RFSA3715
5 - 4000 MHz, Serial/Parallel Controlled Digital Step Attenuator, 7-Bit, 0.25 dB Steps
End of Life announced November 17, 2023 (PCN 23-0162).
Last Time Buy: June 1, 2025
Recommended replacement for new designs: QPC6713Q
Contact your local sales representative for assistance.
Note: Any orders for Last Time Buy materials from Qorvo are considered non-cancellable, non-returnable.
Key Features
- 7-Bit, 31.75dB Range, 0.25dB Step
- Patent Pending Circuit Architecture
- Overshoot-free Transient Switching Performance
- Frequency Range 5MHz to 4000MHz
- High Linearity, IIP3 >55dBm
- Serial and Parallel Control Interface
- Fast Switching Speed <120nsec
- Power-up Default Setting Is Maximum Attenuation
- Serial Addressable Supports Up to Eight Addresses
- Single Supply 3V to 5V Operation
- RF Pins Have No DC Voltage, Can Be DC Grounded Externally
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Qorvo's RFSA3715 is a 7-bit digital step attenuator (DSA) that features high linearity over the entire 31.75dB gain control range with 0.25dB steps. The RFSA3715 features three modes of control: serial addressable, latched parallel and direct parallel programming. The RFSA3715 has a low insertion loss of 1.5dB at 2GHz. Patent pending circuit architecture providing overshoot-free transient switching performance. External address pins allow up to eight DSAs to be controlled on a single bus. The RFSA3715 is available in a 5mm x 5mm QFN package.
Product Categories
| Frequency Min(MHz) | 5 |
| Frequency Max(MHz) | 4,000 |
| Insertion Loss(dB) | 1.5 |
| Attenuation Range(dB) | 31.75 |
| IP0.1dB(dBm) | 30 |
| IIP3(dBm) | 50 |
| Interface | Serial & Parallel |
| Bits | 7 |
| Step Size(dB) | 0.25 |
| Voltage(V) | 5 |
| Package Type | QFN |
| Package(mm) | 5.0 x 5.0 |
| ECCN | 5A991.G |
X-Microwave Design System
This product is available as an X-Microwave Block (X-MWblock) for evaluation.
X-MWblocks are RF and microwave "drop-in" components that can be used individually for prototyping or in production assemblies. X-MWblocks are easy to test, integrate, align, and configure to 60 GHz and beyond. No messy sweat soldering or silver epoxy processes are required. X-MWblocks are highly characterized with S-parameter models and connect with a patented solder-less interconnect technology.
This product appears in the following application block diagrams: