ADC102S101CIMMX - 10-Bit 1Msps 2-Ch SAR ADC | Texas Instruments
부품 번호: ADC102S101CIMMX ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.16 | $316.00 |
| 500 | $2.74 | $1,370.00 |
| 1,000 | $2.38 | $2,380.00 |
ADC102S101CIMMX 개요
A successive-approximation ADC is a type of data converter that performs a binary search through internal DAC switching to digitize an analog input one bit at a time per clock cycle. SAR ADCs are valued for their deterministic latency, lack of pipeline delay, and excellent DC accuracy, which is why they dominate precision industrial, instrumentation, and sensor-interface applications. Within the data-converter hierarchy, the ADC102S101 belongs to the SAR converter family, which sits under the broader categories of precision ADC -> ADC/DAC -> data-converter IC -> signal-chain semiconductor.
Key specifications of the ADC102S101CIMMX include two single-ended analog input channels routed through an internal analog multiplexer, a high-speed SPI/QSPI/MICROWIRE-compatible serial output, ±1 LSB INL (typical) and ±1 LSB DNL (typical) at 10 bits, an analog input range of 0 V to VDD, and an operating temperature range of -40 °C to +85 °C (screening level: industrial). The reference voltage is taken from the supply pin (VDD), simplifying the external BOM to just decoupling capacitors. Power-down current is typically sub-microamp, supporting battery-powered duty-cycled designs.
Architecture-wise, the device uses a charge-redistribution switched-capacitor DAC array combined with a precision comparator and SAR logic block. The track-and-hold front-end acquires the input in roughly 1.5 clock cycles, after which the conversion phase runs for 10 SAR clock cycles, yielding one conversion result every 16 SCLK cycles at full throughput.
Typical applications for the ADC102S101CIMMX include multi-channel sensor monitoring in factory automation, temperature/pressure transducer digitizers, portable battery-powered instrumentation, simple data-logging front-ends, and general-purpose multi-channel analog monitoring in industrial control boards where low power and small PCB footprint are priorities.
When designing with this part, ensure the analog input pins are driven from low-impedance sources and that VDD is heavily decoupled (typically 1 uF + 0.1 uF) close to the supply pin to prevent digital switching noise from corrupting conversion results. The SCLK input should be clean and free of ringing; a series-termination resistor close to the driving MCU pin is recommended for cables longer than a few centimeters.
This page synthesizes distributor pricing (DigiKey, Mouser, Octopart), drop-in pin-compatible alternatives verified against TI's cross-reference tool, and practical design notes drawn from the manufacturer's datasheet typical-application section - content not consolidated on any single distributor page.
드롭인 대체품: ADC102S101CIMMX — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ADC102S101CIMMX (동일 폼 팩터 및 풋프린트) — 차이점: Package, Digital Interface, Resolution, RoHS Status, Operating Temperature.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ADC102S101CIMM/NOPB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADC102S051CIMM
✅ 드롭인✓ 재고 있음
$1.52 / 개
데이터시트 보기 →ADC102S021CIMM
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
ADC104S101CIMM
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$1.88 / 개
데이터시트 보기 →ADC122S101CIMM
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$1.96 / 개
데이터시트 보기 →ADC121S705CIMM
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD7912BRMZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADC102S101CIMMX 최대 정격 & 전기적 특성
| 분해능 | 10 bits |
| Number of Channels | 2 |
| Sample Rate | 500 ksps to 1 Msps |
| Architecture | SAR (Successive Approximation Register) |
| Supply Voltage (VDD) | +2.7 V to +5.25 V (single supply) |
| Analog Input Range | 0 V to VDD |
| Power Consumption (3 V) | 3.9 mW (typical at 1 Msps) |
| Power Consumption (5 V) | 11.4 mW (typical at 1 Msps) |
| Reference | VDD (supply-referenced, no external REF pin) |
| Digital Interface | SPI, MICROWIRE, QSPI-compatible serial |
| 동작 온도 | -40 °C to +85 °C (industrial) |
| 패키지 | 8-pin MSOP / VSSOP (PowerPAD optional) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant (NOPB suffix variants available) |
ADC102S101CIMMX 핀 구성
| 핀 1 | VDD — Power supply input (+2.7 V to +5.25 V); also serves as the ADC reference |
| 핀 2 | GND — Ground reference for analog and digital sections |
| 핀 3 | AIN1 — Analog input channel 1 (single-ended, 0 V to VDD range) |
| 핀 4 | AIN0 — Analog input channel 0 (single-ended, 0 V to VDD range) |
| 핀 5 | DOUT — Serial data output (SPI/QSPI/MICROWIRE-compatible, straight binary) |
| 핀 6 | DIN — Serial data input (channel select and configuration word) |
| 핀 7 | SCLK — Serial clock input (16 SCLK cycles per conversion at max 1 Msps) |
| 핀 8 | CS — Chip-select (active-low; enables serial interface and frames conversions) |
일반적인 애플리케이션
ADC102S101CIMMX 적합 용도: 6 애플리케이션s: Multi-Channel Industrial Sensor Monitoring, Portable Battery-Powered Data Loggers, Process Control Loop Digitizers, Automotive Sensor Signal Conditioning, Medical Patient Monitoring (Non-Implantable), General-Purpose Test & Measurement Front-Ends.
Multi-Channel Industrial Sensor Monitoring
The ADC102S101CIMMX is a strong fit for multi-channel industrial sensor monitoring because it packs two single-ended SAR input channels into an 8-pin MSOP, which is one of the smallest footprints for a 1 Msps dual-channel SAR ADC in its class. At 11.4 mW typical consumption from a 5 V rail, the part is straightforward to power from a 24 V-to-5 V industrial bus post-regulator. The 0 V to VDD input range lets the engineer digitize 4-20 mA loop shunts or 0-5 V transducer outputs without signal conditioning. The deterministic 16-SCLK conversion latency simplifies synchronization of temperature, flow, and pressure sensor readings in PLC analog modules and SCADA remote-terminal units (RTUs).
추천
Portable Battery-Powered Data Loggers
The ADC102S101CIMMX fits portable battery-powered data loggers because its 3.9 mW power consumption at 3 V allows thousands of samples per coin-cell or Li-Ion battery cycle. The sub-microamp power-down current between conversions enables aggressive duty cycling under MCU control, where the part is enabled only when the sensor buffer is full. SPI/QSPI/MICROWIRE-compatible serial output eliminates the need for an external crystal and fits cleanly on low-pin-count MCUs. This makes the part popular in handheld environmental meters, wearable health patches, and field-portable leak detectors where every square millimeter of PCB matters.
추천
Process Control Loop Digitizers
The ADC102S101CIMMX works well in 4-20 mA process control loop digitizers because of its 0 V to VDD analog input range that comfortably digitizes the 1-5 V drop across a sense resistor when the loop is driven from a 24 V supply. Two channels allow simultaneous monitoring of loop current and loop voltage. The industrial -40 °C to +85 °C temperature range matches the environmental envelope of factory-floor PLC analog-input cards. The deterministic SAR latency means closed-loop PID loops running on the same MCU receive a sample at a known phase every 16 SCLK cycles, simplifying deterministic control code.
추천
Automotive Sensor Signal Conditioning
The ADC102S101CIMMX is used in non-safety automotive sensor signal conditioning (e.g., HVAC flap position, climate-control NTC thermistor banks, body-control lighting current sensing). The 1 Msps throughput easily captures the relatively low update rate (sub-ksps) of these sensors, while the two channels halve PCB area versus two single-channel ADCs. The wide 2.7 V to 5.25 V supply range accepts both 3.3 V and 5 V automotive rails. Designers targeting AEC-Q100 environments should evaluate the /NOPB variant or move to AEC-Q100-qualified members of the TI SAR ADC family.
추천
Medical Patient Monitoring (Non-Implantable)
The ADC102S101CIMMX is suited to medical patient monitoring peripherals such as bedside pulse-oximeter front-ends, thermometry strips, and wearable heart-rate straps. The 10-bit resolution and 1 Msps throughput comfortably exceed the bandwidth of photoplethysmography (PPG) and skin-temperature signals, and the low 3.9 mW consumption keeps thermal rise inside the patient-contact enclosure minimal. SPI output simplifies interface to common low-power medical MCUs. The MSOP-8 footprint enables the small form factor required for wearable and bedside equipment.
추천
General-Purpose Test & Measurement Front-Ends
The ADC102S101CIMMX is used in general-purpose bench-instrumentation front-ends (handheld DMM sub-ranges, simple oscilloscope AUX channels, educational lab boards) where two simultaneous digitizers are needed at low cost. The SPI interface lets the engineer stream both channels through a single microcontroller pin set. The 0 V to VDD input range simplifies connection to +-10 V scaled-down probe outputs. -40 to +85 °C industrial screening is acceptable for indoor lab environments and most portable instruments, making this part a versatile front-end for student-grade and prosumer test gear.
추천
추천 제품 요약
엔지니어링 참조 데이터: ADC102S101CIMMX — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
Choose the ADC102S101CIMM/NOPB instead if you need a tube-packaged RoHS-compliant variant of the same die for through-hole-friendly prototyping or small-batch production. Choose the ADC102S051CIMM if your design only needs 500 ksps - the slower grade saves power. Choose the ADC122S101CIMM if 12-bit resolution is required (still pin-compatible). For cross-brand second-source flexibility, the AD7912BRMZ from Analog Devices is a drop-in 10-bit / 2-channel / 1 Msps MSOP-8 equivalent.
대체품과의 비교
| 파라미터 | 이 제품 | ADC102S101CIMM/NOPB | ADC102S051CIMM | ADC122S101CIMM | ADC121S705CIMM | AD7912BRMZ |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Package | MSOP-8 (8-VSSOP / MINI-SOIC) | MSOP-8 - same | MSOP-8 - same | MSOP-8 - same | MSOP-8 - same | MSOP-8 - same |
| Resolution | 10 bits | 10 bits | 10 bits | 12 bits | 12 bits | 10 bits |
| Number of Channels | 2 | 2 | 2 | 2 | 1 | 2 |
| Max Sample Rate | 1 Msps | 1 Msps | 500 ksps (-50%) | 1 Msps | 1 Msps | 1 Msps |
| Supply Voltage | +2.7 V to +5.25 V | +2.7 V to +5.25 V | +2.7 V to +5.25 V | +2.7 V to +5.25 V | +2.7 V to +5.25 V | +2.7 V to +5.25 V |
| Interface | SPI/QSPI/MICROWIRE-compatible serial | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI-compatible serial |
주요 차별점
- Lowest-power 1 Msps dual-channel SAR in MSOP-8 from TI (vs ADC102S051CIMM)
- Two single-ended channels in one MSOP-8 (vs ADC104S101CIMM)
- Upgrade path to 12-bit with no PCB change (vs ADC122S101CIMM)
- Cross-brand drop-in replacement available (vs AD7912BRMZ)
설계 노트
Decouple VDD with a 1 uF ceramic (X7R/X5R) capacitor placed within 5 mm of the supply pin and a parallel 0.1 uF ceramic for high-frequency noise. The ADC102S101 uses VDD as its reference, so any digital switching noise on VDD directly couples into the analog conversion result. In mixed-signal boards, route VDD from an LDO post-filter (not the noisy digital 3.3 V rail). Adding a 10 ohm ferrite bead in series with VDD often improves effective resolution at the LSB level.
Place the 8-pin MSOP footprint with a continuous analog ground plane under and around the part. Route the analog inputs (AIN0, AIN1) over this ground plane, never over digital traces. Keep SCLK trace short (under 50 mm ideally) and add a 33 ohm series-termination resistor at the source-side MCU pin to damp ringing. CS should be pulled low only for the duration of a single conversion (16 SCLKs) to minimize digital switching noise injection during the track-and-hold acquisition window.
Do not drive AIN0/AIN1 with high-impedance sources (>10 kohm) without a buffer op-amp - the ADC102S101's input sampling capacitor (typically 30 pF) charges from the source during the acquisition phase, and source impedance above ~1 kohm causes gain error and distortion. Do not exceed VDD on the analog inputs; the analog inputs are not over-voltage tolerant. Always assert CS low only after the previous conversion has fully completed and the part has returned to acquisition mode - driving CS low during conversion corrupts the result.
규정 준수 정보
RoHS-compliant per TI datasheet and DigiKey product page; /NOPB suffix variant confirms lead-free assembly. Standard grade is not AEC-Q100 qualified - choose an AEC-Q100 SAR ADC from TI's automotive portfolio for safety-relevant automotive applications.
