component
MICRF220AYQS-TR
Public Made by Adomby adom
Microchip Tech RF Transceiver ICs, QSOP-16-150mil. Pinout cross-checked by two models against the datasheet, 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
markdownMICRF220AYQS-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);micrf220ayqs-tr.step/micrf220ayqs-tr.glbare 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, primaryclaude-sonnet-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).