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INA901-SP

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Radiation hardened, -15-V to 65-V, split-stage current sense amplifier with in-line filter option

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Data sheet

INA901-SP

ACTIVE
Data sheet Order now

Product details

Product type Analog output Common-mode voltage (max) (V) 65 Common-mode voltage (min) (V) -15 Input offset (±) (max) (µV) 2500 Input offset drift (±) (typ) (µV/°C) 2.5 Features Low-side Capable Rating Space Voltage gain (V/V) 20 CMRR (min) (dB) 100 Bandwidth (kHz) 130 Supply voltage (max) (V) 16 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.9 Number of channels 1 Comparators (#) 0 Gain error (%) 1.5 Gain error drift (±) (max) (ppm/°C) 50 Slew rate (V/µs) 1 Operating temperature range (°C) -55 to 125
Product type Analog output Common-mode voltage (max) (V) 65 Common-mode voltage (min) (V) -15 Input offset (±) (max) (µV) 2500 Input offset drift (±) (typ) (µV/°C) 2.5 Features Low-side Capable Rating Space Voltage gain (V/V) 20 CMRR (min) (dB) 100 Bandwidth (kHz) 130 Supply voltage (max) (V) 16 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.9 Number of channels 1 Comparators (#) 0 Gain error (%) 1.5 Gain error drift (±) (max) (ppm/°C) 50 Slew rate (V/µs) 1 Operating temperature range (°C) -55 to 125
CFP (HKX) 8 155.4 mm² 6.475 x 24
  • 5962-1821001
    • Radiation Hardness Assured (RHA)
      50 krad(Si) at Low Dose Rate
    • Single Event Latch-up (SEL)
      Immune to 75 MeV-cm2/mg at 125 °C
    • Qualified Over the Military
      Temperature Range (–55 °C to 125 °C)
    • High-Performance 8-Pin
      Ceramic Flat Pack Package (HKX)
  • Wide Common-Mode Range: –15 V to 65 V
  • CMRR: 120 dB
  • Accuracy:
    • ±0.5-mV Offset
    • ±0.2% Gain Error
    • 2.5-µV/°C Offset Drift
    • 50-ppm/°C Gain Drift
  • Bandwidth: Up to 130 kHz
  • Gain: 20 V/V
  • Quiescent Current: 700 µA
  • Power Supply: 2.7 V to 16 V
  • Provision for Filtering
  • 5962-1821001
    • Radiation Hardness Assured (RHA)
      50 krad(Si) at Low Dose Rate
    • Single Event Latch-up (SEL)
      Immune to 75 MeV-cm2/mg at 125 °C
    • Qualified Over the Military
      Temperature Range (–55 °C to 125 °C)
    • High-Performance 8-Pin
      Ceramic Flat Pack Package (HKX)
  • Wide Common-Mode Range: –15 V to 65 V
  • CMRR: 120 dB
  • Accuracy:
    • ±0.5-mV Offset
    • ±0.2% Gain Error
    • 2.5-µV/°C Offset Drift
    • 50-ppm/°C Gain Drift
  • Bandwidth: Up to 130 kHz
  • Gain: 20 V/V
  • Quiescent Current: 700 µA
  • Power Supply: 2.7 V to 16 V
  • Provision for Filtering

The INA901-SP is a voltage-output, current-sense amplifier that can sense drops across shunt resistors at common-mode voltages from –15 V to 65 V, independent of the supply voltage. The INA901-SP operates from a single 2.7-V to 16-V supply, drawing 700 µA (typical) of supply current.

The gain of the INA901-SP is 20 V/V. The 130-kHz bandwidth simplifies use in current-control loops. The pinouts readily enable filtering.

The device is specified over the extended operating temperature range of –55 °C to 125 °C and is offered in an 8-pin CFP package.

The INA901-SP is a voltage-output, current-sense amplifier that can sense drops across shunt resistors at common-mode voltages from –15 V to 65 V, independent of the supply voltage. The INA901-SP operates from a single 2.7-V to 16-V supply, drawing 700 µA (typical) of supply current.

The gain of the INA901-SP is 20 V/V. The 130-kHz bandwidth simplifies use in current-control loops. The pinouts readily enable filtering.

The device is specified over the extended operating temperature range of –55 °C to 125 °C and is offered in an 8-pin CFP package.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet INA901-SP Radiation Hardened, –15-V to 65-V Common Mode, Unidirectional Current-Shunt Monitor datasheet (Rev. C) PDF | HTML 30 Jun 2020
* Radiation & reliability report Single-Event Effects Test Report of the INA901-SP PDF | HTML 26 Mar 2024
* Radiation & reliability report INA901-SP Total Ionizing Dose (TID Report) 22 Sep 2020
* Radiation & reliability report INA901-SP Neutron Displacement Damage Characterization (Rev. B) PDF | HTML 17 Sep 2020
* SMD INA901-SP SMD INA901-SP SMD 5962-18210 08 Sep 2020
Application brief Precision High-Voltage Current Sensing Using Zener-Shifted Floating Ground and Isolated Digital Interface PDF | HTML 10 Dec 2025
Design guide Radiation-Hardened Space Battery Management System (BMS) Reference Design 30 Jul 2025
Application brief DLA Approved Optimizations for QML Products (Rev. C) PDF | HTML 17 Jun 2025
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations (Rev. B) PDF | HTML 10 Jun 2025
Selection guide TI Space Products (Rev. K) 04 Apr 2025
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. B) 20 Feb 2025
Circuit design Space-Grade, Overcurrent Protection Circuit for TPS7H500x-SP Using the INA901-SP PDF | HTML 16 Mar 2023
Application note Single-Event Effects Confidence Interval Calculations (Rev. A) PDF | HTML 19 Oct 2022
Technical article 3 tips to optimize data reliability with sensors in real-time control systems PDF | HTML 09 Aug 2022
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Application note Bidirectional Topologies for the INA901-SP PDF | HTML 08 Nov 2021
Application note Space-Grade, 50-krad, High-Side Bidirectional Current Sense Monitor PDF | HTML 08 Nov 2021
Application note Space-Grade, 50-krad, Low-Side Bidirectional Current Sense Monitor PDF | HTML 08 Nov 2021
Circuit design Space-Grade, 50-krad, Overcurrent Event-Detection Circuit PDF | HTML 20 Apr 2021
Technical article How current-sense amplifiers monitor satellite health PDF | HTML 08 Feb 2021
Technical article Satellite state of health: how space-grade ICs are improving telemetry circuit des PDF | HTML 26 Jan 2021
E-book Radiation Handbook for Electronics (Rev. A) 21 May 2019
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

INA901EVM-CVAL — INA901-SP Radiation Hardness Assured (RHA) Current-Shunt Monitor Evaluation Module

The INA901EVM-CVAL is an evaluation module (EVM) for the INA901-SP space grade current sense monitor. The EVM is user configurable so that a wide range of operating conditions and filtering options can be demonstrated. The board also contains an LM193QML-SP space grade comparator for evaluation as (...)
User guide: PDF
Not available on TI.com
Evaluation board

UC1843BEVM-CVAL — UC1843B-SP current mode PWM controller evaluation module

The UC1843BEVM-CVAL uses the UC1843A-SP, INA901-SP, LM139AQML-SP, and UC1901-SP to create an isolated feedback flyback with current sensing and over current flags. The UC1843A-SP is used to switch the low side MOSFET of the flyback converter and provide voltage and current to the output. The (...)
User guide: PDF
Not available on TI.com
Evaluation board

ALPHA-3P-VB630-SPACE-AMD — Alpha Data ADM-VB630 kit using AMD Versal edge XQRVE2302 ACAP and TI radiation-tolerant products

This is a 3U VPX form factor highlighting the AMD-Xilinx® Versal AI Edge XQRVE2302 Adaptable SoC/FPGA. The ADM-VB630 is  singleboard computer board. The majority of the components are radiation-tolerant power management, interface and sensing (-SEP) portfolio.

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Simulation model

INA901 PSpice Model

SBOMAS8.ZIP (52 KB) - PSpice Model
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Simulation model

INA901 TINA-TI Reference Design

SBOMAS9.TSC (4350 KB) - TINA-TI Reference Design
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Simulation model

INA901 TINA-TI Spice Model

SBOMAT0.ZIP (6 KB) - TINA-TI Spice Model
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Calculation tool

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 (...)

Supported products & hardware

Supported products & hardware
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Calculation tool

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 (...)
Supported products & hardware

Supported products & hardware
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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 (...)
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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 (...)
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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 (...)
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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 (...)
User guide: PDF
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Reference designs

TIDA-010931 — Radiation hardened space battery management system (BMS) reference design

This reference design demonstrates a space-grade battery management system. The circuit measures eight battery cells in series to monitor battery health, state of charge and temperature.
Design guide: PDF
Reference designs

PMP23193 — 50- to 150-VIN, 28-V 5-A synchronous buck converter reference design for 100-kRad space applications

This reference design is a 28-V output, 5-A synchronous buck converter for space applications operating from a 50-V to 150-V input range. The TPS7H5001-SP PWM controller controls the power stage. The INA901-SP senses the inductor current and provides current feedback to the controller enabling (...)
Test report: PDF
Reference designs

TIDA-010191 — Space-grade multichannel JESD204B 15-GHz clocking reference design

Phased-array antennas and digital beamforming are key technologies that will boost the performance of future spaceborne radar imaging and broadband satellite communication systems. Digital beamforming, unlike analog beamforming, typically requires a set of data converters per antenna element. (...)
Design guide: PDF
Reference designs

TIDA-010197 — Versatile satellite health monitoring and control platform reference design with < 1% accuracy

This reference design features a highly modular design for radiation-hardened satellite telemetry systems that utilizes the versatility of LMP7704-SP to accurately monitor temperature, voltage and current to provide feedback to the host board. It also provides controlled analog outputs to provide (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
CFP (HKX) 8 Ultra Librarian
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