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MCP6491T-E

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Microchip Tech Operational Amplifier, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MCP6491T-E

Microchip Tech · Operational Amplifier · SOT-23-5

MCP6491T-E from Microchip Tech, in a SOT-23-5. 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 VOUT output Analog output of op amp A, which is a low-impedance voltage source.
2 VSS power_in Negative power supply; VDD must be 2.4V to 5.5V higher than VSS, and in typical single-supply operation VSS is connected to ground.
3 VIN+ power_in Non-inverting input of op amp A, a high-impedance CMOS input with low bias current.
4 VIN- power_in Inverting input of op amp A, a high-impedance CMOS input with low bias current.
5 VDD power_in Positive power supply, specified at 2.4V to 5.5V above VSS, which needs bypass capacitors.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-23-5
Category Amplifiers/Comparators
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Offset Voltage VOS -1.5 1.5 mV VDD = 3.0V, VCM =VDD/4 3
Power Supply Rejection Ratio PSRR 75 90 dB VCM =VDD/4 3
Input Bias Current IB 150 350 pA TA = +125°C 3
Common Mode Rejection Ratio CMRR 65 84 dB VCM = -0.3V to 2.7V, VDD = 2.4V 3
Common Mode Rejection Ratio CMRR 70 88 dB VCM = -0.3V to 5.8V, VDD = 5.5V 3
DC Open-Loop Gain (Large Signal) AOL 95 115 dB 0.2V < VOUT <(VDD, 0.2V); VDD = 5.5V, VCM =VSS 3
High-Level Output Voltage VOH 2.38 2.396 V VDD = 2.4V, 0.5V input overdrive 4
High-Level Output Voltage VOH 5.48 5.493 V VDD = 5.5V, 0.5V input overdrive 4
Low-Level Output Voltage VOL 0.004 0.02 V VDD = 2.4V, 0.5 V input overdrive 4
Low-Level Output Voltage VOL 0.007 0.02 V VDD = 5.5V, 0.5 V input overdrive 4
Supply Voltage VDD 2.4 5.5 V 4
Quiescent Current per Amplifier IQ 200 530 800 µA IO = 0, VCM =VDD/4 4
Operating Temperature Range TA -40 125 °C Note 1: internal junction temperature TJ must not exceed +150°C 4
Storage Temperature Range TA -65 150 °C 4
Thermal Resistance, 5L-SOT-23 JA 256 °C/W 4
Current at Input Pins -2 2 mA 3
Current at Output and Supply Pins -60 60 mA 3
Maximum Junction Temperature TJ 150 °C 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin 8-lead (TDFN) SN = Lead Plastic Small Outline (150 mil body), 47

CAD (KiCad official)

  • Symbol: MCP6491T-E
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: mcp6491t-e-etched.step / mcp6491t-e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp6491t-e.step / mcp6491t-e.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (50 pp, sha256 36b62696c4d9f8b2, retrieved 2026-10-18, tier: lcsc)
  • 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