GRF6402

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 GRF6402 is a SPI-controlled, bi-directional, 31.75 dB range digital step attenuator which provides precise stepping in 0.25 dB increments. The device’s serial interface utilizes three externally-defined address bits, allowing up to 8 unique devices to share a common SPI bus. In addition to supporting traditional serial programming, the GRF6402 also includes a special Rapid Fire selection pin which allows the device to be immediately switched into a pre-defined attenuation state.

In terms of performance, the GRF6402 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 1.4 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

Download: GRF6402 EVB Test Software

Features

• 31.75dB range
• 0.25dB steps via 7-bit Control
• Serial Interface with Support for 8 Addresses
• 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)
• 210 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 3 x 3 mm QFN-16 Package

Reference: 5.0V/2.0GHz

• IL: 1.4 dB
• IP0.1dB: 30.5 dBm
• IIP3: 55 dBm
• INL Attenuation Error: ± (0.01 + 2.5%) dB
• DNL Attenuation Error: ± 0.1 dB