MCP3551-E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP3551-E/SN is a 22-bit single-channel delta-sigma ADC from Microchip Technology with 15 samples per second output rate and built-in 50/60 Hz rejection in an 8-pin SOIC package. It accepts differential analog inputs up to ±2.5 V and provides high resolution for precision measurement applications. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP3551-E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.8184(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
- 22-bit delta-sigma ADC resolution enabling sub-microvolt measurement accuracy for precision sensor readout
- Built-in 50/60 Hz rejection filter eliminates power-line interference without external filtering components
- Single-channel ±2.5 V differential input with SPI-compatible interface in a compact 8-pin SOIC package
Applications
The MCP3551-E/SN is designed for precision measurement applications including weigh scales, industrial pressure sensors, and thermocouple digitizers where 22-bit resolution at 15 samples per second is sufficient. Its integrated 50/60 Hz rejection simplifies designs in electrically noisy industrial environments, removing the need for external notch filters. The small 8-pin SOIC footprint allows it to be placed close to the sensor in data acquisition modules and portable instruments.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Analog Input Voltage-Max | 2.5V |
| Analog Input Voltage-Min | -2.5 V |
| Conversion Time-Max | 73457.3 µs |
| Converter Type | ADC, DELTA-SIGMA |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Linearity Error-Max (EL) | 0.0006% |
| Number of Analog In Channels | 1 |
| Number of Bits | 22 |
| Number of Functions | 1 |
| Output Bit Code | 2'S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.02816MHz |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.17mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| 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 resolution and sampling rate does the MCP3551-E/SN provide, and which measurement applications benefit most from these specs?
The MCP3551-E/SN delivers 22-bit effective resolution at a maximum output data rate of 15 samples per second (maximum conversion time approximately 73,457 µs). This combination is ideal for weigh scales, bridge sensor readout, and precision temperature measurement where very low noise and high accuracy are more critical than high-speed sampling.
How does the MCP3551-E/SN's integrated 50/60 Hz rejection simplify industrial sensor designs?
The MCP3551-E/SN includes a digital filter designed to reject 50 Hz and 60 Hz mains-frequency interference, which is the dominant noise source in industrial sensor cables. By placing this rejection inside the ADC, the designer can eliminate external LC notch filters or complex active anti-aliasing stages, reducing BOM count and PCB complexity while maintaining better than 100 dB rejection of 50/60 Hz signals.
What differential input voltage range does the MCP3551-E/SN accept, and how should a designer match it to a Wheatstone bridge output?
The MCP3551-E/SN accepts differential analog inputs from -2.5 V to +2.5 V, giving a 5 V full-scale differential range. A Wheatstone bridge excited at 5 V typically produces a differential output of a few millivolts at full scale, so an instrumentation amplifier with a gain of 100–500 is normally used to amplify the bridge output to the 1–2.5 V range before driving the MCP3551, making full use of its 22-bit dynamic range.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.8184 | $2.82 |
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