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CMT2219A-EQR
Public Made by Adomby adom
HopeRF Micro electronics RF Transceiver ICs, QFN-16-EP(3x3). 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
markdownCMT2219A-EQR
HopeRF Micro electronics · RF Transceiver ICs · QFN-16-EP(3x3)
CMT2219A-EQR from HopeRF Micro electronics, in a QFN-16-EP(3x3). 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 | CSB | input | 4-wire SPI chip select input, active low, internally pulled high. |
| 2 | SDA | bidirectional | 4-wire SPI data input and output. |
| 3 | SCL | input | 4-wire SPI clock input, internally pulled low. |
| 4 | FCSB | input | 4-wire SPI FIFO select input, active low; leave floating when programming the EEPROM, internally pulled high. |
| 5 | GPO4 | output | General purpose output; default DOUT, selectable as INT1, INT2 or DCLK. |
| 6 | GPO3 | output | General purpose output; default CLKO, selectable as INT1, INT2 or DOUT. |
| 7 | XOUT | output | Crystal oscillator output. |
| 8 | XIN | input | Crystal oscillator input or external 26 MHz reference clock input, which requires a coupling capacitor and 0.3 to 0.7 V peak-to-peak amplitude. |
| 9 | GPO2 | output | General purpose output; default INT1, selectable as INT2 or DCLK. |
| 10 | GPO1 | output | General purpose output; default nRSTO, selectable as INT1, INT2 or DOUT. |
| 11 | VCOP | bidirectional | VCO tank connection, to be connected to an external inductor. |
| 12 | VCON | bidirectional | VCO tank connection paired with VCOP; the pin-table row has no description text in the extracted datasheet. |
| 13 | GND | power_in | Ground. |
| 14 | RFIN | input | RF signal input to the LNA. |
| 15 | GND | power_in | Ground. |
| 16 | VDD | power_in | Power supply input; operating supply is 1.8 V to 3.6 V (Table 2, page 6). |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HopeRF Micro electronics |
| Package | QFN-16-EP(3x3) |
| Category | RF And Wireless |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operation Voltage Supply | VDD | 1.8 | 3.6 | V | 6 | ||
| Operation Temperature | TOP | -40 | 85 | ℃ | 6 | ||
| Supply Voltage Slew Rate | 1 | mV/us | 6 | ||||
| Supply Voltage | VDD | -0.3 | 3.6 | V | 6 | ||
| Interface Voltage | VIN | -0.3 | V | max printed as VDD + 0.3 V | 6 | ||
| Junction Temperature | TJ | -40 | 125 | ℃ | 6 | ||
| Storage Temperature | TSTG | -50 | 150 | ℃ | 6 | ||
| Soldering Temperature | TSDR | 255 | ℃ | Lasts at least 30 seconds | 6 | ||
| ESD Rating | -2 | 2 | kV | Human Body Model (HBM) | 6 | ||
| Latch-up Current | -100 | 100 | mA | @ 85 ℃ | 6 | ||
| Frequency Range | FRF | 300 | 960 | MHz | 7 | ||
| Symbol Rate (OOK demodulation) | SR | 0.1 | 40 | ksps | OOK demodulation | 7 | |
| Symbol Rate ((G)FSK demodulation) | SR | 0.1 | 100 | ksps | (G)FSK demodulation | 7 | |
| Deviation | FDEV | 1 | 200 | kHz | (G)FSK | 7 | |
| Crystal Frequency | FXTAL | 26 | 26 | 26 | MHz | 8 | |
| Crystal Tolerance | -20 | 20 | ppm | 8 | |||
| Load Capacitance | CLOAD | 10 | 15 | 20 | pF | 8 |
CAD (KiCad official)
- Symbol:
CMT2219A-EQR - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
cmt2219a-eqr-etched.step/cmt2219a-eqr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cmt2219a-eqr.step/cmt2219a-eqr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HopeRF Micro electronics datasheet (40 pp, sha256
76d2d498c34392f1, retrieved 2026-10-18, tier: lcsc) - 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).