MCP3427-E/MF - 16-Bit Dual-Channel Sigma-Delta ADC | Microchip
MPN: MCP3427-E/MF ✓ فعالMCP3427-E/MF نمای کلی
The MCP3427-E/MF supports input measurement from small differential signals through an internal programmable-gain amplifier. Its differential input architecture helps reject common-mode noise when the measured source is referenced to a local ground or paired sensor output. The two input channels can be configured for single-ended or differential operation, allowing the converter to serve multiple analog front-end arrangements without changing the device package.
Key features include up to 16-bit resolution, a 2.048 V internal reference, self-calibration of internal offset and gain for each conversion, and a serial I2C interface suitable for embedded measurement systems. The manufacturer describes the converter as a low-noise, high-accuracy delta-sigma ADC for precision data acquisition. The MCP3427-E/MF is supplied in a compact 10-VFDFN exposed-pad package, making it appropriate for space-constrained industrial, instrumentation, and sensor-interface designs.
Delta-sigma conversion is especially useful when high resolution and noise rejection are more important than instantaneous conversion rate. The MCP3427 family is intended for measurements that can be filtered digitally after acquisition, such as temperature, pressure, load-cell, bridge, and slow process-control signals. The internal reference helps establish a stable conversion baseline, while the I2C interface allows a microcontroller or embedded controller to retrieve measurements without using a parallel data bus.
The MCP3427-E/MF is not a high-speed waveform ADC. Its conversion rate and digital filter behavior should be considered when the application requires rapid sampling, low-latency control, or wide-band signal capture. For those requirements, a higher-bandwidth successive-approximation or pipeline converter would generally be a better architectural fit. For slow precision measurements, however, the MCP3427-E/MF provides a compact combination of resolution, differential inputs, programmable gain, and serial connectivity.
Designers should pay attention to input common-mode voltage, analog noise filtering, reference stability, I2C address configuration, and decoupling around the exposed pad. The input network should limit high-frequency interference before it reaches the converter, while the digital interface should use suitable pull-up resistors and signal-integrity practices. This product page synthesizes the verified manufacturer and distributor information, package details, purchasing links, and engineering guidance for the MCP3427-E/MF.
جایگزین‌های drop-in برای MCP3427-E/MF — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
MCP3427T-E/MF
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MCP3427-E/SL
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MCP3427-E/MF حداکثر مقادیر مجاز و مشخصات الکتریکی
| ADC Type | Sigma-delta |
| رزولوشن | 16 bit |
| Number of Channels | 2 |
| Input Configuration | Differential inputs |
| Internal Reference Voltage | 2.048 V |
| Differential Input Range | +/-2.048 V |
| Conversion Rate | 15 samples per second |
| Digital Interface | I2C serial interface |
| Programmable Gain | 1, 2, 4, 8, 16, 32, 64, or 128x |
| Self-Calibration | Internal offset and gain calibration per conversion |
| بسته‌بندی | 10-VFDFN exposed pad, 3 mm x 3 mm |
| نوع نصب | Surface mount |
| دمای کاری | -40°C to +125°C |
| Packaging | Tube |
راهنمای پیکربندی پین MCP3427-E/MF 10-vfdfn exposed pad, 3 mm x 3 mm
پیکربندی پین برای MCP3427-E/MF (پکیج 10-vfdfn exposed pad, 3 mm x 3 mm). این قطعه آنالوگ دارای پین‌های ورودی، خروجی و تغذیه است. برای پیکربندی‌های پین offset null، جبران‌سازی و فعال‌سازی به دیتاشیت سازنده مراجعه کنید. ایده‌آل برای مدارهای شرطی‌سازی سیگنال و تقویت‌کننده.
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کاربردهای معمول
MCP3427-E/MF مناسب است برای 6 کاربردs: Industrial Process Measurement, Temperature Sensing, Load-Cell and Bridge Measurement, Portable Environmental Monitoring, Instrumentation and Test Equipment, Battery-Powered Sensor Node.
Industrial Process Measurement
The MCP3427-E/MF fits slow industrial process monitoring where a 4-20 mA, resistive, or conditioned sensor signal must be digitized on a compact controller. Its two differential channels allow two sensor inputs to be referenced locally, while the programmable gain increases sensitivity for low-level signals. The 16-bit resolution and 15 sps listed conversion rate suit filtered temperature, pressure, and level measurements where fast waveform capture is not required. Designers should add input protection, anti-alias filtering, and stable excitation or reference circuitry.
پیشنهادی
Temperature Sensing
The MCP3427-E/MF is suitable for precision temperature sensing when the sensor produces a small differential voltage. Its differential input structure can help reject common-mode disturbance, and the programmable gain allows a weak sensor output to use more of the ADC range. The internal 2.048 V reference provides a defined measurement baseline, while the I2C output supports periodic readings from a microcontroller. For thermocouple or RTD designs, the front end still needs appropriate cold-junction compensation, excitation, linearity, and overvoltage protection.
پیشنهادی
Load-Cell and Bridge Measurement
The MCP3427-E/MF can serve as the conversion stage for a resistive bridge or load-cell front end when the excitation and signal levels are carefully designed. Two differential channels allow paired bridge or sensor signals to be measured without sharing a noisy high-impedance reference. The programmable gain improves use of the converter’s input range, and the 16-bit nominal resolution supports fine measurement resolution after noise filtering. Practical designs should use low-noise excitation, input filtering, shield-aware routing, and calibration of offset and gain.
پیشنهادی
Portable Environmental Monitoring
The MCP3427-E/MF is appropriate for compact environmental monitoring products that measure multiple slow analog sensor channels and communicate results through a serial bus. The 3 mm x 3 mm DFN package preserves board area, and the two differential inputs are useful for paired sensing or referenced measurements. Its nominal 16-bit resolution can improve visibility into gradual temperature, humidity, or gas-sensor changes. The converter is not optimized for high-bandwidth transient capture, so applications should include suitable filtering and account for the 15 sps listed conversion rate.
پیشنهادی
Instrumentation and Test Equipment
The MCP3427-E/MF can be used in instrumentation modules requiring two high-resolution differential measurements without a wide parallel data bus. Its I2C interface reduces wiring and can connect to a measurement controller, while the programmable gain accommodates different sensor sensitivities. The internal reference simplifies standalone measurement modules, although precision instruments may require an external low-drift reference if the application demands better long-term stability. The 15 sps rate is most appropriate for static or slowly changing quantities rather than high-speed signal analysis.
پیشنهادی
Battery-Powered Sensor Node
The MCP3427-E/MF can serve as the analog measurement section of a battery-powered sensor node because it combines two differential inputs, programmable gain, and a serial interface in a compact package. The converter supports low-bandwidth measurements that align with duty-cycled environmental or condition monitoring. Power budgeting should compare the 15 sps conversion rate, digital filter settling, I2C activity, and regulator quiescent current. The exposed pad must be connected to the required ground and thermal copper according to the manufacturer package guidance.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MCP3427-E/MF — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MCP3427T-E/MF | MCP3427-E/SL |
|---|---|---|---|
| Package | 10-VFDFN exposed pad, 3 mm x 3 mm | 10-VFDFN exposed pad, 3 mm x 3 mm | 10-VFDFN exposed pad, 3 mm x 3 mm |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Resolution | 16 bit | 16 bit | 16 bit |
| Number of Channels | 2 | 2 | 2 |
| ADC Architecture | Sigma-delta | Sigma-delta | Sigma-delta |
| Internal Reference | 2.048 V | 2.048 V | 2.048 V |
| Interface | I2C | I2C | I2C |
| Differential Input Range | +/-2.048 V | +/-2.048 V | +/-2.048 V |
تفاوت‌های کلیدی
- Two differential inputs in a compact package (در مقابلMCP3427-E/SL)
- Documented internal precision reference (در مقابلMCP3427T-E/MF)
- Programmable gain for low-level analog signals (در مقابلMCP3427T-E/MF)
یادداشت‌های طراحی
Route the MCP3427-E/MF analog inputs away from I2C switching traces, clock lines, and switching-regulator power paths. Keep the analog input traces short and place input filtering close to the ADC pins. The 10-VFDFN exposed pad must be connected to the specified ground plane and thermal copper according to the manufacturer package drawing; an unconnected or poorly connected exposed pad can affect thermal performance and signal integrity.
Do not treat the nominal 16-bit resolution as guaranteed effective accuracy without considering noise, reference error, gain error, input common-mode range, and the digital filter. The listed 15 sps conversion rate is suitable for slow measurements, not high-speed waveforms. Verify the complete pinout, supply limits, I2C address behavior, and conversion timing from the official Microchip datasheet before releasing a PCB or firmware.
Use appropriate pull-up resistors on the I2C bus and keep the bus routing short where possible. For differential sensor inputs, use matched, symmetric routing and return paths to minimize conversion of common-mode noise into differential error. If the source is a high-impedance sensor, add suitable biasing and protection components while checking their leakage, capacitance, and noise contribution against the required accuracy.
اطلاعات انطباق
The supplied verified excerpts identify the manufacturer, electrical function, package, temperature range, and ordering information but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
