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AT2402E

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ZHONGKEWEI RF Front End Circuits, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AT2402E

ZHONGKEWEI · RF Front End Circuits · QFN-16-EP(3x3)

AT2402E from ZHONGKEWEI, 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 RX output Receive RF signal port, DC-grounded internally.
2 GND power_in Ground; all GND pins must be connected to ground in use.
3 GND power_in Ground; all GND pins must be connected to ground in use.
4 TX input Transmit RF signal port, DC-grounded internally.
5 TXEN input CMOS transmit-enable control input; high level >1.2V, low <0.3V.
6 RXEN input CMOS receive-enable control input; high level >1.2V, low <0.3V.
7 DET output Output power detector, analog voltage output (0.15-1.5V for Pout +5 to +20dBm).
8 GND power_in Ground; all GND pins must be connected to ground in use.
9 GND power_in Ground; all GND pins must be connected to ground in use.
10 ANT bidirectional Antenna port: power amplifier output or LNA input, DC-grounded internally.
11 GND power_in Ground; all GND pins must be connected to ground in use.
12 GND power_in Ground; all GND pins must be connected to ground in use.
13 DNC unconnected Do not connect; leave floating.
14 VDD power_in Optional supply connection, internally tied to pin 16 and may be left unconnected (supply 2.0-3.6V, abs max 4.5V).
15 GND power_in Ground; all GND pins must be connected to ground in use.
16 VDD power_in Supply voltage input pin, 2.0V to 3.6V operating (3.3V typical), 4.5V absolute maximum.
17 GND power_in Ground (exposed pad); must be connected to ground in use.

Key specifications

Parameter Value
Manufacturer ZHONGKEWEI
Package QFN-16-EP(3x3)
Category RF & Radio
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
Supply voltage (abs max) 0 4.5 V 7
Control pin voltage (abs max) 0 3.6 V via 1 kOhm resistor 7
Supply pin current (abs max) 350 mA TXEN high, current through supply pin 7
Control pin current (abs max) 1 µA 7
TX signal level (abs max) 10 dBm all operating states 7
Antenna RX signal level (abs max) 5 dBm receive path on 7
Junction temperature (abs max) 150 °C 7
Storage temperature -50 150 °C no RF input and no DC supply 7
Supply voltage VDD 2 3.3 3.6 V all chip pins 8
Control voltage high 1.2 V via 1 kOhm resistor; max is VDD 8
Control voltage low 0 0.3 V 8
Operating temperature range -40 85 °C 8
Shutdown current 1 uA all control lines low 8
Operating frequency range (TX) 2.4 2.5 GHz all RF pins 50 Ohm 8
Operating frequency range (RX) 2.4 2.5 GHz all RF pins 50 Ohm 9
Output 1dB compression point 25 dBm 8
Linear output power 802.11b 22 dBm 1Mbps CCK 8
Linear output power 802.11n 18 dBm 54Mbps OFDM, antenna EVM<-33dB 8
Linear output power 802.11g 19 dBm 54Mbps OFDM, antenna EVM<-30dB 8
Large signal gain 28.5 dB Pout=+18dBm 8
Small signal gain (S21) S21 29 dB Pout=0dBm 8
Quiescent current (TX) 60 mA no RF input 8
Transmit current 140 mA Pout=+18dBm 8
Power detect voltage 0.15 1.5 V Pout=+5 to +20dBm 8
RX gain 12 dB 9
RX noise figure 3 dB 9
RX input return loss -12 dB 9
RX output return loss -12 dB 9
RX path current 10.5 mA quiescent, no RF input 9
RX input 1dB compression point -12 dBm signal level at ANT port 9
Second harmonic -21 dBm Pout=+18dBm 9
Third harmonic -26 dBm Pout=+18dBm 9
Total harmonic distortion THD 1.12 % Pout=+18dBm 9
Input return loss (S11) S11 -24 dB 9
Output return loss (S22) S22 -15 dB 9

CAD (KiCad official)

  • Symbol: AT2402E
  • 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: at2402e-etched.step / at2402e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); at2402e.step / at2402e.glb are the bare package body.

Provenance

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

  • Datasheet: ZHONGKEWEI datasheet (15 pp, sha256 413ac3dbd631aa0d, retrieved 2026-10-23, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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