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Analog current-sense amplifiers

INA240-SEP

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-4 to 80V, ultra-precise current sense amplifier w/ enhanced pwm rejection in space enhanced plastic

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Data sheet

INA240-SEP

ACTIVE
Data sheet Order now

Product details

Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -4 Input offset (±) (max) (µV) 25 Input offset drift (±) (typ) (µV/°C) 0.05 Voltage gain (V/V) 20 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 Gain error (%) 0.2 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 2 Features Bidirectional, Enhanced PWM Rejection, Low-side Capable, Ultra precise Rating Space Operating temperature range (°C) -55 to 125
Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -4 Input offset (±) (max) (µV) 25 Input offset drift (±) (typ) (µV/°C) 0.05 Voltage gain (V/V) 20 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 Gain error (%) 0.2 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 2 Features Bidirectional, Enhanced PWM Rejection, Low-side Capable, Ultra precise Rating Space Operating temperature range (°C) -55 to 125
TSSOP (PW) 8 19.2 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 PDF | HTML 20 Dec 2018
* Radiation & reliability report INA240-SEP Wide Common-Mode, High- and Low-Side, Bidirectional, Zero-Drift (Rev. A) PDF | HTML 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
Technical article 航太級強化產品如何因應低地球軌道應用的挑戰 (Rev. A) PDF | HTML 11 Jan 2024
Technical article 우주 항공 강화 제품이 저지구 궤도 애플리케이션의 과제를 해결하는 방법 (Rev. A) PDF | HTML 11 Jan 2024
Technical article How Space Enhanced Products Address Challenges in low Earth orbit Applications (Rev. A) PDF | HTML 18 Dec 2023
Application note Biasing GaN and LDMOS RF Power Amplifiers in Aerospace Apps Using AFE11612-SEP PDF | HTML 29 Jun 2023
Application brief Current Mode Control in Switching Power Supplies (Rev. E) PDF | HTML 12 Apr 2023
Application brief Current Sensing in an H-Bridge (Rev. D) PDF | HTML 07 Apr 2023
Application brief Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) PDF | HTML 07 Apr 2023
Application brief Switching Power Supply Current Measurements (Rev. E) PDF | HTML 07 Apr 2023
Application note Reduce the Risk in Low-Earth Orbit Missions with Space Enhanced Plastic Products (Rev. A) PDF | HTML 15 Sep 2022
Technical article 3 tips to optimize data reliability with sensors in real-time control systems PDF | HTML 09 Aug 2022
Circuit design Rad.-Tol., 30-krad, Comparing Current Sensing Amp W/ Second Stage Buffer to ADC PDF | HTML 19 May 2022
Selection guide TI Space Products (Rev. I) 03 Mar 2022
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Application brief High-Side Motor Current Monitoring for Over-Current Protection (Rev. B) PDF | HTML 23 Feb 2021
Technical article How current-sense amplifiers monitor satellite health PDF | HTML 08 Feb 2021
White paper Overcurrent protection enables more efficient and reliable systems 16 May 2016

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