INA310B
- Wide common-mode voltage:
- Operational voltage: −4 V to +110 V
- Survival voltage: −20 V to +120 V
- High signal bandwidth: 1.3 MHz
- Slew rate: 2.5 V/µs
- Excellent CMRR: 160 dB
- Accuracy
- Gain error (maximum)
- Version A: 0.15%, 10 ppm/°C drift
- Version B: 0.5%, 20 ppm/°C drift
- Offset voltage (maximum)
- Version A: ±20 µV, ±0.25 µV/°C drift
- Version B: ±150 µV, ±1 µV/°C drift
- Gain error (maximum)
- On-board open-drain comparator
- Internal comparator voltage reference: 0.6 V
- Propagation delay time: 1 µs
- Latching capability on comparator
- Available gains:
- INA310A1, INA310B1 : 20 V/V
- INA310A2, INA310B2 : 50 V/V
- INA310A3, INA310B3 : 100 V/V
- INA310A4, INA310B4 : 200 V/V
- INA310A5, INA310B5 : 500 V/V
- Package options: VSSOP-8
The INA310x is an ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V, independent of supply voltage with an integrated comparator. The high precision current measurement accuracy is achieved through a combination of low offset voltage (20 µV, maximum), small gain error (0.15%, maximum) and a high DC CMRR (160 dB, typical). The INA310x has a high signal bandwidth of 1.3 MHz designed for high voltage DC current measurements and high-speed applications like fast overcurrent protection.
The INA310x incorporates an open-drain comparator and internal reference that provides a 0.6 V threshold. An external resistive divider sets the current trip point. The comparator includes a latching capability that can be made transparent by grounding (or leaving open) the RESET pin.
The INA310x operates from a single 2.7 V to 20 V supply and draws 1.6 mA of supply current. The INA310x is available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address a wide dynamic range of current-sensing applications.
The INA310x is specified over an operating temperature range of −40°C to +125°C and is offered in a space-saving 8-pin VSSOP package.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | INA310x –4 V to 110 V, 1.3 MHz, Ultra-Precise Current Sense Amplifier With Open-Drain Comparator and Reference datasheet | PDF | HTML | 2023/3/21 | ||
| 應用說明 | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | 2024/11/18 | |||
| 證書 | INA310BEVM EU Declaration of Conformity (DoC) | 2023/5/3 |
設計與開發
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DIP-ADAPTER-EVM — DIP 轉接器評估模組
Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.
The (...)
INA310EVM — 適用於 -4-V 至 110-V、1.3-MHz 類比電流感測放大器的 INA310 評估模組
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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。
除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |