component
AT2402E
Public Made by Adomby adom
ZHONGKEWEI RF Front End Circuits, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownAT2402E
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);at2402e.step/at2402e.glbare 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, 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).