MCP602T-I/SN is a member of Microchip's MCP6xx series precision operational amplifiers. The device features a CMOS input stage enabling true rail-to-rail input common-mode range (VSS-0.3V to VDD+0.3V) and rail-to-rail output swing (within 10mV of either rail at 1mA load). Operating supply voltage range is 2.7V to 5.5V, fully compatible with 3.3V and 5V logic systems.

The op-amp's core advantages are its extremely low input-referred noise voltage density (6.5nV/rtHz @ 1kHz) and ultra-low input bias current (typ. 1pA), making it an ideal choice for high-impedance sensor interfaces such as thermocouple amplifiers, photodiode preamplifiers, and Wheatstone bridge amplifiers. With 7MHz unity-gain bandwidth and 2.5V/us slew rate, it supports audio-frequency signal processing.

The SOIC-8 package (standard footprint also available in SOIC-14 and MSOP/TSSOP) is pin-compatible with industry-standard op-amp pinouts, facilitating easy replacement of precision op-amps from other manufacturers (e.g., OPA234, TLV274).

Note: For detailed electrical parameters, refer to the official MCP602 datasheet. Engineers must verify all parameters before final design. Note that low-frequency 1/f (flicker) noise adds to the white noise floor at very low frequencies, requiring additional filtering in ultra-low-frequency applications.

MCP602T-I/SN uses the SOIC-8 package (Small Outline Integrated Circuit, 8-pin), measuring 3.9mm x 4.9mm (W x L) with 1.27mm pin pitch, fully compatible with standard SMT assembly processes. SOIC-8 is one of the most common op-amp packages, pin-compatible with industry-standard op-amp pinouts, facilitating easy cross-vendor replacement.

The 8 pins include: 2 input pins (IN+, IN-), 1 output pin, 2 power pins (VDD, VSS/GND), and 3 NC (no-connect) pins. The gull-wing leads ensure high solder joint reliability and are suitable for automated optical inspection (AOI). No exposed thermal pad on the bottom; thermal resistance is determined primarily by the plastic body and lead frame.

MCP602T-I/SN SOIC-8 pinout (top view, pin numbers counterclockwise from the notch):

• Pin 1 - NC: Internally unconnected. May be left open or tied to ground for routing flexibility.
• Pin 2 - IN+ (Non-Inverting Input): Non-inverting (positive) input. Input impedance >10^13 ohms; input bias current ~1pA.
• Pin 3 - IN- (Inverting Input): Inverting (negative) input. Bias current matches IN+, also ~1pA.
• Pin 4 - VSS (Negative Supply/GND): Negative supply pin. For single-supply, connect to ground (0V). For dual-supply, connect to negative rail (e.g., -2.5V).
• Pin 5 - NC: Internally unconnected, leave floating.
• Pin 6 - OUTPUT: Amplifier output. Rail-to-rail; can drive >1mA loads (heavier loads reduce output swing).
• Pin 7 - VDD (Positive Supply): Positive supply pin, 2.7V to 5.5V single-supply. Place a 0.1uF decoupling capacitor close to this pin between VDD and VSS.
• Pin 8 - NC: Internally unconnected, leave floating.

The following alternative parts are listed for reference. Before selecting an alternative, verify supply voltage, bandwidth, noise specifications, package compatibility, and pinout differences.

Selection Tips: MCP602T-I/SN excels in precision sensor interfaces where ultra-low noise and RRIO are both required. For higher bandwidth and slew rate (signals >100kHz), consider MCP6273 (15MHz GBW, 10V/us SR). For lower power consumption (battery-powered), MCP6001 (50uA quiescent, 17x lower) is ideal.

Microchip Technology Inc. (NASDAQ: MCHP), headquartered in Chandler, Arizona, USA, is a leading global supplier of microcontrollers, analog semiconductors, and Flash-IP solutions. Microchip's operational amplifier portfolio (MCP6xx series) spans general-purpose op-amps through precision instrumentation amplifiers, known for high value and pin-compatible cross-vendor replacements for TI, Maxim, and ST products.

MCP602 belongs to Microchip's precision op-amp family, positioned between general-purpose op-amps (MCP6001/2/4 series) and high-end instrumentation amplifiers (e.g., MCP6N11). Its key differentiator is combining low noise (6.5nV/rtHz) with rail-to-rail I/O, while offering multiple package options (SOIC-8, SOT-23-5, MSOP-8) with industry-standard pinouts, enabling engineers to flexibly select variants based on precision requirements and PCB space constraints.