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DOCSIS 3.1 Programmable-Gain Amplifier

Dual-Output, High-Performance Upstream Amplifier for DOCSIS 3.1 Applications

Product Details

Key Features

Parametric specs for Programmable Gain Amplifiers
Interface Type SPI
RF Freq. (MHz) (min) 5
RF Freq. (MHz) (max) 204
Gain Range (dB) -24.3 to +26.2
VSUPPLY (V) (min) 4.75
VSUPPLY (V) (max) 5.25
Package/Pins TQFN/56
Budgetary
Price (See Notes)
2.39
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Simplified Block Diagram

Technical Docs

Data Sheet DOCSIS 3.1 Programmable-Gain Amplifier Nov 15, 2019

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Parameters

Parametric specs for Programmable Gain Amplifiers
Interface Type SPI
RF Freq. (MHz) (min) 5
RF Freq. (MHz) (max) 204
Gain Range (dB) -24.3 to +26.2
VSUPPLY (V) (min) 4.75
VSUPPLY (V) (max) 5.25
Package/Pins TQFN/56
Budgetary
Price (See Notes)
2.39

Key Features

  • Delivers +68dBmV Output Power While Meeting DOCSIS 3.1 Requirements
  • Covers 5MHz–204MHz Output Bandwidth
  • Dual Outputs Eliminates Need for an External RF Switch
  • Programmable Power Codes Allow Operation at Reduced Power Dissipation
  • Exceeds Spurious Requirements with Fully Loaded OFDM Allocation at +65dBmV at Modem Output
  • Two GPIO's Available for SPI-bus Control of External RF Switches
  • 56L 8mm x 8mm x 0.75mm TQFN Package with Exposed Paddle

Applications/Uses

  • Cable Modem (CM)
  • Customer Premises Equipment (CPE)
  • DOCSIS 3.1 Upstream (D3.1 US)

Description

The MAX3522B is a programmable gain amplifier (PGA) designed to exceed the DOCSIS 3.1 Upstream Transmit requirements. By providing dual outputs, the MAX3522B eliminates the need for an external RF switch when selecting between two different upstream bandwidths. The PGA meets the DOCSIS 3.1 spurious limits while transmitting a combined output power of 68dBmV over the RF bandwidth of 5MHz to 204MHz from either output. The gain is controlled in 1dB steps over a 54dB range using a SPI 3-wire interface. The use of Maxim's high-voltage CMOS process enables the device to deliver high dynamic range, while minimizing power dissipation under a +5V supply rail.

The MAX3522B is available in a 56-pin 8mm x 8mm x 0.75mm TQFN package, and operates over temperature range of 0°C to +70°C.

Simplified Block Diagram

MAX3522B: Simplified Block Diagram MAX3522B: Simplified Block Diagram Zoom icon

Technical Docs

Data Sheet DOCSIS 3.1 Programmable-Gain Amplifier Nov 15, 2019

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .