pSemi PE43712B-Z

The PE43712 is a 50Ω, HaRP technology-enhanced, 7-bit RF digital step attenuator (DSA) that supports a broad frequency range from 9 kHz to 6 GHz. It features glitch-less attenuation state transitions and supports 1.8V control voltage and an extended operating temperature range to +105 °C, making this device ideal for many broadband wireless applications. The PE43712 is a pin-compatible upgraded version of the PE43601 and PE43701. An integrated digital control interface supports both Serial Addressable and Parallel programming of the attenuation, including the capability to program an initial attenuation state at power-up. The PE43712 covers a 31.75 dB attenuation range in 0.25 dB, 0.5 dB and 1 dB steps. It is capable of maintaining 0.25 dB monotonicity through 4GHz, 0.5 dB monotonicity through 5 GHz and 1 dB monotonicity through 6 GHz. In addition, no external blocking capacitors are required if 0 VDC is present on the RF ports. The PE43712 is manufactured on pSemi’s UltraCMOS process, a patented variation of silicon-on-insulator (SOI) technology on a sapphire substrate. pSemi’s HaRP technology enhancements deliver high linearity and excellent harmonics performance. It is an innovative feature of the UltraCMOS process, offering the performance of GaAs with the economy and integration of conventional CMOS.

• Flexible attenuation steps of 0.25 dB, 0.5 dB and 1 dB up to 31.75 dB
• Glitch-less attenuation state transitions
• Monotonicity: 0.25 dB up to 4 GHz, 0.5 dB up to 5 GHz and 1 dB up to 6 GHz
• Extended +105 °C operating temperature
• Parallel and Serial programming interfaces with Serial Addressability
• Packaging—32-lead 5×5 mm QFN

• 3G/4G wireless infrastructure
• Land mobile radio (LMR) system
• Point-to-point communication system