MCP6S28T-I/SL

Overview

The MCP6S28T-I/SL is an eight-channel analog Programmable Gain Amplifier (PGA) from Microchip Technology, housed in a 16-pin SOIC package. It features an SPI interface for selecting one of eight inputs and setting gains ranging from +1 V/V to +32 V/V. The device operates on a single supply voltage between 2.5V and 5.5V with rail-to-rail input and output capabilities. Key electrical specifications include a typical bandwidth of 2 MHz to 12 MHz, a maximum input offset voltage of ±275 µV, and a quiescent current of 1.0 mA.

Feature Summary

• Eight multiplexed analog input channels selectable via Serial Peripheral Interface
• Programmable gain settings ranging from +1 V/V to +32 V/V
• Rail-to-rail input and output operation for single-supply applications
• Low noise performance with low offset voltage and gain error

Applications

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

Procurement Notes

Verify the 'T' suffix indicates tape and reel packaging configuration. Confirm the 'I' suffix corresponds to the industrial temperature range of -40°C to +85°C. Ensure the 'SL' suffix matches the 16-lead SOIC package type. Cross-reference the full part number against official Microchip documentation to validate all ordering suffixes before procurement.

Selection Notes

Select this component when multiple sensor signals require amplification and digitization within a single channel path. The integrated multiplexer reduces external switching hardware and microcontroller I/O pin usage. Verify that the required gain steps align with the available discrete values. Ensure the system power supply falls within the specified 2.5V to 5.5V operating range.

Part Context

This part belongs to the MCP6S2X family of single-ended, rail-to-rail, low-gain PGAs. The MCP6S28 specifically provides eight input channels, whereas other family members offer one, two, or six channels. All variants share similar electrical characteristics and SPI control interfaces but differ in pin count and package options based on channel density.

Replacement Considerations

Direct functional substitutes within the same family include MCP6S21, MCP6S22, and MCP6S26. These parts offer fewer input channels but maintain identical gain ranges and SPI compatibility. Verify package footprint differences if replacing across different channel counts.