MAX4952A

PRODUCTION

Dual Equalized 1.5/3.0/6.0GT/s SAS/SATA Redriver

Ultra-Small Equalizer/Redriver Supports SAS Data Rates Up to 6.0GT/s (Gigatransfers per Second)

Data Sheet (Rev. 0) Product Selection Table

Part Models: 2
1ku List Price: Starting From $13.12

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Overview

Single +3.3V Supply Operation
SAS Gen I/II Up to 6.0GT/s
Excellent Return Loss
- 8dB at 3.0GT/s
Supports SAS/SATA OOB (Out-of-Band) Signaling Very Fast Entry and Exit Time
- 5ns (typ)
Internal Input/Output 50Ω Termination Resistors
Selectable Input Equalization
- 0, 3dB
Standard 1000mV_P-P (typ) Output
Selectable Output Preemphasis
- 0, 3dB
Inline Signal Traces for Flowthrough Layout
Space-Saving, 3.5mm x 5.5mm TQFN Package

The MAX4952A dual-channel redriver is designed to redrive one full lane of SAS or SATA signals up to 6.0GT/s (gigatransfers per second) and operates from a single +3.3V supply.

The MAX4952A features independent input equalization and output preemphasis. The MAX4952A enhances signal integrity at the receiver by equalizing the signal at the input and establishing preemphasis at the output of the device. SAS and SATA OOB (Out-of-Band) signaling is supported using high-speed amplitude detection on the inputs and squelch on the corresponding outputs.

Inputs and outputs are all internally 50Ω terminated and must be AC-coupled to the SAS/SATA controller IC and SAS/SATA device.

The MAX4952A is available in a small 28-pin, 3.5mm x 5.5mm TQFN package with flowthrough traces for ease of layout. This device is specified over the 0°C to +70°C operating temperature range.

Applications

Data Storage/Work Stations
Docking Stations
Servers

Part Models: 2
1ku List Price: Starting From $13.12

Documentation

Data Sheet 1

MAX4952A: Dual Equalized 1.5/3.0/6.0GT/s SAS/SATA Redriver Data Sheet (Rev.0) 07/07/2009

Reliability Data 1

MAX4952A Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX4952ACTI+	28-LFCSP-3.5X5.5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX4952ACTI+T	28-LFCSP-3.5X5.5X0.75	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

Evaluation Kit for the MAX4952A

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Features and Benefits

Application Circuit with SAS and SATA Input/Output
Eye Diagram Test Circuit with SMA Inputs/Outputs
Calibration Traces (50Ω Single-Ended Load Trace and 50Ω Single-Ended Through Trace)
Lead(Pb)-Free and RoHS Compliant
Proven PCB Layout
Fully Assembled and Tested

Product Details

The MAX4952A evaluation kit (EV kit) provides a proven design to evaluate the MAX4952A dual-channel buffer. The EV kit contains four sections: an application circuit, characterization circuit, and two calibration traces.

The application circuit (Figure 1a) is designed to demonstrate the MAX4952A IC's use in redriving Serial-Attached SCSI (SAS) and Serial ATA (SATA) signals. This section of the EV kit operates from an external +5V supply that is regulated by an on-board LDO to +3.3V, which powers the MAX4952A (U1) device. All traces in the application circuit are 100Ω differential controlled-impedance traces.

The characterization circuit (Figure 1b) is provided for eye diagram evaluation using SMA connectors and 50Ω single-ended controlled-impedance traces. This section is powered by an external +3.3V supply.