RES31A
- Wide temperature range: –40°C to +125°C
- Ratio = RIN : RG, RIN = 100kΩ (nominal)
- Highly precise ratio tolerance: ±0.05% (maximum)
- Low drift over temperature range:
- +2/–5ppm/°C max TCRratio for RES31A00 (±2ppm/°C max TCRratio from –40°C to +105°C)
- ±2ppm/°C max TCRratio for other ratios
The RES31A is a matched pair of resistive dividers, implemented in thin-film SiCr with Texas Instruments’ modern, high-performance, analog CMOS process. The device has a nominal input resistance of 100kΩ, supporting higher divider voltages than the RES11A but with a lower current draw than the RES21A, and is available in several nominal ratios to meet a wide array of system needs. Use the RES31A in an inverse gain configuration by simply rotating the device placement by 180°. This feature supports layout reuse and increases flexibility for applications such as discrete instrumentation or difference amplifier implementations.
The RES31A series features high ratio-matching precision, with the measured ratio of each divider within 0.05% (±500ppm) (typical) of the nominal. This precision is maintained over the temperature range.
The RES31A is specified with a temperature range from –40°C to +125°C. The device is offered in an 8‑pin, SOT‑23-THIN package, with a body size of 2.9mm × 1.6mm (body size is a nominal value and does not include pins).
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 | RES31A Matched, Thin-Film Resistor Dividers With 100kΩ Inputs datasheet | PDF | HTML | 2025/12/12 |
設計與開發
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TIDA-010962 — 自動測試設備 (ATE) 80V 離散式浮動 VI 參考設計
此參考設計展現四象限離散式浮動電壓與電流 (VI) 設計。電壓輸出支援 ±40V 和 0V 至 80V 範圍，並提供 500mA、10mA 和 10μA 三種電流範圍。此設計可在強制電壓 (FV)、強制電流 (FI)、緩衝器及具有類比回饋迴路的 Gang 模式下運作。憑藉 20 位元強制數位轉類比轉換器 (DAC) 和 18 位元、2 通道類比轉數位轉換器 (ADC) 以及精密訊號鏈，該參考設計可實現校準後控制與測量具備 0.01% 準確度。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23-THN (DDF) | 8 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。