MCP3422A1-E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP3422A1-E/SN is a 2-channel, 18-bit delta-sigma ADC from Microchip Technology with an I2C interface and on-chip reference. It supports differential inputs up to ±2.048 V, programmable gain of 1x to 8x, and data rates from 3.75 SPS to 240 SPS, housed in an 8-pin SOIC package.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP3422A1-E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7400(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 MCP3422A1-E/SN?
- 18-bit delta-sigma ADC with up to 0.0035% linearity error for high-accuracy measurements
- Differential input voltage range: ±2.048 V with programmable gain amplifier (1x, 2x, 4x, 8x)
- I2C interface supporting multiple devices on a single 2-wire bus
- Selectable data rates: 3.75 SPS (18-bit) to 240 SPS (12-bit) for noise vs. speed tradeoff
- On-chip 2.048 V voltage reference for simplified design
- 8-pin SOIC package in RoHS-compliant (e3) lead-free construction
What is MCP3422A1-E/SN used for?
The MCP3422A1-E/SN is commonly used in precision measurement applications such as industrial weigh scales, pressure transducer readout, and temperature sensing with RTDs or thermocouples. Its high 18-bit resolution and low linearity error make it ideal for medical diagnostic equipment and scientific instruments requiring accurate differential signal acquisition. The I2C interface and compact SOIC-8 package simplify integration into embedded system designs with limited I/O.
What are the specifications of MCP3422A1-E/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Analog Input Voltage-Max | 2.048V |
| Analog Input Voltage-Min | -2.048 V |
| Converter Type | ADC, DELTA-SIGMA |
| JESD-30 Code | R-PDSO-G8 |
| 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 | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| ## MCP3422A1-E/SN Alternates Showing results | Image |
| 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 MCP3422A1-E/SN datasheet?
MCP3422A1-E/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP3422A1-E/SN?
Compatible alternatives and drop-in replacements for MCP3422A1-E/SN:
suggested
suggested
ADC, Delta-Sigma, 18-Bit, 1 Func, 2 Channel, Serial Access, PDSO8
ADC, Delta-Sigma, 18-Bit, 1 Func, 2 Channel, Serial Access, PDSO8
Frequently Asked Questions
What resolution and data rate tradeoff does MCP3422A1-E/SN offer for precision industrial measurements?
MCP3422A1-E/SN provides selectable resolution and data rate combinations: 18-bit at 3.75 SPS, 16-bit at 15 SPS, 14-bit at 60 SPS, and 12-bit at 240 SPS. This allows designers to choose between maximum accuracy for slow-changing signals like temperature or higher throughput for faster measurements, all within a single 8-pin SOIC device.
How does the on-chip 2.048 V reference in MCP3422A1-E/SN simplify differential sensor interface design?
The integrated 2.048 V precision voltage reference eliminates the need for an external reference component, reducing BOM cost and board space. Combined with a differential input range of ±2.048 V and a programmable gain amplifier with gains up to 8x, the MCP3422A1-E/SN can directly interface low-level sensor outputs such as Wheatstone bridge voltages without additional signal conditioning.
When sourcing MCP3422A1-E/SN, what are the lead time expectations and are there alternate Microchip ADC parts with similar pinouts?
The MCP3422A1-E/SN has a factory lead time of approximately 6 weeks from Microchip Technology and is available through major distributors. For similar applications, MCP3423 (3-channel) and MCP3424 (4-channel) share the same I2C interface and 18-bit delta-sigma architecture, offering pin-compatible upgrade paths when more input channels are needed without redesigning the PCB footprint.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.7200 | $3.72 |
| 25+ | $3.4000 | $85.00 |
| 50+ | $3.2600 | $163.00 |
| 100+ | $2.8400 | $284.00 |
| 800+ | $2.7955 | $2236.40 |
| 1000+ | $2.7400 | $2740.00 |
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