INA823
- Input overvoltage protection up to ±60 V
- Input voltage extends 150 mV below negative supply
- Low power supply current: 180 µA (typ)
- Precision performance:
- Low offset voltage: 20 µV (typ), 100 µV (max)
- Low input bias current: 8nA (max)
- Common-mode rejection:
- 84 dB, G = 1 (min)
- 104 dB, G = 10 (min)
- 120 dB, G ≥ 100 (min)
- Power supply rejection: 100 dB, G = 1 (min)
- Input voltage noise: 21 nV/√Hz
- Bandwidth: 1.9 MHz (G = 1), 60 kHz (G = 100)
- Stable with 1-nF capacitive loads
- Supply range:
- Single-supply: 2.7 V to 36 V
- Dual-supply: ±1.35 V to ±18 V
- Specified temperature range: –40°C to +125°C
- Packages: 8-pin SOIC and 8-pin VSSOP
The INA823 is an integrated instrumentation amplifier that offers low power consumption and operates over a wide, single-supply or dual-supply range. A single external resistor sets any gain from 1 to 10,000. The device provides low input offset voltage, low offset voltage drift, low input bias current, and low current noise while remaining cost-effective. Additional circuitry protects the inputs against overvoltage up to ±60 V.
The INA823 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range. The INA823 has a wide common-mode voltage range as low as 150-mV below negative supply. The device is designed for low-voltage operation from a 2.7-V single supply, and dual supplies up to ±18 V. The low power and single supply operation enable hand-held, battery-operated systems.
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 | INA823 Precision, Low-Power, Wide-Supply (2.7-V to 36-V) Instrumentation Amplifier datasheet (Rev. B) | PDF | HTML | 2021/11/23 | ||
| 應用說明 | High Accuracy Wheatstone Bridge Amplifier Circuit to 4-20-mA Current Loop Transm | PDF | HTML | 2023/9/28 | |||
| Application brief | How to Select Amplifiers for Pressure Transmitter Applications (Rev. B) | PDF | HTML | 2023/2/14 | |||
| Product overview | Bridge Sensor Solution (Rev. A) | PDF | HTML | 2023/1/27 | |||
| Product overview | PLC Analog Input Front-End Architectures | PDF | HTML | 2022/7/31 | |||
| 應用說明 | Cost-Optimized, High-Performance Front-End Design for Analog Input Modules | PDF | HTML | 2022/6/22 | |||
| 應用說明 | Amplifier Input Common-Mode and Output-Swing Limitations | PDF | HTML | 2022/1/14 | |||
| 應用說明 | Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps | PDF | HTML | 2021/7/27 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
INAEVM — 通用儀器放大器評估模組
The universal INAEVM (Instrumentation Amplifier Evaluation Module) is available in two package options that simplify prototyping precision instrumentation amplifiers in either the SO-8 (D) package or the MSOP-8(DGK) package with the pinout shown. See the chart in the user guide (...)
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。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |