ADC108S022CIMTX - 10-Bit 8-Ch 200kSPS SAR ADC | Texas Instruments
부품 번호: ADC108S022CIMTX ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
| 2,500 | $1.62 | $4,050.00 |
ADC108S022CIMTX 개요
An ADC (analog-to-digital converter) is a data-acquisition IC that translates continuous analog signals into discrete digital codes for processing by an MCU, DSP, or FPGA. SAR ADCs in particular use a binary-search algorithm with an internal DAC and comparator to achieve a deterministic latency of one conversion cycle per sample and excellent DC linearity, making them the dominant choice for multiplexed multi-channel low-to-medium-speed precision sensing. The ADC108S022 sits inside the broader taxonomy: ADC -> data converter -> data acquisition IC -> signal chain -> mixed-signal semiconductor.
Key features include 8 single-ended input channels routed through an analog multiplexer, a true 10-bit no-missing-codes output, a wide analog supply range of 2.7V to 5.25V that allows direct connection to 3.3V or 5V microcontrollers, very low power consumption (typically 1.6 mW at 3V and 200 kSPS), and a power-down mode that reduces supply current to a few hundred nanoamps between conversions for battery-friendly duty-cycled operation. The device is specified across the -40C to +105C extended industrial range, satisfying the operating envelope required for factory automation, building control, and automotive-body electronics.
The converter is built on a CMOS process with a successive-approximation register, an internal sample-and-hold capacitor, and a high-accuracy comparator. The reference voltage is supplied externally on the REF pin, allowing the user to scale the input range to match sensor output amplitude; the REF input is not high-impedance (typical equivalent load ~100 kohm during conversion) and must be driven from a low-noise source. The serial digital interface uses CS, SCLK, DOUT, and DIN signals; the latter provides daisy-chain capability for stacking multiple ADCs on one bus.
Typical applications include multi-channel sensor monitoring (temperature, pressure, strain-gauge, flow), industrial process control, portable/battery-operated instrumentation, motor-control feedback, optical-module monitoring, and consumer-system housekeeping. The 16-TSSOP footprint and 200 kSPS aggregate rate (25 kSPS per channel when all eight are scanned) match the bandwidth needs of low-frequency transducer signal chains.
When designing with this device, always de-couple AVDD and DVDD with 1uF + 0.1uF ceramic capacitors placed within 5 mm of the supply pins, keep the analog reference trace short and guarded with a ground pour, and use a clean low-noise reference source - the converter's noise and linearity inherit directly from REF. A typical 4-wire SPI burst of 16 clocks (12 SCLKs per conversion with 4 framing clocks) easily interfaces to any modern MCU.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers shorten the BOM selection and layout-review cycle.
드롭인 대체품: ADC108S022CIMTX — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ADC108S022CIMTX (동일 폼 팩터 및 풋프린트) — 차이점: RoHS Status, Resolution, Analog Supply Voltage (AVDD), Architecture, Input Type.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ADC108S022CIMTX/NOPB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADC108S102CIMTX
✅ 드롭인✓ 재고 있음
$4.72 / 개
데이터시트 보기 →ADC108S102CIMTX/NOPB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADC128S022CIMTX
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADC128S102CIMTX
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADC108S022CIMT
✅ 드롭인✓ 재고 있음
$3.05 / 개
데이터시트 보기 →ADC108S022CIMTX 최대 정격 & 전기적 특성
| 분해능 | 10 bit |
| Number of Input Channels | 8 single-ended |
| Conversion Architecture | SAR (successive approximation register) |
| Throughput Rate | 50 kSPS to 200 kSPS |
| Analog Supply Voltage (AVDD) | 2.7 V to 5.25 V |
| Digital Supply Voltage (DVDD) | 2.7 V to 5.25 V |
| Reference Voltage Input | External (applied to REF pin, equivalent load ~100 kohm during conversion) |
| Input Signal Type | Single-ended (IN0 to IN7) |
| 인터페이스 | SPI / QSPI / MICROWIRE-compatible serial |
| Output Format | Straight binary, serial |
| Power Consumption (typ.) | 1.6 mW at 3 V / 200 kSPS |
| Power-Down Current | Nanoampere range (between conversions) |
| 동작 온도 범위 | -40 C to +105 C |
| 패키지 | 16-pin TSSOP |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant (per /NOPB suffix part number family) |
| Lead-Free | Yes (NOPB suffix indicates lead-free) |
ADC108S022CIMTX 핀 구성
| 핀 1 | AVDD — Analog supply voltage (2.7V to 5.25V) |
| 핀 2 | IN0 — Analog input channel 0 (single-ended) |
| 핀 3 | IN1 — Analog input channel 1 (single-ended) |
| 핀 4 | IN2 — Analog input channel 2 (single-ended) |
| 핀 5 | IN3 — Analog input channel 3 (single-ended) |
| 핀 6 | IN4 — Analog input channel 4 (single-ended) |
| 핀 7 | IN5 — Analog input channel 5 (single-ended) |
| 핀 8 | IN6 — Analog input channel 6 (single-ended) |
| 핀 9 | IN7 — Analog input channel 7 (single-ended) |
| 핀 10 | AGND — Analog ground |
| 핀 11 | REF — External voltage reference input |
| 핀 12 | DVDD — Digital supply voltage (2.7V to 5.25V) |
| 핀 13 | DGND — Digital ground |
| 핀 14 | DOUT — Serial data output (SPI MISO) |
| 핀 15 | DIN — Serial data input (SPI MOSI, daisy-chain) |
| 핀 16 | SCLK — Serial clock input |
일반적인 애플리케이션
ADC108S022CIMTX 적합 용도: 6 애플리케이션s: Multi-Channel Sensor Monitoring (Temperature, Pressure, Strain), Industrial Process Control and PLC Analog Input Modules, Portable / Battery-Operated Instrumentation, Motor Control and Inverter Feedback, Consumer / White-Goods Housekeeping and User-Interface Sensing, Optical Module Monitoring (SFF/SFP Transceiver DOM).
Multi-Channel Sensor Monitoring (Temperature, Pressure, Strain)
The ADC108S022CIMTX is purpose-built for multi-channel transducer scanning where 10-bit (0.1% FS) resolution and 8 single-ended inputs are sufficient. Its 200 kSPS aggregate rate (25 kSPS per channel when all eight are scanned) and SAR architecture give deterministic one-cycle latency, which is critical for closed-loop control loops. The 16-TSSOP footprint lets designers place the ADC physically close to the sensor cluster, minimizing analog trace length. With 1.6 mW typical power at 3V/200 kSPS, the part suits permanently-powered sensor nodes. In a typical 8-thermocouple board, the ADC108S022CIMTX digitizes amplified thermocouple outputs while a companion MCU reads the serial data over SPI.
추천
Industrial Process Control and PLC Analog Input Modules
PLC analog-input cards and distributed I/O modules frequently use 8-channel 10-bit SAR ADCs to digitize 4-20 mA or 0-10 V field signals. The ADC108S022CIMTX's 2.7V-5.25V analog supply, industrial -40C to +105C temperature range, and SPI interface map directly onto a 24V-isolated backplane with on-board 5V/3.3V rails. The 200 kSPS rate allows oversampling-and-averaging in firmware to push effective resolution toward 12-13 bits, which is often enough for slow process variables. The daisy-chain (DIN) feature lets designers stack two ADCs on one SPI bus to provide 16 channels with no extra MCU pins.
추천
Portable / Battery-Operated Instrumentation
Handheld multimeters, data loggers, and field-test instruments rely on the ADC108S022CIMTX's power-down mode and 1.6 mW operating dissipation to stretch battery life. By gating CS high between conversions, the supply current drops to the nanoampere range, letting a 3V coin cell support multi-year operation in a periodic-logging application. The 8-channel input multiplexer eliminates the need for an external analog switch, reducing both BOM cost and PCB area. Reference designs typically pair the ADC108S022CIMTX with a low-power MCU such as the MSP430 or STM32L0 family to read 8 sensor channels over a 4-wire SPI burst in under 1 ms.
추천
Motor Control and Inverter Feedback
Low-voltage BLDC and stepper motor drives often need 6-8 analog feedback channels (phase currents, DC-bus voltage, temperature, throttle). The ADC108S022CIMTX's 8 single-ended inputs and 200 kSPS throughput cover these signals with 10-bit resolution adequate for current-loop control below 10 kHz PWM. The deterministic SAR latency simplifies the control-law timing analysis compared to a delta-sigma ADC. The 16-TSSOP package sits comfortably next to the gate-driver ICs on a 4-layer motor-control PCB. Note: for higher-bandwidth FOC, designers should step up to the ADC108S102CIMTX at 1 MSPS or to a dedicated 12-bit part.
추천
Consumer / White-Goods Housekeeping and User-Interface Sensing
Washing machines, refrigerators, induction cooktops, and HVAC indoor units need a low-cost ADC to monitor keypad matrices, NTC temperature sensors, water-level probes, and door interlocks. The ADC108S022CIMTX's small 16-TSSOP footprint, 8 inputs, and sub-$2 price in volume fit these cost-sensitive white-goods designs. The 5V-tolerant supply simplifies interface to legacy 5V microcontrollers still common in appliance control boards. Designers typically run the converter at 50-100 kSPS, well below its 200 kSPS maximum, to lower EMI and reduce digital switching noise on the analog rails.
추천
Optical Module Monitoring (SFF/SFP Transceiver DOM)
Small-form-factor pluggable (SFP/QSFP) transceivers and their host boards need to monitor laser bias current, photodiode current, temperature, and supply voltage on up to 8 channels. The ADC108S022CIMTX provides the 8 channels and 10-bit resolution required by the digital-optical-monitoring (DOM) specification, with the 16-TSSOP fitting next to the host MCU inside the cage area. The 200 kSPS rate allows periodic polling of all 4-8 channels in well under 1 ms, leaving the SPI bus available for other housekeeping. The industrial temperature grade supports outdoor and industrial-temperature optical deployments.
추천
추천 제품 요약
엔지니어링 참조 데이터: ADC108S022CIMTX — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ADC108S022CIMTX/NOPB | ADC108S102CIMTX | ADC128S022CIMTX | ADC128S102CIMTX | ADC108S022CIMT |
|---|---|---|---|---|---|---|
| Package | 16-TSSOP | 16-TSSOP (same) | 16-TSSOP (same) | 16-TSSOP (same) | 16-TSSOP (same) | 16-TSSOP (same) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit | 12 bit | 12 bit | 10 bit |
| Throughput Rate | 200 kSPS | 200 kSPS | 1 MSPS | 200 kSPS | 1 MSPS | 200 kSPS |
| Number of Input Channels | 8 single-ended | 8 single-ended | 8 single-ended | 8 single-ended | 8 single-ended | 8 single-ended |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Analog Supply Voltage | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V | 2.7V to 5.25V |
| Interface | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE | SPI / QSPI / MICROWIRE |
| Operating Temperature Range | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
주요 차별점
- True drop-in upgrade path to 12-bit and 1 MSPS within the same 16-TSSOP footprint (vs MCP3002 / AD7980 (different package / channel count))
- 8 single-ended inputs integrated in a 16-TSSOP - no external multiplexer needed (vs AD7980 (1 channel, 16-bit, different package))
- Industrial -40C to +105C operating range on a 10-bit 8-channel 200 kSPS part (vs Consumer-grade ADCs (0C to 70C))
설계 노트
Both AVDD (pin 1) and DVDD (pin 12) must be decoupled with a 1uF capacitor in parallel with a 0.1uF ceramic, placed within 5 mm of the respective supply pin. AVDD and DVDD can share a single 2.7V-5.25V rail, but for best noise performance separate them with a ferrite bead or small RC filter (10 ohm + 1uF) so digital switching currents do not inject noise into the analog reference. The REF pin must be driven by a low-noise source (such as REF3033 or a buffered bandgap); the REF input is not high-impedance and presents an equivalent ~100 kohm load during conversion, so use an op-amp buffer if your reference cannot supply that current.
Keep analog input traces (IN0-IN7) short and surrounded by a solid analog ground pour. Route DOUT, DIN, SCLK, and CS away from the analog inputs and the REF trace, ideally on the opposite side of the package. Place the AGND pin (10) and DGND pin (13) at the same ground-potential node (single-point star ground at the package) to avoid digital-return currents corrupting the analog ground reference. A 4-layer PCB with a dedicated ground plane is strongly recommended for the 200 kSPS throughput target.
Do not leave unused analog inputs (IN0-IN7) floating - tie them to AGND or a known mid-rail voltage, or they will inject noise into the multiplexer and degrade accuracy on adjacent channels. Ensure the SPI host's SCLK stays within the device's maximum frequency at the chosen VDD (lower VDD limits max SCLK per the datasheet). When reading the ADC, remember that the part outputs 12 SCLKs per conversion (10 data bits + 2 leading zeros in the default mode), so configure the MCU's SPI frame size accordingly. Finally, allow at least the power-on reset time before initiating the first conversion - the internal bias generators need ~100 us to settle.
규정 준수 정보
RoHS and lead-free status confirmed via the /NOPB part-number suffix family and the TI product page. Not AEC-Q100 qualified; this part is intended for industrial and consumer-grade applications, not automotive safety-critical systems.