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Texas Instruments ADC082S021CIMM/NOPB
- Part No.:
- ADC082S021CIMM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC082S021CIMM/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,274
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Product details
Overview
ADC082S021CIMM/NOPB from Texas Instruments is a low-power, 8-bit, dual-channel successive-approximation ADC with serial SPI-compatible interface, 50–200 ksps sample rate range, ±0.04 LSB typical INL/DNL, and 49.6 dB typical SNR - used for precision analog monitoring in portable instrumentation and remote data acquisition systems.
For engineers reviewing the ADC082S021CIMM/NOPB datasheet, ADC082S021CIMM/NOPB pinout, ADC082S021CIMM/NOPB application, or ADC082S021CIMM/NOPB equivalent, key selection considerations include its dual-input multiplexing capability, 3–5.25 V single-supply operation, 16-cycle throughput timing, power-down mode (0.12 µW at 3 V), and VSSOP-8 package compatibility with space-constrained embedded designs.
Technical Context
The ADC082S021CIMM/NOPB implements a charge-redistribution DAC architecture with internal track-and-hold, supporting configurable channel selection (IN1/IN2) via an 8-bit control register loaded on DIN during each conversion frame. Its serial interface operates synchronously with SCLK, requiring integer multiples of 16 clock cycles per frame for full conversion + readout.
It features straight-binary output coding, supports SPI/QSPI/MICROWIRE protocols, and maintains specified performance across −40°C to +85°C while drawing only 0.45–1.7 mA supply current depending on voltage and sample rate - enabling direct integration into battery-powered sensor nodes without external reference or level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit with no missing codes - ensures monotonic response and deterministic code mapping over full input range. |
| Sample Rate Range | 50 ksps to 200 ksps - allows flexible trade-off between speed and power without requalification. |
| INL / DNL | ±0.04 LSB typical - enables high-accuracy DC measurements and low-gain signal conditioning. |
| SNR | 49.6 dB typical at 39.9 kHz - supports >7.9 ENOB for medium-fidelity sensor digitization. |
| Power Consumption | 1.6 mW at 3 V / 5.8 mW at 5 V - suitable for always-on monitoring with sub-mA system budget. |
| Supply Voltage | +2.7 V to +5.25 V - compatible with Li-ion, 3.3 V logic rails, and regulated 5 V supplies. |
| Power-Down Current | 0.12 µW at 3 V - extends battery life in intermittent-sampling applications. |
Pinout & Package
ADC082S021CIMM/NOPB is housed in an 8-lead VSSOP (DGK0008A) package - 2.3 mm × 2.0 mm footprint, 0.5 mm pitch, thermally enhanced for industrial ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low frame initiator: falling edge triggers track mode; rising edge places DOUT in high-Z and enters shutdown. |
| SCLK | Serial Clock | Master-controlled timing source: governs acquisition (first 3 cycles), conversion (next 13), and data transfer (MSB-first on DOUT). |
| DOUT | Digital Output | Tri-state serial data output: active only when CS is low; outputs 8-bit result starting on 5th SCLK falling edge. |
| DIN | Digital Input | Control register load input: accepts 8-bit address (ADD0–ADD2) on first 8 rising SCLK edges after CS fall to select next channel (IN1/IN2). |
| IN1 / IN2 | Analog Inputs | Single-ended inputs referenced to VA: 0 V to VA range; 33 pF input capacitance in track mode, 3 pF in hold mode. |
| VA | Analog Supply | Single positive supply (2.7–5.25 V): serves as both power rail and full-scale reference - requires local 1 µF + 0.1 µF bypassing. |
| GND | Analog Ground | Common return for analog and digital sections - must be low-impedance and separated from noisy digital ground planes. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel multiplexing | Hardware-selectable IN1/IN2 via 3-bit control register - eliminates need for external analog mux in dual-sensor systems. |
| Full-speed specification range | Guaranteed AC/DC performance across 50–200 ksps - avoids derating or retesting when adjusting sample rate in firmware. |
| Low-power shutdown mode | 0.12 µW consumption at 3 V - enables microcontroller-driven wake-up sampling without external enable circuitry. |
| SPI-compatible serial interface | No external level shifters needed for 3.3 V or 5 V microcontrollers - supports standard clock polarity/phase modes. |
| Internal track-and-hold | Acquisition time of 3 SCLK cycles - simplifies front-end design by removing requirement for external sample-hold amplifier. |
Applications
| Portable Instrumentation | Remote Sensor Nodes |
|---|---|
Use Scenario: Handheld multimeter or environmental logger acquiring temperature and humidity signals from two independent transducers. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing analog outputs of RTD and capacitive humidity sensors at 100 ksps with synchronized sampling. Use Value: Eliminates external multiplexer and reference IC, reducing BOM count and PCB area while maintaining <±0.1% measurement linearity. | Use Scenario: Wireless soil moisture and pH monitor deployed in agricultural fields, powered by solar-charged Li-ion battery. IC Role / Device Role / Timing Role: Low-quiescent ADC performing burst-mode sampling every 5 minutes, entering 0.12 µW shutdown between conversions. Use Value: Extends battery life beyond 2 years by minimizing active-time power draw and avoiding complex power-gating circuitry. |
| Industrial Control I/O Modules | Medical Vital Sign Monitors |
Use Scenario: DIN-rail mounted PLC analog input module converting 4–20 mA loop signals from pressure and flow sensors. IC Role / Device Role / Timing Role: Dual ADC channel interfacing isolated current-to-voltage converters, operating continuously at 200 ksps with daisy-chained SPI. Use Value: Enables simultaneous sampling of two process variables with matched gain/offset tracking, improving closed-loop control accuracy. | Use Scenario: Portable ECG/SpO₂ combo device acquiring lead-I differential voltage and photodiode current in clinical point-of-care settings. IC Role / Device Role / Timing Role: Dual ADC digitizing biopotential and optical sensor outputs at 100 ksps with 49.6 dB SNR for clean waveform reconstruction. Use Value: Meets IEC 60601-2-27 low-noise requirements without post-acquisition digital filtering, preserving real-time responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC082S051CIMM/NOPB | Same pinout and architecture, but rated for 200–500 ksps sample rate range - higher minimum clock frequency (1.6 MHz vs. 0.8 MHz). | Requires faster host controller clock and tighter timing margins; not drop-in for legacy 50 ksps designs. | Select when system demands >200 ksps sustained throughput and can support higher SCLK duty cycle stability. |
| ADC102S021CIMM/NOPB | 10-bit resolution, same 50–200 ksps range and VSSOP-8 package - adds 2 extra bits with ±0.25 LSB INL (max) and 1.5 mW higher power at 3 V. | Delivers higher dynamic range for precision sensor interfaces but increases host data handling overhead and power budget. | Choose when ENOB >8.5 bits is required and system firmware supports 10-bit word alignment and extended conversion latency. |
Compared with ADC082S021CIMM/NOPB, ADC082S051CIMM/NOPB trades guaranteed low-speed operation for higher throughput headroom, while ADC102S021CIMM/NOPB provides quantization resolution uplift at the cost of increased power and reduced noise margin - making ADC082S021CIMM/NOPB optimal for cost-sensitive, battery-operated 8-bit dual-sensor applications where 50–200 ksps suffices.
Availability
ADC082S021CIMM/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, remote sensor nodes, and industrial control I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADC082S021CIMM/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 for industrial, automotive, and consumer applications.
The ADC082S021CIMM/NOPB belongs to TI's precision SAR ADC portfolio designed specifically for low-power, multi-channel data acquisition in space- and energy-constrained embedded systems.
FAQ
What is the maximum sample rate supported by the ADC082S021CIMM/NOPB?
The ADC082S021CIMM/NOPB supports a maximum sample rate of 200 ksps, fully specified across the entire 50–200 ksps range. At this rate, it completes conversion and readout in 16 SCLK cycles - requiring a minimum SCLK frequency of 3.2 MHz. Performance parameters including INL, DNL, and SNR remain within datasheet limits up to 200 ksps, eliminating need for derating in high-throughput designs using ADC082S021CIMM/NOPB.
Does the ADC082S021CIMM/NOPB require an external voltage reference?
No, the ADC082S021CIMM/NOPB uses its analog supply voltage (VA) as the internal reference - full-scale range is 0 V to VA. This eliminates need for external reference ICs but requires clean, well-bypassed VA (1 µF + 0.1 µF capacitors within 1 cm). Any noise on VA directly modulates LSB size (VA/256), so dedicated LDO regulation is recommended for high-SNR applications using ADC082S021CIMM/NOPB.
How does channel selection work on the ADC082S021CIMM/NOPB?
Channel selection is controlled via a 3-bit address (ADD0–ADD2) loaded into the ADC082S021CIMM/NOPB's control register on DIN during each conversion frame. ADD1 = 0 selects IN1 (default), ADD1 = 1 and ADD0 = 1 selects IN2; other combinations are invalid. The selected channel is sampled in the *next* frame - enabling deterministic interleaved sampling without host timing uncertainty in ADC082S021CIMM/NOPB implementations.
What is the power consumption of the ADC082S021CIMM/NOPB in shutdown mode?
In shutdown mode (CS high), the ADC082S021CIMM/NOPB draws just 0.12 µW at +3 V and 0.35 µW at +5 V - corresponding to ~40 nA and ~70 nA supply current respectively. This ultra-low state is entered automatically when CS is deasserted and maintained until the next CS falling edge, making ADC082S021CIMM/NOPB ideal for wake-on-event architectures in battery-powered systems.
Is the ADC082S021CIMM/NOPB compatible with standard SPI interfaces?
Yes, the ADC082S021CIMM/NOPB supports SPI, QSPI, and MICROWIRE protocols with MSB-first, straight-binary output on DOUT and control register loading on DIN. It operates with standard clock polarity (CPOL = 0) and phase (CPHA = 0), requiring only CS, SCLK, DIN, and DOUT connections - no mode pins or configuration registers needed. Host MCU SPI peripherals can drive ADC082S021CIMM/NOPB directly without glue logic or software bit-banging.
ADC082S021CIMM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-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:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC082S021CIMM/NOPB FAQ
1.How can I place an order for ADC082S021CIMM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC082S021CIMM/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 ADC082S021CIMM/NOPB reliable?
The price and inventory of ADC082S021CIMM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC082S021CIMM/NOPB is usually 5 days.
3.What payment methods are accepted for ADC082S021CIMM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC082S021CIMM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC082S021CIMM/NOPB?
ADC082S021CIMM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC082S021CIMM/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 ADC082S021CIMM/NOPB?
For technical support, including ADC082S021CIMM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC082S021CIMM/NOPB requirements.
6.How does Aetrix verify that ADC082S021CIMM/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC082S021CIMM/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 ADC082S021CIMM/NOPB meets industry standards.
7.What is the process for return or replacement of ADC082S021CIMM/NOPB?
All ADC082S021CIMM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC082S021CIMM/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 ADC082S021CIMM/NOPB part is unused and in its original packaging.
Return procedure for ADC082S021CIMM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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