PE42724A-Z

PE42724A-Z is a digitally controlled RF attenuator IC. It lets you adjust RF signal level in a front-end or test setup by selecting attenuation with a digital control word sent over a standard interface (typically SPI- or 3‑wire compatible). The device provides a calibrated, discrete attenuation range across its RF ports, with the rest of the path designed for RF performance (often 50-ohm matched, low insertion loss, and good isolation). It’s used in applications like wireless receivers/transmitters, RF front-ends, power leveling, and automated test equipment to set or AGC the signal level precisely.
Key things to check in a datasheet:
- Attenuation range and step size
- RF frequency range and return loss
- Insertion loss and linearity
- Control interface (word length, timing, voltage levels)
- Supply voltage and power dissipation
- Packaging and temperature range; RoHS/variant suffix details
If you share the manufacturer or a link to the datasheet, I can give a precise, line-by-line summary.

Pin count: 16 pins. Function: RF front-end switch (single‑pole, double‑throw, SPDT) for routing RF signals.

- Manufacturer: Peregrine Semiconductor Corporation, now part of Murata’s pSemi division.
- What kind of company: A fabless semiconductor company that designs RF front-end ICs (e.g., RF switches, attenuators, phase shifters) using silicon-on-insulator technology.

- RF front-end switch for routing RF signals
- Antenna switching and diversity networks in mobile/modem transceivers
- Transmit/Receive path switching in cellular, Wi‑Fi, GPS/GNSS, and other wireless links
- Reconfigurable impedance/matching networks
- RF test and measurement equipment
- Automotive and industrial wireless systems
- Any application requiring low-loss, high-isolation RF switching in a compact package

PE42724A‑Z comes in an 8‑pin MSOP (MSOP-8) small‑outline package (RoHS compliant).