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Texas Instruments ADC081S101CIMFX/NOPB
- Part No.:
- ADC081S101CIMFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADC081S101CIMFX/NOPB.pdf
- Description:
- IC ADC 8BIT SAR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,076
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Product details
Overview
ADC081S101CIMFX/NOPB from Texas Instruments is a single-channel, 8-bit successive-approximation ADC with SPI/QSPI/MICROWIRE-compatible serial interface, operating at 0.5–1 Msps sample rates, 2.7V–5.25V supply, and delivering 49.7 dB SNR and ±0.05 LSB INL (typ) - used for precision analog monitoring in portable instrumentation and remote data acquisition systems.
For engineers reviewing the ADC081S101CIMFX/NOPB datasheet, ADC081S101CIMFX/NOPB pinout, ADC081S101CIMFX/NOPB application, or ADC081S101CIMFX/NOPB equivalent, key selection considerations include guaranteed performance across 500 ksps–1 Msps, low-power shutdown mode (2.5 µW @ 5V), straight-binary output format, and compatibility with microprocessor/DSP host interfaces requiring minimal board space.
Technical Context
The ADC081S101CIMFX/NOPB implements a charge-redistribution DAC core with internal track-and-hold, enabling precise sampling of analog inputs up to VA (2.7V–5.25V). Its conversion timing is fully synchronized to the SCLK falling edge, with aperture jitter of 30 ps and acquisition time of 350 ns max.
It operates in two modes: normal (CS low, active conversion and serial readout) and shutdown (CS high, 2.5 µW quiescent power). The SDATA output is tri-state controlled by CS, and supports 16-cycle frame structure: three leading zeros, eight MSB-first data bits, and four trailing zeros.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes with no missing codes guaranteed. |
| Sample Rate Range | 500 ksps to 1 Msps - fully specified performance across full range, not just at single rate. |
| INL / DNL | ±0.05 LSB / ±0.07 LSB (typ) - ensures monotonicity and accurate code spacing for control-loop feedback. |
| SNR | 49.7 dB (typ) - enables ~7.9 ENOB for clean digitization of sensor-level signals up to 100 kHz. |
| Power Consumption | 2.0 mW @ 3V / 10.0 mW @ 5V (normal); 2.5 µW @ 5V (shutdown) - supports battery-powered operation with dynamic power scaling. |
| Supply Voltage | 2.7V to 5.25V - allows direct interfacing with 3.3V or 5V logic domains without level-shifting. |
| Serial Interface | SPI/QSPI/MICROWIRE/DSP compatible - simplifies integration with common microcontrollers and DSPs. |
Pinout & Package
ADC081S101CIMFX/NOPB is packaged in a 6-lead WSON (2.0 mm × 2.0 mm, 0.5 mm pitch) with exposed thermal pad - optimized for compact PCB layouts and thermal performance (θJA = 94°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VA | Analog supply input | Provides reference and power for analog core; must be bypassed with 1 µF + 0.1 µF capacitors within 1 cm. |
| CS | Chip select input | Falling edge initiates conversion and enables SDATA; high state forces shutdown mode. |
| GND | Analog/digital ground | Common return for VA, VIN, and digital I/O; center pad must be connected to GND for thermal and EMI integrity. |
| SDATA | Serial data output | Tri-state, MSB-first straight-binary output; driven only when CS is low and during SCLK falling edges. |
| VIN | Analog input | Single-ended input referenced to GND, range 0 V to VA; input capacitance is 4 pF (hold) / 30 pF (track). |
| SCLK | Serial clock input | Controls conversion timing and data readout; supports 25 kHz–20 MHz; duty cycle 40–60%. |
Key Features
| Feature | Design Value |
|---|---|
| Full-range sample-rate specification | Performance guaranteed from 500 ksps to 1 Msps - eliminates need for derating or interpolation in variable-throughput designs. |
| Low-power shutdown mode | 2.5 µW quiescent power at 5V - enables microamp-level system sleep states without external power gating. |
| Supply-voltage-independent digital I/O | Digital pins tolerate −0.3V to +5.25V regardless of VA - permits direct interfacing with 1.8V/3.3V/5V hosts without level shifters. |
| Internal track-and-hold with low aperture jitter | 30 ps aperture jitter - preserves signal integrity for AC-coupled sensor inputs up to 100 kHz. |
| No missing codes | Guaranteed monotonic transfer function - critical for closed-loop control and safety-critical monitoring applications. |
Applications
| Portable Medical Sensors | Industrial Remote I/O Modules |
|---|---|
|
Use Scenario: Battery-powered wearable ECG front-end digitizing biopotential signals at ≤100 kHz. IC Role / Device Role / Timing Role: Single-channel analog monitor converting conditioned electrode outputs into 8-bit digital stream via SPI for MCU processing. Use Value: 49.7 dB SNR and 350 ns acquisition time enable accurate R-wave detection; 2.0 mW @ 3V extends battery life in continuous-monitoring mode. |
Use Scenario: DIN-rail mounted sensor node acquiring temperature, pressure, and humidity from field transducers. IC Role / Device Role / Timing Role: Low-cost, low-power ADC interfacing multiple analog sensors to an ARM Cortex-M host over SPI bus. Use Value: Pin-compatible family scalability (e.g., ADC101S101/ADC121S101) allows resolution upgrades without layout change; −40°C to +85°C rating ensures field reliability. |
| Test & Measurement Front Ends | Smart Energy Metering Subsystems |
|
Use Scenario: Handheld multimeter capturing transient voltage/current waveforms during diagnostics. IC Role / Device Role / Timing Role: High-speed sampling ADC synchronizing to internal timer for triggered capture of 1 Msps bursts. Use Value: 1 Msps throughput with guaranteed DNL ±0.07 LSB ensures waveform fidelity; 16-cycle deterministic timing simplifies firmware buffer management. |
Use Scenario: Auxiliary ADC in polyphase energy meter measuring auxiliary parameters (e.g., neutral current, temperature compensation). IC Role / Device Role / Timing Role: Secondary analog monitor providing calibration and environmental context to primary metrology IC. Use Value: 2.7V–5.25V supply range matches meter's internal LDO rails; shutdown mode reduces system standby power below 5 µW. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC081S051CIMFX/NOPB | Specified for 200–500 ksps range; identical pinout and interface; lower max sample rate. | Better suited for cost-sensitive, medium-speed applications (e.g., basic sensor polling) where 1 Msps is unnecessary. | Select ADC081S051CIMFX/NOPB when system throughput requirements are ≤500 ksps and lower power at reduced speed is prioritized. |
| ADC081S021CIMFX/NOPB | Specified for 50–200 ksps range; same package and serial protocol; higher noise floor at low speeds. | Targeted at ultra-low-power, low-bandwidth monitoring (e.g., battery voltage logging, ambient light sensing). | Choose ADC081S021CIMFX/NOPB for sub-200 ksps applications where minimum active current (0.6 mA @ 3.6V) outweighs speed needs. |
Compared with ADC081S051CIMFX/NOPB and ADC081S021CIMFX/NOPB, the ADC081S101CIMFX/NOPB provides the highest guaranteed throughput (1 Msps) and best dynamic performance (49.7 dB SNR) within the pin-compatible ADC081S family - making it optimal for real-time signal capture where speed and fidelity are jointly constrained.
Availability
ADC081S101CIMFX/NOPB is available at Aetrix Electronics and suitable for portable medical devices, industrial remote I/O modules, and test equipment requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for ADC081S101CIMFX/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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and industrial-grade IC design.
The ADC081S101CIMFX/NOPB belongs to TI's precision SAR ADC product line, engineered for low-power, high-reliability analog monitoring in space-constrained, battery-operated, and harsh-environment applications.
FAQ
What is the maximum guaranteed sample rate for ADC081S101CIMFX/NOPB?
The ADC081S101CIMFX/NOPB is fully specified for operation up to 1 Msps across its entire industrial temperature range (−40°C to +85°C) and supply range (2.7V–5.25V). This is not a typical-only rating - all key specifications including INL, DNL, and SNR are ensured at 1 Msps per the SNAS310D datasheet revision January 2014.
Does ADC081S101CIMFX/NOPB require an external reference voltage?
No. ADC081S101CIMFX/NOPB uses its VA supply pin as the analog reference - the full-scale input range is 0 V to VA. This eliminates need for external reference components but requires clean, well-bypassed VA supply to maintain 49.7 dB SNR performance; decoupling with 1 µF + 0.1 µF capacitors within 1 cm of VA is mandatory.
How does the power-down mode work on ADC081S101CIMFX/NOPB?
ADC081S101CIMFX/NOPB enters shutdown mode when CS is held high; quiescent current drops to 2.5 µW at 5V. It resumes normal operation on the next CS falling edge, with 1 µs power-up time. No initialization sequence is required - the device is immediately ready for conversion after wake-up.
Is ADC081S101CIMFX/NOPB pin-compatible with other members of the ADC081S family?
Yes. ADC081S101CIMFX/NOPB shares identical 6-pin WSON/SOT-23 pinout and serial interface timing with ADC081S021CIMFX/NOPB and ADC081S051CIMFX/NOPB. All three support the same 3-zero / 8-data / 4-zero SDATA frame and respond identically to CS/SCLK control - enabling drop-in resolution or speed upgrades.
What is the input impedance and drive requirement for VIN on ADC081S101CIMFX/NOPB?
VIN presents 30 pF capacitance in track mode and 4 pF in hold mode, with series resistance dominated by internal switch (≈500 Ω). To avoid distortion, the source impedance should be ≤1 kΩ for DC accuracy and ≤100 Ω for AC signals above 10 kHz; an anti-aliasing filter is recommended for dynamic inputs.
ADC081S101CIMFX/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:
- 8
- Sampling Rate (Per Second):
- 1M
- 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:
- -
ADC081S101CIMFX/NOPB FAQ
1.How can I place an order for ADC081S101CIMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC081S101CIMFX/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 ADC081S101CIMFX/NOPB reliable?
The price and inventory of ADC081S101CIMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC081S101CIMFX/NOPB is usually 5 days.
3.What payment methods are accepted for ADC081S101CIMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC081S101CIMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC081S101CIMFX/NOPB?
ADC081S101CIMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC081S101CIMFX/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 ADC081S101CIMFX/NOPB?
For technical support, including ADC081S101CIMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC081S101CIMFX/NOPB requirements.
6.How does Aetrix verify that ADC081S101CIMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC081S101CIMFX/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 ADC081S101CIMFX/NOPB meets industry standards.
7.What is the process for return or replacement of ADC081S101CIMFX/NOPB?
All ADC081S101CIMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC081S101CIMFX/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 ADC081S101CIMFX/NOPB part is unused and in its original packaging.
Return procedure for ADC081S101CIMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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