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.
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| 1+ | $2.7902 | $2.79 |
| 1000+ | $2.7800 | $2780.00 |
| 5000+ | $2.7400 | $13700.00 |
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