MCP3428-E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP3428 is a 16-bit delta-sigma ADC with 4 differential input channels, programmable gain amplifier up to 8x, and I2C interface. Available in TSSOP-14 package, RoHS compliant, in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP3428-E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.4200(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16-bit delta-sigma ADC with 4 differential input channels for high-resolution sensor measurement over I2C
- Onboard programmable gain amplifier (PGA) with 1x, 2x, 4x, and 8x gain settings enabling direct connection of low-level bridge and thermocouple signals
- Selectable sample rates of 15 SPS, 60 SPS, or 240 SPS allowing trade-off between resolution and conversion speed in data logging applications
Applications
The MCP3428 is designed for precision measurement applications such as weigh scales, pressure sensors, and temperature monitoring systems where 16-bit resolution and a differential input architecture reject common-mode noise from bridge transducers. Its I2C interface with address selection pins allows up to eight MCP3428 devices on a single two-wire bus, supporting multi-channel industrial data acquisition without additional multiplexers. The onboard PGA eliminates the need for external signal conditioning amplifiers before the ADC, reducing BOM cost and PCB area in portable medical instruments and environmental monitors.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| 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-G14 |
| JESD-609 Code | e3 |
| Number of Analog In Channels | 4 |
| Number of Bits | 16 |
| Number of Functions | 1 |
| Output Bit Code | 2'S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.024MHz |
| 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 | Malaysia, Philippines, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What resolution and sample rate options does the MCP3428 provide, and how do they trade off?
The MCP3428 offers 16-bit resolution at 15 SPS, 14-bit at 60 SPS, and 12-bit at 240 SPS. Higher resolution at 15 SPS suits slow-moving signals like temperature and weight, while 240 SPS at 12-bit resolution serves faster data logging or multiplexed channel scanning scenarios where conversion speed matters more than noise-free bits.
How does the integrated PGA in the MCP3428 simplify thermocouple and bridge sensor designs?
The MCP3428 includes a programmable gain amplifier with selectable 1x, 2x, 4x, and 8x gain that boosts millivolt-level thermocouple or Wheatstone bridge signals directly to the ADC input range of ±2.048 V, eliminating a discrete instrumentation amplifier stage and reducing BOM by 3 to 5 components in precision weighing and pressure measurement systems.
How many MCP3428 devices can share a single I2C bus in a multi-channel acquisition system?
The MCP3428 supports up to 8 unique I2C addresses using the Adr0 and Adr1 address pins, allowing 8 devices with 4 differential channels each on a single 2-wire I2C bus, providing 32 differential measurement channels without any additional address decoders or analog multiplexers in industrial data acquisition systems.
What is the input voltage range of the MCP3428, and is an external reference required?
The MCP3428 accepts differential input voltages from -2.048 V to +2.048 V and uses an integrated 2.048 V internal voltage reference, so no external reference IC is needed. This internal reference provides a typical drift of 15 ppm/°C, sufficient for environmental sensors and weigh scales operating across the -40°C to 85°C industrial temperature range.
For a low-power environmental monitoring node, how does the MCP3428-E/ST compare to discrete ADC plus amplifier solutions?
The MCP3428-E/ST integrates the ADC, PGA, and voltage reference in a single TSSOP-14 package measuring 5 mm x 4.4 mm, consuming typically 300 µA during continuous conversion versus 1 mA to 2 mA for a discrete 16-bit ADC plus instrumentation amplifier combination, making it a compact and power-efficient choice for battery-operated air quality or soil moisture monitoring nodes.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.4906 | $3.49 |
| 1000+ | $3.4600 | $3460.00 |
| 5000+ | $3.4200 | $17100.00 |
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