Datasheet > EV2995-10

EV2995-10

更新时间： 2022-11-24 21:54:29

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G2995 Evaluation Board Manual

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EV2995-10 数据手册

Global Mixed-mode Technology

EV2995-10

G2995 Evaluation Board Manual

Introduction

The G2995 evaluation board is designed to provide the design engineer with a fully functional prototype system

in which to evaluate the G2995 in both a static environment and with a complete memory system. It is one version

of the board, which SOP-8L(FD) is used. The application note contains information regarding the board,for more in-

formation regarding the G2995 please refer to the datasheet.

Schematic

The following schematic was used to create the layout.

Bill of Material

Name

Qty

Value

Description

G2995 DDR Linear Regulator

Manufacturer

Global Mixed-mode Tech-

nology

Model Number

G2995

http://www.gmt.com.tw

SANYO

C3, C5

C1, C2

330uf 6.3V POSCAP Series

6TPD330M

6TPB68M

1068X7R1H104K

68uf

6.3V POSCAP Series

0.1uf

0603 Ceramic Capacitor X7R 6.3V TDK

Application

The G2995 evaluation board can be used immediately in either a static test environment to check functionality

or in a memory termination scheme on a motherboard. In either implementation the following steps should be

taken to ensure correct operation.

1. Correct leads from the evaluation board. The board layout has been designed to allows sockets to be directly sol-

dered.

2. AVIN and PVIN should be connected to a 2.5V power supply.

3. The VDDQ input provides the internal divide by two reference voltage. Both VREF and VTT will track this

internal voltage, nominally a 2.5V will be applied.

4. The VREF pad is the output for the VREF from the G2995 after being bypassed by a ceramic capacitor.

This can be connected either to a multi-meter for confirmation or directly to the memory controller and DIMMS.

5. The remaining two pads are for the force and sense leads of the VTT output. These should be connected

directly to the termination plane or a multi-meter if interested in verification. The output will be regulated where the

VSENSE leads connect to the VTT leads permitting the connection to a motherboard without suffering from large

resistance drops.

Mar 12, 2003

TEL: 886-3-5788833

http://www.gmt.com.tw

12 3 4

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