Overview
Description
The F0448 is a 3.3GHz to 4.2GHz dual RF digital variable gain amplifier (DVGA) designed for use in receivers. This dual RF DVGA provides two independent receiver paths each with 13dB typical maximum gain and 6dB noise figure designed to operate with a single +5V supply. For each path, gain control is split into 3 separate attenuators; DSA0 a single 6dB step using a single control pin, DSA1 a 23dB SPI-controlled gain adjustment in 1dB steps, and DSA2 includes 18dB attenuation in 6dB steps controlled using two control pins. F0448 offers +37dBm nominal output IP3 using 220mA total ICC. This device is packaged in a 6mm x 6mm, 36-QFN with 50Ω single-ended RF input and RF output impedances for ease of integration.
Features
- RF frequency range: 3.3GHz to 4.2GHz
- Dual path RF amp and DSAs for diversity/MIMO receivers
- < 2dB overshoot between DSA transitions
- 13dB typical max gain at 3.6GHz
- DSA0: Single 6dB coarse step
- DSA1: 23dB total gain range in 1dB steps
- DSA2: 18dB gain range in 6dB steps
- +37dBm OIP3 at 3.6GHz
- 6dB noise figure at 3.6GHz
- +5V supply voltage
- ICC = 220mA
- Independent standby: 7mA standby current
- SPI interface for DSA1
- 1-bit control for DSA0
- 2-bit control for DSA2
- 50Ω input and output impedance
- Broadband, internally matched
- Temperature range: -40 °C to +105 °C
- 6mm x 6mm, 36-QFN package
Comparison
Applications
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 4.77 MB | |
| Guide | PDF 2.83 MB | |
| Product Change Notice | PDF 726 KB | |
| Application Note | PDF 10.39 MB | |
| Application Note | PDF 520 KB | |
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Design & Development
Software & Tools
Boards & Kits
Evaluation
F0448EVB
Active
Evaluation Board for F0448 Dual Matched Broadband RF DVGA
The F0448EVB is a fully populated evaluation board which allows the customer to easily evaluate the F0448 Dual Matched Broadband RF DVGA. The attenuation setting may be set using the F0448's serial control input. Header pins on the evaluation board allow setting standby mode without off-board...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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