MCP4532-502E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4532-502E/MS is a single-channel I2C digital potentiometer with 128 steps and 5 kOhm end-to-end resistance featuring non-volatile EEPROM wiper memory in an MSOP-8 package. Provides 2 kHz bandwidth for signal conditioning. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4532-502E/MS 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
What are the key features of MCP4532-502E/MS?
- Single-channel 5 kOhm, 128-step digital potentiometer with non-volatile EEPROM wiper memory that retains position after power removal for factory calibration retention
- I2C 2-wire serial interface allows up to 8 MCP4532 devices on one bus using programmable address bits, minimizing MCU I/O pin usage
- 2 kHz small-signal bandwidth covers audio and low-frequency sensor conditioning applications including volume control and active filter tuning
- Wide 1.8 V to 5.5 V supply range with sub-1 µA standby current for battery-powered calibration, gain-setting, and offset-trimming circuits
- Compact MSOP-8 package with RoHS-compliant Pb-free construction in a 3 mm × 3 mm footprint for space-constrained portable and wearable designs
What is MCP4532-502E/MS used for?
The MCP4532-502E/MS is used in portable medical instruments, audio accessories, and industrial sensor modules where a 5 kOhm, 128-step I2C-controlled resistance with persistent wiper storage replaces a mechanical trimmer for gain setting or offset calibration. Its non-volatile memory ensures calibration constants survive power cycles without an MCU initialization routine, reducing firmware complexity in field-deployed equipment. The 1.8 V to 5.5 V supply range and 2-wire I2C interface also make it convenient for microcontroller designs that already use I2C for sensors and wish to avoid adding an SPI peripheral.
What are the specifications of MCP4532-502E/MS?
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 11Weeks |
| YTEOL | 9 |
| Additional Feature | THE RESISTOR ARRAY VALUES ARE 5000 OHM,10000 OHM, 50000 OHM |
| Bandwidth-Nom | 2kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5.5V |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.6mA |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 100000Ω |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Where can I find the MCP4532-502E/MS datasheet?
MCP4532-502E/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4532-502E/MS?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the non-volatile memory in the MCP4532-502E/MS differ from volatile digital potentiometers in a production calibration workflow?
The MCP4532-502E/MS stores the programmed wiper position in internal EEPROM rated for 100,000 write cycles and 40 years data retention, so the calibrated 5 kOhm resistance setting is preserved through power cycles without any MCU reload sequence. A volatile potentiometer like the MCP4132 resets to mid-scale (code 64, approximately 2.5 kOhm) on every power-up, requiring firmware to retransmit the calibration code over I2C each time. In production workflows the non-volatile version allows factory test equipment to program the trim once, verify, and then ship without loading calibration tables into embedded firmware.
What is the step resolution of the MCP4532-502E/MS and how many I2C devices can share one bus?
Each of the 128 steps corresponds to approximately 39 Ohm resistance change across the 5 kOhm end-to-end value, with a minimum wiper resistance of about 75 Ohm at step 0. The I2C interface supports up to 8 MCP4532 devices on a single 2-wire bus by combining a fixed device code with 2 hardware address pins (A0, A1), giving 4 unique addresses per resistor value variant. With a 400 kHz fast-mode I2C bus, the MCU can update all 8 devices' wiper positions in under 200 µs.
Can the MCP4532-502E/MS handle a 3.3 V I2C bus driven by a modern ARM Cortex-M microcontroller?
Yes. The device operates from 1.8 V to 5.5 V, and its I2C logic thresholds scale with VDD, so at 3.3 V the input high threshold is approximately 0.7 × 3.3 V = 2.31 V, well within the drive capability of standard 3.3 V GPIO pins. No level shifters are required between the microcontroller and the potentiometer. The 2-wire interface requires only SDA and SCL lines plus a single pull-up resistor (typically 4.7 kOhm to 10 kOhm) on each line shared among all I2C devices.
In what signal conditioning circuit would a 5 kOhm, 128-step potentiometer like the MCP4532-502E/MS be more appropriate than a 100 kOhm variant?
A 5 kOhm end-to-end resistance is preferred when the potentiometer must drive a low-impedance load such as an op-amp non-inverting input with a parallel bias resistor below 10 kOhm, or when it is used as the variable element in an RC time-constant network targeting cutoff frequencies above 1 kHz. For example, in a first-order RC low-pass filter with a 10 nF capacitor and a 5 kOhm potentiometer at mid-scale (2.5 kOhm), the cutoff frequency is approximately 6.4 kHz. With a 100 kOhm potentiometer the same capacitor would yield only 320 Hz cutoff, making the 5 kOhm variant necessary for audio-band filter tuning.
What package options are available for the MCP4532 family if PCB area is a critical constraint?
The MCP4532 is available in MSOP-8, which measures approximately 3 mm × 3 mm with a 0.65 mm pin pitch, making it suitable for dense portable PCB layouts. This is smaller than the SOIC-8 footprint at 3.9 mm × 4.9 mm used by some competing digital potentiometers. For the specific 5 kOhm resistance variant (suffix -502), the MSOP-8 package of the MCP4532-502E/MS offers the best combination of small footprint and full I2C non-volatile functionality without moving to a wafer-scale or QFN package.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8400 | $0.84 |
| 25+ | $0.7000 | $17.50 |
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