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Texas Instruments ADC101S021CIMF/NOPB
- Part No.:
- ADC101S021CIMF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADC101S021CIMF/NOPB.pdf
- Description:
- IC ADC 10BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,271
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Product details
Overview
ADC101S021CIMF/NOPB from Texas Instruments is a single-channel, 10-bit successive-approximation ADC with SPI/QSPI/MICROWIRE/DSP-compatible serial interface, 50–200 ksps sample rate range, ±0.14 LSB typical INL, 61.6 dB typical SNR, and operation from 2.7V to 5.25V supply. It serves as a low-power analog front-end for sensor signal digitization in portable instrumentation.
For engineers reviewing the ADC101S021CIMF/NOPB datasheet, ADC101S021CIMF/NOPB pinout, ADC101S021CIMF/NOPB application, or ADC101S021CIMF/NOPB equivalent, key selection criteria include guaranteed performance across 50–200 ksps (not just at one rate), 2.34 mW power at 3.6V, WSON-6/SOT-23-6 package compatibility, and straight-binary output timing alignment with standard microcontroller SPI peripherals.
Technical Context
The ADC101S021CIMF/NOPB implements a charge-redistribution DAC core with internal track-and-hold, enabling precise sampling of analog inputs up to VA (2.7–5.25V). Its conversion process is initiated by CS falling edge and synchronized to SCLK, requiring exactly 20 SCLK cycles per full frame (3 leading zeros + 10 data bits + 2 trailing zeros).
It supports true three-wire SPI communication with no external reference required-VA serves as both supply and full-scale reference-and features TRI-STATE SDATA output with 20 ns typical access time after SCLK falling edge, ensuring clean bus sharing in multi-peripheral systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit with no missing codes-guarantees monotonicity and deterministic code mapping for control-loop feedback. |
| Sample Rate Range | 50 ksps to 200 ksps-fully specified across entire range, eliminating interpolation uncertainty in variable-rate systems. |
| INL (typ) | ±0.14 LSB-enables <1% gain/offset error in 12-bit-equivalent system-level calibration without trimming. |
| SNR (typ) | 61.6 dB-supports >9.9 ENOB for clean digitization of audio-band and sensor signals up to 100 kHz. |
| Power @ 3.6V | 2.34 mW-allows battery operation >1 year in 100-ksps wake-up sensing nodes with 10 µA average current. |
| Supply Range | 2.7V to 5.25V-interoperates directly with 3.3V and 5V logic domains without level shifters. |
| Interface | SPI/QSPI/MICROWIRE/DSP compatible-connects natively to TI C2000, STM32, and NXP Kinetis MCU SPI peripherals. |
Pinout & Package
ADC101S021CIMF/NOPB is available in 6-lead WSON (NGF) and SOT-23 (DBV) packages-both RoHS-compliant, moisture-sensitive level 1, and thermally rated at θJA = 94°C/W (WSON) or 265°C/W (SOT-23).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VA | Analog supply input | Provides power and internal reference; must be bypassed with 1 µF + 0.1 µF capacitors within 1 cm for <62 dB SNR. |
| 2 - GND | Analog/digital ground return | Single ground plane required; center pad (WSON) must be soldered to GND for thermal and EMI performance. |
| 3 - VIN | Analog input | 0 V to VA range; 4 pF input capacitance and 500 Ω switch resistance demand low-Z source or anti-aliasing filter. |
| 4 - SCLK | Serial clock input | 25 kHz–20 MHz clock; controls conversion timing and data readout-no external oscillator needed. |
| 5 - SDATA | Digital data output | Tri-state, straight-binary output; data valid on falling SCLK edges; 20 ns access time enables 4 MHz SCLK operation. |
| 6 - CS | Chip select input | Falling edge initiates conversion; high state enables shutdown mode (2.6 µW power at 5.25V). |
Key Features
| Feature | Design Value |
|---|---|
| Full specification over 50–200 ksps | Eliminates derating assumptions-ENOB, INL, and SNR remain stable across entire operating sample rate range. |
| Single-supply operation (2.7–5.25V) | Removes need for dual-rail supplies or external voltage references-reduces BOM count and layout area. |
| Low-power shutdown mode (2.6 µW) | Enables ultra-low-duty-cycle sensing: 100-ksps acquisition every second draws only ~0.3 µA average current. |
| SPI-compatible 3-wire interface | Direct connection to standard MCU SPI peripherals without glue logic-reduces firmware complexity and GPIO usage. |
| Industrial temperature range (−40°C to +85°C) | Validated performance in harsh environments-no derating required for outdoor, motor-control, or factory-floor applications. |
Applications
| Portable Medical Sensors | Industrial Process Monitoring |
|---|---|
Use Scenario: Battery-powered pulse oximeter digitizing photodiode current with 100-ksps sampling. IC Role / Device Role / Timing Role: Primary A/D converter capturing analog sensor output; uses VA-referenced full-scale and SPI-synchronized readout. Use Value: 2.34 mW power at 3.6V extends battery life >18 months; ±0.14 LSB INL ensures SpO₂ calculation accuracy within clinical tolerance. | Use Scenario: PLC analog input module measuring 4–20 mA loop current via precision shunt resistor. IC Role / Device Role / Timing Role: Isolated front-end ADC interfacing to isolated SPI bus; operates at 50 ksps for slow-varying process variables. Use Value: Guaranteed 50–200 ksps spec allows same firmware across multiple update rates; 61.6 dB SNR resolves 12-bit-equivalent resolution in noisy factory environments. |
| Remote Environmental Data Loggers | Motor Control Current Feedback |
Use Scenario: Solar-powered weather station logging temperature, humidity, and barometric pressure every 10 seconds. IC Role / Device Role / Timing Role: Low-duty-cycle ADC activated by microcontroller wake-up; enters shutdown between samples. Use Value: 2.6 µW shutdown power minimizes quiescent drain; straight-binary output simplifies CRC-protected wireless transmission of raw 10-bit values. | Use Scenario: Inverter board measuring phase current using shunt resistor and amplifying with op-amp before ADC. IC Role / Device Role / Timing Role: High-fidelity current digitizer synchronized to PWM carrier; sampled at 200 ksps to capture ripple harmonics. Use Value: 200 ksps max rate captures 3rd harmonic of 30 kHz PWM; 9.9 ENOB preserves resolution for field-oriented control algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC101S051CIMF/NOPB | Same pinout and interface; specified for 200–500 ksps sample rate range. | Better suited for higher-throughput systems (e.g., digital power metering) where 200+ ksps is required continuously. | Select ADC101S051CIMF/NOPB only if sustained >200 ksps operation is mandatory-INL/SNR specs differ at lower rates. |
| ADS7822U | 8-pin SOIC; 12-bit resolution; SPI interface; 200 ksps max; requires external reference. | Used where higher resolution is prioritized over footprint and supply simplicity-adds reference IC and decoupling. | Choose ADS7822U when 12-bit linearity is critical and board space allows larger package and extra components. |
Compared with ADC101S051CIMF/NOPB, the ADC101S021CIMF/NOPB delivers tighter INL (±0.14 vs ±0.3 LSB typical) at 50–100 ksps but cannot sustain >200 ksps; versus ADS7822U, it trades 2-bit resolution for smaller size, lower cost, and integrated reference-ideal for cost- and space-constrained embedded sensors.
Availability
ADC101S021CIMF/NOPB is available at Aetrix Electronics and suitable for portable medical devices, industrial process monitoring, remote environmental data loggers, and motor control current feedback systems requiring stable component supply and long-term production continuity.
Supply support for ADC101S021CIMF/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with focus on reliability, energy efficiency, and system integration.
The ADC101S021CIMF/NOPB belongs to TI's precision SAR ADC family designed for low-power, space-constrained applications where integrated reference, small footprint, and guaranteed performance across variable sample rates are essential.
FAQ
What is the maximum guaranteed sample rate for ADC101S021CIMF/NOPB?
The ADC101S021CIMF/NOPB is fully specified up to 200 ksps-this is its maximum guaranteed sample rate. While the device can operate up to 1 Msps under certain conditions, only the 50–200 ksps range ensures all electrical characteristics (INL, SNR, DNL) meet datasheet limits across temperature and supply voltage. For designs requiring >200 ksps, consider ADC101S051CIMF/NOPB instead.
Does ADC101S021CIMF/NOPB require an external voltage reference?
No, ADC101S021CIMF/NOPB does not require an external voltage reference. It uses its VA supply pin (2.7V to 5.25V) as the internal reference-full-scale input is 0 V to VA. This eliminates external reference components and reduces system cost and board area, though supply noise directly impacts SNR performance.
What package options are available for ADC101S021CIMF/NOPB?
The ADC101S021CIMF/NOPB is offered in two RoHS-compliant packages: 6-lead WSON (NGF, 2 mm × 2 mm, 0.5 mm pitch) and 6-lead SOT-23 (DBV, 2.9 mm × 1.6 mm). Both share identical pinout and functionality; WSON provides superior thermal performance (θJA = 94°C/W) and smaller footprint, while SOT-23 offers broader assembly compatibility.
How does the power-down mode work on ADC101S021CIMF/NOPB?
ADC101S021CIMF/NOPB enters shutdown mode when CS is held high-consuming as low as 2.6 µW at 5.25V. Conversion resumes on the next CS falling edge. This mode is ideal for duty-cycled applications: for example, sampling once per second at 100 ksps draws only ~0.3 µA average current, extending battery life significantly in portable systems.
Is ADC101S021CIMF/NOPB pin-compatible with other devices in the ADC101Sxx family?
Yes, ADC101S021CIMF/NOPB is pin- and function-compatible with ADC101S051CIMF/NOPB and ADC101S101CIMF/NOPB per TI's documentation. All share identical 6-pin WSON/SOT-23 layout, pin functions, and SPI timing-allowing drop-in replacement when scaling sample rate requirements without PCB revision.
ADC101S021CIMF/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.7V ~ 5.25V
- Voltage - Supply, Digital:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC101S021CIMF/NOPB FAQ
1.How can I place an order for ADC101S021CIMF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC101S021CIMF/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADC101S021CIMF/NOPB reliable?
The price and inventory of ADC101S021CIMF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC101S021CIMF/NOPB is usually 5 days.
3.What payment methods are accepted for ADC101S021CIMF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC101S021CIMF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC101S021CIMF/NOPB?
ADC101S021CIMF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC101S021CIMF/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADC101S021CIMF/NOPB?
For technical support, including ADC101S021CIMF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC101S021CIMF/NOPB requirements.
6.How does Aetrix verify that ADC101S021CIMF/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC101S021CIMF/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADC101S021CIMF/NOPB meets industry standards.
7.What is the process for return or replacement of ADC101S021CIMF/NOPB?
All ADC101S021CIMF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC101S021CIMF/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADC101S021CIMF/NOPB part is unused and in its original packaging.
Return procedure for ADC101S021CIMF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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