TPL1401
-
256-position digital potentiometer for voltage-divider applications
- 1 LSB INL and DNL
- Wide operating range
- Power supply: 1.8 V to 5.5 V
- Temperature range: –40°C to +125°C
- Buffered wiper for improved load regulation
- FB pin for precision current sink applications
- Wiper lock function to protect from accidental writes to the digital potentiometer
- I2C interface
- Standard, fast, and fast plus modes
- 1.62-V VIH with VDD = 5.5 V
- User-programmable nonvolatile memory (NVM/EEPROM)
- Save and recall all register settings
- Internal reference
- Very low power: 0.2 mA at 1.8 V
- Flexible startup: High impedance or 10K-GND
- Tiny package: 8-pin WSON (2 mm × 2 mm)
The TPL1401 is a digital potentiometer (digipot) with a buffered wiper. Unlike standard digipots, this device offers higher load regulation in voltage-divider applications as a result of the integrated buffered wiper.
The TPL1401 makes in-factory calibration and trimming easier with integrated nonvolatile memory (NVM), and a simple I2C digital interface to communicate with the device. This device supports I2C standard mode (100 kbps), fast mode (400 kbps), and fast mode plus (1 Mbps).
The TPL1401 operates with either the internal reference or with the power supply as the reference, and provides a full-scale output of 1.8 V to 5.5 V. This device also includes a wiper lock feature, a feedback (FB) pin for current-sink applications, and two bytes of user-programmable NVM space. The TPL1401 has a power-on-reset (POR) circuit that makes sure all the registers start with default or user-programmed settings using NVM. The digipot output powers on in high-impedance mode (default); this setting can be programmed to 10kΩ-GND using NVM.
The TPL1401 is tiny, feature rich, and an easy-to-use building block device that can be integrated into many applications.
The TPL1401 operates within the temperature range of –40°C to +125°C.
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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 | TPL1401 256-Tap, High-Accuracy, Digital Potentiometer With Buffered Wiper datasheet | PDF | HTML | 2020/9/16 | ||
| Circuit design | Microphone Sensitivity Adjustments Using TPL1401 | PDF | HTML | 2021/4/27 | |||
| Circuit design | Programmable comparator circuit with buffered digital potentiometer | PDF | HTML | 2021/4/19 | |||
| 更多文件說明 | New TI smart analog and smart DAC adds intelligence to analog without soft | 2020/12/15 |
設計與開發
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TPL1401EVM — 配備緩衝刷評估模組的 TPL1401 256 分接高準確數位電位計 (digipot)
TPL1401 評估模組 (EVM) 是一個易於使用的平台，用於評估 TPL1401 產品的功能與性能。TPL1401 為緩衝電壓輸出數位電位計 (DPOT)。此產品具有非揮發性記憶體 (NVM)、內部參考和 I2C 介面。
TPL1401 以內部參考或電源供應做為參考運作，並提供 1.8 V 至 5.5 V 的全刻度輸出。裝置透過 I2C 介面進行通訊。支援 I2C 標準模式 (100 kbps)、快速模式 (400 kbps) 和快速模式 + (FM+) (1 Mbps)。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WSON (DSG) | 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。