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CMT2219A-EQR

Public Made by Adom

by adom

HopeRF Micro electronics RF Transceiver ICs, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CMT2219A-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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cmt2219a-eqr.step / cmt2219a-eqr.glb are 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, 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