ISL28114SOT23EVAL1Z Intersil, ISL28114SOT23EVAL1Z Datasheet

ISL28114SOT23EVAL1Z

Manufacturer Part Number

ISL28114SOT23EVAL1Z

Description

EVALUATION BOARD FOR ISL28114

Manufacturer

Intersil

Datasheets

1.ISL28113SOT23EVAL1Z.pdf (4 pages)

2.ISL28114SOT23EVAL1Z.pdf (21 pages)

Specifications of ISL28114SOT23EVAL1Z

Channels Per Ic

1 - Single

Amplifier Type

General Purpose

Output Type

Rail-to-Rail

Slew Rate

2.5 V/µs

Current - Output / Channel

31mA

Operating Temperature

-40°C ~ 125°C

Current - Supply (main Ic)

300µA

Voltage - Supply, Single/dual (±)

2.4 V ~ 5.5 V, ±1.2 V ~ 2.75 V

Board Type

Fully Populated

Utilized Ic / Part

ISL28114

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

-3db Bandwidth

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ISL28113/14SOT23EVAL1Z Evaluation Board

User’s Guide

Introduction

The ISL28113/14SOT23EVAL1Z evaluation board is a

design platform containing all the circuitry needed to

characterize critical performance parameters of the

ISL28113 and ISL28114 operational amplifiers, using a

variety of user defined test circuits.

The ISL28113 and ISL28114 CMOS operational

amplifiers feature low power consumption, low input bias

current, and rail-to-rail input and output drive capability.

They are designed to operate with a single lithium cell or

two Ni_Cd batteries.

Reference Documents

• ISL28113 Data Sheet,

• ISL28114 Data Sheet,

Evaluation Board Key Features

The ISL28113/14SOT23EVAL1Z 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 single 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 (Figure 1)

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

and Ground connections on the evaluation board. 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

January 19, 2010

AN1520.0

VCM

IN-

IN+

VREF

FN6728

FN6800

GND

IN +

IN -

FIGURE 2. BASIC AMPLIFIER CONFIGURATION

1-888-INTERSIL or 1-888-468-3774

0Ω

10k

RIN-

RIN+

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

RREF+

100k

10k

IN+

IN-

Application Note 1520

C4 can connect to ground through R4 and R16 resistors.

These resistors are not populated, but can be used to

provide additional power supply filtering. Four additional

capacitors, C1 and C5 (0.01µF) and C7 and C8 (0.1µF)

are connected close to the part to filter out high

frequency noise. Anti-reverse diodes D1 and D2 protect

the circuit in the case of accidental polarity reversal.

Amplifier Configuration

(Figure 2)

The schematic 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 can be connected to ground to

establish a ground referenced input for split supply

operation, or can be externally set to any reference level

for single supply operation. Note: VREF should not be

left floating.

100k

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

Intersil (and design) is a registered trademark of Intersil Americas Inc.

V+

V-

FIGURE 1. POWER SUPPLY CIRCUIT

V-

4.7µF

S1AB

J13

ISL28113, ISL28114

0Ω

4.7µF

S1AB

V+

10k

J10

VOUT

VREF

J11

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ISL28114SOT23EVAL1Z Summary of contents

Page 1

... VM 10k RREF+ 100k 0Ω 10k CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners VREF J10 J9 J13 C2 C4 4.7µ ...

Page 2

User-selectable Options (Figures 3 and 4) Component pads are included to enable a variety of user-selectable circuits to be added to the amplifier inputs, the VREF input, the output and the amplifier feedback loop. A voltage divider and filter option ...

Page 3

... ISL28113/14SOT23EVAL1Z Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com ...

Page 4

ISL28113/14SOT23EVAL1Z Schematic Diagram DNP DNP ENABLE J14 S1 3 R19 2 1 DNP DNP DNP 4.7µF 4.7µ S1AB S1AB IN- IN+ NODE OUT R8 R10 DNP ...

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