MCP3002-I/P - 10-Bit Dual-Input SPI ADC | Microchip Technology
部品番号: MCP3002-I/P ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.1371 | $3.14 |
| 10 | $3.1371 | $31.37 |
| 100 | $3.1371 | $313.71 |
| 500 | $3.1371 | $1,568.55 |
| 1,000 | $3.1371 | $3,137.10 |
MCP3002-I/P 概要
An ADC is a data-acquisition IC that converts an analog voltage into a numeric code. The MCP3002 belongs to the SAR ADC family, within analog-to-digital converters and broader data-conversion semiconductors. SAR conversion uses a successive comparison process to determine the analog input’s digital representation. This architecture offers predictable sampling behavior and works well with microcontrollers that implement the corresponding SPI transaction protocol.
The MCP3002 combines two 10-bit conversion channels with an SPI interface, onboard sample-and-hold circuitry, and a maximum sampling rate of 200 kSPS. Input selection supports either a single pseudo-differential channel or dual single-ended channels. The verified manufacturer and distributor data identify a 2.7 V operating supply and an operating-temperature range of -40°C to +85°C for the I/P grade, making the device appropriate for industrial-temperature embedded systems.
Its SPI interface allows a host microcontroller to initiate conversion, receive the 10-bit result, and determine channel information without parallel wiring. The converter is particularly useful where analog measurements must be added to a PIC or other SPI-capable embedded controller. Because the interface is serial, the MCP3002 reduces signal count compared with a parallel ADC while preserving 10-bit measurement resolution.
Typical applications include two-channel sensor acquisition, potentiometer position measurement, temperature or pressure transducer interfaces, battery and supply monitoring, embedded instrumentation, and low-speed industrial control. The 200 ksps sampling rate is suitable for many continuously monitored control signals, while designers should verify acquisition timing, input bandwidth, reference stability, and system-level error when designing the analog front end.
For reliable operation, connect the analog and digital grounds according to the manufacturer guidance and place the required bypass and input-conditioning components close to the converter. The analog input range must remain within the device limits, and the reference voltage determines conversion scaling. Firmware must implement the exact SPI command and sample timing specified by the manufacturer rather than treating the converter as a generic SPI ADC.
This page combines verified manufacturer and distributor specifications, source-linked product information, and practical engineering guidance for embedded ADC designs. Pricing and availability references are current only as of 2026-10-23, and engineers should check current distributor stock and lead time before placing production orders.
ドロップイン代替品: MCP3002-I/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。
クイック比較ツール — 並列比較する代替部品を選択:
MCP3002-I/MS
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP3002-I/P 最大定格＆電気的特性
| 分解能 | 10 bit |
| Number of Analog Input Channels | 2 single-ended inputs or 1 pseudo-differential input pair |
| サンプリングレート | 200 kSPS |
| Converter Architecture | Successive approximation register (SAR) |
| Sample-and-Hold Circuitry | Onboard |
| 電源電圧 | 2.7 V |
| Digital Interface | SPI |
| Input Configuration | Programmable single pseudo-differential or dual single-ended inputs |
| パッケージ | 8-pin PDIP |
| Package Body Width | 0.300 in (7.62 mm) |
| 動作温度範囲 | -40°C to +85°C |
| Conversion Code | 0 to 1023 |
| Differential Nonlinearity | ±1 LSB maximum |
| Integral Nonlinearity | ±1 LSB maximum |
| Data Interface Format | Serial SPI |
| 実装タイプ | Through-hole |
| カテゴリ | Analog to Digital Converters (ADC) |
| Product Type | Dual-channel SAR ADC |
MCP3002-I/P ピン構成
| ピン 1 | CS/SHDN — Chip select and sample-and-hold shutdown control; consult the manufacturer datasheet for operating polarity and sequencing. |
| ピン 2 | DIN0 — Analog input channel 0; function is programmable as single-ended or part of the pseudo-differential input pair. |
| ピン 3 | VREF- — Negative reference input. |
| ピン 4 | VSS — Ground reference. |
| ピン 5 | VREF+ — Positive reference input. |
| ピン 6 | DOUT — Serial data output. |
| ピン 7 | DIN1 — Analog input channel 1; function is programmable as single-ended or part of the pseudo-differential input pair. |
| ピン 8 | CLK — SPI clock input. |
主な用途
MCP3002-I/P の用途: 6 件s: Industrial Temperature and Pressure Sensing, Potentiometer and Position Feedback, Battery and Supply Monitoring, Embedded Sensor Acquisition, Low-Speed Test and Measurement, Educational and Prototyping Systems.
Industrial Temperature and Pressure Sensing
The MCP3002-I/P fits industrial measurement front ends when a microcontroller needs two analog channels in a small through-hole footprint. Its 10-bit conversion codes provide 1024 levels across the selected input and reference range, while the 200 kSPS sampling rate is ample for many temperature and pressure signals that change more slowly than the conversion hardware can sample. A conditioning amplifier or sensor front end can scale the transducer output into the converter input range. The onboard sample-and-hold circuitry helps isolate the selected input during conversion, and SPI keeps the host connection compact. Reference accuracy and sensor noise determine the useful system resolution.
おすすめ
Potentiometer and Position Feedback
The MCP3002-I/P is appropriate for reading resistive position sensors whose analog output must be converted to a digital control value. The 10-bit SAR ADC supports 0–1023 conversion codes, providing a defined number of software-visible steps between the configured input limits. A microcontroller can select the channel through SPI, acquire the sample, and map the result to a calibrated position or control command. The 200 kSPS rating provides margin for scanning multiple signals and performing basic filtering. For noisier potentiometers, add suitable filtering and verify that the sensor’s output impedance and settling behavior remain compatible with the acquisition timing.
おすすめ
Battery and Supply Monitoring
MCP3002-I/P can digitize scaled supply or battery voltages for embedded monitoring and power-management decisions. Its two single-ended input configuration allows two monitored rails to be measured with one converter, while the SPI interface reports each result to a supervisory controller. The 2.7 V converter supply makes it useful in compact low-voltage systems, but the analog input and reference limits must be checked carefully before applying a higher voltage directly. A resistor divider, input protection, and filtering network should be designed for the required fault conditions. Firmware can periodically sample the channels and report thresholds without introducing a parallel data bus.
おすすめ
Embedded Sensor Acquisition
The MCP3002-I/P is useful when a design must add two 10-bit analog measurements to a microcontroller that does not provide suitable external ADC channels. Its SAR architecture, onboard sample-and-hold circuit, and serial interface reduce the number of data lines required at the host. The 200 kSPS conversion capability supports rapid periodic sampling, while the dual-input mode accommodates two independent sensor channels. The ADC should be paired with sensor-specific signal conditioning and a stable reference so that digital results remain repeatable. Firmware must account for the conversion command, sample timing, and SPI clock limitations defined by the manufacturer.
おすすめ
Low-Speed Test and Measurement
MCP3002-I/P can serve as the analog acquisition element in a compact test fixture or measurement module. The 10-bit resolution and 200 kSPS sampling rate are appropriate for slow or moderate-bandwidth signals such as setpoint voltages, sensor outputs, and calibrated test levels. A microcontroller can issue the MCP3002 conversion sequence over SPI and log or transmit the resulting code. The 8-pin PDIP package also simplifies through-hole prototyping and manual service. Measurement accuracy depends on the reference voltage, analog input conditioning, grounding, calibration, and the limitations of ±1 LSB maximum DNL and ±1 LSB maximum INL under the selected operating conditions.
おすすめ
Educational and Prototyping Systems
The MCP3002-I/P is a practical ADC for microcontroller education and breadboard-based prototypes because it exposes a simple SPI-controlled conversion function in an 8-pin PDIP package. Students can compare single-ended and pseudo-differential measurements, read potentiometers or light-dependent sensors, and display the 10-bit result through firmware. The 200 kSPS rating leaves room for interactive experiments while keeping the interface manageable. A lab should still include regulated supply decoupling, a defined reference, common ground routing, and input protection. The component is best used as a learning interface where measurement wiring and timing are visible and repeatable.
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: MCP3002-I/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 | MCP3002-I/MS |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
主な差別化要因
- Integrated dual-channel acquisition （vs MCP3002-I/MS)
- Serial interface for compact embedded designs （vs MCP3002-I/MS)
- Verified industrial-temperature ordering （vs MCP3002-I/MS)
- Documented nonlinearity targets （vs MCP3002-I/MS)
設計ノート
Plan the analog and digital supply paths around the verified 2.7 V operating condition. Place the manufacturer-recommended bypass capacitors close to the supply pins and keep the return path continuous. The MCP3002-I/P is an ADC, so supply noise and reference variation can appear directly in the conversion result; use a stable reference and route high-current return currents away from the analog input and reference nodes.
Route sensor and reference connections away from SPI clock traces and switching-node paths. Keep the analog traces short, use a continuous ground reference where appropriate, and place input filtering or protection close to the MCP3002-I/P pins. Verify that the selected input source impedance and any resistor-divider values meet the acquisition requirements in the manufacturer datasheet.
Do not configure the two MCP3002-I/MS comparison candidates as drop-in parts without checking their actual package and pinout. MCP3002-I/MS is listed only as a related family comparison because the supplied data does not verify an identical 8-pin PDIP footprint. Also avoid assuming that 10-bit resolution guarantees 10-bit system accuracy; reference accuracy, sensor noise, grounding, calibration, and input conditioning determine the final measurement quality.
コンプライアンス情報
The supplied manufacturer and distributor results do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. No compliance claim has been inferred.