MCP3422A0-E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP3422A0-E/MS is a 2-channel, 18-bit delta-sigma ADC with I2C interface, programmable gain amplifier of 1x to 8x, and ±2.048 V differential input range. Achieves up to 18-bit resolution at 3.75 SPS in an 8-pin MSOP package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP3422A0-E/MS 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 MCP3422A0-E/MS?
- 18-bit resolution delta-sigma ADC with 0.0035% maximum linearity error for precision measurement applications
- Programmable gain amplifier (1x, 2x, 4x, 8x) enabling direct connection to low-level sensor outputs without external amplification
- I2C interface with multiple address options allowing up to 4 devices on a single 2-wire bus
- Single-supply operation from 2.7 V to 5.5 V in a compact 8-pin MSOP package for space-limited designs
What is MCP3422A0-E/MS used for?
The MCP3422A0-E/MS is suited for precision weigh scales, industrial process monitoring, and environmental sensors where 18-bit accuracy at low sample rates is more valuable than high-speed throughput. Its built-in PGA eliminates the need for external signal conditioning when reading bridge sensors, thermocouples, or strain gauges outputting millivolt-level signals. The I2C interface simplifies integration with low-power microcontrollers in battery-operated data loggers and scientific instrumentation.
What are the specifications of MCP3422A0-E/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 12Weeks |
| 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-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,.19 |
| Package Shape | SQUARE |
| 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 | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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 MCP3422A0-E/MS datasheet?
MCP3422A0-E/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP3422A0-E/MS?
Compatible alternatives and drop-in replacements for MCP3422A0-E/MS:
ADC, Delta-Sigma, 18-Bit, 1 Func, 2 Channel, Serial Access, PDSO8
Frequently Asked Questions
What resolution and sample rate trade-offs does the MCP3422A0-E/MS offer, and which setting suits a precision weigh scale?
The MCP3422A0-E/MS supports 12-bit at 240 SPS, 14-bit at 60 SPS, 16-bit at 15 SPS, and 18-bit at 3.75 SPS. A precision weigh scale that updates once or twice per second benefits most from the 18-bit mode, which delivers 0.0038 mV/LSB resolution with the ±2.048 V input range, far exceeding the accuracy of typical load-cell interfaces.
How does the on-chip PGA in MCP3422A0-E/MS help when reading a 10 mV full-scale bridge sensor?
With the PGA set to 8x gain, a 10 mV full-scale bridge output is amplified to 80 mV before digitization, utilizing more of the ±2.048 V ADC input range and improving effective signal-to-noise ratio by roughly 18 dB compared to unity gain. This eliminates the need for a discrete instrumentation amplifier, reducing BOM count by 4 to 6 components.
Can multiple MCP3422A0-E/MS devices share the same I2C bus, and how are they addressed?
Yes. The MCP3422A0 uses a fixed I2C address of 0x68 (7-bit), but up to 4 MCP3422 variants with different address pins (A0 through A3 suffixes) can coexist on one 2-wire bus at addresses 0x68 through 0x6B, providing 8 differential input channels total from a single I2C port with no additional multiplexer hardware.
What supply voltage range does MCP3422A0-E/MS accept, and can it operate directly from a 3.3 V microcontroller rail?
The MCP3422A0-E/MS operates from 2.7 V to 5.5 V, making it fully compatible with 3.3 V systems. At 3.3 V supply, the differential input range scales to ±2.048 V (internally referenced), the quiescent current is approximately 145 µA, and the I2C logic thresholds are compatible with both 3.3 V and 5 V GPIO without level shifters in most cases.
Related Guides
How to Choose the ICL7660ACPAZ or an Alternative: Charge-Pump Selection Guide
Choose the ICL7660ACPAZ or a compatible charge-pump alternative by comparing load, droop, ripple, package, and sourcing requirements.
Jul 26, 2026
150141VS73100 Violet SMD LED Indicator Design Guide
Design the 150141VS73100 violet 3528 SMD LED for reliable indication with current, thermal, optical, PCB, PWM, and sourcing guidance.
Jul 26, 2026
LM5156QDSSRQ1 Automotive Boost Controller Design Guide
Practical LM5156QDSSRQ1 automotive boost design guidance covering operating points, magnetics, MOSFET stress, compensation, layout, and validation.
Jul 24, 2026
EEEFK1H470XP Selection Guide: Choosing a 50 V SMD Aluminum Capacitor
Choose EEEFK1H470XP and related 50 V SMD aluminum capacitors by capacitance, ripple current, ESR, life, and layout constraints.
Jul 24, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.7902 | $2.79 |
| 1000+ | $2.7800 | $2780.00 |
| 5000+ | $2.7400 | $13700.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit