ISL28168EVAL1Z Intersil, ISL28168EVAL1Z Datasheet

ISL28168EVAL1Z

Manufacturer Part Number

ISL28168EVAL1Z

Description

EVALUATION BOARD FOR ISL28168

Manufacturer

Intersil

Datasheets

1.ISL28268MSOPEVAL1Z.pdf (16 pages)

2.ISL28168EVAL1Z.pdf (4 pages)

Specifications of ISL28168EVAL1Z

Channels Per Ic

1 - Single

Amplifier Type

General Purpose

Output Type

Single-Ended, Rail-to-Rail

Slew Rate

0.1 V/µs

-3db Bandwidth

420kHz

Current - Output / Channel

30mA

Operating Temperature

-40°C ~ 125°C

Current - Supply (main Ic)

34µA

Voltage - Supply, Single/dual (±)

2.4 V ~ 5.5 V, ±1.2 V ~ 2.75 V

Board Type

Fully Populated

Utilized Ic / Part

ISL28168

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Introduction

The ISL281x8EVAL1Z evaluation board is a design platform

containing all the circuitry needed to characterize critical

performance parameters of the ISL281x8 operational

amplifiers, using a variety of user defined test circuits.

The ISL28138 and ISL28148 high-speed operational

amplifiers feature low power consumption, while the

ISL28158 and ISL28168 operational amplifiers feature

ultra-low power consumption. All op amps have rail-to-rail

output drive capability and are designed to operate with a

single lithium cell or two Ni_Cd batteries.

Reference Documents

• ISL28138 Data Sheet, FN6336

• ISL28148 Data Sheet, FN6337

• ISL28158 Data Sheet, FN6377

• ISL28168 Data Sheet, FN6378

Evaluation Board Key Features

The ISL281x8EVAL1Z 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. It also contains 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-

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+

VCM

IN-

IN+

VREF

Figure 1

VREF

GND

IN+

IN -

)

ISL281x8EVAL1Z Evaluation Board User’s Guide

Application Note

0Ω

FIGURE 2.

10kΩ

RIN-

RIN+

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

BASIC AMPLIFIER CONFIGURATION

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

RREF+

100kΩ

10kΩ

IN-

IN+

and V- terminals connect to their respective power supply

terminals. De-coupling capacitors C

ground through R

additional power supply filtering, or to reduce the voltage

rate-of-rise to less than ±1V/µs. Two additional capacitors,

frequency noise. Anti-reverse diodes D

circuit in the case of accidental polarity reversal.

Amplifier Configuration (

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.

100kΩ

and C

are 0Ω but can be changed by the user to provide

0.1µF

August 14, 2007

V+

V-

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

are connected close to the part to filter out high

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

FIGURE 1. POWER SUPPLY CIRCUIT

4.7µF

and R

ISL281x8

R21

0Ω

0Ω resistors. Resistors R

10kΩ

Figure

andC

4.7µF

and D

connect to

VOUT

AN1350.0

protect the

V+

0.1µF

and

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ISL28168EVAL1Z Summary of contents

Page 1

... 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 registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. AN1350.0 andC connect and R 0Ω ...

Page 2

... ISL28138FHZ-T7, IC-RAIL-TO-RAIL OP AMP, SOT-23, ROHS U1 (ISL28148EVAL1Z) ISL28148FHZ-T7, IC-RAIL-TO-RAIL OP AMP, SOT-23, ROHS U1 (ISL28158EVAL1Z) ISL28158FHZ-T7, IC-RAIL-TO-RAIL OP AMP, SOT-23, ROHS U1 (ISL28168EVAL1Z) ISL28168FHZ-T7, IC-RAIL-TO-RAIL OP AMP, SOT-23, ROHS R2, R3, R6, R8, R9, R12, R13, RESISTOR, SMD, 0603, 0.1%, MF, DNP-PLACE HOLDER R15, R16, R23, R25, R27 R1, R10, R11, R17, R20, R21, RES, SMD, 0603, 0Ω ...

Page 3

ISL281x8EVAL1Z Top View 3 Application Note 1350 AN1350.0 August 14, 2007 ...

Page 4

... J4 R17 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 ...

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