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WS18211

Public Made by Adom

by adom

wisesun RF Transceiver ICs, SSOP-16-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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WS18211

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ws18211.step / ws18211.glb are 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, 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