GRF6403

31.75 dB Range / 0.25dB Step DSA

0.05 to 6.0 GHz

31.75 dB Range / 0.25dB Step DSA

0.05 to 6.0 GHz

The GRF6403 is a bi-directional, 31.75 dB range digital step attenuator which provides precise stepping in 0.25 dB increments. The device supports three unique programming modes, including serial, direct parallel, and latched parallel. In addition, the GRF6403 also includes a special Rapid Fire™ selection pin which allows the device to be immediately switched into a pre-defined attenuation state. This ability to quickly shift into a secondary state allows a single device to be used in TDD applications where different attenuation levels are needed for TX and RX modes of operation.

In terms of performance, the GRF6403 can cover the entire 50 MHz to 6 GHz range while still maintaining precise and monotonic gain stepping. Glitching has been minimized to < 2 dB for all steps. The device delivers up to 30.5 dBm of IP0.1dB, 55 dBm of IIP3 and a low IL of less than 1.3 dB at 2 GHz.

Categories & Markets

Applications

• 5G Wireless Infrastructure
• Cellular Repeaters/Boosters & DAS Systems
• Automotive Cellular and V2X Compensators
• Millimeter Wave IF Stages
• High Performance Gain Trim & AGC Loops
• TDD Applications where a Common DSA is Shared for Both TX and RX Modes of Operation

Download: GRF6403 EVB Test Software

Features

• 31.75dB range
• 0.25dB steps via 7-bit Control
• Supports Multiple Control Interfaces – Serial, Direct Parallel and Latched Parallel
• Programmable Rapid Fire™ Attenuation Setting Which Circumvents Delays Associated with SPI Programming
• Defaults to Full Attenuation for Power-On Resets
• Glitchless Stepping (< 2dB Over/Undershoot)
• 165 ns settling time for 0.25dB steps
• Bi-directional RF Use
• 3.3 V and 5 V Supply Voltages
• 50 Ω Single-ended Input and Output Impedances
• -40 to 115 °C Operating Temperature Range
• Compact 4 x 4 mm QFN-24 Package

Reference: 5.0V/2.0GHz

• IL: 1.3 dB
• IP0.1dB: 30.5 dBm
• IIP3: 58 dBm
• INL Attenuation Error: ± (0.15 + 2%) dB
• DNL Attenuation Error: ± 0.1 dB