ADC121C027CIMK Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments ADC121C027CIMK is a 12-bit successive approximation ADC with a single analog input channel, 1 µs conversion time, and up to 5.5 V input voltage range in a SOT-23-6 package. Its I2C interface and low power consumption suit portable and battery-powered sensor acquisition systems. Available through global distributors with competitive lead times and worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- ADC121C027CIMK Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12-bit SAR ADC with single-channel input and 1 µs maximum conversion time
- I2C serial interface simplifies connection to microcontrollers without dedicated SPI bus
- 5.5 V maximum analog input range accommodates a wide variety of sensor outputs
- Tiny SOT-23-6 package (JESD-30 R-PDSO-G6) for space-constrained PCB designs
Applications
The ADC121C027CIMK is commonly used in portable medical devices, environmental sensors, and industrial monitoring equipment that require 12-bit precision analog digitization over an I2C bus. Its single-channel architecture and compact SOT-23-6 package make it ideal for per-sensor digitization nodes where board area is limited. The 1 µs conversion time supports sampling rates up to several hundred ksps for real-time data acquisition in embedded control systems.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Analog Input Voltage-Max | 5.5V |
| Conversion Time-Max | 1 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e0 |
| Linearity Error-Max (EL) | 0.0244% |
| Number of Analog In Channels | 1 |
| Number of Bits | 12 |
| Number of Functions | 1 |
| Output Bit Code | BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Sample Rate | 0.1889MHz |
| Sample and Hold / Track and Hold | SAMPLE |
| Screening Level | TS 16949 |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.30 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADC121C027CIMK:
Converter, 12-Bit, 1 Func, 1 Channel, PDSO6
ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, CMOS, PDSO6
ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, 8 Bits Access, CMOS, PDSO6
ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, 8 Bits Access, CMOS, PDSO6
ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, 8 Bits Access, CMOS, PDSO8
ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, 8 Bits Access, CMOS, PDSO6
Frequently Asked Questions
What resolution and conversion speed does the ADC121C027CIMK provide for precision sensor digitization?
The ADC121C027CIMK delivers 12-bit resolution with a maximum conversion time of 1 µs. This combination provides 4096 quantization levels across the input range, suitable for sensing applications requiring better than 0.025% linearity accuracy in industrial and medical instrumentation.
How does the I2C interface of the ADC121C027CIMK simplify integration with microcontrollers?
The I2C interface requires only 2 wires (SDA and SCL) for communication, eliminating the need for a dedicated SPI bus with chip-select lines. This allows the ADC121C027CIMK to share a bus with other I2C peripherals on systems running at standard 100 kHz or fast 400 kHz I2C clock rates, reducing GPIO pin count on microcontrollers.
What analog input voltage range does the ADC121C027CIMK support and how does that affect sensor compatibility?
The device accepts analog input voltages up to 5.5 V maximum, making it compatible with sensors powered from both 3.3 V and 5 V supply rails without external level shifting. The full-scale range is set by the reference voltage, typically the supply voltage of 2.7 V to 5.5 V, covering most resistive bridge, thermocouple amplifier, and pressure sensor outputs directly.
When should a designer choose ADC121C027CIMK over a multi-channel ADC for a distributed sensor network?
Single-channel ADCs like the ADC121C027CIMK are preferred in distributed topologies where each sensor node has its own 12-bit digitizer placed close to the source, reducing noise from long analog traces. The SOT-23-6 package occupies less than 9 mm² of board space, making it cost-effective to place one ADC per sensor for simultaneous sampling across 8 or more channels without a multiplexer.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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