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MICRF220AYQS-TR

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

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MICRF220AYQS-TR

Microchip Tech · RF Transceiver ICs · QSOP-16-150mil

MICRF220AYQS-TR from Microchip Tech, in a QSOP-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 passive Reference resonator connection to the Pierce oscillator, may also be driven by an external reference of 200mVp-p to 1.5Vp-p maximum, with 7pF internal capacitance to GND in normal operation.
2 GNDRF power_in Ground connection for the ANT RF input, connect to PCB ground plane.
3 ANT input Internally AC-coupled RF signal input from the antenna; a matching network with an inductor to RF ground is recommended to improve ESD protection.
4 GNDRF power_in Ground connection for the ANT RF input, connect to PCB ground plane.
5 VDD power_in Positive supply for all chip functions (3.0V to 3.6V), bypass with 0.1µF capacitor as close to the pin as possible.
6 SQ input Squelch control logic-level input with 5µA typical internal pull-up; a logic LOW reduces random activity on DO when there is no RF input signal.
7 SEL0 input Demodulator filter bandwidth select logic input with 3µA typical internal pull-up, used together with SEL1.
8 SHDN input Shutdown control logic input with 5µA typical internal pull-up; LOW enables the device and HIGH places it in low-power shutdown.
9 GND power_in Ground connection for all chip functions except the RF input, connect to PCB ground plane.
10 DO output Demodulated data output, current-limited CMOS output in normal operation with a 25kΩ pull-down in shutdown.
11 SEL1 input Demodulator filter bandwidth select logic input with 3µA typical internal pull-up, used together with SEL0.
12 CTH passive Demodulation threshold voltage integration capacitor pin; connect a 0.1µF capacitor to GND for a stable slicing threshold.
13 CAGC passive AGC filter capacitor pin; connect a capacitor to GND, with value per the AGC Loop and CAGC section.
14 RSSI output Received signal strength indicator output, an inverted amplified version of the CAGC voltage with 250Ω typical output impedance.
15 NC unconnected No connect, leave this pin floating.
16 RO2 passive Reference resonator connection to the Pierce oscillator, with 7pF internal capacitance to GND in normal operation.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package QSOP-16-150mil
Category Radio Frequency Chip/Antenna
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
Supply Voltage (operating) VDD 3 3.6 V Operating Ratings 3
Ambient Temperature TA -40 105 °C Operating Ratings 3
Input DC Voltage (ANT, SQ, SEL0, SEL1, SHDN) operating -0.3 V upper limit VDD + 0.3V; Operating Ratings 3
Maximum Input RF Power (operating) 0 dBm Operating Ratings 3
Frequency Range 300 450 MHz Operating Ratings 3
Supply Voltage (absolute max) VDD 5 V 3
Input DC Voltage (ANT, SQ, SEL0, SEL1, SHDN) abs max -0.3 V upper limit VDD + 0.3V 3
Junction Temperature TJ 150 °C 3
Lead Temperature 300 °C soldering, 10sec 3
Storage Temperature -65 150 °C 3
Maximum Receiver Input Power 10 dBm 3
ESD Rating HBM 3 kV HBM 3
Reference Oscillator Input Range 0.2 1.5 VP-P External input, AC couple to RO1 3
CTH Leakage Current In CTH Hold Mode (+105ºC) 10 nA TA = +105ºC 4
DO Output Current source 300 µA As output source @ 0.8 VDD 4
Input High Voltage VIH 0.8 VDD SHDN, SEL0, SEL1, SQ; printed 0.8VDD 4
Input Low Voltage VIL 0.2 VDD SHDN, SEL0, SEL1, SQ; printed 0.2VDD 4
Output Voltage High VOH 0.8 VDD DO; printed 0.8VDD 4
Output Voltage Low VOL 0.2 VDD DO; printed 0.2VDD 4
Operating Supply Current 315MHz 4.3 mA Continuous Operation, fRF = 315MHz 3
Operating Supply Current 433.92MHz 6 mA Continuous Operation, fRF = 433.92MHz 3
Shutdown Current 0.1 µA VSHDN = VDD 3
Sensitivity 433.92MHz 1% BER -112.5 dBm 433.92MHz, VSEL1 = VSEL0 = 0V, BER = 1% 3
Sensitivity 433.92MHz 0.1% BER -110 dBm 433.92MHz, VSEL1 = VSEL0 = 0V, BER = 0.1% 3
Sensitivity 315MHz 1% BER -112.5 dBm 315MHz, VSEL1 = 0V, VSEL0 = 3.3V, BER = 1% 3
Sensitivity 315MHz 0.1% BER -110 dBm 315MHz, VSEL1 = 0V, VSEL0 = 3.3V, BER = 0.1% 3
Image Rejection 25 dB fIMAGE = fRF, 2fIF 3
IF Center Frequency 315MHz fIF 0.85 MHz fRF = 315MHz 3
IF Center Frequency 433.92MHz fIF 1.18 MHz fRF = 433.92MHz 3
-3dB IF Bandwidth 315MHz 235 kHz fRF = 315MHz 3
-3dB IF Bandwidth 433.92MHz 330 kHz fRF = 433.92MHz 3
CAGC Voltage Range low 1.15 V -40dBm RF input level 3
CAGC Voltage Range high 1.55 V -100dBm RF input level 3
Reference Oscillator Frequency 315MHz 9.81713 MHz fRF = 315 MHz 3
Reference Oscillator Frequency 433.92MHz 13.5231 MHz fRF = 433.92 MHz 3
Reference Buffer Input Impedance 1.6 kΩ RO1 when driven externally 3
Reference Oscillator Bias Voltage 1.15 V RO2 3
Reference Oscillator Source Current 300 µA VRO1 = 0V 3
CTH Source Impedance 9.81713MHz 165 kΩ fREF = 9.81713MHz 4
CTH Source Impedance 13.52313MHz 120 kΩ fREF = 13.52313MHz 4
CTH Leakage Current (+25ºC) 1 nA TA = +25ºC 4
DO Output Current sink 680 µA As output sink @ 0.2 VDD 4
Output Rise Time 600 ns 15pF load on DO pin, 0.1xVDD to 0.9xVDD 4
Output Fall Time 200 ns 15pF load on DO pin, 0.1xVDD to 0.9xVDD 4
RSSI DC Output Voltage low 0.5 V -110dBm RF input level 4
RSSI DC Output Voltage high 2 V -50dBm RF input level 4
RSSI Output Current 400 µA 5kΩ load to GND, -50dBm RF input level 4
RSSI Output Impedance 250 Ω 4
RSSI Response Time 10 ms VSEL0 = VSEL1 = 0V, RF input power stepped from no input to -50dBm 4

CAD (KiCad official)

  • Symbol: MICRF220AYQS-TR
  • Footprint: Package_SO:QSOP-16_3.9x4.9mm_P0.635mm
  • 3D model: QSOP-16-150mil (KiCad packages3D, STEP)
  • 3D model files: micrf220ayqs-tr-etched.step / micrf220ayqs-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); micrf220ayqs-tr.step / micrf220ayqs-tr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (20 pp, sha256 399ab8049bd8e4c3, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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