ISL28227SOICEVAL2Z Intersil, ISL28227SOICEVAL2Z Datasheet
ISL28227SOICEVAL2Z
Manufacturer Part Number
ISL28227SOICEVAL2Z
Description
EVAL BOARD FOR ISL28227 SOIC
Manufacturer
Intersil
Specifications of ISL28227SOICEVAL2Z
Channels Per Ic
2 - Dual
Amplifier Type
General Purpose
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
ISL28227
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Operating Temperature
-
Output Type
-
Current - Output / Channel
-
-3db Bandwidth
-
ISL282X7SOICEVAL2Z Evaluation Board User’s Guide
Introduction
The ISL282X7SOICEVAL2Z evaluation board is a design
platform containing all the circuitry needed to
characterize critical performance parameters of the
ISL282X7 operational amplifiers in SOIC-8 package,
using a variety of user defined test circuits.
The ISL282X7 operational amplifiers feature low bias
current, low noise, and low offset and temperature drift.
Reference Documents
• ISL28207 Data Sheet,
• ISL28217 Data Sheet,
• ISL28227 Data Sheet,
Evaluation Board Key Features
The ISL282X7SOICEVAL2Z 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 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 (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
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 zero-ohm resistors. These resistors are 0Ω
November 6, 2009
AN1509.0
VCM
IN-
IN+
VREF
FN6631
FN6632
FN6633
VREF
1
GND
IN +
IN -
FIGURE 2. BASIC AMPLIFIER CONFIGURATION
1-888-INTERSIL or 1-888-352-6832
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 1509
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.
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
J6
VP
VM
FIGURE 1. POWER SUPPLY CIRCUIT
V+
V-
V-
0.01µF
1µF
C3
C2
J8
Copyright Intersil Americas Inc. 2009. All Rights Reserved
D1
ISL282X7 (1/2)
0.01µF
0
Ω
J11
1µF
C4
C5
V+
J12
DNP
RL
J13
VREF
VOUT
J14
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ISL28227SOICEVAL2Z 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 1-888-352-6832 Intersil (and design registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. J11 VREF V+ J12 J8 J13 C2 C4 1µ ...
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 capacitor, ...
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 1509 FIGURE 5 ...
Page 4
IN- IN+ NODE R10 DNP R4 R11 10k DNP J2 R2 DNP J3 R7 DNP J4 R8 DNP FIGURE 6. ISL282X7SOICEVAL2Z SCHEMATIC DIAGRAM V- V+ VREF C2 C4 1µF 1µF D1 CLOSE TO DUT C3 C5 0.01µF ...