ADUM3195ARWZ-RL7 - Isolated Amplifier | Analog Devices
MPN： ADUM3195ARWZ-RL7 ✓ 啟用中ADUM3195ARWZ-RL7 概覽
An isolation amplifier is a type of amplifier that provides electrical isolation between its input and output stages, typically using capacitive or magnetic coupling. This isolation protects sensitive control circuitry from high voltages, ground loops, and noise, while maintaining signal integrity. In the hierarchy of signal conditioning, an isolation amplifier falls under analog front-end components, which are essential in industrial and automotive applications where safety and reliability are paramount.
Key features of the ADuM3195 include a wide input common-mode voltage range, high common-mode transient immunity, and low power consumption. The device operates over a wide temperature range, making it suitable for harsh environments. Its adjustable gain allows designers to optimize the output swing for specific ADC inputs, reducing the need for external scaling components.
Technically, the ADuM3195 uses iCoupler technology, which employs chip-scale transformers to transmit signals across the isolation barrier. This approach offers advantages over optocouplers, such as higher speed, better reliability, and no LED degradation over time. The device also includes an internal reference and output amplifier, simplifying the external circuit design.
Typical applications include isolated voltage sensing in switch-mode power supplies, motor control, and battery monitoring systems. The ADuM3195 is also used in isolated data acquisition systems where ground loop isolation is critical. Its low offset and gain error ensure accurate measurement, which is essential for closed-loop control.
When designing with the ADuM3195, it is important to provide proper power supply decoupling and to follow the recommended layout guidelines to maintain isolation performance. The device requires a separate ground plane for the input and output sides to achieve the specified common-mode transient immunity.
直接替換替代品，適用於 ADUM3195ARWZ-RL7 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
ADUM3195BRQZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM3195WBRQZ-RL7
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM3195WBRQZ
✅ 直接替換📋 參考替代品（不在目錄中）
ADUM4195BRQZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM3195ARQZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADUM3195ARWZ-RL7 最大額定值與電氣特性
| Type | Isolation Amplifier |
| Number of Circuits | 1 |
| 輸出類型 | Single-Ended |
| Gain | Adjustable |
| 封裝 | 16-SOIC-W |
| 安裝類型 | Surface Mount |
| Technology | iCoupler |
| RoHS 狀態 | Compliant |
ADUM3195ARWZ-RL7 腳位配置
| 腳位 1 | VDD1 — Input side supply |
| 腳位 2 | GND1 — Input side ground |
| 腳位 3 | VIN+ — Non-inverting input |
| 腳位 4 | VIN- — Inverting input |
| 腳位 5 | GAIN — Gain setting pin |
| 腳位 6 | REF — Reference voltage |
| 腳位 7 | VOUT — Output voltage |
| 腳位 8 | GND2 — Output side ground |
| 腳位 9 | VDD2 — Output side supply |
| 腳位 10 | NC — No connect |
| 腳位 11 | NC — No connect |
| 腳位 12 | NC — No connect |
| 腳位 13 | NC — No connect |
| 腳位 14 | NC — No connect |
| 腳位 15 | NC — No connect |
| 腳位 16 | NC — No connect |
典型應用
ADUM3195ARWZ-RL7 適用於 6 應用s: Isolated Voltage Sensing in Power Supplies, Motor Drive Feedback, Battery Monitoring Systems, Isolated Data Acquisition, Industrial Process Control, Renewable Energy Systems.
Isolated Voltage Sensing in Power Supplies
The ADUM3195ARWZ-RL7 is used to sense output voltage in isolated power supplies, providing feedback to the primary-side controller. Its low offset and gain error ensure accurate regulation. The adjustable gain allows scaling the sensed voltage to match the ADC input range. The iCoupler technology provides reliable isolation, eliminating the need for optocouplers and improving transient response.
推薦
Motor Drive Feedback
In motor drives, the ADUM3195ARWZ-RL7 isolates the DC bus voltage sensing from the control circuitry. This prevents high-voltage transients from damaging the controller. The device's high common-mode transient immunity ensures stable operation in noisy environments. Its small package and low power consumption make it suitable for compact drive designs.
推薦
Battery Monitoring Systems
The ADUM3195ARWZ-RL7 is used to monitor individual cell voltages in battery packs, providing isolated measurements to the battery management system. Its low offset voltage ensures accurate voltage readings, which is critical for balancing and safety. The adjustable gain allows optimization for different cell voltage ranges. The isolation protects the monitoring circuitry from high stack voltages.
推薦
Isolated Data Acquisition
In data acquisition systems, the ADUM3195ARWZ-RL7 provides galvanic isolation between sensors and the ADC, preventing ground loops and reducing noise. Its single-ended output simplifies interfacing with ADCs. The device's low gain error ensures measurement accuracy. It is ideal for industrial monitoring systems where sensors are located in harsh environments.
推薦
Industrial Process Control
The ADUM3195ARWZ-RL7 is used in process control systems to isolate analog signals from field transmitters. This protects the control system from voltage spikes and noise. The adjustable gain allows matching the signal range to the PLC input. Its wide operating temperature range makes it suitable for industrial environments.
推薦
Renewable Energy Systems
In solar inverters and wind turbines, the ADUM3195ARWZ-RL7 isolates voltage sensing from the high-voltage DC bus. This ensures safe and accurate monitoring for maximum power point tracking. The device's high isolation voltage and transient immunity are essential for reliability. Its low power consumption is beneficial for energy-efficient designs.
推薦
推薦產品摘要
工程參考資料，適用於 ADUM3195ARWZ-RL7 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADUM3195BRQZ | ADUM3195WBRQZ-RL7 | ADUM3195WBRQZ |
|---|---|---|---|---|
| Package | 16-SOIC-W | 16-QSOP | 16-QSOP | 16-QSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Gain | Adjustable | Adjustable | Adjustable | Adjustable |
| Output Type | Single-Ended | Single-Ended | Single-Ended | Single-Ended |
| Automotive Grade | No | No | Yes | Yes |
主要差異化特點
- iCoupler technology vs optocoupler (對比Optocoupler-based isolation amplifiers)
- Low offset and gain error (對比ADUM3195BRQZ)
- Adjustable gain (對比Fixed-gain isolation amplifiers)
設計說明
For optimal isolation performance, maintain a clean separation between the input and output ground planes. Use a slot or cutout under the device to increase creepage distance. Place decoupling capacitors close to the VDD1 and VDD2 pins, typically 0.1uF and 10uF. Follow the layout guidelines in the datasheet to achieve the specified common-mode transient immunity.
Ensure that the supply voltages for the input and output sides are within the recommended operating range. Use low-ESR capacitors for decoupling to minimize noise. The device's power consumption is low, but proper bypassing is essential for stable operation. Refer to the datasheet for the recommended supply voltage and current requirements.
Do not exceed the absolute maximum ratings for supply voltage or input voltage. The gain setting pin must be connected correctly to achieve the desired gain. Avoid floating unused pins; connect them to ground or leave as per datasheet. Ensure that the isolation barrier is not compromised by PCB traces or vias that cross the isolation boundary.
合規資訊
RoHS compliant per Analog Devices. Not AEC-Q100 qualified; automotive grade available as ADUM3195WBRQZ-RL7.
