MCP4132-103E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4132-103E/SN is a single-channel digital potentiometer from Microchip Technology with 128 wiper positions and 10 kΩ end-to-end resistance. It is controlled via an SPI increment/decrement interface and housed in a standard 8-pin SOIC package. Lead-free and widely available for volume production in gain control, offset adjustment, and programmable analog circuits.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4132-103E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5660(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 128-step 10 kΩ digital potentiometer controlled via SPI increment/decrement commands, ideal for simple one-axis analog tuning without complex software overhead
- Non-volatile memory stores wiper position through power cycles, allowing factory-programmed resistance values to persist without microcontroller re-initialization
- 8-pin SOIC package with 3.9 mm body enables straightforward PCB integration on standard 1.27 mm pitch footprints suitable for automated assembly
Applications
The MCP4132-103E/SN is used in consumer and industrial electronics requiring software-adjustable resistance for volume control, brightness adjustment, or programmable sensor bias without manual trimmer pots. Its SPI increment/decrement interface makes it a natural replacement for mechanical potentiometers in applications where remote or automated calibration is needed. Portable measurement instruments and audio equipment also use it to store calibration offsets in its non-volatile memory so the correct resistance is restored each time the system powers up.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5V |
| Supply Current-Max | 1mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Total Resistance-Nom | 10000Ω |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Mainland China, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What end-to-end resistance does MCP4132-103E/SN provide, and how fine is each wiper step for precision trimming?
The MCP4132-103E/SN offers a 10 kΩ end-to-end resistance divided into 128 equal steps, giving approximately 78 Ω per step. This granularity enables about 0.78 % resistance resolution per LSB, sufficient for precise gain trimming in instrumentation amplifier feedback networks or fine-tuning sensor signal conditioning circuits operating in the millivolt range.
How does the SPI increment/decrement interface of MCP4132-103E/SN differ from address-based SPI pots, and when is it the better choice?
The MCP4132-103E/SN uses up-down increment commands over SPI rather than direct wiper address writes, which simplifies firmware to a single UP or DOWN pulse per step. This interface style is preferred when wiper position changes one step at a time in real-time user-controlled applications such as manual volume knobs decoded by a rotary encoder, where each encoder pulse maps directly to one SPI increment without any position-tracking arithmetic in the MCU.
Can MCP4132-103E/SN retain its wiper setting after power loss, making it suitable for set-and-forget calibration?
Yes, the MCP4132-103E/SN includes built-in non-volatile memory so the wiper position is automatically saved and restored across power cycles. In a battery-powered sensor node calibrated at the factory, the trimmed 10 kΩ resistance value is written once to non-volatile memory and remains active indefinitely without any SPI traffic at startup, saving approximately 1 ms of initialization time and eliminating the need for an external EEPROM to store calibration data.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8400 | $0.84 |
| 25+ | $0.7000 | $17.50 |
| 100+ | $0.6400 | $64.00 |
| 1000+ | $0.6100 | $610.00 |
| 7500+ | $0.5680 | $4260.00 |
| 10000+ | $0.5660 | $5660.00 |
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