component
INA241A2IDR
Public Made by Adomby adom
Texas Instruments Current Sense Amplifiers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownINA241A2IDR
Texas Instruments · Current Sense Amplifiers · SOIC-8
INA241A2IDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IN- | input | Current-sense amplifier negative input; connect to load side of the sense resistor for high-side applications or ground side for low-side applications, with common-mode range −5V to 110V (survival −20V to 120V). |
| 2 | GND | power_in | Ground. |
| 3 | REF2 | input | Reference 2 voltage input; connect to a potential from 0V to VS, with no operational difference from REF1 and the output set at the midpoint of REF1 and REF2 at 0V input. |
| 4 | NC | unconnected | Reserved pin that the datasheet says to connect to ground. |
| 5 | OUT | output | Output voltage, bound between GND − 0.3V and VS + 0.3V (absolute maximum). |
| 6 | VS | power_in | Power supply, 2.7V to 20V operating (22V absolute maximum). |
| 7 | REF1 | input | Reference 1 voltage input; connect to a potential from 0V to VS, with no operational difference from REF2. |
| 8 | IN+ | input | Current-sense amplifier positive input; connect to bus-voltage side of the sense resistor for high-side applications or load side for low-side applications, with common-mode range −5V to 110V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (absolute max) | VS | 22 | V | 4 | |||
| Differential input voltage | VIN+ − VIN- | -30 | 30 | V | (VIN+) − (VIN-) | 4 | |
| Common-mode input voltage (absolute max) | VCM | -20 | 120 | V | Analog inputs VIN+, VIN- | 4 | |
| Operating temperature (absolute max) | TA | -55 | 150 | °C | 4 | ||
| Junction temperature | TJ | 150 | °C | 4 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| ESD HBM | V(ESD) | -2000 | 2000 | V | HBM, ANSI/ESDA/JEDEC JS-001, all pins | 4 | |
| ESD CDM | V(ESD) | -1000 | 1000 | V | CDM, ANSI/ESDA/JEDEC JS-002, all pins | 4 | |
| Common-mode input range (recommended) | VCM | -5 | 48 | 110 | V | 4 | |
| Operating supply range | VS | 2.7 | 5 | 20 | V | 4 | |
| Ambient temperature | TA | -40 | 125 | °C | 4 | ||
| Junction-to-ambient thermal resistance | RθJA | 122.9 | °C/W | D (SOIC) 8 pins | 4 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 54.7 | °C/W | D (SOIC) 8 pins | 4 | ||
| Junction-to-board thermal resistance | RθJB | 68.8 | °C/W | D (SOIC) 8 pins | 4 | ||
| Junction-to-top characterization parameter | ΨJT | 12.2 | °C/W | D (SOIC) 8 pins | 4 | ||
| Junction-to-board characterization parameter | ΨJB | 67.5 | °C/W | D (SOIC) 8 pins | 4 | ||
| Common-mode input range | VCM | -5 | 110 | V | VIN+, VIN- = -5V to 110V, VSENSE = 0mV, TA = -40°C to 125°C | 5 | |
| Common-mode rejection ratio, input-referred | CMRR | 150 | 166 | dB | VIN+, VIN- = -5V to 110V, VSENSE = 0mV, TA = -40°C to 125°C, INA241A | 5 | |
| Common-mode rejection ratio at 50kHz | CMRR | 105 | dB | f = 50kHz | 5 | ||
| Offset voltage, input-referred | Vos | -15 | 3 | 15 | µV | VSENSE = 0mV, INA241A2 | 5 |
| Offset voltage drift, input-referred | dVos/dT | -150 | 30 | 150 | nV/°C | TA = -40°C to 125°C, INA241A2 | 5 |
| Power-supply rejection ratio, input-referred | PSRR | -0.75 | 0.1 | 0.75 | µV/V | VS = 2.7V to 20V, VSENSE = 0mV, VREF1 = VREF2 = 1V, TA = -40°C to 125°C, INA241A2 | 5 |
| Input bias current | IB | 25 | 35 | 45 | µA | IB+, IB-, VSENSE=0mV | 5 |
| Gain | G | 20 | V/V | A2, B2 Devices | 5 | ||
| Gain error | GERR | -0.01 | 0.002 | 0.01 | % | (GND + 50mV) < VOUT < (VS - 200mV), INA241A2 | 6 |
| Gain error drift | -1 | 0.05 | 1 | ppm/°C | TA = -40°C to +125°C, INA241A2 | 6 | |
| Non-linearity error | 0.001 | % | 6 | ||||
| Maximum capacitive load | 1 | nF | No sustained oscillations, No isolation resistor | 6 | |||
| Swing to VS power supply rail (offset from VS) | -0.07 | -0.2 | V | RL = 10kΩ to GND, TA = -40°C to +125°C; printed VS − 0.07 / VS − 0.2 | 6 | ||
| Swing to ground | 8 | 20 | mV | RL = 10kΩ to GND, VSENSE = 0mV, VREF1 = VREF2 = 0V, TA = -40°C to +125°C | 6 | ||
| Reference voltage rejection ratio, input-referred | RVRR | -1.5 | 0.5 | 1.5 | µV/V | VREF1 = VREF2 = 0.5V to 4.5V, TA = -40°C to +125°C, INA241A2 | 6 |
| Reference divider accuracy | -0.005 | 0.002 | 0.005 | % | VOUT = /(VREF1 + VREF2)/ / 2 at VSENSE =0mV, TA = -40°C to +125°C, INA241A2 | 6 | |
| Bandwidth | BW | 1.1 | MHz | All Gains, −3dB Bandwidth | 6 | ||
| Settling time to 0.5% | 1.5 | µs | VIN+, VIN- = 48V, VOUT = 0.5V to 4.5V, Output settles to 0.5% | 6 | |||
| Settling time to 1% | 1 | µs | VIN+, VIN- = 48V, VOUT = 0.5V to 4.5V, Output settles to 1% | 6 | |||
| Settling time to 5% | 0.5 | µs | VIN+, VIN- = 48V, VOUT = 0.5V to 4.5V, Output settles to 5% | 6 | |||
| Slew rate | SR | 8 | V/µs | Rising | 6 | ||
| Voltage noise density | 49 | nV/√Hz | A2, B2 Devices | 7 | |||
| Supply voltage | VS | 2.7 | 20 | V | 7 | ||
| Quiescent current | IQ | 2.5 | 3 | mA | VSENSE = 0mV | 7 | |
| Quiescent current over temperature | IQ | 3.2 | mA | VSENSE = 0mV, TA = -40°C to +125°C | 7 | ||
| Specified temperature range | TA | -40 | 125 | °C | 7 |
CAD (KiCad official)
- Symbol:
INA241A2IDR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ina241a2idr-etched.step/ina241a2idr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina241a2idr.step/ina241a2idr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
d0f0d3a73c1bc2b4, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).