SKY65338-21

450-470 MHz Transmit/Receive Front-end Module

Please note: SKY65338-21 is being discontinued and is not recommended for new designs.

Skyworks SKY65338-21 is a high-efficiency Front-End Module (FEM) that incorporates a transmit and receive path, and an antenna transmit/receive (T/R) switch.

The transmit path consists of a high efficiency Power Amplifier (PA) followed by an harmonic filter for rejection of harmonic frequencies.

The PA is implemented using Skyworks high reliability Heterojunction Bipolar Transistor (HBT) process and is Class AB biased to provide maximum efficiency with a low spurious output.

A high linearity and high isolation Single-Pole Double-Throw (SPDT) switch is used at the common antenna interface between the transmit and receive paths. The receive path is a low insertion loss through-path with input and output ports internally matched to 50 Ω.

The device is mounted in a 12-pin, 8 x 8 mm Multi-Chip Module (MCM) Surface-Mounted Technology (SMT) package, which allows for a highly manufacturable low-cost solution.

Data Sheets

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Specifications

Product LifecycleObsolete

RF Frequency (MHz)450-470

Rx Insertion Loss (dB) Typ.0.6

Rx Gain (dB) Typ.—

Tx Gain (dB)32

Rx NF (dB) Typ.—

Saturated Output Power (dBm) Typ.27

Supply Voltage (V)3.6

PackageMCM, 12-pin

Package (mm)8 x 8 x 1.35

Features

Transmit output power > +25 dBm
High gain in transmit path: 32 dB
High transmit/receive isolation > 30 dB
Internal RF match and bias circuits
All RF ports internally DC blocked
Single DC supply = +3.6 V
Small footprint, MCM (12-pin, 8 x 8 mm) SMT package (MSL3, 260 °C per JEDEC J-STD-020)

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