component
DRV421RTJR
Public Made by Adomby adom
Texas Instruments Current Sensors, QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 17d ago |
| viewers | 17d ago |
| drv421rtjr-etched.glb | 17d ago |
| drv421rtjr-etched.step | 17d ago |
| drv421rtjr-hero.glb | 17d ago |
| drv421rtjr-hero.overlay.json | 17d ago |
| drv421rtjr.glb | 17d ago |
| drv421rtjr.kicad_mod | 17d ago |
| drv421rtjr.kicad_sym | 17d ago |
| drv421rtjr.lbr | 17d ago |
| drv421rtjr.step | 17d ago |
| package.json | 17d ago |
| page.json | 17d ago |
| README.md | 17d ago |
DRV421RTJR
Texas Instruments · Current Sensors · QFN-20-EP(4x4)
DRV421RTJR from Texas Instruments, in a QFN-20-EP(4x4). 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 | GSEL0 | input | Gain and bandwidth selection input 0. |
| 2 | RSEL1 | input | Voltage reference mode selection input 1. |
| 3 | RSEL0 | input | Voltage reference mode selection input 0. |
| 4 | REFOUT | output | Voltage reference output, referenced to GND; the datasheet recommends a low-impedance, star-type connection to GND. |
| 5 | REFIN | input | Common-mode reference input for the shunt sense amplifier. |
| 6 | VOUT | output | Shunt sense amplifier output. |
| 7 | GND | power_in | Ground reference; connect all GND pins to a local ground plane. |
| 8 | VDD | power_in | Supply voltage, 3.0 V to 5.5 V; decouple both VDD pins with 1-µF ceramic capacitors placed as close as possible to the device. |
| 9 | VDD | power_in | Supply voltage, 3.0 V to 5.5 V; decouple both VDD pins with 1-µF ceramic capacitors placed as close as possible to the device. |
| 10 | GND | power_in | Ground reference; connect all GND pins to a local ground plane. |
| 11 | ICOMP2 | output | Output 2 of compensation coil driver. |
| 12 | ICOMP1 | output | Output 1 of compensation coil driver. |
| 13 | AINP | input | Noninverting input of shunt sense amplifier. |
| 14 | AINN | input | Inverting input of shunt sense amplifier. |
| 15 | OR | output | Shunt sense amplifier overrange indicator; open-drain, active-low output. |
| 16 | GND | power_in | Ground reference; connect all GND pins to a local ground plane. |
| 17 | GND | power_in | Ground reference; connect all GND pins to a local ground plane. |
| 18 | DEMAG | input | Degauss control input. |
| 19 | ER | output | Error flag; open-drain, active-low output. |
| 20 | GSEL1 | input | Gain and bandwidth selection input 1. |
| 21 | PowerPAD | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | QFN-20-EP(4x4) |
| Category | Magnetic Sensors |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
DRV421RTJR - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: QFN-20-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
drv421rtjr-etched.step/drv421rtjr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);drv421rtjr.step/drv421rtjr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (44 pp, sha256
dd983581ec2e1574, retrieved 2026-10-11, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).