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MCP6421
  • MCP6421
  • MCP6421

MCP6421

In Production

The Microchip’s MCP6421/2/4 operational amplifiers (op amps) has low input bias current (1 pA, typical) and rail-to-rail input and output operation. This family is unity gain stable and has a gain bandwidth product of 90 kHz (typical). These devices operate with a single-supply voltage as low as 1.8V, while only drawing 4.4 µA/amplifier (typical) of quiescent current. These features make the family of op amps well suited for photodiode amplifier, pH electrode amplifier, low leakage amplifier, and battery powered signal conditioning applications, etc. The MCP6421 family is offered in SOT23 and SC70 packages. All devices are designed using an advanced CMOS process and fully specified in extended temperature range from -40°C to +125°C....

Microchip Technology MCP6421 Product Info

16 April 2026 0

Parameters

CMRR Min (dB)

90

Enhanced EMI Protection

Yes

Gain Bandwidth Product kHz (kilohertz)

90

Iq Max (uA)

5.5

Input Voltage Noise Density (nV/rt(Hz))

95

Iq Typical (µA)

4.4

Operating Voltage Max V (volt)

5.5

Operating Voltage Min V (volt)

1.8

PM (deg)

55

PSRR Min (dB)

90

# Per Package

1

Slew Rate (V/µs)

0.05

Vos Max µV (microvolt)

1000

Features

  • Gain Bandwidth Product: 90 kHz (typical)
  • Supply Voltage: 1.8V to 5.5V
  • Supply Current: IQ = 4.4 µA (typical)
  • Input Bias Current: Ibias = 1 pA (typical)
  • EMIRR at 1.8 GHz: 97 dB (typical)
  • Phase Margin: 57° (typical)
  • Rail-to-Rail Input/Output
  • Extended: -40°C to +125°C
  • Singles available in SC-70-5 and SOT-23-5 packages

Description

The Microchip’s MCP6421/2/4 operational amplifiers (op amps) has low input bias current (1 pA, typical) and rail-to-rail input and output operation. This family is unity gain stable and has a gain bandwidth product of 90 kHz (typical). These devices operate with a single-supply voltage as low as 1.8V, while only drawing 4.4 µA/amplifier (typical) of quiescent current. These features make the family of op amps well suited for photodiode amplifier, pH electrode amplifier, low leakage amplifier, and battery powered signal conditioning applications, etc. The MCP6421 family is offered in SOT23 and SC70 packages. All devices are designed using an advanced CMOS process and fully specified in extended temperature range from -40°C to +125°C.

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