MCP3301-BI/P - 13-Bit 100 kSPS SPI ADC | Microchip Technology
部品番号: MCP3301-BI/P ✓ 生産中MCP3301-BI/P 概要
An ADC is an analog-to-digital converter, a semiconductor that samples a continuous voltage and converts it into a numerical value for processing by a microcontroller or other digital controller. The MCP3301 belongs to the SAR ADC, ADC, data-converter IC, and power-management-adjacent signal-conversion hierarchy. Its fully differential input can reject common-mode noise when the source is arranged around a biased reference voltage.
Key features include 13-bit resolution, a 100 kSPS maximum sampling rate, and ±1 LSB maximum differential nonlinearity. The B-grade MCP3301-BI/P has a maximum integral nonlinearity of ±2 LSB. Its SPI interface provides a straightforward connection to embedded processors, while single-supply operation simplifies system power planning for industrial, battery-powered, and remote data-acquisition equipment.
The device uses a successive-approximation conversion architecture. Each conversion determines the unknown input through a sequence of internal comparisons, after which the result is transferred through the serial interface. The differential input architecture is useful when the measured signal is small relative to the ADC supply. Biasing both inputs near the midpoint of the input range improves use of the available code range, while keeping their differential voltage within the converter's permitted input range.
Typical applications include battery-powered environmental sensors, industrial pressure or temperature acquisition, remote monitoring, laboratory measurement equipment, and embedded control systems. The 100 kSPS rate is suitable for continuously changing analog measurements that do not require high-rate waveform capture, and the differential input can simplify front-end design for bridge sensors and small-signal transducers.
Designers should provide a stable reference voltage, bypass the supply close to the device, and maintain the analog input voltage within the operating range. The SPI clock, chip-select, and digital output timing must satisfy the manufacturer datasheet, and unused input and reference pins must be connected according to its recommended application circuit.
This page consolidates verified manufacturer and distributor information, package-level alternatives, interface guidance, and application-specific selection context. It is intended to help engineers locate the datasheet, compare interchangeable variants, plan a PCB layout, and assess whether the MCP3301-BI/P fits a precision, low-power measurement design.
ドロップイン代替品: MCP3301-BI/P — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MCP3301-BI/P （同一形状・フットプリント） — 相違点: Digital Interface, Package.
MCP3301-CI/P
✅ ドロップイン価格はお問い合わせください
データシートを見る →MCP3301-AI/P
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MCP3301-DI/P
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MCP3301-EI/P
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MCP3301-GI/P
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MCP3301-BI/P 最大定格＆電気的特性
| ADC Type | Successive Approximation Register (SAR) |
| 分解能 | 13 bits |
| Number of Input Channels | 1 differential input channel |
| Conversion Rate | 100 kSPS |
| Supply Voltage Range | 4.5 V to 5.5 V |
| Supply Configuration | Single supply |
| Input Architecture | Full differential input |
| Digital Interface | SPI serial interface |
| Differential Nonlinearity | ±1 LSB maximum |
| Integral Nonlinearity | ±2 LSB maximum for MCP3301-B |
| 動作温度範囲 | -40°C to +85°C |
| パッケージ | 8-pin PDIP, 0.300 inch (7.62 mm) pitch |
| 実装タイプ | Through-hole |
| Packaging Type | Tube |
MCP3301-BI/P ピン構成
| ピン 1 | CS — Active-low chip-select input |
| ピン 2 | DIN+ — Positive differential analog input |
| ピン 3 | DIN- — Negative differential analog input |
| ピン 4 | VSS — Ground reference |
| ピン 5 | VREF+ — Positive reference input |
| ピン 6 | VREF- — Negative reference input |
| ピン 7 | VDD — Positive analog and digital supply |
| ピン 8 | DOUT — Serial data output |
主な用途
MCP3301-BI/P の用途: 6 件s: Battery-Powered Environmental Sensors, Industrial Pressure and Process Measurement, Remote Data Acquisition, Temperature and Thermocouple Instrumentation, Laboratory and Test Equipment, Automated Control and Monitoring Systems.
Battery-Powered Environmental Sensors
The MCP3301-BI/P is suitable for battery-powered environmental sensing because the MCP3301 family combines a 13-bit SAR converter, low-power operation, and a fully differential input in an 8-pin PDIP package. A temperature, humidity, pressure, or gas sensor can be biased around the midpoint of the converter's input range and connected differentially, allowing common-mode sensor noise to be rejected. The 100 kSPS conversion rate is ample for slow environmental changes, while the 4.5 V to 5.5 V supply range simplifies regulated system rails. Battery life still depends on conversion frequency, reference stability, and the power consumed by the sensor and host processor.
おすすめ
Industrial Pressure and Process Measurement
The MCP3301-BI/P fits industrial pressure, level, and process-monitoring designs that require 13-bit measurement resolution without a high-speed conversion rate. Its single fully differential input can accept a bridge or instrumentation-style sensor when the source is biased within the ADC input range, while the 100 kSPS rate supports responsive process readings and diagnostics. The SPI interface allows a controller to retrieve each sample over a short, deterministic serial transaction. Industrial designs should use a stable reference, input protection, grounding, and shielding appropriate to the sensor cable and environmental conditions.
おすすめ
Remote Data Acquisition
The MCP3301-BI/P is well suited to remote data-acquisition nodes because it provides one differential channel with 13-bit resolution, a 100 kSPS maximum sampling rate, and an SPI-compatible data path. A sensor signal can be sampled locally and transferred to a microcontroller, radio, or energy-harvesting controller, reducing analog data transmission and allowing processing near the source. The MCP3301 family is specifically identified for low-power and remote acquisition applications. Actual deployment energy should be calculated using the manufacturer operating-current data and the chosen sampling interval, neither of which is fully provided in the verified search snippets.
おすすめ
Temperature and Thermocouple Instrumentation
The MCP3301-BI/P can serve as the conversion stage in temperature instrumentation when the sensor output is conditioned into a differential voltage within the permitted analog range. The 13-bit resolution and ±2 LSB maximum INL for the B grade provide useful precision for many temperature-monitoring systems, while 100 kSPS is substantially faster than typical thermal settling rates. A thermocouple design also needs cold-junction compensation, reference-junction temperature measurement, input protection, and careful grounding. The supplied data does not specify the allowed input range, so the final sensor and front-end design must follow the manufacturer datasheet.
おすすめ
Laboratory and Test Equipment
The MCP3301-BI/P can serve as a measurement ADC in compact laboratory instruments that need 13-bit resolution, differential input handling, and a straightforward serial data interface. A 100 kSPS rate is suitable for slowly varying measurements, calibration channels, and control-system feedback rather than high-bandwidth oscilloscope acquisition. Using the fully differential input reduces sensitivity to common-mode voltage in bench wiring, while the SPI output can connect to a microcontroller or embedded control system. Reference accuracy, analog grounding, connector design, and calibration determine the final instrument-level precision.
おすすめ
Automated Control and Monitoring Systems
The MCP3301-BI/P is appropriate for feedback and supervisory monitoring in automated control systems where one analog variable must be digitized for a controller. The 13-bit resolution gives 8192 nominal code levels, and the 100 kSPS rate allows substantially more frequent updates than most slow industrial variables require. Its SPI interface is practical for a microcontroller polling the converter between other peripheral operations. The differential input supports common-mode rejection when the analog signal is properly biased, while the DIP package supports through-hole prototyping, educational builds, and repair-oriented assemblies where surface-mount access is inconvenient.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MCP3301-BI/P — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MCP3301-CI/P | MCP3301-AI/P | MCP3301-DI/P | MCP3301-EI/P | MCP3301-GI/P |
|---|---|---|---|---|---|---|
| Package | 8-pin PDIP | 8-pin PDIP - same | 8-pin PDIP - same | 8-pin PDIP - same | 8-pin PDIP - same | 8-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Resolution | 13 bits | 13 bits | 13 bits | 13 bits | 13 bits | 13 bits |
| Input Channels | 1 differential input | 1 differential input | 1 differential input | 1 differential input | 1 differential input | 1 differential input |
| Conversion Rate | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Interface | SPI serial interface | SPI serial interface | SPI serial interface | SPI serial interface | SPI serial interface | SPI serial interface |
| Conversion Architecture | SAR ADC | SAR ADC | SAR ADC | SAR ADC | SAR ADC | SAR ADC |
| Grade Suffix | B-grade | C-grade | A-grade | D-grade | E-grade | G-grade |
主な差別化要因
- Verified 13-bit differential conversion performance （vs MCP3301-CI/P)
- Single-channel differential input simplifies sensor connections （vs MCP3301-AI/P)
- Through-hole package supports prototype and repair workflows （vs MCP3301-DI/P)
- 100 kSPS rate exceeds slow sensor-update requirements （vs MCP3301-EI/P)
設計ノート
Place the MCP3301-BI/P close to the analog source and keep the DIN+, DIN-, VREF+, and VREF- routes short and away from SPI switching signals. Treat the reference pins as sensitive analog nodes: use a low-noise reference, minimize loop area, and follow the manufacturer recommended bypass-capacitor arrangement. The DIP package simplifies prototyping, but trace geometry and grounding still determine whether the 13-bit resolution produces useful system accuracy.
Decouple the 4.5 V to 5.5 V VDD rail at the device and verify it stays within the rated range during startup, sensor transients, and digital activity. A stable low-noise reference is as important as supply regulation because reference error contributes directly to conversion accuracy. Battery-powered designs should also disable or slow conversions when measurements are not required; use the manufacturer operating-current and shutdown information when calculating energy consumption.
Do not treat the differential inputs as two unrelated single-ended channels. Bias the sensor output into the converter's valid common-mode range, keep the DIN+ and DIN- traces appropriately terminated, and avoid allowing either input to exceed the absolute limits in the datasheet. Also verify SPI mode, clock polarity, chip-select behavior, and conversion-start timing against the official device documentation before writing firmware.
Route the SPI signals as short, controlled-impedance digital interconnects and keep the analog reference and input nets away from the CS and DOUT transitions. If the sensor cable is long or the measurement is small, use guarded grounding, input filtering, or differential isolation ahead of the MCP3301. Added filtering must be checked against the 100 kSPS conversion rate and the required sensor settling time rather than applied without bandwidth analysis.
コンプライアンス情報
The supplied manufacturer and distributor results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred.
