component
VT1101R
Public Made by Adomby adom
VIBRATION RFID ICs, QFN-20(4x4). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownVT1101R
VIBRATION · RFID ICs · QFN-20(4x4)
VT1101R from VIBRATION, in a QFN-20(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SCK | input | SPI serial interface clock input pin; operates at maximum frequency of 6.5 MHz |
| 2 | GDO1 | tri_state | SPI serial interface data output (SO); tri-state output that shares SO function with SPI interface |
| 3 | GDO2 | output | Digital test output pin; programmable general-purpose digital output or test signal |
| 4 | DV33 | power_in | Digital power supply pin; supply voltage 2.4-3.6V nominal 3.3V |
| 5 | VOUT18 | power_out | Digital LDO output pin; 1.8V regulated output from on-chip digital low-dropout regulator |
| 6 | GDO0 | output | Analog test output pin; programmable general-purpose output with default XOSC/192 clock frequency |
| 7 | CSN | input | SPI chip select input pin; active low signal for enabling SPI transactions |
| 8 | AV33 | power_in | Analog power supply pin; 3.3V supply voltage for analog circuits |
| 9 | XI | input | Crystal oscillator input pin; connects to external 26 MHz crystal oscillator with load capacitance 8-20 pF |
| 10 | XO | output | Crystal oscillator output pin; connects to external 26 MHz crystal oscillator with load capacitance 8-20 pF |
| 11 | AV33 | power_in | Analog power supply pin; 3.3V supply voltage for analog circuits |
| 12 | PA_OUT | output | Power amplifier RF output pin; provides transmit RF output with output impedance 35−j3.4 Ω at 433 MHz |
| 13 | RF_INP | input | RF receiver differential input (positive); receives RF signals with differential input impedance 180−j110 Ω at 433 MHz |
| 14 | RF_INN | input | RF receiver differential input (negative); receives RF signals with differential input impedance 180−j110 Ω at 433 MHz |
| 15 | AV33 | power_in | Analog power supply pin; 3.3V supply voltage for analog circuits |
| 16 | GND | power_in | Analog ground reference pin |
| 17 | RFE | passive | RF impedance reference resistor connection pin; external component connection for RF matching network |
| 18 | DV33 | power_in | Digital power supply pin; supply voltage 2.4-3.6V nominal 3.3V |
| 19 | GND | power_in | Ground reference pin |
| 20 | MOSI | input | SPI serial interface data input pin; receives serial data from master microcontroller |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | VIBRATION |
| Package | QFN-20(4x4) |
| Category | RF And Wireless |
| Pins | 21 |
CAD (KiCad official)
- Symbol:
VT1101R - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: QFN-20(4x4) (KiCad packages3D, STEP)
- 3D model files:
vt1101r-etched.step/vt1101r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);vt1101r.step/vt1101r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: VIBRATION datasheet (36 pp, sha256
de7ca298129a9570, retrieved 2026-09-22, 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).