MCP3423-E/UN Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP3423-E/UN is an 18-bit delta-sigma ADC with 2 differential input channels and an I2C interface in an MSOP-10 package. It offers programmable gain amplification and a 2.048 V reference with linearity error below 0.004%. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- MCP3423-E/UN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.9000(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 MCP3423-E/UN?
- 18-bit resolution delta-sigma ADC with up to 3.75 SPS output rate for precision low-frequency signal acquisition
- Built-in 2.048 V precision reference and programmable gain amplifier (PGA) with 1x to 8x gain settings
- 2-channel differential I2C interface in compact MSOP-10 package supporting multi-device addressing up to 8 devices on a single bus
What is MCP3423-E/UN used for?
MCP3423-E/UN is ideal for precision measurement systems including weigh scales, pressure transmitters, and thermocouple signal conditioning where 18-bit resolution and low noise are essential. Its differential inputs and internal 2.048 V reference simplify sensor interface circuits in industrial data loggers, portable medical instruments, and environmental monitoring devices.
What are the specifications of MCP3423-E/UN?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-10 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Analog Input Voltage-Max | 2.048V |
| Analog Input Voltage-Min | -2.048 V |
| Converter Type | ADC, DELTA-SIGMA |
| JESD-30 Code | S-PDSO-G10 |
| JESD-609 Code | e3 |
| Linearity Error-Max (EL) | 0.0035% |
| Number of Analog In Channels | 2 |
| Number of Bits | 18 |
| Number of Functions | 1 |
| Output Bit Code | 2'S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP10,.19,20 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Sample Rate | 0.0024MHz |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.18mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| 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 | Thailand |
Where can I find the MCP3423-E/UN datasheet?
MCP3423-E/UN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP3423-E/UN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resolution and sampling rate does MCP3423-E/UN achieve and how does this affect precision measurement?
MCP3423-E/UN delivers 18-bit resolution at 3.75 SPS or 16-bit resolution at 15 SPS. At 18 bits the LSB size is approximately 15.6 µV with a 2.048 V reference, making it suitable for detecting microvolt-level changes in bridge-sensor and thermocouple circuits without external signal amplification.
How does the built-in PGA in MCP3423-E/UN improve small-signal acquisition?
The on-chip programmable gain amplifier supports gain settings of 1x, 2x, 4x, and 8x, allowing direct connection of low-output sensors like strain-gauge bridges producing signals as small as 256 µV full scale. This eliminates a discrete op-amp stage and reduces board area and offset error sources.
How many MCP3423 devices can share an I2C bus and what addresses are supported?
Up to 8 MCP3423 devices can share a single I2C bus using the 3 hardware address pins, giving addresses 0x68 through 0x6F. Each device operates from 2.7 V to 5.5 V supply and responds at up to 400 kHz fast-mode I2C, enabling dense multi-sensor acquisition on a 2-wire bus.
In which compact package does MCP3423-E/UN ship and what board footprint does it require?
MCP3423-E/UN comes in the MSOP-10 package, which measures 3.0 mm x 3.0 mm with 0.5 mm pin pitch, requiring less than 10 mm² of PCB area. This makes it suitable for space-constrained portable instruments, wearable sensor nodes, and modular industrial transmitters where board real estate is at a premium.
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