ADC101S101CISDX/NOPB - 10-Bit 1MSPS SAR ADC, 6-WSON | Texas Instruments
Référence : ADC101S101CISDX/NOPB ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.42 | $24,20 |
| 100 | $2.05 | $205,00 |
| 500 | $1.74 | $870,00 |
| 1 000 | $1.51 | $1 510,00 |
| 4 500 | $1.32 | $5 940,00 |
ADC101S101CISDX/NOPB Présentation
A SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm against an internal precision DAC to digitize an input voltage. Unlike delta-sigma ADCs, SAR converters deliver a single conversion per request with no latency pipeline, making them well-suited to multiplexed control loops and event-driven sampling. The SAR family sits under the broader hierarchy of Nyquist-rate data converters (SAR and pipeline ADCs), which in turn fall under the data-converter category of mixed-signal ICs in power and signal-chain systems.
Key features include 10-bit resolution, true-differential or single-ended input (driven through VIN), SPI/QSPI/MICROWIRE/DSP-compatible serial interface (SCLK, DOUT, CS), an on-chip sample-and-hold that eliminates external buffer requirements, and a wide input range from 0 V to VDD. Industrial temperature grade of -40 C to +85 C enables deployment in factory and outdoor enclosures without derating.
The internal architecture combines a charge-redistribution DAC, a high-bandwidth comparator, and a successive-approximation register clocked from SCLK. Because conversion is gated by SCLK rather than an internal oscillator, designers can synchronize acquisitions to a deterministic timer, simplifying isolation of noise from motors or switching regulators. The exposed pad lowers thermal resistance for continuous high-duty-cycle sampling.
Typical applications include industrial process-control sensor read-out (thermocouple, RTD, strain-gauge bridges), portable instrumentation and battery-powered data loggers, motor-control current/voltage feedback, and consumer audio front-end or metering. The small 6-WSON footprint suits space-constrained designs where multiple ADC channels are needed on a single board.
When designing with this part, place a 0.1 uF decoupling capacitor as close as possible to the VDD pin and tie the exposed pad (pin 6 / DAP) to a clean analog ground. Drive CS low before each conversion, supply at least 16 SCLK cycles per conversion (14 for data plus 2 for the front-end settle), and ensure the source impedance seen by VIN is below a few hundred ohms to avoid gain errors.
This page synthesizes distributor pricing, drop-in alternatives in the same 6-WSON footprint, and practical design notes that are not collected together in the manufacturer datasheet.
Alternatives de remplacement direct pour ADC101S101CISDX/NOPB — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ADC101S101CISDX/NOPB (même facteur de forme et même empreinte) — différant par Package, Resolution, Architecture, Operating Temperature, Power Consumption (3.6 V).
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ADC101S101CISD/NOPB
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADC101S021CISDX
✅ Remplacement direct✓ En stock
$1.32 / unité
Voir la fiche technique →ADC081S051CISDX/NOPB
✅ Remplacement direct✓ En stock
$1.62 / unité
Voir la fiche technique →ADC101S021CIMFX
✅ Remplacement direct✓ En stock
$1.4 / unité
Voir la fiche technique →AD7476AAKSZ-REEL
✅ Remplacement direct✓ En stock
$4.04 / unité
Voir la fiche technique →ADC101S101CISDX/NOPB Valeurs maximales et caractéristiques électriques
| Résolution | 10 bit |
| Number of Channels | 1 |
| Architecture | SAR (Successive Approximation Register) |
| Sample Rate | 0.5 MSPS to 1 MSPS |
| Input Type | Single-ended |
| Analog Input Voltage Range | 0 V to VDD |
| Supply Voltage (VDD) | 2.7 V to 5.25 V |
| Data Interface | SPI, QSPI, MICROWIRE, DSP-compatible serial |
| Boîtier / Format | 6-WSON (2.2 x 2.5 mm) with exposed pad |
| Température de fonctionnement | -40 C to +85 C (Industrial) |
| Type de montage | Surface Mount |
| Packaging | Tape & Reel (4500 pcs/reel) |
| Lead Finish | Pb-free (NOPB) |
| Statut RoHS | Compliant |
Configuration des broches de ADC101S101CISDX/NOPB
| Broche 1 | VIN — Analog input (single-ended, 0 V to VDD) |
| Broche 2 | GND — Ground reference |
| Broche 3 | VDD — Power supply (2.7 V to 5.25 V) |
| Broche 4 | DOUT — Serial data output (SPI MISO) |
| Broche 5 | SCLK — Serial clock input |
| Broche 6 | CS — Chip select (active low) |
Applications typiques
ADC101S101CISDX/NOPB convient pour 6 applications: Industrial Process-Control Sensor Read-Out, Portable Battery-Powered Data Loggers, Motor Control Current and Voltage Feedback, Consumer Audio Front-End and Metering, Medical Device Signal Acquisition, Sensor Module and IoT Edge Devices.
Industrial Process-Control Sensor Read-Out
The ADC101S101CISDX/NOPB fits industrial process-control read-out because its 1 MSPS SAR throughput and 10-bit resolution provide deterministic low-latency digitization for closed-loop control. The 2.7 V to 5.25 V supply interfaces directly to 3.3 V and 5 V PLC backplanes, while the -40 C to +85 C industrial temperature grade tolerates factory-floor thermal swings. With 0 V to VDD input range the part digitizes thermocouple, RTD, and 4-20 mA current-loop signals after a single op-amp gain stage. The SAR architecture avoids the latency of delta-sigma converters, so each sample is available within a single SPI frame for deterministic control-loop timing.
Recommandé
Portable Battery-Powered Data Loggers
The ADC101S101CISDX/NOPB suits battery-powered data loggers thanks to its low supply current and wide 2.7 V to 5.25 V operating range that works directly from a single Li-ion cell (3.0-4.2 V). The 6-WSON (2.2 x 2.5 mm) footprint saves board area in handheld enclosures, and the SPI interface lets a low-power MCU wake only for conversions, putting the ADC back into high-impedance between samples. With 1 MSPS available, designers can over-sample slower signals to trade noise for power, averaging readings in firmware to extend battery life. Industrial temperature grade supports outdoor and vehicle-mounted logging deployments.
Recommandé
Motor Control Current and Voltage Feedback
For motor-control current and voltage feedback the ADC101S101CISDX/NOPB delivers deterministic SAR conversion timing that aligns to PWM switching periods without the pipeline delay of pipeline ADCs. Its 10-bit resolution is sufficient for current sensing on a shunt resistor in the low-side or high-side path when paired with a current-sense amplifier, and the 1 MSPS sample rate captures peak currents in FOC (field-oriented-control) loops running at 20 kHz PWM with up to 25 samples per electrical cycle. The 6-WSON footprint fits compact integrated power modules where every square millimeter of board counts.
Recommandé
Consumer Audio Front-End and Metering
The ADC101S101CISDX/NOPB is used in consumer audio front-ends and metering equipment where 10-bit resolution is adequate for VU-metering, peak detection, and simple level-sensing paths. Its SPI output feeds directly into DSP and microcontroller audio engines, while the small 6-WSON footprint enables multi-channel audio meter bars on a single PCB. With 0 V to VDD analog input range the part digitizes line-level audio after AC coupling and biasing, and the deterministic conversion timing aligns to audio frame rates for jitter-free level display.
Recommandé
Medical Device Signal Acquisition
Medical device signal acquisition benefits from the ADC101S101CISDX/NOPB's deterministic SAR conversion and 10-bit resolution for low-frequency bio-signal paths such as body-temperature, galvanic-skin-response, and pulse-oximeter photodiode current read-out. The 2.7 V to 5.25 V supply works with battery-powered portable designs and regulated medical-grade rails. SPI compatibility lets the part integrate with low-power medical MCUs while the 6-WSON footprint supports miniaturized wearable designs. Note: medical safety certification (IEC 60601) requires system-level qualification that this component alone does not provide.
Recommandé
Sensor Module and IoT Edge Devices
IoT edge devices and sensor modules leverage the ADC101S101CISDX/NOPB for digitizing analog sensor outputs at the network edge, where board area and power budget dominate. The 6-WSON (2.2 x 2.5 mm) package fits inside miniature sensor pods, while the 2.7 V to 5.25 V supply works with coin-cell boost outputs and 3.3 V system-on-chip rails. SPI output connects to common IoT radios and Wi-Fi/BLE modules, and the industrial temperature grade handles outdoor and industrial deployments. With 1 MSPS available the ADC supports both continuous sampling and event-triggered burst sampling for power-saving duty-cycled operation.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ADC101S101CISDX/NOPB — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ADC101S101CISD/NOPB | ADC101S021CISDX | ADC081S051CISDX/NOPB | ADC101S021CIMFX | AD7476AAKSZ-REEL |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| 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) class - same |
| Resolution | 10 bit | 10 bit | 10 bit | 8 bit | 10 bit | 12 bit |
| Max Sample Rate | 1 MSPS | 1 MSPS | 200 kSPS | 500 kSPS | 200 kSPS | 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 |
| Serial Interface | SPI / QSPI / MICROWIRE / DSP | SPI / QSPI / MICROWIRE / DSP | SPI / QSPI / MICROWIRE / DSP | SPI / QSPI / MICROWIRE / DSP | SPI / QSPI / MICROWIRE / DSP | SPI-compatible serial |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| RoHS / Lead-Free | Pb-free (NOPB), RoHS compliant | Pb-free (NOPB), RoHS compliant | Pb-free, RoHS compliant | Pb-free (NOPB), RoHS compliant | Pb-free, RoHS compliant | Pb-free (REEL), RoHS compliant |
| Approx. Unit Price (qty-1000, USD) | 1.51 | 1.48 | 1.40 | 1.20 | 1.42 | 3.10 |
Principaux différenciateurs
- Full 0.5-1 MSPS specification range (vs ADC081S051CISDX/NOPB)
- 10-bit resolution upgrade path on same footprint (vs ADC081S051CISDX/NOPB)
- Wide 2.7-5.25 V supply supports 3.3 V and 5 V systems (vs AD7476AAKSZ-REEL)
- Pb-free /NOPB termination for modern assembly (vs ADC101S021CIMFX)
Notes de conception
Place a 0.1 uF ceramic decoupling capacitor within 2-3 mm of the VDD pin and tie the exposed thermal pad to a clean analog ground plane with multiple vias. Keep digital traces (SCLK, DOUT, CS) routed away from the VIN trace to avoid digital-to-analog crosstalk. The analog ground and digital ground should connect at a single point near the ADC's GND pin to prevent ground-loop noise from corrupting the sample.
Source impedance seen at VIN should remain below a few hundred ohms during acquisition to avoid gain error and distortion. If driving from a higher-impedance sensor, buffer with a low-offset op-amp such as the OPA333. Keep VIN trace short and guard-ring it with analog ground to minimize leakage and noise pickup. The internal sample-and-hold requires the input to settle within the acquisition window before CS falls.
Common pitfalls: (1) omitting the CS falling-edge guard time before clocking SCLK - the part requires a brief acquisition window after CS goes low; (2) reading fewer than 16 SCLK cycles per conversion, which leaves incomplete data and can leave the ADC in an indeterminate state; (3) failing to solder the exposed thermal pad, which raises junction temperature and degrades accuracy; (4) using a single shared ground plane under a noisy switching regulator, which couples digital noise into the analog input - separate analog and digital ground islands joined at one point.
Estimated: at 1 MSPS continuous sampling with VDD = 5 V, the ADC101S101CISDX/NOPB draws roughly 4-6 mA, dissipating about 25 mW. For battery-powered designs, duty-cycle the conversions: take a burst of N samples then idle. Quiescent current drops to microamp levels when CS is held high, so power scaling is roughly linear with sampling duty cycle. Add a bulk 1 uF capacitor near VDD if the supply impedance is above 1 ohm at high frequency.
Informations de conformité
RoHS and REACH compliant per TI product page; /NOPB suffix confirms lead-free matte-tin finish. Not AEC-Q100 qualified (consumer/industrial grade only). Halogen-free status not explicitly stated in the verified web data.
