MCP6S22-I/P

Overview

The MCP6S22-I/P is a dual-channel analog Programmable Gain Amplifier (PGA) from Microchip Technology, housed in an 8-pin PDIP package. It supports gains ranging from +1 V/V to +32 V/V via SPI control and features rail-to-rail input and output capabilities. The device operates on a single supply voltage between 2.5V and 5.5V with a typical quiescent current of 1.0 mA. It includes a shutdown mode for power conservation and is specified for operation across temperatures from -40°C to +85°C.

Feature Summary

• Dual-channel multiplexed inputs selectable via Serial Peripheral Interface
• Rail-to-rail input and output capability for single-supply applications
• Configurable gain settings from +1 V/V to +32 V/V
• Low offset voltage and low noise characteristics optimized for precision

Applications

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

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the MCP6S22 family is available in multiple configurations including SOIC and MSOP. Confirm that the industrial temperature range (-40°C to +85°C) aligns with your environmental requirements. Ensure the single-supply voltage range of 2.5V to 5.5V is compatible with your system design before procurement.

Selection Notes

Select this component when a dual-channel PGA with SPI programmability is required. It is suitable for applications needing flexible gain adjustment and rail-to-rail performance. Consider the MCP6S21 for single-channel needs or the MCP6S26/28 for higher channel counts. Verify that the internal VREF connection to VSS meets your reference voltage requirements.

Part Context

This part belongs to the MCP6S21/2/6/8 family of single-ended, rail-to-rail, low-gain error Programmable Gain Amplifiers. These devices are designed for high-speed, low-offset applications requiring flexible performance or multiple inputs. The family shares common architecture but varies in channel count and package options to suit different integration densities.

Replacement Considerations

Direct substitutes within the same family include the MCP6S21 (single channel), MCP6S26 (six channels), and MCP6S28 (eight channels). Cross-family replacements should be evaluated based on channel count, gain range, and interface compatibility.

FAQ

How is the VREF pin handled in the MCP6S22?

In the MCP6S22, the VREF pin is tied internally to VSS. This configuration means the Power Supply Rejection Ratio specification describes PSRR+ only.

What is the recommended grounding practice for the MCP6S22?

It is recommended to tie the VSS pin directly to ground to avoid noise problems, given the internal connection of VREF to VSS.