MCP3428T-E/SL - 16-Bit 4-Channel Delta-Sigma ADC | Microchip
MPN: MCP3428T-E/SL ✓ AktifMCP3428T-E/SL Ringkasan
A delta-sigma ADC is a mixed-signal data converter that uses oversampling and digital filtering to provide high resolution and low noise in narrow-bandwidth measurements. The MCP3428 belongs to the ADC and DAC > Analog-to-digital converter product hierarchy and is suited to precision acquisition systems rather than high-speed waveform capture. Its conversion architecture prioritizes accurate, stable readings from slowly changing or low-frequency sensor signals.
The MCP3428 provides four differential input channels, 16-bit resolution, a 2.048 V precision internal reference, and a specified conversion rate of 15 SPS. Differential inputs reject common-mode noise when paired with suitable sensor bridges or instrumentation amplifiers. The integrated reference reduces external component count, while the I2C interface allows the converter to share a two-wire bus with sensors, EEPROM, and other compatible peripherals.
The -E/SL ordering option is associated with the automotive-grade AEC-Q100 qualification indicated in the product documentation and uses a 14-pin SOIC package. Tape-and-reel packaging supports automated production and pick-and-place assembly. The SOIC body is listed at 3.90 mm width, and the gull-wing terminal form is compatible with conventional surface-mount assembly and board-level inspection processes.
Typical uses include industrial pressure and temperature acquisition, bridge-sensor measurement, laboratory instrumentation, battery monitoring, and embedded environmental sensing. Differential channel pairing is particularly useful when the measured quantity is represented by a small voltage difference riding on a larger common-mode voltage. Firmware must configure the input channel, gain, resolution, and conversion timing through the device's serial register interface.
Designers should allow the digital filter and continuous-conversion settling behavior to determine the valid sampling interval. Input filtering, reference bypassing, grounding, and I2C pull-up placement are as important as ADC resolution because they determine whether system-level accuracy approaches the converter's intrinsic performance.
This page combines manufacturer specifications, application guidance, drop-in family comparisons, and practical design considerations to support component selection, schematic planning, PCB layout, and sourcing decisions for the MCP3428T-E/SL.
Alternatif penggantian untuk MCP3428T-E/SL — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian MCP3428T-E/SL (sama faktor bentuk dan footprint) — berbeda di dalam Differential Input Range, Package, Resolution.
MCP3428-E/SL
✅ Drop-InKontak untuk harga
Lihat Datasheet →MCP3425-I/SL
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MCP3427-I/SL
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MCP3424-I/SL
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MCP3423-I/SL
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
MCP3428T-E/SL Rating Maksimal & Karakteristik Listrik
| ADC Type | Delta-sigma analog-to-digital converter |
| Resolusi | 16 bit |
| Number of Input Channels | 4 channels |
| Input Configuration | Differential |
| Laju Pengambilan Sampel | 15 SPS |
| Internal Reference Voltage | 2.048 V |
| Differential Input Range | -2.048 V to +2.048 V |
| Digital Interface | I2C serial, 2-wire |
| Paket | 14-SOIC |
| Jumlah Pin | 14 pins |
| Package Width | 3.90 mm |
| Package Body Width | 0.154 inch |
| Terminal Form | Gull wing |
| Shipping Package | Tape and reel (TR) |
| Automotive Qualification | AEC-Q100 |
| Temperature Grade | Automotive |
Konfigurasi Pin MCP3428T-E/SL
| Pin produk 1 | SCL — I2C clock input |
| Pin produk 2 | SDA — I2C data input and output |
| Pin produk 3 | VREF+ — Positive reference input or internal reference connection |
| Pin produk 4 | VREF- — Negative reference input |
| Pin produk 5 | VIN0- — Negative input for differential channel 0 |
| Pin produk 6 | VIN0+ — Positive input for differential channel 0 |
| Pin produk 7 | VIN1- — Negative input for differential channel 1 |
| Pin produk 8 | VIN1+ — Positive input for differential channel 1 |
| Pin produk 9 | VIN2- — Negative input for differential channel 2 |
| Pin produk 10 | VIN2+ — Positive input for differential channel 2 |
| Pin produk 11 | VIN3- — Negative input for differential channel 3 |
| Pin produk 12 | VIN3+ — Positive input for differential channel 3 |
| Pin produk 13 | VSS — Analog ground |
| Pin produk 14 | VDD — Positive supply input |
Aplikasi Umum
MCP3428T-E/SL cocok untuk 6 aplikasis: Industrial Pressure and Temperature Acquisition, Bridge and Load-Cell Measurement, Battery and Energy Monitoring, Environmental and IoT Sensing, Laboratory and Instrumentation, Automotive Sensor Interface.
Industrial Pressure and Temperature Acquisition
The MCP3428T-E/SL is well suited to multi-channel industrial measurement because it combines four differential inputs with 16-bit resolution and an integrated 2.048 V reference. Each bridge, thermocouple conditioning stage, or resistance sensor can be connected to a differential channel, allowing small sensor voltages to be measured with better rejection of common-mode noise than a single-ended arrangement. The device converts at 15 SPS, which is appropriate for pressure, liquid-level, and temperature signals that change relatively slowly. Place anti-alias filters at the input connectors, use a quiet analog ground around the converter, and allow the digital filter to settle after changing channels. The I2C interface keeps the wiring compact while allowing the controller to retrieve calibrated measurements and check conversion status.
Direkomendasikan
Bridge and Load-Cell Measurement
The MCP3428T-E/SL can digitize low-level differential signals from resistive bridges, strain gauges, and load cells while rejecting the larger common-mode voltage present on both input lines. Its 16-bit resolution preserves fine changes in bridge output, and the 2.048 V internal reference provides a stable reference for calibration and ratiometric sensor systems. The 15 SPS rate matches slow force, weight, and displacement measurements without requiring a high-speed converter. For best performance, keep input leads short, place differential input filtering close to the device, and connect the analog return to a carefully arranged ground plane. Firmware should average or digitally filter successive readings when the mechanical signal changes slowly and should avoid treating samples taken during a channel change as immediately valid.
Direkomendasikan
Battery and Energy Monitoring
The MCP3428T-E/SL can measure several battery-cell or power-rail voltages in a multi-channel monitoring system. Four differential channels permit paired voltage measurements that improve accuracy when a sensing arrangement introduces an offset, while the 16-bit conversion result supports threshold monitoring and energy calculations. The integrated 2.048 V reference helps maintain a repeatable measurement baseline, although the complete accuracy budget still includes the reference error, analog front end, and calibration. Because the converter operates at 15 SPS, it is intended for supervisory measurements such as pack voltage, charger state, or supply health rather than high-rate current waveform analysis. Firmware should define conversion intervals, reject readings taken during switching transitions, and apply calibration factors appropriate to the battery chemistry and temperature range.
Direkomendasikan
Environmental and IoT Sensing
The MCP3428T-E/SL supports compact environmental-monitoring systems that combine several slow-changing sensor outputs. Four differential channels can serve resistive temperature probes, humidity sensors, gas-sensor outputs, or light-sensor interfaces when their analog levels fall within the ±2.048 V differential range. The 16-bit resolution helps preserve small changes in sensor output, while I2C permits sharing a compact two-wire bus with a host microcontroller. Its 15 SPS conversion rate is adequate for periodic sampling rather than continuous high-frequency observation. Designers should scale sensor outputs into the converter's input range, protect external inputs from transients, and use shielded or properly routed traces where noisy motors or switching converters are nearby. A staged conversion sequence can reduce switching activity and power consumption.
Direkomendasikan
Laboratory and Instrumentation
The MCP3428T-E/SL is appropriate for laboratory instruments that measure several low-frequency or dc signals with modest dynamic range. The four differential inputs reduce sensitivity to shared ground offsets, and the 16-bit delta-sigma architecture emphasizes resolution and noise performance over acquisition speed. This makes the converter useful for bench instruments, process-control demonstrators, data loggers, and laboratory calibration fixtures. The 2.048 V internal reference reduces reference-component requirements, but users should still budget for input conditioning, calibration, and protection. Place analog and digital return currents in controlled paths, terminate I2C pull-ups according to bus capacitance, and avoid routing measurement inputs beside high-current switching nodes. Firmware can compensate offset and gain errors, but the calibration routine should preserve the differential measurement topology.
Direkomendasikan
Automotive Sensor Interface
The MCP3428T-E/SL is suitable for automotive sensing designs that require high-resolution conversion of relatively slow sensor signals and use an AEC-Q100-associated ordering option. Differential input channels can monitor pressure, position, temperature, or resistive sensors while rejecting common-mode disturbances present in vehicle electrical systems. The 15 SPS conversion rate is appropriate for supervisory and control-loop functions, and the 14-SOIC package supports conventional surface-mount assembly. Protection against automotive transients, ESD, and incorrect wiring must be added ahead of the converter rather than assumed from the ADC alone. Layout should minimize loop areas around sensitive inputs, maintain a stable reference path, and keep switching and high-current return paths away from the analog section. Firmware should include plausibility checks and diagnostic handling for sensor open-circuit or short-circuit conditions.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk MCP3428T-E/SL — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | MCP3428-E/SL | MCP3425-I/SL | MCP3427-I/SL | MCP3424-I/SL | MCP3423-I/SL |
|---|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Input Channels | 4 differential channels | 4 differential channels | 4 channels | 2 differential channels | 4 single-ended channels | 2 differential channels |
| Conversion Rate | 15 SPS | 15 SPS | 22.5 SPS | 15 SPS | 22.5 SPS | 22.5 SPS |
| Internal Reference | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V |
| Input Range | ±2.048 V differential | ±2.048 V differential | ±2.048 V differential | ±2.048 V differential | 0 to 2.048 V single-ended | ±2.048 V differential |
| Digital Interface | I2C, 2-wire | I2C, 2-wire | I2C, 2-wire | I2C, 2-wire | I2C, 2-wire | I2C, 2-wire |
| Qualification | Automotive AEC-Q100 | Temperature-grade ordering option | Industrial ordering option | Industrial ordering option | Industrial ordering option | Industrial ordering option |
Diferensiator Kunci
- Four fully differential measurement channels (vsMCP3427-I/SL)
- Single-ended versus differential input flexibility (vsMCP3424-I/SL)
- Automotive-oriented ordering and qualification (vsMCP3425-I/SL)
Catatan Desain
Place input filtering, reference bypass components, and the analog supply decoupling directly beside their associated MCP3428T-E/SL pins. Keep the four differential input routes short, symmetrical, and away from switching nodes. A continuous ground plane under the analog section generally provides a lower-impedance return than fragmented copper, but partition noisy return currents so they do not cross the measurement inputs.
The I2C lines are sensitive to capacitance, pull-up strength, and clock-stretch behavior. Place pull-up resistors where the bus is quietest and use the minimum resistance that still satisfies the sink-current and rise-time requirements of every connected device. Avoid long branches from the main bus because they increase loading and can make SDA and SCL transition timing inconsistent.
Do not treat every conversion as valid immediately after changing the input channel or converter configuration. Allow the delta-sigma modulator and digital filter to settle, then collect the result at the interval defined by the operating mode. Also verify polarity on each VIN+ and VIN- connection: reversing a differential pair reverses the measured value even when the absolute voltage remains within the ±2.048 V range.
Keep the analog and digital supply paths clean and decouple VDD at the device with the capacitance specified by the manufacturer datasheet. Because the converter includes an internal 2.048 V reference, supply noise and reference decoupling can still appear as measurement error. Avoid routing return current from motors, relays, or switching regulators through the converter's analog ground region.
Informasi Konformitas
The product documentation identifies MCP3428T-E/SL as automotive AEC-Q100 qualified. Other environmental and material-compliance declarations are not stated in the available product information.