【Introduction】

KCT8871ST is a highly integrated RF Front-End Integrated Circuit incorporates key RF functionality needed for IEEE 802.11a/n/ac/ax/be WLAN systems operating in a full 5.1-7.2GHz Wi-Fi 7 frequency range. KCT8871ST integrates a high-linearity power amplifier (PA), a low noise amplifier (LNA) with bypass, the associated matching network and harmonic filters all in one device.

KCT8871ST is a 3.3 to 4.2V supply voltage power amplifier that conserves power consumption while maintaining the highest linear output power and excellent throughput. A DC voltage output power detector and a directional RF coupler are integrated to support closed-loop power control within the system.

KCT8871ST is assembled in a compact, low-profile 3x3x0.802mm 16-lead LGA package. It is the ideal RF front-end solution for implementing 5~7GHz ultra-wide band high-power WLAN systems supporting multiple standards including Wi-Fi 7.

【Specifications】

Integrated high-performance Wi-Fi 7 PA, LNA with bypass and T/R switch

Fully-matched input and output

Nominal supply voltage: 3.3 to 4.2V

Integrated RF & DC power detector

Transmit gain: 30.5dB at 4.2V

Receive gain: 13.5dB at 4.2V

Noise figure: 2.3dB at 4.2V

Output power:

+16.5dBm @ -43dB DEVM, EHT320/MCS13, 4.2V

+19.0dBm @ -40dB DEVM, HE160/MCS11, 4.2V

+21.0dBm @ -35dB DEVM, VHT80/MCS9, 4.2V

+22.0dBm @ -30dB DEVM, HT20/MCS7, 4.2V

ESD protection circuitry on all PINs

Minimal external components required

Small package: LGA-16L 3mm x 3mm x 0.802mm (MSL3, 260℃ per JEDEC J-STD-020)

RoHS and REACH Compliant