Low Power, Low Voltage Op Amps, INAs, Comparators and PGA/SGAs

Operational Amplifiers

Microchip’s family of operational amplifiers are suitable for low power, precision and general purpose applications. Select devices operate down to 1.4V and feature rail-to-rail inputs and outputs for improved system performance and low current consumption for extended battery life (600 nA for the MCP604X and MCP614x families). These products span a wide range of performance including low offset voltage, low bias current, high speed operation, high open-loop gain and other options for the embedded system designer.

Instrumentation Amplifiers

Microchip has expanded its portfolio of amplifiers by introducing the industry’s first instrumentation amplifier featuring mCal technology. The MCP6N11 features rail-to-rail input and output, low 1.8V operation and low offset/offset drift.

Comparators
Microchip offers several families of comparators to suit a variety of application needs. The MCP6541/2/3/4 and the MCP6546/7/8/9 families of push-pull and open-drain comparators are designed for very low power single-supply applications. The MCP6561/2/4 and MCP6566/7/9 families offer a higher speed alternative (47 ns propagation delay) while still maintaining low current consumption (100 μA typical).

The MCP6541/2/3/4 and MCP6561/2/4 families of comparators have a push-pull output that interfaces with CMOS/TTL logic. The output limits supply current surges and dynamic power consumption while switching. The MCP6546/7/8/9 and MCP6566/7/9 families of comparators have an open-drain output that can be used as a voltage level shifter.

Programmable Gain Amplifier (PGA)/Selectable Gain Amplifier (SGA)
PGA: Gain & Channel Selection Over an SPI™ Interface
Microchip offers SPI™ Bus Programmable Gain Amplifiers with built-in analog Multiplexer, 1, 2, 6 or 8 input channels, and eight steps of gain. Since these devices are programmable over an SPI™ bus, they add gain control and input channel selection to the embedded control system in one simple integration that allows for considerably greater bandwidth at a low supply current.
SGA: Gain Selection Via a Hardware Pin
Microchip’s family of Selectable Gain Amplifiers (MCP6G0x) offer single, dual and quad op amp packages in the industry standard pinout. However, the pin typically connected to the inverting input is actually a logic input pin which allows the amplifier to be configured for gains of 1, 10 or 50 V/V.