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MAX4951AE Evaluation Kit

Evaluates: MAX4951AE

19-4953; Rev 0; 9/09

General Description

The MAX4951AE evaluation kit (EV kit) provides a proven

design to evaluate the MAX4951AE dual-channel buffer.

The EV kit contains four sections: application circuit,

characterization circuit, and two sets of calibration

traces.

The application circuit is designed to demonstrate the

MAX4951AE IC’s use in redriving Serial-ATA (SATA)

signals and SATA cable detection. This section of the

EV kit operates from an external +5V supply that is regu-

lated by an on-board LDO to +3.3V, which powers the

MAX4951AE (U1) device. All traces in the application cir-

cuit are 100I differential controlled-impedance traces.

The characterization circuit is provided for eye diagram

evaluation using SMA connectors and 50I controlled-

impedance traces. This section is powered by an exter-

nal +3.3V power supply.

Features

S Application Circuit with SATA Input/Output

S Eye Diagram Test Circuit with SMA Inputs/

Outputs

S Calibration Traces (50I Load Trace and Through

Trace)

S Proven PCB Layout

S Fully Assembled and Tested

Ordering Information

+Denotes lead(Pb)-free and RoHS compliant.

Component List

*EP = Exposed pad.

PART TYPE

MAX4951AEEVKIT+ EV Kit

DESIGNATION QTY DESCRIPTION

C1–C8, C14–

C17, C22–C25

0.01FF Q10%, 25V X7R ceramic

capacitors (0402)

Murata GRM155R71E103KA

TDK C1005X7R1E103K

C9, C18, C26,

C27

1FF Q10%, 16V X7R

ceramic capacitors (0603)

Murata GRM188R71C105K

TDK C1608X7R1C105K

C10–C13, C19,

C20, C21

0.1FF Q10%, 16V X7R ceramic

capacitors (0402)

Murata GRM155R71C104K

TDK C1005X7R1C104K

C28 1

4.7FF Q10%, 10V X7R ceramic

capacitor (0805)

Murata GRM21BR71A475K

D1 1 Green LED (0603)

H1 1 Disk-drive power connector

J1, J2 2 7-position SATA vertical connectors

JU1, JU2, JU3,

JU5, JU7

5 3-pin headers, 0.1in centers

DESIGNATION QTY DESCRIPTION

JU4 1 2-pin header, 0.1in centers

JU6 0 Not installed, 3-pin header

JU8, JU9 0 Not installed, 3-pin headers

P1–P10 10

Edge-mount receptacle SMA

connectors

R1 1

200I Q5% resistor (0603)

R2, R3 2

49.9I Q1% resistors (0603)

R4, R6 2

0I resistors (0603)

R5 0 Not installed, resistor (0603)

U1, U2 2

SATA/eSATA bidirectional redrivers

(20 TQFN-EP*)

Maxim MAX4951AECTP+

U3 1

3.3V regulator (6 SOT23)

Maxim MAX6329TPUT-T+

(Top Mark: AAIP)

6 Shunts

1 PCB: MAX4951AE EVALUATION KIT+

Summary of content (10 pages)

PAGE 1
9-4953; Rev 0; 9/09 MAX4951AE Evaluation Kit The MAX4951AE evaluation kit (EV kit) provides a proven design to evaluate the MAX4951AE dual-channel buffer. The EV kit contains four sections: application circuit, characterization circuit, and two sets of calibration traces. The application circuit is designed to demonstrate the MAX4951AE IC’s use in redriving Serial-ATA (SATA) signals and SATA cable detection.
PAGE 2
Evaluates: MAX4951AE MAX4951AE Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX4951AE when contacting these component suppliers. Quick Start (Application Circuit) Detailed Description of Hardware Recommended Equipment The MAX4951AE evaluation kit (EV kit) evaluates the MAX4951AE dual-channel buffer.
PAGE 3
MAX4951AE Evaluation Kit Device Enable (JU1) The MAX4951AE (U1) is enabled/disabled by configuring jumper JU1 (see Table 3). When disabled, the MAX4951AE buffers are powered down and the part is placed in a low-power mode. When enabled, and no SATA device is plugged in (CAD is unconnected), the device enters a low-power mode. Once a SATA device is plugged in (CAD grounded), the device goes into active mode. The user can also connect directly to a +3.3V supply, which is available on a SATA power connector.
PAGE 4
Evaluates: MAX4951AE MAX4951AE Evaluation Kit Characterization Circuit (U2) The characterization circuit is provided as a separate test circuit for eye diagram evaluation of the MAX4951AE IC. This circuit provides differential SMA inputs and outputs with 50I controlled-impedance traces. Channel B is not utilized in this section of the EV kit, but provides the same performance as channel A. Input Supply (VCC) The characterization circuit is powered by an external +3.
PAGE 5
MAX4951AE Evaluation Kit Evaluates: MAX4951AE Figure 1a.
PAGE 6
Evaluates: MAX4951AE MAX4951AE Evaluation Kit Figure 1b.
PAGE 7
MAX4951AE Evaluation Kit Evaluates: MAX4951AE Figure 1c.
PAGE 8
Evaluates: MAX4951AE MAX4951AE Evaluation Kit 1.0’’ Figure 2. MAX4951AE EV Kit Component Placement Guide— Component Side 1.0’’ Figure 3.
PAGE 9
MAX4951AE Evaluation Kit Evaluates: MAX4951AE 1.0’’ Figure 4. MAX4951AE EV Kit PCB Layout—Inner Layer 2 1.0’’ Figure 5.
PAGE 10
Evaluates: MAX4951AE MAX4951AE Evaluation Kit 1.0’’ Figure 6. MAX4951AE EV Kit PCB Layout—Solder Side Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.