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Texas Instruments ADC081C027CIMK/NOPB
- Part No.:
- ADC081C027CIMK/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
ADC081C027CIMK/NOPB.pdf
- Description:
- IC ADC 8BIT SAR TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:19,811
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Product details
Overview
ADC081C027CIMK/NOPB from Texas Instruments is an I²C-compatible, 8-bit successive-approximation ADC in SOT-6 package with pin-selectable slave address (ADDR), 2.7–5.5V supply range, 1 µs typical conversion time, ±0.2 LSB max INL/DNL, and integrated alert function disabled (replaced by ADDR input). It serves as a low-power analog monitor in portable medical instruments and battery-powered system supervisors.
For engineers reviewing the ADC081C027CIMK/NOPB datasheet, ADC081C027CIMK/NOPB pinout, ADC081C027CIMK/NOPB application, or ADC081C027CIMK/NOPB equivalent, key selection criteria include its SOT-6 footprint with ADDR-only interface (no ALERT), 3.4 MHz high-speed I²C support, automatic conversion mode for watchdog monitoring, and guaranteed no missing codes across industrial temperature range (−40°C to +105°C).
Technical Context
The ADC081C027CIMK/NOPB implements a charge-redistribution DAC architecture with internal track-and-hold, enabling full-scale input bandwidth up to 11 MHz at 5 V supply. Its conversion cycle begins on SDA ACK fall and completes in 1 µs, supporting throughput up to 188.9 ksps in high-speed I²C mode.
It operates in three I²C modes-standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz)-with open-drain SCL/SDA pins rated for ±8 kV HBM ESD protection. The tri-level ADDR pin sets bits A0–A1 of the 7-bit slave address, enabling three distinct I²C addresses on a shared bus without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit with no missing codes - ensures monotonic transfer function and deterministic digital output across full input range. |
| Conversion Time | 1 µs typical - enables real-time sampling of fast transients in power rail monitoring and sensor interfaces. |
| INL / DNL | ±0.2 LSB maximum - guarantees accurate voltage measurement within ±0.08% of full scale at 5 V reference. |
| Supply Range | +2.7 V to +5.5 V - supports direct interfacing with 3.3 V and 5 V microcontrollers and mixed-voltage systems. |
| Throughput Rate | 188.9 ksps maximum - delivers high sample density for peak detection and dynamic signal capture. |
| Power Consumption | 0.26 mW at 3 V / 22 ksps - enables multi-year operation on coin-cell batteries in portable diagnostics. |
| I²C Speed Support | Up to 3.4 MHz - reduces bus occupancy and allows dense multi-device configurations without timing bottlenecks. |
Pinout & Package
SOT-6 package (DDC) with gull-wing leads, 1.6 mm × 2.9 mm footprint, 0.95 mm height, and thermal resistance θJA = 250°C/W. Designed for reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Analog Input | Single-ended input referenced to GND; accepts 0 V to VA, requires <100 Ω source impedance for full AC performance. |
| GND | Ground | Common return for analog and digital circuitry; must be low-impedance and decoupled near VA pin. |
| VA | Supply & Reference | Single 2.7–5.5 V supply serving as both power rail and unbuffered ADC reference voltage. |
| SDA | I²C Bidirectional Data | Open-drain interface with 8 kV HBM ESD rating; requires external pull-up to VA. |
| SCL | I²C Clock Input | Open-drain clock input with 8 kV HBM ESD rating; synchronizes all register reads/writes. |
| ADDR | Address Selection | Tri-level input setting A0/A1 bits; selects one of three I²C slave addresses (0x50, 0x51, 0x52) without external resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Tri-level ADDR pin | Enables three unique I²C addresses in SOT-6 package-eliminates need for external address resistors or PCB trace cuts. |
| High-speed I²C interface | 3.4 MHz operation reduces transaction latency by >8× vs. standard mode, critical for real-time fault response. |
| Automatic conversion mode | Continuous background sampling frees host MCU resources while maintaining alert-ready state for out-of-range events. |
| Industrial temperature range | −40°C to +105°C operation ensures reliability in medical handhelds, automotive cabin sensors, and industrial controllers. |
| No missing codes guarantee | Ensures monotonicity across all 256 output codes-essential for closed-loop control and precision threshold detection. |
Applications
| Battery-Powered Medical Monitor | Industrial Power Rail Supervisor |
|---|---|
Use Scenario: Continuous monitoring of Li-ion cell voltage and body temperature in handheld diagnostic device. IC Role / Device Role / Timing Role: ADC081C027CIMK/NOPB performs autonomous 22 ksps sampling with alert-triggered interrupt on overvoltage or thermal excursion. Use Value: Enables 3-year battery life via 0.26 mW active power and sub-µW power-down mode, while delivering ±0.2 LSB accuracy for FDA-grade measurements. |
Use Scenario: Real-time tracking of 3.3 V and 5 V supply rails in PLC backplane with fault logging. IC Role / Device Role / Timing Role: ADC081C027CIMK/NOPB acts as dedicated rail monitor with programmable upper/lower limits and automatic min/max register capture. Use Value: Reduces host firmware overhead by 70% through automatic conversion mode and eliminates external comparator circuits. |
| Portable Test Equipment Front-End | IoT Edge Node Sensor Hub |
Use Scenario: Signal conditioning stage in handheld multimeter measuring DC voltage and current shunt drops. IC Role / Device Role / Timing Role: ADC081C027CIMK/NOPB digitizes analog inputs with 1 µs conversion and 188.9 ksps burst capability for transient capture. Use Value: Delivers 7.8 ENOB and 49 dB SINAD-meeting Class II handheld meter accuracy requirements without calibration drift compensation. |
Use Scenario: Centralized analog aggregation for temperature, humidity, and pressure sensors in smart building node. IC Role / Device Role / Timing Role: ADC081C027CIMK/NOPB serves as shared I²C ADC for multiple sensor channels using ADDR-based addressing. Use Value: Three-pin-selectable addresses allow up to three ADC081C027CIMK/NOPB units on one bus-cutting BOM cost vs. discrete channel solutions. |
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 |
|---|---|---|---|
| ADC081C021CIMK/NOPB | SOT-6 package with ALERT output instead of ADDR; identical conversion specs and I²C interface. | Used where hardware interrupt signaling (e.g., to wake MCU from sleep) is required instead of multi-address bus expansion. | Select ADC081C021CIMK/NOPB when out-of-range event notification must drive a dedicated interrupt line rather than rely on polled I²C status. |
| ADC101C027CIMK/NOPB | 10-bit resolution, same SOT-6 package and ADDR pin; 1 µs conversion time, ±0.3 LSB INL. | Required for higher-precision applications such as calibrated sensor outputs or 12-bit-equivalent dynamic range via oversampling. | Choose ADC101C027CIMK/NOPB when system accuracy demands >8-bit resolution but board space and I²C address flexibility remain constraints. |
Compared with ADC081C021CIMK/NOPB, the ADC081C027CIMK/NOPB trades ALERT functionality for tri-level address selection-enabling scalable multi-node sensing without GPIO overhead. Against ADC101C027CIMK/NOPB, it offers lower power and simpler firmware integration at the cost of 2-bit resolution, making it optimal for cost-sensitive, battery-constrained monitoring where ±0.4% full-scale accuracy suffices.
Availability
ADC081C027CIMK/NOPB is available at Aetrix Electronics and suitable for battery-powered medical monitors, industrial power rail supervisors, and portable test equipment requiring stable component supply across extended product lifecycles.
Supply support for ADC081C027CIMK/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 low-power design.
The ADC081C027CIMK/NOPB belongs to TI's ultra-low-power, pin-compatible ADC family targeting space-constrained, energy-sensitive applications-including portable instrumentation, system health monitoring, and IoT edge nodes.
FAQ
What is the function of the ADDR pin on the ADC081C027CIMK/NOPB?
The ADDR pin on the ADC081C027CIMK/NOPB is a tri-level digital input that sets bits A0 and A1 of the 7-bit I²C slave address, enabling three distinct addresses (0x50, 0x51, or 0x52) without external resistors. This allows up to three ADC081C027CIMK/NOPB devices to share a single I²C bus while maintaining individual register access-critical for compact multi-sensor designs where PCB real estate is constrained.
Does the ADC081C027CIMK/NOPB support high-speed I²C mode?
Yes, the ADC081C027CIMK/NOPB fully supports I²C high-speed mode up to 3.4 MHz with Cb ≤ 100 pF, achieving a maximum throughput rate of 188.9 ksps. Its SCL and SDA pins feature ±8 kV HBM ESD protection, allowing robust multi-board I²C bus extension without additional protection components-verified in TI's SNAS447C datasheet Section 7.5 and Table 4.
How does the automatic conversion mode work in the ADC081C027CIMK/NOPB?
In automatic conversion mode, the ADC081C027CIMK/NOPB continuously samples the VIN input at intervals set by Configuration Register bits D7–D5, storing minimum and maximum results in dedicated registers. This offloads monitoring tasks from the host MCU and enables true "watchdog" behavior-triggering alerts only when programmed thresholds are violated, reducing firmware polling overhead by up to 70% compared to manual conversion initiation.
What is the maximum analog input frequency supported by the ADC081C027CIMK/NOPB?
The ADC081C027CIMK/NOPB supports analog input frequencies up to 11 MHz at 5 V supply (full-power bandwidth, −3 dB point), enabled by its internal track-and-hold circuit and 1 µs conversion time. For accurate digitization of dynamic signals, TI specifies a maximum recommended source impedance of 100 Ω-confirmed in the Functional Description section and Figure 22 of the SNAS447C datasheet.
Is the ADC081C027CIMK/NOPB pin-compatible with other members of the ADC081C family?
Yes, the ADC081C027CIMK/NOPB is fully pin-compatible with the ADC081C021CIMK/NOPB in the SOT-6 package-differing only in the function of pin 4 (ADDR vs. ALERT). This allows direct substitution in existing layouts when address flexibility is prioritized over hardware interrupt capability, provided firmware is updated to configure the ADDR pin and read alert status via I²C instead of polling a GPIO.
ADC081C027CIMK/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 189k
- 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:
- TSOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC081C027CIMK/NOPB FAQ
1.How can I place an order for ADC081C027CIMK/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC081C027CIMK/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 ADC081C027CIMK/NOPB reliable?
The price and inventory of ADC081C027CIMK/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC081C027CIMK/NOPB is usually 5 days.
3.What payment methods are accepted for ADC081C027CIMK/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC081C027CIMK/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC081C027CIMK/NOPB?
ADC081C027CIMK/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC081C027CIMK/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 ADC081C027CIMK/NOPB?
For technical support, including ADC081C027CIMK/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC081C027CIMK/NOPB requirements.
6.How does Aetrix verify that ADC081C027CIMK/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC081C027CIMK/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 ADC081C027CIMK/NOPB meets industry standards.
7.What is the process for return or replacement of ADC081C027CIMK/NOPB?
All ADC081C027CIMK/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC081C027CIMK/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 ADC081C027CIMK/NOPB part is unused and in its original packaging.
Return procedure for ADC081C027CIMK/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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