ISL28127MSOPEVAL1Z Intersil, ISL28127MSOPEVAL1Z Datasheet
ISL28127MSOPEVAL1Z
Manufacturer Part Number
ISL28127MSOPEVAL1Z
Description
EVAL BOARD FOR ISL28127 MSOP
Manufacturer
Intersil
Specifications of ISL28127MSOPEVAL1Z
Channels Per Ic
1 - Single
Amplifier Type
General Purpose
Output Type
Single-Ended
Slew Rate
3.6 V/µs
Current - Supply (main Ic)
2.2mA
Voltage - Supply, Single/dual (±)
4.5 V ~ 40 V, ±2.25 V ~ 20 V
Board Type
Fully Populated
Utilized Ic / Part
ISL28127
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Operating Temperature
-
Current - Output / Channel
-
-3db Bandwidth
-
ISL281X7MSOPEVAL1Z Evaluation Board User’s Guide
Introduction
The ISL281X7MSOPEVAL1Z evaluation board is a design
platform containing all the circuitry needed to
characterize critical performance parameters of the
ISL281X7 operational amplifiers in MSOP-8 package,
using a variety of user defined test circuits.
The ISL281X7 operational amplifiers feature low bias
current, low noise, and low offset and temperature drift.
Reference Documents
• ISL28107 Data Sheet,
• ISL28117 Data Sheet,
• ISL28127 Data Sheet,
Evaluation Board Key Features
The ISL281X7MSOPEVAL1Z is designed to enable the IC
to operate from a single supply, +4.5VDC to +40VDC or
from split supplies, ±2.25VDC to ±20V. 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,
VREF and Ground connections on the evaluation board.
For single supply operation, the -V and Ground pins are
May 25, 2010
AN1565.0
VCM
IN-
IN+
VREF
FN6631
FN6632
FN6633
VREF
1
GND
IN +
IN -
FIGURE 2. BASIC AMPLIFIER CONFIGURATION
1-888-INTERSIL or 1-888-468-3774
RIN+
10k
10k
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
RIN-
Ω
Ω
RREF+
100k
IN+
IN-
Application Note 1565
Ω
+
-
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 close to their respective
supplies, while two additional capacitors, C1 and C5, 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 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
establish a ground referenced input for dual supply
operation, or can be externally set to any reference level for
single supply operation. VREF should not be left floating.
All other trademarks mentioned are the property of their respective owners.
100k
RF
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Ω
VP
VM
FIGURE 1. POWER SUPPLY CIRCUIT
V+
V-
V-
4.7µF
Copyright Intersil Americas Inc. 2010. All Rights Reserved
S1AB
C2
D1
ISL281X7
0
Ω
4.7µF
S1AB
C4
D2
V+
DNP
RL
VREF
VOUT
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ISL28127MSOPEVAL1Z Summary of contents
Page 1
... VM RREF+ 100k Ω 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 C2 C4 4.7µF 4.7µF ...
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 VREF, inputs, outputs, and the amplifier feedback loops. The Inputs (Figure 3) have additional resistor and ...
Page 3
... 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 3 Application Note 1565 FIGURE 5 ...
Page 4
DNP DNP 4.7UF 4.7UF S1AB S1AB IN- IN+ NODE OUT R8 R10 ...