical applications include isolated voltage sensing in AC-DC and DC-DC converters, current sensing in motor drives, and isolated signal conditioning in industrial process control. The ADUM3195ARWZ is also used in battery management systems and solar inverters, where isolation is required for safety and noise reduction. Its high bandwidth and adjustable gain make it ideal for closed-loop control systems that require accurate and fast feedback.
When designing with the ADUM3195ARWZ, it is important to ensure proper decoupling on both supply pins and to place the external gain-setting resistors close to the device to minimize parasitic capacitance. The layout should also maintain adequate creepage and clearance distances on the PCB to meet isolation safety standards.
直接替换替代料： ADUM3195ARWZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
ADUM3195WBRQZ
✅ 直接替换📋 参考替代料（不在目录中）
ADUM3195BRQZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM3195ARQZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM3195WARQZ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADUM3195WBRQZ-RL7
✅ 直接替换📋 参考替代料（不在目录中）
ADUM3195ARWZ 最大额定值与电气特性
| Isolation Voltage | 3000 V rms |
| Bandwidth | 210 kHz |
| Supply Voltage VDD1 | 4.5 V to 5.5 V |
| Supply Voltage VDD2 | 4.5 V to 5.5 V |
| Gain | Adjustable (external resistors) |
| 输出类型 | Single-ended |
| Number of Channels | 1 |
| 封装 | 16-lead SOIC (RW-16) |
| 工作温度范围 | -40°C to +125°C |
| RoHS 状态 | Compliant |
ADUM3195ARWZ 引脚配置
| 引脚 1 | VDD1 — Input side supply voltage (4.5V to 5.5V) |
| 引脚 2 | GND1 — Input side ground |
| 引脚 3 | VIN+ — Non-inverting input |
| 引脚 4 | VIN- — Inverting input |
| 引脚 5 | GAIN — Gain setting pin (external resistor) |
| 引脚 6 | REF — Reference output |
| 引脚 7 | NC — No connect |
| 引脚 8 | NC — No connect |
| 引脚 9 | NC — No connect |
| 引脚 10 | NC — No connect |
| 引脚 11 | NC — No connect |
| 引脚 12 | NC — No connect |
| 引脚 13 | VOUT — Single-ended output |
| 引脚 14 | GND2 — Output side ground |
| 引脚 15 | VDD2 — Output side supply voltage (4.5V to 5.5V) |
| 引脚 16 | NC — No connect |
典型应用
ADUM3195ARWZ 适用于 6 应用s: Isolated Voltage Sensing in Power Supplies, Current Sensing in Motor Drives, Isolated Signal Conditioning in Industrial Automation, Battery Management Systems, Solar Inverters, Medical Device Isolation.
Isolated Voltage Sensing in Power Supplies
The ADUM3195ARWZ is ideal for isolated voltage sensing in AC-DC and DC-DC converters. Its 3000 V rms isolation ensures safe measurement of high-voltage rails, while the 210 kHz bandwidth enables fast feedback for stable regulation. The adjustable gain allows precise scaling of the sensed voltage to match ADC input ranges, and the single-ended output simplifies interface with microcontrollers. In a typical flyback converter, the amplifier senses the output voltage across the isolation barrier and feeds the error signal to the PWM controller, ensuring accurate regulation without compromising safety.
推荐
Current Sensing in Motor Drives
In motor drives, the ADUM3195ARWZ is used for isolated current sensing in the inverter stage. Its high bandwidth of 210 kHz captures fast current transients, enabling precise torque control. The adjustable gain allows optimization for different current ranges, and the single-ended output directly interfaces with the motor control ADC. The isolation barrier protects the low-voltage control circuitry from the high-voltage motor supply, enhancing system safety. The device's common-mode transient immunity ensures reliable operation in the noisy switching environment of a motor drive.
推荐
Isolated Signal Conditioning in Industrial Automation
The ADUM3195ARWZ provides isolated signal conditioning for industrial sensors and transmitters. Its 3000 V rms isolation protects control systems from ground loops and high-voltage transients. The adjustable gain allows scaling of sensor outputs to match PLC or ADC inputs, and the single-ended output simplifies wiring. The wide operating temperature range of -40°C to +125°C makes it suitable for harsh industrial environments. The device's high bandwidth ensures accurate reproduction of fast-changing signals, such as those from pressure or flow sensors.
推荐
Battery Management Systems
In battery management systems (BMS), the ADUM3195ARWZ is used for isolated voltage and current monitoring of individual cells. Its 3000 V rms isolation ensures safe measurement of high-voltage battery stacks, while the adjustable gain allows precise scaling of cell voltages. The single-ended output interfaces directly with the BMS microcontroller, and the 210 kHz bandwidth supports fast sampling for accurate state-of-charge estimation. The device's low power consumption is beneficial for battery-powered systems, and its wide temperature range suits automotive and industrial BMS applications.
推荐
Solar Inverters
The ADUM3195ARWZ is used in solar inverters for isolated voltage and current sensing in the DC-DC and DC-AC stages. Its high isolation voltage ensures safety in high-voltage photovoltaic systems, and the 210 kHz bandwidth enables fast MPPT (Maximum Power Point Tracking) control. The adjustable gain allows optimization for different panel voltages, and the single-ended output simplifies interface with the inverter's DSP. The device's robust isolation and wide temperature range make it suitable for outdoor installations.
推荐
Medical Device Isolation
In medical devices, the ADUM3195ARWZ provides isolated signal conditioning for patient monitoring and diagnostic equipment. Its 3000 V rms isolation ensures patient safety by preventing dangerous leakage currents. The adjustable gain allows precise scaling of physiological signals, and the single-ended output interfaces with medical-grade ADCs. The device's high bandwidth supports accurate reproduction of ECG, EEG, and other biosignals. Its low power consumption is ideal for battery-operated devices, and its reliability meets the stringent requirements of medical applications.
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推荐产品汇总
工程参考数据： ADUM3195ARWZ ——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 | ADUM3195WBRQZ | ADUM3195BRQZ | ADUM3195ARQZ |
|---|---|---|---|---|
| Package | 16-lead SOIC (RW-16) | 16-QSOP | 16-QSOP | 16-QSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Isolation Voltage | 3000 V rms | 3000 V rms | 3000 V rms | 3000 V rms |
| Bandwidth | 210 kHz | 210 kHz | 210 kHz | 210 kHz |
| Supply Voltage VDD1 | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V |
| Supply Voltage VDD2 | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V |
| Gain | Adjustable | Adjustable | Adjustable | Adjustable |
| Output Type | Single-ended | Single-ended | Single-ended | Single-ended |
关键差异点
- Adjustable gain with single-ended output （对比 ADUM3195WBRQZ)
- Commercial grade cost-effective （对比 ADUM3195WBRQZ)
- Wide operating temperature range （对比 ADUM3195BRQZ)
设计说明
Ensure both VDD1 and VDD2 are within 4.5V to 5.5V. Use 0.1uF decoupling capacitors close to each supply pin to filter high-frequency noise. For optimal performance, place a 10uF bulk capacitor on each supply rail if the source is far from the device.
Maintain proper creepage and clearance distances on the PCB to meet isolation safety standards. The isolation barrier must be kept clean of copper traces to avoid reducing the isolation voltage. Use a slot or cutout under the device if necessary to increase creepage distance.
Place the gain-setting resistors close to the GAIN pin to minimize parasitic capacitance and inductance. Keep the input traces short and shielded to reduce noise pickup. For high-frequency operation, use a ground plane on both sides of the isolation barrier.
合规信息
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; use ADUM3195WBRQZ for automotive.
