Product details

Common mode voltage (Max) (V) 80 Common mode voltage (Min) (V) -4 Input offset (+/-) (Max) (uV) 25 Input offset drift (+/-) (Typ) (uV/C) 0.05 Gain (V/V) 20 Gain error (%) 0.2 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 120 Bandwidth (kHz) 400 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 2.6 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, Enhanced PWM Rejection, Low-side Capable, Ultra precise Rating Space Operating temperature range (C) -55 to 125
Common mode voltage (Max) (V) 80 Common mode voltage (Min) (V) -4 Input offset (+/-) (Max) (uV) 25 Input offset drift (+/-) (Typ) (uV/C) 0.05 Gain (V/V) 20 Gain error (%) 0.2 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 120 Bandwidth (kHz) 400 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 2.6 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, Enhanced PWM Rejection, Low-side Capable, Ultra precise Rating Space Operating temperature range (C) -55 to 125
TSSOP (PW) 8 19 mm² 3 x 6.4
  • VID V62/18615
  • Radiation Hardened
    • Single Event Latch-up (SEL) Immune to 43 MeV-cm2/mg at 125°C
    • ELDRS Free to 30 krad(Si)
    • Total Ionizing Dose (TID) RLAT for Every Wafer Lot up to 20 krad(Si)
  • Space Enhanced Plastic
    • Controlled Baseline
    • Gold Wire
    • NiPdAu Lead Finish
    • One Assembly and Test Site
    • One Fabrication Site
    • Available in Military (–55°C to 125°C) Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
    • Enhanced Mold Compound for Low Outgassing
  • Enhanced PWM Rejection
  • Excellent CMRR: 132 dB (Typical)
  • Wide Common-Mode Range: –4 V to 80 V
  • Gain: 20 V/V:
    • Gain Error: 0.2% (Maximum)
    • Gain Drift: 2.5 ppm/°C (Maximum)
  • Offset Voltage: ±25 µV (Maximum)
  • Offset Drift: 250 nV/°C (Maximum)
  • Quiescent Current: 2.4 mA (Maximum)
  • VID V62/18615
  • Radiation Hardened
    • Single Event Latch-up (SEL) Immune to 43 MeV-cm2/mg at 125°C
    • ELDRS Free to 30 krad(Si)
    • Total Ionizing Dose (TID) RLAT for Every Wafer Lot up to 20 krad(Si)
  • Space Enhanced Plastic
    • Controlled Baseline
    • Gold Wire
    • NiPdAu Lead Finish
    • One Assembly and Test Site
    • One Fabrication Site
    • Available in Military (–55°C to 125°C) Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
    • Enhanced Mold Compound for Low Outgassing
  • Enhanced PWM Rejection
  • Excellent CMRR: 132 dB (Typical)
  • Wide Common-Mode Range: –4 V to 80 V
  • Gain: 20 V/V:
    • Gain Error: 0.2% (Maximum)
    • Gain Drift: 2.5 ppm/°C (Maximum)
  • Offset Voltage: ±25 µV (Maximum)
  • Offset Drift: 250 nV/°C (Maximum)
  • Quiescent Current: 2.4 mA (Maximum)

The INA240-SEP device is a voltage-output, current-sense amplifier with enhanced PWM rejection that can sense drops across shunt resistors over a wide common-mode voltage range from –4 V to 80 V, independent of the supply voltage. The negative common-mode voltage allows the device to operate below ground, accommodating the flyback period of typical solenoid applications. Enhanced PWM rejection provides high levels of suppression for large common-mode transients (ΔV/Δt) in systems that use pulse width modulation (PWM) signals (such as motor drives and solenoid control systems). This feature allows for accurate current measurements without large transients and associated recovery ripple on the output voltage.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 2.4 mA of supply current. The fixed gain is 20 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10-mV full-scale.

The INA240-SEP device is a voltage-output, current-sense amplifier with enhanced PWM rejection that can sense drops across shunt resistors over a wide common-mode voltage range from –4 V to 80 V, independent of the supply voltage. The negative common-mode voltage allows the device to operate below ground, accommodating the flyback period of typical solenoid applications. Enhanced PWM rejection provides high levels of suppression for large common-mode transients (ΔV/Δt) in systems that use pulse width modulation (PWM) signals (such as motor drives and solenoid control systems). This feature allows for accurate current measurements without large transients and associated recovery ripple on the output voltage.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 2.4 mA of supply current. The fixed gain is 20 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10-mV full-scale.

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Technical documentation

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Type Title Date
* Data sheet INA240-SEP Wide Common-Mode Range, High- and Low-Side, Bidirectional, Zero-Drift, Current-Sense Amplifier in Space Enhanced Plastic datasheet 20 Dec 2018
* Radiation & reliability report INA240-SEP Wide Common-Mode, High- and Low-Side, Bidirectional, Zero-Drift (Rev. A) 01 Mar 2021
* Radiation & reliability report INA240-SEP Single-Event Latch-Up (SEL) Radiation Report 14 Aug 2020
* VID INA240-SEP VID INA240-SEP VID V6218615 04 Aug 2020
* Radiation & reliability report INA240-SEP Reliability Report 28 Feb 2019
Application note Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. C) 28 Sep 2021
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application 14 Jun 2021
Application note High-Side Motor Current Monitoring for Over-Current Protection (Rev. B) 23 Feb 2021
Technical article How current-sense amplifiers monitor satellite health 08 Feb 2021
Application note Current Sensing in an H-Bridge (Rev. B) 05 Feb 2021
Selection guide TI Space Products (Rev. H) 27 Jan 2021
Application note Current Measurements in Power Supplies (Rev. B) 29 Dec 2020
Application note Current Mode Control in Switching Power Supplies (Rev. B) 29 Dec 2020
Technical article Space Enhanced Plastic gives designers a new solution for emerging low-Earth orbit commercial applications 03 Oct 2019
Application note Reduce the risk in NewSpace with Space Enhanced Plastic products 29 Jul 2019
Technical article A key to accurate system thermal management: monitoring both current flow and temperature 04 Oct 2018
White paper Overcurrent protection enables more efficient and reliable systems 16 May 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

INA240EVM — High or Low Side Current Sensing Amplifier for PWM Applications Evaluation Module

Evaluate the performance of the INA240 current sense amplifier with the INA240 evaluation module. The INA240EVM package includes one large PCB that can be broken apart into four separate PCBs, one for each of the four gain versions (INA240A1/A2/A3/A4).

 The EVM includes test points for external (...)

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Simulation model

INA240 TINA-TI Spice Model (Rev. A)

SBOMAC7A.ZIP (28 KB) - TINA-TI Spice Model
Simulation model

INA240 TINA-TI Reference Design (Rev. A)

SBOMAC8A.TSC (440 KB) - TINA-TI Reference Design
Simulation model

INA240 PSpice Model

SBOMB42.ZIP (48 KB) - PSpice Model
Simulation model

INA240A3 PSpice Model

SBOMBC6.ZIP (23 KB) - PSpice Model
Simulation model

INA240A1 PSpice Model

SBOMBE4.ZIP (23 KB) - PSpice Model
Simulation model

INA240A2 PSpice Model

SBOMBG4.ZIP (23 KB) - PSpice Model
Simulation model

INA240A4 PSpice Model

SBOMBG5.ZIP (25 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Design tool

CIRCUIT060035 — Bidirectional current sensing with a window comparator circuit

This bidirectional current sensing solution uses a current-sense amplifier and a high-speed dual comparator with a rail-to-rail input common mode range to create over-current (OC) alert signals at the comparator outputs (OUTA and OUTB) if the input current (IG1) rises above 100 A or falls below (...)
Design tool

CIRCUIT060037 — Precision over-current latch circuit

This high-side, current sensing solution uses a current sense amplifier, a comparator with an integrated reference and a P-channel MOSFET to create an over-current latch circuit. When a load current greater than 200 mA is detected, the circuit disconnects the system from its power source. The (...)
Reference designs

TIDA-00302 — Current Shunt Monitor with Transient Robustness Reference Design

This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.

Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)

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