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INA3221-Q1

現行

具有警報功能的 AEC-Q100、26V、三通道、13 位元、i2c 輸出電流/電壓監控器

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產品規格表

INA3221-Q1

現行
產品規格表 立即訂購

產品詳細資料

Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 13 Input offset (±) (max) (µV) 80 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.1 Voltage gain (V/V) 1 CMRR (min) (dB) 110 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.35 Gain error (%) 0.25 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Low-side Capable Number of channels 3 Power measurement accuracy (%) 0.5 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 13 Input offset (±) (max) (µV) 80 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.1 Voltage gain (V/V) 1 CMRR (min) (dB) 110 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.35 Gain error (%) 0.25 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Low-side Capable Number of channels 3 Power measurement accuracy (%) 0.5 TI functional safety category Functional Safety-Capable Rating Automotive Operating temperature range (°C) -40 to 125
VQFN (RGV) 16 16 mm² 4 x 4
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40 °C to 125 °C
  • Functional Safety-Capable
  • Senses bus voltages from 0 V to 26 V
  • Reports shunt and bus voltage
  • High accuracy:
    • Offset voltage: ±80 µV (maximum)
    • Gain error: 0.25% (maximum)
  • Configurable averaging options
  • Four programmable addresses
  • Programmable alert and warning outputs
  • Power-supply operation: 2.7 V to 5.5 V
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40 °C to 125 °C
  • Functional Safety-Capable
  • Senses bus voltages from 0 V to 26 V
  • Reports shunt and bus voltage
  • High accuracy:
    • Offset voltage: ±80 µV (maximum)
    • Gain error: 0.25% (maximum)
  • Configurable averaging options
  • Four programmable addresses
  • Programmable alert and warning outputs
  • Power-supply operation: 2.7 V to 5.5 V

The INA3221-Q1 is a three-channel, high-side current and bus voltage monitor with an I2C- and SMBUS-compatible interface. The INA3221-Q1 monitors both shunt voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221-Q1 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.

The INA3221-Q1 senses current on buses that can vary from 0 V to 26 V. The device is powered from a single 2.7-V to 5.5-V supply, and draws 350 µA (typ) of supply current. The INA3221-Q1 is specified over the operating temperature range of –40 °C to +125 °C. The I2C- and SMBUS-compatible interface features four programmable addresses.

The INA3221-Q1 is a three-channel, high-side current and bus voltage monitor with an I2C- and SMBUS-compatible interface. The INA3221-Q1 monitors both shunt voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221-Q1 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.

The INA3221-Q1 senses current on buses that can vary from 0 V to 26 V. The device is powered from a single 2.7-V to 5.5-V supply, and draws 350 µA (typ) of supply current. The INA3221-Q1 is specified over the operating temperature range of –40 °C to +125 °C. The I2C- and SMBUS-compatible interface features four programmable addresses.
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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet INA3221-Q1AEC-Q100, 26-V, Triple Channel, 13-Bit, I2C Output Current and Voltage Monitor With Alerts datasheet (Rev. C) PDF | HTML 2021年 3月 23日
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 2024年 11月 18日
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 2022年 1月 25日
Application note Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML 2021年 9月 30日
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 2021年 9月 2日
Functional safety information INA3221-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2020年 5月 20日
Application brief Energy and Power Monitoring with Digital Current Sensors 2017年 5月 25日
Application note Understanding the I2C Bus PDF | HTML 2015年 6月 30日

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)。

開發板

INA3221EVM — INA3221 評估模組

The INA3221EVM is a platform for evaluating the performance of the INA3221 under various signal, shunt, and supply conditions.

使用指南: PDF
TI.com 無法提供
程式碼範例或展示

SBOC424 — INA3221EVM Source Code

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驅動程式或資料庫

INA3221SW-LINUX — 適用於 INA3221 的 Linux 驅動程式

The Linux driver supports the INA3221 Triple Current/Power Monitor. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
  • ina3221
(...)
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開發模組 (EVM) 的 GUI

SBOC425 — INA3221EVM User Software

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模擬型號

INA3221 IBIS Model

SBOM761.ZIP (56 KB) - IBIS Model
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計算工具

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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CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool

This Excel calculator provides a comparison between two and five of our standard current sense amplifiers, delivering a chart containing the basic parameters of each device. This calculator also takes system condition inputs from users such as common-mode voltage, supply voltage, shunt resistor (...)
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計算工具

SBOR021 — Power Monitor Tool

Power Monitor Tool
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

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 (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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VQFN (RGV) 16 Ultra Librarian
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  • 進行中的可靠性監測
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