MCP6S28-I/P

Overview

The MCP6S28-I/P is an eight-channel analog Programmable Gain Amplifier (PGA) from Microchip Technology, housed in a 16-pin PDIP package. It supports gains from +1 V/V to +32 V/V and features rail-to-rail input and output capabilities. The device operates on a single supply voltage ranging from 2.5V to 5.5V with a typical quiescent current of 1.0 mA. It utilizes a Serial Peripheral Interface (SPI) for channel selection, gain configuration, and power-down control. Key electrical specifications include a maximum input offset voltage of ±275 µV, a bandwidth between 2 MHz and 12 MHz, and operation across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Eight multiplexed analog input channels selectable via SPI interface
• Rail-to-rail input and output capability for single-supply applications
• Configurable gain settings ranging from +1 V/V to +32 V/V
• Low offset voltage and low noise characteristics optimized for precision signal conditioning

Applications

• A/D Converter Driver
• Multiplexed Analog Applications
• Data Acquisition Systems
• Industrial Instrumentation
• Medical Instrumentation

Procurement Notes

Verify the specific suffix 'I/P' corresponds to the Industrial temperature range (-40°C to +85°C) and the 16-pin PDIP package type as defined in the official datasheet. Confirm that the ordering part number matches the exact pinout and electrical specifications required for your design. Cross-reference the manufacturer's latest documentation to ensure component availability and compliance status before finalizing procurement.

Selection Notes

Select this component when designing systems requiring flexible gain adjustment for multiple analog inputs without external discrete components. The integrated multiplexer simplifies board layout compared to separate switch and amplifier solutions. Ensure the application voltage stays within the 2.5V to 5.5V range and consider the SPI interface compatibility with the host microcontroller. Evaluate the bandwidth requirements against the gain setting, as bandwidth varies between 2 MHz and 12 MHz depending on the selected gain.

Part Context

This device belongs to the MCP6S2X family of programmable gain amplifiers, which includes variants with one, two, six, and eight channels. The MCP6S28 specifically provides the highest channel count in this series, making it suitable for complex data acquisition tasks. All members share similar electrical characteristics and SPI control protocols, allowing for scalable design architectures within Microchip's analog portfolio.

Replacement Considerations

Compatible substitutes within the same family include MCP6S21, MCP6S22, and MCP6S26. Note that these alternatives offer fewer input channels (1, 2, or 6 respectively) but maintain identical electrical performance and SPI interfaces. Verify package compatibility if replacing with other family members, as pin counts differ.