ADC101S021CISDX - 10-Bit 200kSPS 1-Ch SAR ADC SPI | TI
Teilenummer: ADC101S021CISDX ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.57 | $25,70 |
| 100 | $2.05 | $205,00 |
| 500 | $1.65 | $825,00 |
| 1.000 | $1.32 | $1.320,00 |
ADC101S021CISDX Übersicht
An ADC (analog-to-digital converter) is an integrated circuit that samples continuous analog voltages and produces discrete digital codes proportional to the input. SAR ADCs use a binary-search successive-approximation algorithm that delivers deterministic latency, no pipeline delay, and excellent DC accuracy at moderate sample rates, making them a dominant topology in the broader data-converter hierarchy of analog-to-digital converter -> ADC -> data converter -> signal chain IC -> semiconductor.
Key features of the ADC101S021CISDX include a single-ended analog input with input range of 0 V to VDD (where VDD is the supply), guaranteed 50 kSPS to 200 kSPS operation, straight-binary serial output, and typical power consumption of 2.34 mW at 3.6 V and 8.9 mW at 5.25 V. The single-supply operation spans 2.7 V to 5.25 V, eliminating the need for a negative rail in low-power systems. An external SCLK governs the conversion clock, and a CS_n falling edge initiates each conversion, producing results over the next 16 SCLK cycles.
The converter's architecture is a classic charge-redistribution SAR with an internal sample-and-hold and a high-speed comparator, followed by a digital correction engine that outputs 10-bit straight binary data MSB-first. Internal scaling and low-leakage design allow the device to maintain specified performance across the full 50-200 kSPS window, which is unusual in SAR ADCs that often guarantee accuracy only at a single maximum sample rate.
Typical applications for the ADC101S021CISDX include portable battery-powered instrumentation, sensor signal conditioning, handheld meters, system monitoring in white goods and HVAC, industrial process control, and any design where a small-footprint, low-power, SPI-compatible 10-bit ADC is required. Its 6-WSON package is well suited to high-density PCB designs.
A key design consideration is decoupling: place a 1 uF ceramic bypass capacitor close to the VDD pin and ensure the analog input is driven from a low-impedance source to avoid conversion errors. Designers should also confirm that SCLK remains inactive during conversion to prevent digital noise coupling into the analog front end.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selecting and validating the ADC101S021CISDX in new designs.
Drop-in-Alternativen für ADC101S021CISDX – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit ADC101S021CISDX (gleiche Bauform und Footprint) – abweichend in Package, Resolution, Operating Temperature, Input Type, Architecture.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
ADC101S021CISDX/NOPB
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADC101S021CISD
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADC081S021CISDX/NOPB
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADC081S051CISDX/NOPB
✅ Drop-In✓ Auf Lager
$1.62 / Stück
Datenblatt ansehen →XC101S021
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
ADC101S021CISDX Grenzwerte & elektrische Eigenschaften
| Auflösung | 10 bits |
| Number of Channels | 1 |
| Sample Rate | 50 kSPS to 200 kSPS |
| Architecture | SAR (Successive Approximation Register) |
| Input Type | Single-Ended |
| Analog Input Voltage Range | 0 V to VDD |
| Supply Voltage (VDD) | 2.7 V to 5.25 V |
| Supply Current (typ, 3.6 V) | 0.65 mA |
| Supply Current (typ, 5.25 V) | 1.7 mA |
| Power Consumption (3.6 V) | 2.34 mW (typ) |
| Power Consumption (5.25 V) | 8.9 mW (typ) |
| Digital Interface | SPI / QSPI / MICROWIRE-compatible serial |
| Betriebstemperatur | -40 C to +85 C |
| Gehäuse | 6-WSON (2.2 mm x 2.5 mm) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
ADC101S021CISDX Pin-Konfiguration
| Pin 1 | VDD — Power supply input (2.7 V to 5.25 V) |
| Pin 2 | GND — Ground |
| Pin 3 | AIN — Analog input (single-ended, 0 V to VDD) |
| Pin 4 | DOUT — Serial data output (SPI/QSPI/MICROWIRE-compatible) |
| Pin 5 | SCLK — Serial clock input |
| Pin 6 | CS — Chip select, active low |
Typische Anwendungen
ADC101S021CISDX ist geeignet für 6 Anwendungs: Portable Battery-Powered Instrumentation, Industrial Sensor Signal Conditioning, System Monitoring in White Goods and HVAC, Handheld Meters and Portable Test Equipment, IoT Edge Sensor Nodes, Automotive Body and Interior Electronics (Non-Safety).
Portable Battery-Powered Instrumentation
The ADC101S021CISDX suits portable, battery-powered instrumentation because of its low 2.34 mW typical power consumption at 3.6 V supply and wide 2.7 V to 5.25 V single-supply operation per the TI datasheet. With a 200 kSPS sample rate the device captures transducer outputs from temperature, pressure, and strain-gauge sensors with sufficient bandwidth for process monitoring while keeping average supply current under 0.7 mA. The 6-WSON (2.2x2.5 mm) package drops directly onto handheld PCB layouts where every square millimeter matters. Compared with higher-speed ADCs the SAR topology adds no pipeline delay, so single-shot conversions return deterministic results for triggered measurements in handheld multimeters and field data loggers.
Empfohlen
Industrial Sensor Signal Conditioning
In industrial sensor conditioning applications the ADC101S021CISDX digitizes 0-5 V analog signals from 4-20 mA loop converters, thermocouple amplifiers, and bridge sensors with 10-bit resolution and 50-200 kSPS throughput per the TI ADC101S021 datasheet. The single-ended input simplifies front-end design when paired with op-amp gain stages, while the SPI/QSPI/MICROWIRE-compatible serial output connects directly to industrial MCUs and PLC I/O modules. Industrial designers value the part's -40 C to +85 C operating range and RoHS compliance, ensuring reliability in factory-floor enclosures and process-control cabinets.
Empfohlen
System Monitoring in White Goods and HVAC
White goods and HVAC controllers use the ADC101S021CISDX to monitor thermistor, humidity, airflow, and pressure sensors at 200 kSPS per the TI datasheet, providing real-time feedback to compressor and fan control loops. The 6-WSON package fits inside tight control-board layouts, while the SPI interface allows direct connection to cost-effective 8-bit and 32-bit MCUs that already include SPI peripherals. With a 2.7 V to 5.25 V supply range the device operates from the same 3.3 V or 5 V rail that powers the MCU, simplifying power tree design and reducing BOM cost in high-volume appliance manufacturing.
Empfohlen
Handheld Meters and Portable Test Equipment
Handheld digital multimeters, clamp meters, and portable test equipment benefit from the ADC101S021CISDX's low 2.34 mW power at 3.6 V and 6-WSON small footprint per the TI ADC101S021 datasheet. The 10-bit resolution gives a usable dynamic range for voltage, current, and resistance measurements after analog signal conditioning, while the 200 kSPS sample rate supports RMS calculations for AC measurements. The straight-binary SPI output simplifies firmware development on entry-level MCUs. Combined with the part's wide operating temperature range of -40 C to +85 C, it is well suited to field-use instruments that must operate in cold and hot environments.
Empfohlen
IoT Edge Sensor Nodes
IoT edge sensor nodes such as wireless environmental monitors, smart-home sensors, and asset-tracking devices use the ADC101S021CISDX to digitize analog sensor readings before wireless transmission, with its 2.34 mW typical power at 3.6 V keeping total node consumption low per the TI datasheet. The SPI-compatible serial output connects directly to low-power wireless MCUs and SoCs that already provide SPI masters, while the 6-WSON (2.2x2.5 mm) package fits inside miniature enclosures. The SAR topology guarantees no latency, so triggered wake-and-measure cycles return deterministic results before the radio transmits.
Empfohlen
Automotive Body and Interior Electronics (Non-Safety)
Non-safety automotive body and interior electronics such as seat-position sensors, ambient-light controllers, and climate-control feedback loops use the ADC101S021CISDX to digitize analog signals at 200 kSPS per the TI ADC101S021 datasheet. Although the standard CISDX part is not AEC-Q100 qualified, the wide -40 C to +85 C operating range and robust 6-WSON package suit under-dash and cabin modules where AEC-Q100 is not required. Designers targeting safety-relevant ADAS systems should select an AEC-Q100-qualified ADC such as TI's automotive-grade portfolio instead.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für ADC101S021CISDX – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | ADC101S021CISDX/NOPB | ADC101S021CISD | ADC081S021CISDX/NOPB | ADC081S051CISDX/NOPB | XC101S021 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | SiChange |
| Package | 6-WSON (2.2x2.5) | 6-WSON (2.2x2.5) - same | 6-WSON (2.2x2.5) - same | 6-WSON (2.2x2.5) - same | 6-WSON (2.2x2.5) - same | 6-WSON (2.2x2.5) - same |
| Resolution | 10 bits | 10 bits | 10 bits | 8 bits | 8 bits | 10 bits |
| Sample Rate (max) | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 500 kSPS | 200 kSPS |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| 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 |
| Power Consumption (typ) | 2.34 mW @ 3.6 V | 2.34 mW @ 3.6 V | 2.34 mW @ 3.6 V | 2.34 mW @ 3.6 V | 2.34 mW @ 3.6 V | ~0.78 mW @ 3.6 V (1/3 dynamic power) |
| Lifecycle Status | Obsolete | Active | Obsolete | Active | Active | Active |
Wichtigste Unterscheidungsmerkmale
- Lower dynamic power consumption than TI original (vs. XC101S021)
- Lower cost at lower resolution (vs. ADC081S021CISDX/NOPB)
- Higher sample rate option in same footprint (vs. ADC081S051CISDX/NOPB)
Designhinweise
Place a 1 uF X7R ceramic bypass capacitor as close as possible to the VDD pin (pin 1) with a short, wide trace to GND (pin 2). The ADC101S021CISDX draws a typical 0.65 mA at 3.6 V per the TI datasheet, and inadequate decoupling can inject switching noise into the analog front end. For multi-ADC systems, use a star-ground topology to prevent digital return currents from corrupting the analog ground reference.
Route the SPI signals (SCLK, DOUT, CS) as short, matched traces and keep them physically separated from the analog input trace (AIN). The 6-WSON exposed pad should be soldered to a grounded copper pour to provide thermal relief and a low-impedance ground return. Avoid running digital traces directly beneath the AIN pin to prevent capacitive coupling that may degrade INL and DNL.
Drive the analog input AIN from a low-impedance source (op-amp output or buffered sensor) with a bandwidth at least 10x the ADC's 200 kSPS Nyquist. Source impedance above 1 kohm can cause gain errors due to the input sampling charge. For high-impedance sensors, add an input buffer such as the OPA333 between the sensor and AIN. Keep SCLK inactive during conversion to minimize digital feedthrough into the analog input.
Do not operate the ADC101S021CISDX above 5.25 V or below 2.7 V - the device is not 3.3 V tolerant on inputs when VDD is below the input voltage. Do not leave CS_n floating; tie it high through a pull-up resistor or drive it from the MCU GPIO. Do not apply analog input voltages before VDD is established, as this can cause latch-up. For obsolete-status designs, migrate to the actively-produced ADC101S021CISDX/NOPB to avoid end-of-life supply risk.
Compliance-Informationen
RoHS and lead-free per TI product page. Not AEC-Q100 qualified; choose an automotive-grade ADC from TI's portfolio for safety-relevant automotive designs.
