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TI INA239AIDGSRRoHS

Manufacturer
TI
MPN
INA239AIDGSR
LCSC Part #
C2876522
Packaging
VSSOP-10-0.5mm
Customer #
Key Attributes
16-bit, high-precision power monitor with SPI interface
Datasheetpdf iconTI INA239AIDGSR
In-Stock: 272
272 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 4.9691$ 4.97
10+$ 4.3152$ 43.15
30+$ 3.9265$ 117.80
100+$ 3.5329$ 353.29
500+$ 3.3523$ 1676.15
1,000+$ 3.2694$ 3269.40
Standard Packaging2500/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Power Supply Controllers, Monitors
ManufacturerTI
PackagingVSSOP-10-0.5mm
Vcm - Common Mode Voltage-300mV~85V
Bandwidth-
Input Offset Current(Ios)-
Ib - Input Bias Current2.5nA
Quiescent Current640uA
Vos - Input Offset Voltage1.5uV
Operating Temperature-40℃~+125℃
Operating Voltage2.7V~5.5V
Common Mode Rejection Ratio(CMRR)160dB
Output Current10mA
Gain-
Input Offset Voltage Drift(Vos TC)20nV/℃
FeaturesPower monitoring;Integrated ADC;Digital output interface;High-side detection;Low-side detection;Bidirectional detection;Programmable threshold alarm;Enable/shutdown function;Input filter;Zero drift / auto-zero
Number of Channels-
Differential Voltage±163.84mV
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The INA239 is an ultra-precise digital power monitor featuring a 16-bit Δ-Σ ADC designed for current sensing applications. The device measures ±163.84mV or ±40.96mV full-scale differential input across a resistive shunt sensing element with a common-mode voltage support range of -0.3V to +85V. The INA239 reports current, bus voltage, temperature, and power while performing the required calculations in the background. The integrated temperature sensor provides ±1°C accuracy for die temperature measurement and can be used to monitor system ambient temperature. The INA239 features low temperature drift and gain drift design, enabling use in precision systems without multi-temperature calibration during manufacturing. In addition, the very low offset voltage and noise allow use in sensing applications from A to kA, providing a wide dynamic range across the sense shunt element without significant power loss. The device's low input bias current allows the use of larger current sense resistors, enabling accurate current measurements at the microamp level. The device allows selection of ADC conversion times from 50μs to 4.12ms and sampling averages from 1x to 1024x, which helps further reduce noise in measurement data.

Features

AI Translation
  • Current monitoring accuracy:
    • High-resolution, 16-bit Δ-Σ ADC
    • Offset voltage: ±5μV (maximum)
    • Offset drift: ±0.02μV/°C (maximum)
    • Gain error: ±0.1% (maximum)
    • Gain error drift: ±25ppm/°C (maximum)
    • Common-mode rejection: 140dB (minimum)
  • Power monitoring accuracy: 0.7% full-scale, -40°C to +125°C (maximum)
  • Fast alert response: 75μs
  • Wide common-mode range: -0.3V to +85V
  • Bus voltage sense input: 0V to 85V
  • Shunt full-scale differential range: ±163.84mV/±40.96mV
  • Input bias current: 2.5nA (maximum)
  • Temperature sensor: ±1°C (maximum at 25°C)
  • Programmable conversion time and averaging
  • 10MHz SPI interface
  • Operates from 2.7V to 5.5V supply voltage:
    • Operating current: 640μA (typical)
    • Shutdown current: 5μA (maximum)

Applications

AI Translation
  • DC/DC converters and power inverters
  • Industrial battery packs
  • Power over Ethernet (PoE)
  • Telecommunications equipment
  • Enterprise servers