MCP4342-103E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP4342-103E/ST is a quad-channel 7-bit digital potentiometer with 10 kΩ end-to-end resistance and SPI control interface. Integrates 4 independent wiper channels with 128 positions each in a TSSOP-14 package. Suitable for multichannel gain control, calibration, and programmable analog circuit trimming applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4342-103E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3500(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 MCP4342-103E/ST?
- Quad-channel (4 wipers) 7-bit digital potentiometer in a single IC
- 10 kΩ end-to-end resistance with 128 wiper positions per channel
- 3-wire SPI serial interface for fast microcontroller integration
- 1 kHz nominal bandwidth per channel
- Non-volatile wiper position memory for power-cycle retention
- RoHS-compliant TSSOP-14 package for space-efficient PCB designs
What is MCP4342-103E/ST used for?
The MCP4342-103E/ST enables four independent analog adjustments from a single SPI bus transaction, making it ideal for multichannel audio processing boards where per-channel volume, bass, and treble controls must be software-programmable. In industrial calibration systems, all 4 channels can trim separate sensor signal paths simultaneously, reducing calibration time and board complexity versus discrete single-channel potentiometers. The device is also used in programmable power supply feedback networks and sensor bridge balancing circuits where multiple resistor values must track a common control word.
What are the specifications of MCP4342-103E/ST?
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 1kHz |
| Control Interface | 3-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 4 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| 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 | 2.7V |
| 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 | 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 | Malaysia, Philippines, Thailand |
Where can I find the MCP4342-103E/ST datasheet?
MCP4342-103E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4342-103E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does having 4 wiper channels in the MCP4342-103E/ST reduce component count versus discrete single-channel potentiometers?
A single MCP4342-103E/ST replaces four individual MCP4131 single-channel devices, cutting component count from 4 ICs and 4 decoupling capacitors to 1 IC, while also reducing PCB footprint from approximately 4 × MSOP-8 area to a single TSSOP-14 outline. All 4 channels share a common 3-wire SPI bus, further eliminating the per-chip chip-select routing overhead found in discrete implementations.
What is the wiper step resolution of the MCP4342-103E/ST across its 10 kΩ range, and is that sufficient for precision trimming?
Each of the 4 channels provides 128 steps across a 10 kΩ end-to-end resistance, yielding approximately 78 Ω per step. For coarse calibration of sensor offsets with ±1% tolerance requirements, this resolution is adequate; for tighter ±0.1% trimming, a higher-resolution 8-bit variant or a two-stage R-2R ladder approach is recommended alongside the 1 kHz bandwidth limitation.
Does the MCP4342-103E/ST retain wiper positions after a power cycle, and how does that affect firmware complexity in an embedded system?
Yes, the MCP4342-103E/ST stores wiper positions in internal non-volatile memory, so the 4 channels resume their last programmed resistance values at power-up without any firmware intervention. This eliminates the need to re-send SPI calibration commands on every boot, reducing startup latency by up to several milliseconds and simplifying firmware state-machine design in battery-powered or frequently power-cycled instruments.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $1.6500 | $1.65 |
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