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Texas Instruments ADC081C021CIMMX/NOPB
- Part No.:
- ADC081C021CIMMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC081C021CIMMX/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,936
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Product details
Overview
ADC081C021CIMMX/NOPB from Texas Instruments is an I²C-compatible, 8-bit successive-approximation ADC with alert output, operating from +2.7V to +5.5V supply and delivering 188.9 ksps max throughput. It integrates internal track-and-hold, supports standard/fast/high-speed I²C modes (up to 3.4 MHz), and features programmable out-of-range alert for system monitoring applications.
For engineers reviewing the ADC081C0221CIMMX/NOPB datasheet, ADC081C021CIMMX/NOPB pinout, ADC081C021CIMMX/NOPB application, or ADC081C021CIMMX/NOPB equivalent, key selection considerations include its SOT-6 package with dedicated ALERT pin, ±0.2 LSB INL/DNL accuracy, automatic conversion mode, 1 µs conversion time, and industrial temperature range (−40°C to +105°C).
Technical Context
The ADC081C021CIMMX/NOPB implements a charge-redistribution DAC architecture with internal track-and-hold, enabling accurate sampling of input signals up to 11 MHz full-power bandwidth. Its analog input range is 0 V to VA, referenced to the same supply used for digital interface logic.
I²C communication uses open-drain SDA/SCL pins with 8 kV HBM ESD protection, supporting three speed modes and requiring external pull-up resistors. Alert functionality is implemented via an open-drain output configurable as active-high or active-low, triggered by violation of user-defined upper/lower limit registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits with no missing codes - guarantees monotonic transfer function and deterministic code transitions across full scale. |
| Conversion Time | 1 µs typical - enables high-throughput sampling at up to 188.9 ksps in high-speed I²C mode. |
| INL / DNL | ±0.2 LSB maximum - ensures linearity error remains below 0.08% of full scale for precision measurement. |
| Supply Range | +2.7 V to +5.5 V - allows direct interfacing with 3.3 V or 5 V systems without level-shifting. |
| Power Consumption | 0.26 mW at 3 V / 22 ksps - ultra-low power suitable for battery-operated portable instruments. |
| I²C Speed Modes | Standard (100 kHz), Fast (400 kHz), High-Speed (3.4 MHz) - provides flexibility for bus loading and timing budget constraints. |
| Alert Function | Dedicated open-drain ALERT pin - generates hardware interrupt on out-of-range condition without host polling. |
Pinout & Package
SOT-6 package (DDC) with 1.6 mm × 2.9 mm footprint and 0.95 mm height; lead-free, RoHS-compliant, and rated for −40°C to +105°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VA) | Supply & Reference Input | Single-supply rail serving as both analog power and unbuffered reference; must be low-noise and decoupled to GND. |
| 2 (GND) | Analog/Digital Ground | Common return path for all internal circuitry; requires low-impedance connection to system ground plane. |
| 3 (VIN) | Analog Input | Single-ended input accepting 0 V to VA range; input impedance dominated by 30 pF sampling capacitor and 500 Ω switch RON. |
| 4 (ALERT) | Digital Output | Open-drain interrupt output; requires external pull-up to VA; asserts when VIN exceeds programmed limits. |
| 5 (SCL) | I²C Clock Input | Open-drain clock line with 8 kV HBM ESD rating; must be pulled up externally; controls data synchronization. |
| 6 (SDA) | I²C Data I/O | Open-drain bidirectional data line with 8 kV HBM ESD rating; shares bus with other I²C devices. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Conversion Mode | Hardware watchdog function continuously monitors VIN and updates min/max registers without CPU intervention. |
| Programmable Alert Thresholds | Independent upper and lower limit registers allow dynamic out-of-range detection for fault-safe system monitoring. |
| Three I²C Speed Modes | Supports legacy 100 kHz buses, mainstream 400 kHz designs, and high-bandwidth 3.4 MHz implementations. |
| Low-Power Power-Down | Consumes <1 µW in PD1 mode - ideal for intermittent sensing in energy-constrained edge nodes. |
| Industrial Temperature Range | Guaranteed operation from −40°C to +105°C - suitable for automotive cabin, industrial PLC, and medical equipment environments. |
Applications
| System Monitoring | Peak Detection |
|---|---|
Use Scenario: Real-time voltage supervision in microcontroller-based power management units, detecting overvoltage/undervoltage events on DC rails or sensor supplies. IC Role / Device Role / Timing Role: ADC081C021CIMMX/NOPB acts as autonomous analog monitor with hardware alert trigger, eliminating continuous polling overhead. Use Value: Reduces MCU wake-up frequency and firmware complexity while ensuring sub-millisecond response to critical excursions. | Use Scenario: Capturing transient voltage peaks in battery-powered test fixtures or portable oscilloscope front-ends. IC Role / Device Role / Timing Role: ADC081C021CIMMX/NOPB performs high-speed sampling (188.9 ksps) and stores peak values in internal Highest/Lowest Conversion Registers. Use Value: Enables compact, low-cost peak-hold functionality without external memory or fast microcontroller peripherals. |
| Portable Instruments | Medical Instruments |
Use Scenario: Battery voltage and sensor signal acquisition in handheld multimeters, environmental sensors, or wearable health monitors. IC Role / Device Role / Timing Role: ADC081C021CIMMX/NOPB serves as primary analog front-end digitizer with integrated reference and I²C interface. Use Value: Minimizes BOM count and PCB area via single-chip solution with <0.26 mW active power at 3 V. | Use Scenario: Vital sign signal conditioning in patient monitors, infusion pump pressure sensing, or portable ECG lead-off detection. IC Role / Device Role / Timing Role: ADC081C021CIMMX/NOPB provides reliable, low-noise digitization of biopotential or transducer outputs in safety-critical contexts. Use Value: Meets medical-grade linearity (±0.2 LSB INL) and operates across full industrial temperature range for clinical reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC081C027CIMMX/NOPB | SOT-6 package with ADDR pin instead of ALERT; supports 3 pin-selectable I²C addresses vs. fixed address on ADC081C021CIMMX/NOPB. | Used where multi-device I²C addressing is required but hardware alert interrupt is unnecessary. | Select ADC081C027CIMMX/NOPB when address flexibility outweighs need for autonomous alert signaling. |
| ADC101C021CIMMX/NOPB | 10-bit resolution, identical SOT-6 package and pinout, same I²C interface and alert function, but higher INL (±0.3 LSB max) and lower max throughput (188.9 ksps unchanged). | Preferred for applications requiring improved dynamic range (e.g., higher-precision sensor interfaces) without layout change. | Choose ADC101C021CIMMX/NOPB when 10-bit resolution is mandatory and SOT-6 footprint compatibility is required. |
Compared with ADC081C027CIMMX/NOPB, ADC081C021CIMMX/NOPB prioritizes autonomous fault detection over address scalability; compared with ADC101C021CIMMX/NOPB, it trades resolution for lower cost and identical timing behavior in alert-driven monitoring loops.
Availability
ADC081C021CIMMX/NOPB is available at Aetrix Electronics and suitable for system monitoring, portable instrumentation, medical device design, and industrial embedded control requiring stable component supply and long-term lifecycle support.
Supply support for ADC081C021CIMMX/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 ICs.
The ADC081C021CIMMX/NOPB belongs to TI's low-power, I²C-compatible ADC family designed for space-constrained, battery-sensitive applications requiring autonomous analog monitoring and minimal firmware overhead.
FAQ
What is the maximum I²C clock frequency supported by ADC081C021CIMMX/NOPB?
ADC081C021CIMMX/NOPB supports I²C high-speed mode up to 3.4 MHz when bus capacitance is ≤100 pF, and up to 1.7 MHz at 400 pF. Standard (100 kHz) and fast (400 kHz) modes are also fully supported, with timing parameters guaranteed across −40°C to +105°C.
Does ADC081C021CIMMX/NOPB require an external reference voltage?
No, ADC081C021CIMMX/NOPB uses its VA supply pin as both power source and unbuffered reference. The analog input range is 0 V to VA, and VA must be low-noise and properly decoupled to ensure specified INL/DNL performance.
How does the ALERT pin function in ADC081C021CIMMX/NOPB?
The ALERT pin on ADC081C021CIMMX/NOPB is an open-drain output that asserts low (or high, depending on configuration) when the latest conversion result falls outside user-programmed upper or lower limit registers. It operates independently in automatic conversion mode without host polling.
What is the conversion time and throughput rate of ADC081C021CIMMX/NOPB?
ADC081C021CIMMX/NOPB has a typical conversion time of 1 µs. Maximum throughput reaches 188.9 ksps in high-speed I²C mode (3.4 MHz), scaling down to 22.2 ksps at 400 kHz and 5.56 ksps at 100 kHz due to interface overhead.
Is ADC081C021CIMMX/NOPB pin-compatible with other members of the ADC081Cxx family?
Yes - ADC081C021CIMMX/NOPB in SOT-6 is pin-compatible with ADC081C027CIMMX/NOPB (same package, different pin function), and functionally compatible with ADC101C021CIMMX/NOPB and ADC121C021CIMMX/NOPB, which share identical SOT-6 pinout and register map but differ in resolution and performance specs.
ADC081C021CIMMX/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):
- 188.9k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- I2C
- 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 ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC081C021CIMMX/NOPB FAQ
1.How can I place an order for ADC081C021CIMMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC081C021CIMMX/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 ADC081C021CIMMX/NOPB reliable?
The price and inventory of ADC081C021CIMMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC081C021CIMMX/NOPB is usually 5 days.
3.What payment methods are accepted for ADC081C021CIMMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC081C021CIMMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC081C021CIMMX/NOPB?
ADC081C021CIMMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC081C021CIMMX/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 ADC081C021CIMMX/NOPB?
For technical support, including ADC081C021CIMMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC081C021CIMMX/NOPB requirements.
6.How does Aetrix verify that ADC081C021CIMMX/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC081C021CIMMX/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 ADC081C021CIMMX/NOPB meets industry standards.
7.What is the process for return or replacement of ADC081C021CIMMX/NOPB?
All ADC081C021CIMMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC081C021CIMMX/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 ADC081C021CIMMX/NOPB part is unused and in its original packaging.
Return procedure for ADC081C021CIMMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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