INA250A4PWR

Current & Power Monitors & Regulators 36V, bi-directional, precision current sense amplifier w/int. shunt resistor 16-TSSOP -40 to 125
6,818 Effective Inventory

INA250A4PWR

Effective Inventory6,818

Current & Power Monitors & Regulators 36V, bi-directional, precision current sense amplifier w/int. shunt resistor 16-TSSOP -40 to 125

  • Manufacturer Part # : INA250A4PWR

  • Package/Case: TSSOP-16

  • Brand: Texas Instruments

  • Product Categories : Instrumentation, OP Amps, Buffer Amps

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Service & Packaging

Service & Packaging

About After Sales Service

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INA250A4PWR DataSheet
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Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

Rapid Quote

Please submit RFQ for INA250A4PWR or email to us: Email: [email protected], we will contact you in 12 hours.

Details

The INA250A4PWR is a cutting-edge voltage-output, current-sensing amplifier designed for high-accuracy current measurements. Its integration of an internal shunt resistor allows for seamless measurement of common-mode voltages ranging from 0 V to 36 V, regardless of the supply voltage. This bidirectional, low- or high-side current-shunt monitor also offers the flexibility of using an external reference to measure current flow in both directions through the internal sensor. With the precision current-sensing resistor and ultra-low temperature drift performance, the INA250A4PWR ensures calibration-equivalent measurement accuracy and an optimized Kelvin layout for the sensing resistor

Key Features

  • Fast Response Time: 40 μs
  • High Impedance Input: 101 kΩ
  • Low Noise Floor: 1.5 μV
  • Wide Supply Range: ±4 V to ±20 V
  • Low Power Consumption: 2.3 mA (Typ)
  • High Gain Bandwidth: 200 kHz

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0
Input offset (±) (max) (µV) 20000, 30000, 50000, 100000 Gain error (%) 0.75
Gain error drift (±) (max) (ppm/°C) 45 CMRR (min) (dB) 100
Bandwidth (kHz) 11, 35, 50 Supply voltage (max) (V) 36
Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.3
Features Bidirectional, Integrated Shunt, Low-side Capable Rating Catalog
Operating temperature range (°C) -40 to 125

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification INA250A4PWR PDF Download

FAQs

What is INA250A4PWR?

The INA250A4PWR is a precision, bidirectional current and power monitoring IC (integrated circuit) designed by Texas Instruments. It is suitable for applications requiring accurate measurement of current flowing in both directions, such as power supplies, battery charging, and motor control systems.

How Does INA250A4PWR Work?

The INA250A4PWR works by measuring the voltage across a shunt resistor in series with the current path. It utilizes a precision instrumentation amplifier and an analog-to-digital converter to accurately sense the voltage drop across the shunt and convert it into a digital representation of the current. With bidirectional measurement capability, it can accurately monitor both charging and discharging currents in a system.

How Many Pins does INA250A4PWR have and What are the Functions of the Pinout Configuration?

The INA250A4PWR is housed in a 14-pin TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:

  • VS+: Positive power supply pin.
  • VS-: Negative power supply pin.
  • V+: Load-side power supply pin.
  • V-: Load-side ground pin.
  • OUT: Current output or voltage output pin, depending on the operating mode.
  • SCL, SDA: I2C interface communication pins.
  • STANDBY: Standby pin for device control.
  • FAULT: Fault indication output pin.

What are the Pros and Cons of INA250A4PWR?

Pros:

  • Precision Measurement: Provides accurate current and power monitoring with wide dynamic range.
  • Bidirectional Capability: Allows monitoring of both charging and discharging currents in a system.
  • I2C Interface: Supports digital communication for easy integration into microcontroller-based systems.
  • Small Footprint: The TSSOP package offers a compact footprint for space-constrained designs.

Cons:

  • External Components: May require additional external components, such as a shunt resistor and decoupling capacitors, for optimal performance.
  • Complexity: Requires careful consideration of layout and noise for accurate current sensing.
  • Cost: Precision current monitoring ICs may have a higher cost compared to simpler current sensing solutions.

Are There Any Equivalents/Alternatives to INA250A4PWR for Recommendation?

  • The INA219 from Texas Instruments is a similar bidirectional current sensor with a lower voltage range.
  • Alternatives to the INA250A4PWR include the MAX4376 from Maxim Integrated and the ACS722 from Allegro MicroSystems.

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