MCP3002-I/MS - 10-Bit Dual-Channel SAR ADC | Microchip
부품 번호: MCP3002-I/MS ✓ 활성MCP3002-I/MS 개요
An ADC, or analog-to-digital converter, is an integrated circuit that converts a continuously varying analog voltage into a numeric code for processing by a microcontroller or other digital controller. Within the signal-chain hierarchy, the MCP3002-I/MS is a data-conversion IC, specifically a SAR ADC with an SPI interface. SAR conversion repeatedly resolves the input voltage through a successive comparison process, making this device suitable for embedded instrumentation that prioritizes low complexity, serial integration, and modest resolution.
Key features include 10-bit resolution, a maximum sampling rate of 200 ksample/s, two analog input channels, and a serial peripheral interface. The converter supports single-ended or pseudo-differential analog-input configurations, allowing one differential measurement to be represented as a pair of related input channels. The manufacturer materials also identify a maximum differential nonlinearity of ±1 LSB and a maximum integral nonlinearity of ±1 LSB. Its small MSOP package supports compact embedded-control layouts where component area and PCB routing efficiency are important.
The SPI interface connects the ADC to a host microcontroller through serial data, clock, chip-select, and supply-reference connections. A 10-bit result provides 1,024 possible codes, while the two channels allow related analog quantities to be sampled without using two separate converter packages. Designers must still establish suitable analog input conditioning, reference-voltage stability, grounding, and digital-bus signal integrity to obtain repeatable measurements.
Typical uses include industrial temperature and pressure monitoring, embedded process-control measurements, low-speed sensor acquisition, and general-purpose control systems. Its 200 ksample/s rate is substantially higher than many slow environmental sensors require, while the 10-bit resolution is appropriate for measurement systems that do not need the resolution of a high-precision sigma-delta or successive-approximation converter with more than 10 bits.
A critical design consideration is analog-reference and grounding quality because conversion accuracy depends on the reference voltage and the sampled input being represented reliably. Place decoupling capacitance close to the supply pins, use a low-impedance reference path, and keep analog input routing away from fast SPI clock edges. The verified source excerpts do not provide complete pricing, pin-level descriptions, temperature limits, or absolute accuracy curves, so those values require confirmation in the manufacturer datasheet.
드롭인 대체품: MCP3002-I/MS — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MCP3002-I/MS (동일 폼 팩터 및 풋프린트) — 차이점: Digital Interface, Input Configuration, Mounting Type, Number of Analog Input Channels, Package.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청MCP3002-I/MS 최대 정격 & 전기적 특성
| 분해능 | 10 bits |
| Architecture | Successive-approximation register (SAR) |
| Maximum Sampling Rate | 200 ksample/s |
| Number of Analog Input Channels | 2 channels |
| Input Configuration | Single-ended or pseudo-differential |
| Digital Interface | SPI serial interface |
| Minimum Supply Voltage | 2.7 V |
| Maximum Differential Nonlinearity | ±1 LSB |
| Maximum Integral Nonlinearity | ±1 LSB |
| 패키지 | 8-pin MSOP |
| Package Width | 0.118 inch (3.00 mm) |
| 실장 유형 | Surface mount |
| On-Chip Sample-and-Hold | Yes |
| Automotive Qualification | AEC-Q100 variant indicated for MCP3002-I/SN |
MCP3002-I/MS 0.118 inch (3.00 mm) 핀 구성 가이드
MCP3002-I/MS(0.118 inch (3.00 mm) 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: MCP3002-I/MS.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
MCP3002-I/MS 적합 용도: 6 애플리케이션s: Industrial Temperature Monitoring, Pressure and Process-Sensor Acquisition, Embedded Sensor Interface, Low-Speed Data Acquisition, Battery-Powered Monitoring, Control-Signal Digitization.
Industrial Temperature Monitoring
The MCP3002-I/MS fits two-channel industrial temperature monitoring because it combines 10-bit resolution with a 200 ksample/s sampling rate in an 8-pin MSOP. Its two analog inputs can acquire temperature-derived voltages from separate sensors when each channel has suitable filtering and conditioning. The 10-bit converter provides 1,024 codes, making it appropriate for thermal control, equipment monitoring, and process readouts that require periodic rather than high-resolution measurements. A microcontroller can read both channels through the SPI interface, while the MSOP package preserves board area. The principal tradeoff is that sensor error, reference drift, and ADC nonlinearity can dominate the achieved system accuracy, so calibration and a stable voltage reference remain necessary.
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Pressure and Process-Sensor Acquisition
The MCP3002-I/MS is suitable for pressure or industrial process-sensor acquisition when the conditioned sensor output falls within the converter's supported input range. Two channels permit monitoring of a primary process variable and a secondary reference or control signal, while the 200 ksample/s rate supports responsive sampling. The SAR ADC and SPI interface simplify connection to an embedded controller without requiring a parallel data bus. For bridge, current-loop, or resistive sensors, however, conditioning and protection must precede the ADC because the verified 10-bit specification does not itself establish the complete analog front end. Reference stability and direct coupling of the voltage source into the two inputs are the main accuracy considerations.
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Embedded Sensor Interface
The MCP3002-I/MS provides a compact interface for embedded sensors whose analog outputs must be converted before a microcontroller can apply filtering, compensation, or threshold decisions. Its dual-channel configuration can support two related sensor readings, and its 200 ksample/s maximum rate exceeds the needs of common temperature, pressure, and slow-position sensors. The 8-pin MSOP package also reduces PCB footprint compared with many through-hole converters. Engineers should ensure that each input remains within the manufacturer-defined range and that the reference voltage is stable. An RC anti-aliasing network, input protection, and calibration table are often more valuable than additional conversion speed for slow sensor systems.
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Low-Speed Data Acquisition
The MCP3002-I/MS can serve as the analog front end of a compact, low-speed data-acquisition system that periodically records two voltages through SPI. A 10-bit, 1,024-code result is appropriate for status monitoring, laboratory fixtures, educational equipment, and basic process logging where high-fidelity waveform capture is unnecessary. The converter's 200 ksample/s capability provides timing headroom, but the host firmware, trigger strategy, and SPI transaction rate determine realized throughput. Engineers should reject or filter out-of-band noise before conversion and calibrate the two channels against a known reference. This design trades resolution and analog bandwidth for low component count, straightforward firmware, and a compact 8-pin MSOP footprint.
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Battery-Powered Monitoring
The MCP3002-I/MS is appropriate for battery-powered environmental monitoring when the system periodically samples two low-frequency analog sensor outputs. Its compact 8-pin MSOP package and dual-channel architecture minimize board area, while the 10-bit resolution supports practical threshold and trend measurements. Because the verified excerpts do not state operating current or shutdown behavior, battery-life calculations require the complete manufacturer datasheet; the 2.7 V minimum supply also constrains battery and regulator choices. A practical design should power the ADC only during measurement where supported, use a stable low-power reference, and avoid leaving the SPI bus in a state that draws excessive leakage. Solar or energy-harvesting products may need additional switched-capacitor or regulator components.
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Control-Signal Digitization
The MCP3002-I/MS can digitize two slow control or feedback voltages in an embedded control system. One channel may represent a commanded setpoint and the other a measured actuator response, allowing the host controller to compare them over SPI. The 200 ksample/s rate supports prompt updates in many servo, valve, and equipment-control loops, while 10-bit resolution provides adequate resolution for coarse supervisory control. For safety-critical or high-loop-gain systems, verify latency, monotonic behavior, and missing-code behavior against the manufacturer data. The two-channel format is efficient, but independent analog paths can still require matched resistors, separate filtering, and calibration to avoid systematic channel-to-channel error.
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추천 제품 요약
엔지니어링 참조 데이터: MCP3002-I/MS — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
주요 차별점
- Two-channel measurement in one compact converter (vs MCP3002-I/SN)
- SPI integration with embedded embedded-control compatibility (vs Parallel-interface ADC alternatives)
- Configurable analog measurement arrangement (vs Single-ended-only converters)
설계 노트
Do not treat MCP3002-I/MS and MCP3002-I/SN as interchangeable package options. The verified source excerpts identify MCP3002-I/MS as an 8-pin MSOP and MCP3002-I/SN as an 8-pin SOIC; their PCB land patterns are different even though the converter family and core resolution are similar. Before laying out or purchasing a replacement, check the manufacturer's package drawing and ordering table rather than inferring pin compatibility from the MCP3002 family name.
Route the two analog inputs away from the SPI clock and other high-slew digital nets, and place input filtering close to the MCP3002-I/MS pins. The verified 10-bit SAR architecture can capture noise present during the sample-and-hold interval, so filtering and grounding can materially affect repeatability. Keep the reference path low impedance and decouple the converter supply locally. Exact capacitor values and exposed-package details must follow the manufacturer datasheet because they are not present in the verified excerpts.
Use a host SPI clock that complies with the MCP3002-I/MS operating limits, and define idle states for clock, chip-select, and data pins in firmware. Sample timing should allow the required acquisition interval before reading the conversion result. Because the converter's maximum sampling rate is 200 ksample/s, a faster serial clock does not guarantee a faster valid conversion sequence; transaction overhead, input settling, and device timing must be included in the actual sampling loop.
Verify the complete supply and reference ranges against the current manufacturer datasheet before choosing the system regulator and analog reference. The verified sources establish a 2.7 V minimum supply but do not provide the maximum voltage, operating current, or reference limits. Use local bypass capacitors with low effective series impedance and avoid routing digital return currents through the analog reference ground path. If the analog source can exceed the converter limits, add suitable input protection rather than relying on internal clamping behavior.
규정 준수 정보
The verified comparison excerpt identifies the 8-pin SOIC MCP3002-I/SN as an automotive AEC-Q100 variant, but it does not establish AEC-Q100 qualification for the 8-pin MSOP MCP3002-I/MS. RoHS, REACH, lead-free, halogen-free, and conflict-minerals information was not included in the supplied data.
