component
WS18211
Public Made by Adomby adom
wisesun RF Transceiver ICs, SSOP-16-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownWS18211
wisesun · RF Transceiver ICs · SSOP-16-150mil
WS18211 from wisesun, in a SSOP-16-150mil. 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 | RO1 | input | Crystal oscillator input pin for the 13.52313 MHz (433.92 MHz) or 9.81713 MHz (315 MHz) reference crystal, which has 300 kΩ input impedance, ±20 ppm accuracy and a 15 pF load capacitance. |
| 2 | GNDRF | power_in | RF ground pin that must be connected to the board ground. |
| 3 | ANT | input | RF signal input from the antenna, internally AC-coupled; an inductor-to-ground matching network is recommended to improve ESD protection. |
| 4 | GNDRF | power_in | RF ground pin that must be connected to the board ground. |
| 5 | VDD | power_in | Power supply pin, DC 2 V to 5.5 V per the pin definition table. |
| 6 | SQ | input | Squelch control logic input: tie to ground to enable squelch, leave floating to disable squelch. |
| 7 | SEL0 | input | Logic control input with an active internal pull-up that, together with SEL1, selects the demodulator low-pass filter bandwidth. |
| 8 | SHDN | input | Chip shutdown pin, active low. |
| 9 | GND | power_in | Ground pin. |
| 10 | DO | output | Demodulated data output. |
| 11 | SEL1 | input | Logic control input with an active internal pull-up that, together with SEL0, selects the demodulator low-pass filter bandwidth. |
| 12 | OPTION0 | unconnected | Reserved pad (described as a reserved ground pad) that is left floating by default; leave unconnected in normal use. |
| 13 | OPTION1 | unconnected | Reserved pad (described as a reserved ground pad) that is left floating by default; leave unconnected in normal use. |
| 14 | RSSI | output | Received signal strength indicator analog output, DC 0.42 V to 1.68 V over -110 dBm to -40 dBm at about 18 mV/dB. |
| 15 | NC | unconnected | No internal connection. |
| 16 | RO2 | input | Crystal oscillator input pin, the second terminal of the reference crystal connection to RO1. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | wisesun |
| Package | SSOP-16-150mil |
| Category | RF And Wireless |
| Pins | 16 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Receive modulation duty cycle | 20 | 90 | % | 2 | |||
| Reference crystal frequency accuracy | -20 | 20 | ppm | 3 | |||
| Reference crystal input range | 0.2 | 1.5 | Vp-p | 3 | |||
| Demodulator filter bandwidth | 1 | 3 | Kbps | @433.92MHz, SEL0=0, SEL1=0 | 3 | ||
| Demodulator filter bandwidth | 1 | 4 | Kbps | @433.92MHz, SEL0=1, SEL1=0 | 3 | ||
| Demodulator filter bandwidth | 2 | 8 | Kbps | @433.92MHz, SEL0=0, SEL1=1 | 3 | ||
| Demodulator filter bandwidth | 5 | 19 | Kbps | @433.92MHz, SEL0=1, SEL1=1 | 3 | ||
| Demodulator filter bandwidth | 2 | 6 | Kbps | @315MHz, SEL0=0, SEL1=1 | 3 | ||
| Demodulator filter bandwidth | 4 | 18 | Kbps | @315MHz, SEL0=1, SEL1=1 | 3 | ||
| RSSI DC voltage range | 0.42 | 1.68 | V | -110dBm to -40dBm | 3 | ||
| Operating supply voltage (feature list) | 1.8 | 5.5 | V | Wide operating voltage range stated in feature list | 1 | ||
| Supply voltage VDD (pin description) | VDD | 2 | 5.5 | V | Pin 5 VDD power supply | 2 |
CAD (KiCad official)
- Symbol:
WS18211 - Footprint:
Package_SO:SSOP-16_5.3x6.2mm_P0.65mm - 3D model: SSOP-16-150mil (KiCad packages3D, STEP)
- 3D model files:
ws18211-etched.step/ws18211-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ws18211.step/ws18211.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: wisesun datasheet (4 pp, sha256
521545a964674f52, retrieved 2026-10-18, 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).