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PE43705

UltraCMOS® RF Digital Step Attenuator

RF Attenuator, Digital, 50 MHz - 8 GHz, 31.75 dB, 7-bit

Status: Standard | Data Sheet:

| RoHS Compliance: Rohs Compliant

Key Features

•Attenuation options: covers a 31.75 dB range in 0.25 dB, 0.5 dB, or 1.0 dB steps •Safe attenuation state transitions •High power handling •High linearity: +58 dBm IIP3 •1.8V control logic-compatible •105°C operating temperature •Programming modes: Direct parallel, latched parallel, serial and serial addressable •High-attenuation state @ power-up (PUP) •ESD performance •Packaging: 32-lead 5 × 5 mm QFN

Description

The PE43705 is a 50Ω, HaRP™ technology-enhanced, 7-bit RF digital step attenuator (DSA) designed for use in 3G/4G wireless infrastructure and other high performance RF applications. This DSA is a pin-compatible upgraded version of PE43703 with higher power handling and a wider frequency, control voltage and operating temperature range. An integrated digital control interface supports both serial and parallel programming of the attenuation, including the capability to program an initial attenuation state at power-up. Covering a 31.75 dB attenuation range in 0.25 dB, 0.50 dB, or 1 dB steps, it maintains a monotonic step response from 50 MHz through 8 GHz. PE43705 also features safe attenuation state transitions and is offered in a 32-lead 5 × 5 mm QFN package. In addition, no external blocking capacitors are required if 0V DC is present on the RF ports.

Part Number: PE43705
Manufacturer: pSemi
Type: 50
Frequency Min: 50 MHz
Frequency Max: 8000 MHz
Bits: 7
Attn Range: 31.75 dB
Attenuation Step: 0.25 dB
Insertion Loss Min: 1.3 dB
Insertion Loss Max: 2.4 dB
IIP3: 65 dBm
Package: 5x5

	Datasheet
	Material Declaration
	RoHS Compliance Certificate
	REACH Compliance Certificate
	S-Parameters
	Schematic/B.O.M.
	Software
	EVK Manual
	IPC-1752-2 Class 6 Form
	Application Note: Programming Multiple Devices Using a Singl
	Application Note: Soldering Guidelines for Mounting Bottom-t
	Application Note: Thermal Characterization

Part Function	Part Number	Description
Evaluation Board	EK43705-12 pSemi	Evaluation Kit for PE43705B-Z

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Product Specifications For PE43705 RF Attenuator

Part Number: PE43705 Manufacturer: pSemi Product Description: RF Attenuator, Digital, 50 MHz - 8 GHz, 31.75 dB, 7-bit

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Availability

In Stock

522

On Order

3000

by 11/13/2025

12000

by 11/20/2025

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$15.43

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PE43705

UltraCMOS® RF Digital Step Attenuator

RF Attenuator, Digital, 50 MHz - 8 GHz, 31.75 dB, 7-bit

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PE43705

UltraCMOS® RF Digital Step Attenuator

RF Attenuator, Digital, 50 MHz - 8 GHz, 31.75 dB, 7-bit

Technical Inquiry Request for PE43705 RF Attenuator

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