ISL28248MSOPEVAL1Z【PDF 1/4 页】EVAL BOARD FOR ISL28248 MSOP

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录1222

[1页]2页 3页 4页

ISL282X8MSOPEVAL1Z ISL282X8SOICEVAL1Z

Evaluation Board User ’s Guide

Introduction

Application Note

August 28, 2008

AN1419.0

The ISL282X8MSOPEVAL1Z and ISL282X8SOICEVAL1Z

evaluation board are design platforms containing all the

V-

J11

V+

J12

J13

VREF

J14

circuitry needed to characterize critical performance

parameters of the ISL282X8 operational amplifiers in both

MSOP-8 and SOIC-8 packages, using a variety of user

defined test circuits.

The ISL28238 and ISL28248 high-speed operational

amplifiers feature low power consumption, while ISL28258

4.7μF

and ISL28268 operational amplifiers feature ultra-low power

consumption. All op amps have rail-to-rail output drive

0.01μF

capability and are designed to operate with a single lithium

FIGURE 1. POWER SUPPYLY CIRCUIT

cell or two Ni_Cd batteries.

User-selectable SMA edge connectors are also provided for

Reference Documents

? ISL28238 Data Sheet, FN6336

? ISL28248 Data Sheet, FN6337

? ISL28258 Data Sheet, FN6377

? ISL28268 Data Sheet, FN6378

Evaluation Board Key Features

The ISL282xEVAL1Z is designed to enable the IC to operate

from a single supply, +2.4VDC to +5.5VDC or from split

supplies, ±1.2VDC to ±2.75V. The board is configured for a

dual op amp connected for differential input with a closed

loop gain of 10. A single external reference voltage (VREF)

pin and provisions for a user-selectable voltage divider-filter

are included.

Power Supplies

External power connections are made through the +V, -V,

VREF and Ground connections on the evaluation board.

+V and -V. For single supply operation, the -V and Ground

pins are tied together to the power supply negative terminal.

For split supplies +V and -V terminals connect to their

respective power supply terminals. De-coupling capacitors

C2 and C4 connect to their respective supplies through R16

and R31 0 Ω resistors. These resistors are 0 Ω but can be

changed by the user to provide additional power supply

filtering, or to reduce the voltage rate-of-rise to less than

±1V/μS. Two additional capacitors, C3 and C5 are

connected close to the part to filter out high frequency noise.

Anti-reverse diode D1 protects the circuit in the case of

accidental polarity reversal (see Figure 1).

Amplifier Configuration

The schematic of 1/2 of the op amp with the components

supplied is shown in Figure 2. The circuit implements a

differential input amp with a closed loop gain of 10. The

circuit can operate from a single supply or from dual

supplies. The VREF pin must be connected to ground to

ISL282X8 (1/2)

IN-

IN -

RIN-

10k Ω

IN-

100k Ω

V+

0 Ω

VOUT

IN+

RIN+

IN+

V-

VCM

VREF

IN +

VREF

GND

10k Ω

REF+

100k Ω

10k Ω

FIGURE 2. BASIC AMPLIFIER CONFIGURATION

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式