MCP3551-E/MS Microchip Integrated Circuit (Other) In Stock
The MCP3551-E/MS is a 22-bit delta-sigma ADC from Microchip featuring a differential input range of ±2.5 V, SPI-compatible serial interface, and a maximum conversion time of approximately 73.5 ms for high-resolution single-channel measurements. It is housed in a compact 8-pin MSOP package for space-constrained precision applications. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP3551-E/MS Datasheet PDF
- Category
- Integrated Circuit
- 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 with differential input range of ±2.5 V delivering ultra-high resolution for precision sensor digitization
- SPI-compatible serial interface enabling direct connection to microcontrollers and DSPs without external level shifters
- 8-pin MSOP package occupying minimal board area while providing full differential input flexibility for bridge and thermocouple sensors
Applications
The MCP3551-E/MS is ideal for precision measurement applications such as weigh scales, pressure transducers, and strain gauge bridges where 22-bit resolution eliminates the need for external signal conditioning amplifiers. Its ±2.5 V differential input range directly interfaces with Wheatstone bridge outputs and high-accuracy temperature sensors. Industrial data acquisition systems and scientific instruments benefit from its low-noise delta-sigma architecture and compact MSOP-8 footprint.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 12Weeks |
| 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 | S-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,.19 |
| Package Shape | SQUARE |
| 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 | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| ## MCP3551-E/MS Alternates Showing results | Image |
| Package | Other |
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 | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP3551-E/MS:
Frequently Asked Questions
What resolution and input range does the MCP3551-E/MS provide for precision measurement systems?
The MCP3551-E/MS delivers 22-bit resolution with a differential input range of ±2.5 V. This combination yields a theoretical LSB size of approximately 1.2 µV, making it suitable for digitizing small bridge sensor outputs without requiring a high-gain instrumentation amplifier stage in front of the converter.
How does the MCP3551-E/MS conversion time of ~73.5 ms affect throughput in data logging applications?
With a maximum conversion time of 73457.3 µs (roughly 13.6 conversions per second), the MCP3551-E/MS is optimized for high-accuracy low-speed measurements rather than high-throughput sampling. This rate is well suited for weighing systems, environmental monitoring, and laboratory instruments where measurement stability over 50–100 ms averages more signal than speed.
Which sensor types interface directly with the MCP3551-E/MS differential input without additional amplification?
Wheatstone bridge pressure sensors, load cells, and RTD divider networks typically produce differential outputs in the 10 mV to 100 mV range, which falls well within the ±2.5 V differential input span of the MCP3551-E/MS. At 22-bit resolution these low-level signals can be resolved to sub-10 µV accuracy, eliminating a discrete instrumentation amplifier and reducing BOM cost and board area.
How does the MSOP-8 package size of the MCP3551-E/MS compare to a DIP-8 alternative for compact instrument PCBs?
The MSOP-8 package measures approximately 3 mm × 3 mm with a 0.65 mm pitch, occupying roughly 9 mm² of board area, compared to a DIP-8's approximately 100 mm². This 10× footprint reduction enables multi-channel precision ADC arrays or dense sensor-node layouts on boards with fewer than 4 layers.
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