MCP6S91-E/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The MCP6S91-E/P is a single-channel SPI-programmable gain amplifier (PGA) from Microchip featuring rail-to-rail input and output swings for maximum dynamic range. It supports selectable gains from 1 V/V to 32 V/V via an SPI interface and operates from a 2.5 V to 5.5 V supply. Available in an 8-pin PDIP package with RoHS-compliant e3 finish and broad global distribution.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6S91-E/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.9500(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-channel SPI-programmable gain amplifier with selectable gains of 1, 2, 4, 5, 8, 10, 16, and 32 V/V
- Rail-to-rail input and output for maximum signal dynamic range on 2.5 V to 5.5 V supplies
- SPI digital gain control eliminates manual resistor networks and enables software-driven calibration
- 8-pin PDIP package for easy breadboard prototyping and hand-soldering in lab and educational settings
Applications
The MCP6S91-E/P suits data acquisition systems where sensor output levels vary widely and a microcontroller must automatically adjust amplifier gain via SPI to keep ADC inputs within range. Its rail-to-rail topology and 2.5 V to 5.5 V supply compatibility make it effective alongside 12-bit or 16-bit ADCs in industrial measurement instruments and portable medical devices. The programmable gain from 1 V/V to 32 V/V also fits audio level control, strain gauge signal conditioning, and precision weigh scale front-ends.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Analog IC - Other Type | ANALOG CIRCUIT |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 1.6mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What gain settings are available on the MCP6S91-E/P and how are they selected?
The MCP6S91-E/P offers 8 discrete gain settings: 1, 2, 4, 5, 8, 10, 16, and 32 V/V, all selectable by writing a 3-bit gain code over the SPI interface. The SPI clock can operate up to 10 MHz, allowing gain switching in under 1 µs. This software-controlled gain selection eliminates discrete resistor networks and enables in-circuit calibration without hardware changes.
What supply voltage range does the MCP6S91-E/P support and how does rail-to-rail performance benefit measurement accuracy?
The MCP6S91-E/P operates from a 2.5 V to 5.5 V single supply. Its rail-to-rail input and output allows the signal to swing within a few millivolts of both supply rails, maximizing the usable voltage range for a downstream ADC. At a 3.3 V supply, this provides approximately 3.29 V of usable output swing, which reduces range loss and improves effective number of bits (ENOB) compared to non-rail-to-rail amplifiers.
How does the MCP6S91-E/P compare to a fixed-gain instrumentation amplifier for sensor interface designs?
A fixed-gain instrumentation amplifier requires resistor changes or multiple discrete components to support different gain levels, while the MCP6S91-E/P achieves gain switching by sending a 3-bit SPI command in under 1 µs. This programmability is advantageous in multi-sensor acquisition systems where sensor sensitivity varies across channels; a single MCP6S91-E/P with a 32 V/V maximum gain can accommodate sensor full-scale outputs ranging from 100 mV to 3.2 V without board modification.
What package does the MCP6S91-E/P use and when is it most appropriate to choose it over an SMD package?
The MCP6S91-E/P is packaged in an 8-pin PDIP with 2.54 mm pin pitch and approximately 9.27 mm body length. This through-hole package inserts directly into a standard breadboard or DIP socket, making it ideal for rapid prototyping, laboratory evaluation, and low-volume production where hand assembly is preferred. For high-volume PCB production, the equivalent SOIC-8 variant offers a smaller 4.9 mm × 3.9 mm footprint.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.3000 | $1.30 |
| 5+ | $1.1900 | $5.95 |
| 25+ | $1.1600 | $29.00 |
| 100+ | $0.9900 | $99.00 |
| 1000+ | $0.9600 | $960.00 |
| 5000+ | $0.9500 | $4750.00 |
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