INA2227
- High-side or low-side current sensing
- Operates from a 1.7V to 5.5V power supply
- Reports current, voltage, power, and energy
- Programmable full scale range: 20mV / 80mV
- Input common mode range: –0.3V to 48V
- Current monitoring accuracy:
- 16-bit ADC resolution
- 0.5% gain error (maximum)
- 75µV offset (maximum)
- Power monitoring accuracy:
- 1% full scale (maximum)
- Energy monitoring accuracy:
- 1.5% full scale (maximum)
- Low input bias currents: 5nA (maximum)
- Low disable current: 50nA (maximum)
- Configurable averaging options
- Alert limits for over and under current events
- 1.2V compliant I2C, SMBus interface
- 16-pin selectable addresses
- DSBGA-16 Package (1.5mm × 1.5mm)
The INA2227 device is a dual channel 16-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with digital bus voltages from 1.2V to 5V. The device monitors the voltage across an external sense resistor and reports values for shunt voltage, bus voltage, current, power, and energy for each channel.
The INA2227 features programmable ADC conversion times and averaging that is common for all channels. Each channel has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes, power in watts, and energy in joules. Each channel has a dedicated VBUS pin to monitor the bus voltage and can alert on overcurrent and undercurrent conditions, as well as on overvoltage and undervoltage conditions.High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.
The INA2227 senses current on common-mode bus voltages that can vary from –0.3V to 48V, independent of the supply voltage. The device operates from a single 1.7V to 5.5V supply, drawing a typical supply current of 400µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.5µA and can be fully disabled using the enable pin to achieve an supply current less than 50nA. The device is specified over the operating temperature range between –40°C and 125°C and features up to 16 programmable addresses.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | INA2227 48V, Dual Channel, 16-Bit, Current, Voltage, Power, and Energy Monitor With an I2 C Interface datasheet | PDF | HTML | 2025年 6月 19日 |
| Certificate | INA2227EVM EU Declaration of Conformity (DoC) | 2025年 5月 16日 |
設計與開發
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INA2227EVM — INA2227 評估模組
ASC-STUDIO — 類比訊號鏈 (ASC) 套件
該工具的輸出包括 C 標頭檔案和程式碼檔案,這些檔案可以單獨使用,也可以與 TI MCU 的軟體開發套件 (SDK) 範例一起使用。
E3-CONSOLE-APPLICATION-SW — Energy Estimation Engine (E3) driver evaluation software
支援產品和硬體
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數位電源監測器
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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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精密運算放大器 (Vos<1mV)
一般用途運算放大器
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高速運算放大器 (GBW ≥ 50 MHz)
功率運算放大器
視訊放大器
線路驅動器
轉導放大器與雷射驅動器
全差分放大器
精確 ADC
生物感測 AFE
高速 ADC (≥10 MSPS)
差分放大器
儀器放大器
類比電流感測放大器
數位電源監測器
配備整合式分流電阻器的類比電流感測放大器
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晶粒與晶圓服務
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Application-specific data converters|MRI
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
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產品
數位電源監測器
類比電流感測放大器
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前,建立完整的終端設備設計和解決方案原型,進而縮短上市時間並降低開發成本。
在 PSpice for TI 設計與模擬工具中,您可以搜尋 TI (...)
TINA-TI — 基於 SPICE 的類比模擬程式
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YBJ) | 16 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點