ISL28288EVAL1Z Intersil, ISL28288EVAL1Z Datasheet

ISL28288EVAL1Z

Manufacturer Part Number

ISL28288EVAL1Z

Description

EVALUATION BOARD FOR ISL28288

Manufacturer

Intersil

Datasheets

1.ISL28286EVAL1Z.pdf (4 pages)

2.ISL28288EVAL1Z.pdf (17 pages)

Specifications of ISL28288EVAL1Z

Channels Per Ic

2 - Dual

Amplifier Type

General Purpose

Output Type

Single-Ended, Rail-to-Rail

Slew Rate

0.14 V/µs

Current - Output / Channel

31mA

Operating Temperature

-40°C ~ 125°C

Current - Supply (main Ic)

120µA

Voltage - Supply, Single/dual (±)

2.4 V ~ 5.5 V, ±1.2 V ~ 2.75 V

Board Type

Fully Populated

Utilized Ic / Part

ISL28288

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

-3db Bandwidth

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Introduction

The ISL2828xEVAL1Z evaluation board is a design platform

containing all the circuitry needed to characterize critical

performance parameters of the ISL28286 and ISL28288

dual operational amplifiers, using a variety of user defined

test circuits.

The ISL2828x amplifiers feature low noise, low distortion,

and rail-to-rail output drive capability. They are designed to

operate with single and dual supplies from +5VDC

(±2.5VDC) down to +2.4VDC (±1.2VDC).

Reference Documents

• ISL28286 Data Sheet, FN6312

• ISL28288 Data Sheet, FN6339

Evaluation Board Key Features

The ISL2828xEVAL1Z is designed to enable the IC to

operate from a single supply (+2.4VDC to +5VDC), or from

split supplies (±1.2VDC to ±2.5V). The board is configured

for 2 independent op amps 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 is 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+

and V- terminals connect to their respective power supply

terminals. De-coupling capacitors C

ground through R

VCM

IN-

IN+

, R

VREF

(Figure 1)

, 0Ω resistors. Resistors R

IN(A, B)+

IN(A, B)-

VREF

GND

ISL2828xEVAL1Z Evaluation Board User’s Guide

Application Note

, C

FIGURE 2. BASIC AMPLIFIER CONFIGURATION

, connect to

0Ω

10kΩ

RIN-

RIN+

and

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

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

RREF(A,B)+

100kΩ

10kΩ

IN-

IN+

0Ω

additional power supply filtering, or to reduce the voltage

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

high frequency noise. Anti-reverse diodes D

diode D

reversal.

Amplifier Configuration

The schematic of each of the 2 op amps 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 2.4VDC to +5VDC

supply, or from dual supplies from ±1.2VDC to ±2.5VDC.

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

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

and C

0.1μF

C10

August 2, 2007

V+

V-

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

protect the circuit in the case of accidental polarity

R40 0

TO OTHER CHANNEL

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

FIGURE 1. POWER SUPPLY CIRCUIT

, are connected close to the part to filter out

4.7μF

4.7UF

C12

1/2 ISL2828x

R46

0Ω

MMBZ52xxB

(Figure 2)

10kΩ

DNP

C16

4.7μF

4.7UF

C17

R49

, D

VOUT(x)

AN1344.0

and zener

V+

0.1UF

0.1μF

C18

Related parts for ISL28288EVAL1Z

ISL28288EVAL1Z Summary of contents

Page 1

... MMBZ52xxB C16 C16 + DNP VP FIGURE 1. POWER SUPPLY CIRCUIT (Figure 2) 1/2 ISL2828x 0Ω VOUT(x) 10kΩ TO OTHER CHANNEL | Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2007. All Rights Reserved and zener V+ V+ C18 C18 0.1μF 0.1UF ...

Page 2

... DIODE-RECTIFIER, SMD, SOD-123, 2P, 40V, 0.5A, ROHS D3 DIODE-ZENER, SMD, SOD-123, 2P, 5.1V, 350mV, ROHS U1 (ISL28286EVAL1Z) ISL28286FAZ, IC-RAIL-TO-RAIL PRECISION OP AMP, 16P, QSOP, ROHS U1 (ISL28288EVAL1Z) ISL28288FAZ, IC-RAIL-TO-RAIL PRECISION OP AMP, 16P, QSOP, ROHS R2-R5, R8-R10, R12, R16-R19, RESISTOR,SMD, 0603, 0.1%, MF, DNP-PLACE HOLDER R24-R27, R29, R31, R34-R39, ...

Page 3

ISL2828xEVAL1Z Top View 3 Application Note 1344 AN1344.0 August 2, 2007 ...

Page 4

... ISL2828xEVAL1Z Schematic Diagram 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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