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NRF52811-QFAA-R

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Nordic Semicon RF Transceiver ICs, QFN-48-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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NRF52811-QFAA-R

Nordic Semicon · RF Transceiver ICs · QFN-48-EP(6x6)

NRF52811-QFAA-R from Nordic Semicon, in a QFN-48-EP(6x6). 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 DEC1 passive 0.9 V regulator digital supply decoupling.
2 P0.00/XL1 bidirectional General purpose I/O, also analog input XL1 for connection of the 32.768 kHz crystal (LFXO).
3 P0.01/XL2 bidirectional General purpose I/O, also XL2 for connection of the 32.768 kHz crystal (LFXO).
4 P0.02/AIN0 bidirectional General purpose I/O with analog input AIN0.
5 P0.03/AIN1 bidirectional General purpose I/O with analog input AIN1.
6 P0.04/AIN2 bidirectional General purpose I/O with analog input AIN2.
7 P0.05/AIN3 bidirectional General purpose I/O with analog input AIN3.
8 P0.06 bidirectional General purpose I/O.
9 P0.07 bidirectional General purpose I/O.
10 P0.08 bidirectional General purpose I/O.
11 P0.09 bidirectional General purpose I/O.
12 P0.10 bidirectional General purpose I/O.
13 VDD power_in Power supply pin (1.7 V to 3.6 V supply range per feature list).
14 P0.11 bidirectional General purpose I/O.
15 P0.12 bidirectional General purpose I/O.
16 P0.13 bidirectional General purpose I/O.
17 P0.14 bidirectional General purpose I/O.
18 P0.15 bidirectional General purpose I/O.
19 P0.16 bidirectional General purpose I/O.
20 P0.17 bidirectional General purpose I/O.
21 P0.18 bidirectional General purpose I/O.
22 P0.19 bidirectional General purpose I/O.
23 P0.20 bidirectional General purpose I/O.
24 P0.21/nRESET bidirectional General purpose I/O, also usable as the nRESET reset pin.
25 SWDCLK input Serial wire debug clock input.
26 SWDIO bidirectional Serial wire debug I/O.
27 P0.22 bidirectional General purpose I/O.
28 P0.23 bidirectional General purpose I/O.
29 P0.24 bidirectional General purpose I/O.
30 ANT passive Single-ended 2.4 GHz radio antenna connection (on-chip balun).
31 VSS power_in Ground.
32 DEC2 passive Regulator decoupling pin.
33 DEC3 passive Regulator decoupling pin.
34 XC1 input Connection for the 32 MHz crystal.
35 XC2 output Connection for the 32 MHz crystal.
36 VDD power_in Power supply pin (1.7 V to 3.6 V supply range per feature list).
37 P0.25 bidirectional General purpose I/O.
38 P0.26 bidirectional General purpose I/O.
39 P0.27 bidirectional General purpose I/O.
40 P0.28/AIN4 bidirectional General purpose I/O with analog input AIN4.
41 P0.29/AIN5 bidirectional General purpose I/O with analog input AIN5.
42 P0.30/AIN6 bidirectional General purpose I/O with analog input AIN6.
43 P0.31/AIN7 bidirectional General purpose I/O with analog input AIN7.
44 NC unconnected No connect.
45 VSS power_in Ground.
46 DEC4 passive Regulator decoupling pin.
47 DCC passive DC/DC converter output.
48 VDD power_in Power supply pin (1.7 V to 3.6 V supply range per feature list).
49 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Nordic Semicon
Package QFN-48-EP(6x6)
Category RF And Wireless
Pins 49

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 VDD 1.7 3 3.6 V Independent of DCDC enable 436
Operating temperature TA -40 25 85 °C 436
Supply rise time (0 V to 1.7 V) tR_VDD 60 ms 0 V to 1.7 V 436
Supply voltage VDD -0.3 3.9 V 437
I/O pin voltage VI/O -0.3 V VDD ≤ 3.6 V; printed maximum is VDD + 0.3 V 437
I/O pin voltage VI/O -0.3 3.9 V VDD > 3.6 V 437
RF input level 10 dBm Radio 437
Storage temperature -40 125 °C QFN package 437
ESD HBM 3 kV Human Body Model, QFN package 437
ESD CDM 1 kV Charged Device Model, QFN package 437
Power fail comparator warning threshold VPOF 1.7 2.8 V Falling supply voltage; configurable in 100 mV increments between min and max 61
Power fail threshold voltage tolerance VPOFTOL -5 1 5 % 61
Brown out reset voltage range, SYSTEM OFF VBOR,OFF 1.2 1.7 V SYSTEM OFF mode 61
Brown out reset voltage range, SYSTEM ON VBOR,ON 1.48 1.7 V SYSTEM ON mode 61
64 MHz internal oscillator frequency tolerance fTOL_HFINT -8 1.5 8 % 72
64 MHz crystal oscillator frequency tolerance requirement (proprietary radio) fTOL_HFXO -60 60 ppm 2.4 GHz proprietary radio applications 72
64 MHz crystal oscillator frequency tolerance requirement (BLE) fTOL_HFXO_BLE -40 40 ppm Bluetooth low energy applications 72
32.768 kHz RC oscillator frequency tolerance fTOL_LFRC -2 2 % 73
32.768 kHz RC oscillator frequency tolerance after calibration fTOL_CAL_LFRC -500 500 ppm Constant temperature within ±0.5 °C; calibration at least every 8 s; 3 sigma 73
32.768 kHz crystal oscillator frequency tolerance requirement (BLE stack) fTOL_LFXO_BLE -250 250 ppm BLE stack 73
32.768 kHz crystal oscillator frequency tolerance requirement (ANT stack) fTOL_LFXO_ANT -50 50 ppm ANT stack 73
Peak to peak amplitude for external low swing clock VAMP_IN_XO_LOW 200 1000 mV Input signal must not swing outside supply rails 73
Operating frequencies fOP 2360 2500 MHz Radio 237
Maximum output power PRF 4 dBm 238
RF power accuracy PRFCR -4 4 dB 238
1st Adjacent Channel Transmit Power 1 MHz PRF1,1 -25 dBc 1 MHz (1 Mbps) 238
2nd Adjacent Channel Transmit Power 2 MHz PRF2,1 -50 dBc 2 MHz (1 Mbps) 238
1st Adjacent Channel Transmit Power 2 MHz PRF1,2 -25 dBc 2 MHz (2 Mbps) 238
2nd Adjacent Channel Transmit Power 4 MHz PRF2,2 -50 dBc 4 MHz (2 Mbps) 238
Error vector magnitude Evm 12 %rms IEEE 802.15.4 238
2nd harmonics Pharm2nd, IEEE 802.15.4 -45 dBm IEEE 802.15.4 mode 238
Differential non-linearity, 10-bit resolution DNL10 -0.95 LSB 10-bit resolution 281
Differential non-linearity, 12-bit resolution DNL12 -0.95 1.3 LSB 12-bit resolution 281
Error for Gain = 1/6 EG1/6 -3 3 % Gain = 1/6; does not include temperature drift 282
Error for Gain = 1/4 EG1/4 -3 3 % Gain = 1/4; does not include temperature drift 282
Error for Gain = 1/2 EG1/2 -3 4 % Gain = 1/2; does not include temperature drift 282
Error for Gain = 1 EG1 -3 4 % Gain = 1; does not include temperature drift 282

CAD (KiCad official)

  • Symbol: NRF52811-QFAA-R
  • Footprint: Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.2x4.2mm
  • 3D model: QFN-48-EP(6x6), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: nrf52811-qfaa-r-etched.step / nrf52811-qfaa-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); nrf52811-qfaa-r.step / nrf52811-qfaa-r.glb are the bare package body.

Provenance

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

  • Datasheet: Nordic Semicon datasheet (444 pp, sha256 610a1a8d407c080b, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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