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MAX4081SAUA+

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Maxim Integrated Current-Sensing Amplifiers, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentoperational amplifier-comparatormax4081saua+factory-2.0.0extractor-text

Verified MAX4081SAUA+

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MAX4081SAUA+ · MSOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 14-page datasheet
  • ✓distributor: lcsc C4550712, digikey MAX4081SAUA+-ND, mouser 700-MAX4081SAUA
  • ✓family: MSOP-8_3x3mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-syk8s9oy/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ max4081saua.kicad_sym✓ max4081saua.kicad_mod✓ max4081saua.step
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MAX4081SAUA+

Maxim Integrated · Current-Sensing Amplifiers · MSOP-8

MAX4081SAUA+ from Maxim Integrated, in a MSOP-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 RS+ input Power connection to the external-sense resistor, with a common-mode input range of 4.5V to 76V.
2 VCC power_in Supply voltage input operating from 4.5V to 76V; decouple VCC to GND with at least a 0.1µF capacitor to bypass line transients.
3 N.C. unconnected No connection; there is no internal connection, so leave open or connect to ground.
4 GND power_in Ground reference for the device.
5 OUT output Voltage output; for the bidirectional MAX4081, the difference voltage (VOUT - VREF) is proportional to VSENSE and indicates the correct polarity.
6 REF1B input Reference voltage input that must be connected to REF1A or to GND (see the External Reference section).
7 REF1A input Reference voltage input; connect REF1A and REF1B to a fixed reference voltage (VREF), and VOUT equals VREF when VSENSE is zero.
8 RS- input Load connection to the external sense resistor.

Key specifications

Parameter Value
Manufacturer Maxim Integrated
Package MSOP-8
Category Operational Amplifier/Comparator
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
Operating Voltage Range VCC 4.5 76 V Inferred from PSRR test 2
Common-Mode Range CMVR 4.5 76 V Inferred from CMRR test (Note 3) 2
Supply Current (MAX4081 row) ICC 103 190 µA VCC = VRS+ = 76V, no load 2
Leakage Current IRS+, IRS- 0.01 2 µA VCC = 0V, VRS+ = 76V 2
Input Bias Current IRS+, IRS- 5 12 µA VCC = VRS+ = 76V 2
Full-Scale Sense Voltage (MAX4081S) VSENSE -100 100 mV 2
Gain Accuracy, TA = +25°C DAV -0.6 0.1 0.6 % VCC = VRS+ = 48V; TA = +25°C 2
Gain Accuracy, TA = -40°C to +85°C DAV -1 1 % VCC = VRS+ = 48V; TA = -40°C to +85°C 2
Gain Accuracy, TA = TMIN to TMAX DAV -1.2 1.2 % VCC = VRS+ = 48V; TA = TMIN to TMAX 2
Input Offset Voltage, TA = +25°C VOS -0.6 0.1 0.6 mV VCC = VRS+ = 48V; TA = +25°C 2
Input Offset Voltage, TA = -40°C to +85°C VOS -1 1 mV VCC = VRS+ = 48V; TA = -40°C to +85°C 2
Input Offset Voltage, TA = TMIN to TMAX VOS -1.2 1.2 mV VCC = VRS+ = 48V; TA = TMIN to TMAX 2
Common-Mode Rejection Ratio CMRR 100 124 dB VCC = 48V, VRS+ = 4.5V to 76V 2
Power-Supply Rejection Ratio PSRR 100 122 dB VRS+ = 48V, VCC = 4.5V to 76V 2
OUT High Voltage (VCC, VOH) VCC, VOH 0.15 0.27 V VCC = 4.5V, VRS+ = 48V, VREF1A = VREF1B = 2.5V, IOUT (sourcing) = +500µA; VSENSE = 100mV (MAX4081S) 2
OUT Low Voltage VOL 4 15 mV VCC = VRS+ = 48V, VREF1A = VREF1B = 2.5V, VSENSE = -1000mV (for MAX4081 only); IOUT (sinking) = 10µA 3
OUT Low Voltage VOL 23 55 mV VCC = VRS+ = 48V, VREF1A = VREF1B = 2.5V, VSENSE = -1000mV (for MAX4081 only); IOUT (sinking) = 100µA 3
REF1A = REF1B Input Voltage Range (VREF, VGND) 1.5 6 V Inferred from REF1A rejection ratio, VREF1A = VREF1B 3
REF1A Input Voltage Range (VREF1A, VGND) 3 12 V Inferred from REF1A rejection ratio, VREF1B = VGND 3
REF1A Rejection Ratio 80 108 dB VCC = VRS+ = 48V, VSENSE = 0V, VREF1A = VREF1B = 1.5V to 6V 3
REF/REF1A Ratio 0.497 0.5 0.503 VREF1A = 10V, VREF1B = VGND, VCC = VRS+ = 48V (Note 2) 3
Bandwidth (MAX4081F/T/S) BW 150 kHz VCC = VRS+ = 48V, VOUT = 2.5V 4
REF1A Input Impedance 250 kW VREF1B = VGND 3
OUT Settling Time to 1% of Final Value 20 µs VSENSE = 10mV to 100mV 4
Capacitive-Load Stability 500 pF No sustained oscillations 4
Output Resistance ROUT 0.1 W VSENSE = 100mV 4
Power-Up Time 50 µs VCC = VRS+ = 48V, VSENSE = 100mV (Note 9) 4
Saturation Recovery Time 50 µs (Notes 9, 10) 4
VCC to GND VCC -0.3 80 V 2
RS+, RS- to GND RS+, RS- -0.3 80 V 2
OUT to GND OUT -0.3 18 V Lesser of +18V or (VCC + 0.3V) 2
REF1A, REF1B to GND (MAX4081 only) REF1A, REF1B -0.3 18 V Lesser of +18V or (VCC + 0.3V) 2
Differential Input Voltage VRS+ - VRS- -80 80 V 2
Current into Any Pin -20 20 mA 2
Operating Temperature Range TA -40 125 °C 2
Junction Temperature TJ 150 °C 2
Storage Temperature Range TSTG -65 150 °C 2
Lead Temperature (soldering, 10s) 300 °C Soldering, 10s 2
Soldering Temperature (reflow) 260 °C Reflow 2

CAD (KiCad official)

  • Symbol: MAX4081SAUA+
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: max4081saua-etched.step / max4081saua-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max4081saua.step / max4081saua.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Maxim Integrated datasheet (14 pp, sha256 1cd392785b0f1571, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF