MCP6S21-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip MCP6S21-I/P is a single-channel SPI programmable gain amplifier with rail-to-rail input and output swing. It supports software-selectable gain settings from 1 V/V to 32 V/V, enabling dynamic range adjustment for analog signal chains in an 8-pin PDIP package. Available worldwide for precision sensor signal conditioning applications.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6S21-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2812(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP6S21-I/P?
- Single-channel SPI-controlled programmable gain amplifier with rail-to-rail I/O
- Software-selectable gain from 1 V/V to 32 V/V in discrete steps via 3-wire SPI
- Rail-to-rail input and output for maximum signal swing at low supply voltages
- 2.5 V to 5.5 V supply voltage range compatible with 3.3 V and 5 V microcontroller systems
- 8-pin PDIP package for easy breadboard prototyping and through-hole assembly
What is MCP6S21-I/P used for?
The MCP6S21-I/P is used in data acquisition systems, weigh scales, and precision measurement instruments that require dynamic gain adjustment to accommodate sensors with widely varying output levels. Its SPI-programmable gain from 1 to 32 V/V allows a single ADC input to measure both low-level millivolt signals and full-range analog outputs without hardware gain-setting resistors. The 8-pin PDIP package makes it accessible for educational electronics projects and prototype analog front-end development.
What are the specifications of MCP6S21-I/P?
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| YTEOL | 8 |
| 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) | 1.35mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.5V |
| Supply Voltage-Nom (Vsup) | 4V |
| Surface Mount | NO |
| Temperature Grade | INDUSTRIAL |
| 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 |
Where can I find the MCP6S21-I/P datasheet?
MCP6S21-I/P Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP6S21-I/P?
Compatible alternatives and drop-in replacements for MCP6S21-I/P:
suggested
suggested
suggested
suggested
Frequently Asked Questions
What gain range does the MCP6S21-I/P support and how is the gain programmed in a microcontroller design?
The MCP6S21-I/P supports programmable gain from 1 V/V to 32 V/V in 8 discrete steps (1, 2, 4, 5, 8, 10, 16, 32), selected via a 3-wire SPI interface. A microcontroller sends an 8-bit command byte to the device to set the gain instantly, enabling real-time dynamic range adjustment without mechanical potentiometers or fixed resistor networks.
In a weigh scale application, how does the MCP6S21-I/P improve measurement accuracy across a 1 mV to 100 mV load cell output range?
By programming the MCP6S21-I/P to gain 32 V/V when the load cell output is near 1 mV, the amplified signal spans approximately 32 mV before ADC sampling, reducing quantization error. When the load cell output reaches 100 mV, gain is reduced to 1 V/V to prevent clipping. This adaptive gain strategy effectively extends ADC dynamic range by up to 30 dB in weigh scale and bridge sensor applications.
What supply voltage range does the MCP6S21-I/P accept, and can it interface directly with 3.3 V microcontrollers?
The MCP6S21-I/P operates from 2.5 V to 5.5 V supply voltage, covering both 3.3 V and 5 V microcontroller logic levels directly. The rail-to-rail input and output stages ensure full signal swing from near 0 V to near VDD, maximizing ADC utilization in both 3.3 V and 5 V single-supply systems without level-translation circuits.
For a designer choosing between the MCP6S21-I/P PDIP-8 and an SOIC-8 alternative, what are the tradeoffs in production assembly?
The PDIP-8 package with 2.54 mm through-hole pin pitch is simpler to hand-solder and socket during prototyping but occupies approximately 10 mm x 7 mm board area. An equivalent SOIC-8 reduces footprint to about 5 mm x 4 mm, enabling smaller PCBs in production. For low-volume or educational designs, PDIP-8 eliminates reflow oven requirements, while SOIC-8 is preferred for automated SMT production above 500 units.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2812 | $0.28 |
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