# ADC121C021CIMK

**Texas Instruments** · Analog To Digital Converters (ADC) · TSOT-23-6L

ADC121C021CIMK from Texas Instruments, in a TSOT-23-6L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VA | power_in | Power supply and unbuffered reference voltage, operating from +2.7 V to +5.5 V; VA must be free of noise and decoupled to GND. |
| 2 | GND | power_in | Ground for all on-chip circuitry. |
| 3 | VIN | power_in | Analog input that can range from GND to VA. |
| 4 | ALERT | output | Alert output, configurable as active high or active low; open-drain line that must be pulled up to VA with an external pull-up resistor. |
| 5 | SCL | input | I2C serial clock input used together with SDA to control data transfer; open-drain line that must be pulled up to VA with an external pull-up resistor. |
| 6 | SDA | bidirectional | I2C serial data bidirectional connection, clocked into or out of the internal 16-bit register with SCL; open-drain line that must be pulled up to VA with an external pull-up resistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSOT-23-6L |
| Category | Data Acquisition |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `ADC121C021CIMK`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-6`
- 3D model: TSOT-23-6L (KiCad packages3D, STEP)
- 3D model files: `adc121c021cimk-etched.step` / `adc121c021cimk-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `adc121c021cimk.step` / `adc121c021cimk.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/adc121c027) (47 pp, sha256 `f464ed23e391a581`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/adc121c021cimk-datasheet.pdf)