Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

ISL28166_0808 Fiches technique(PDF) 10 Page - Intersil Corporation

No de pièce ISL28166_0808
Description  39關A Micropower Single and Dual Rail-to-Rail Input-Output Low Input Bias Current (RRIO) Op Amps
Download  13 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  INTERSIL [Intersil Corporation]
Site Internet  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL28166_0808 Fiches technique(HTML) 10 Page - Intersil Corporation

Back Button ISL28166_0808 Datasheet HTML 5Page - Intersil Corporation ISL28166_0808 Datasheet HTML 6Page - Intersil Corporation ISL28166_0808 Datasheet HTML 7Page - Intersil Corporation ISL28166_0808 Datasheet HTML 8Page - Intersil Corporation ISL28166_0808 Datasheet HTML 9Page - Intersil Corporation ISL28166_0808 Datasheet HTML 10Page - Intersil Corporation ISL28166_0808 Datasheet HTML 11Page - Intersil Corporation ISL28166_0808 Datasheet HTML 12Page - Intersil Corporation ISL28166_0808 Datasheet HTML 13Page - Intersil Corporation  
Zoom Inzoom in Zoom Outzoom out
 10 / 13 page
background image
10
FN6155.4
August 29, 2008
Applications Information
Introduction
The ISL28166 is a single BiMOS rail-to-rail input, output
(RRIO) operational amplifier with an enable feature. The
ISL28266 is a dual version without the enable feature. Both
devices are designed to operate from single supply (2.4V to
5.0V) or dual supplies (±1.2V to ±2.5V) while drawing only
39µA of supply current per amplifier. This combination of low
power and precision performance makes this device suitable
for a variety of low power applications including battery
powered systems.
Rail-to-Rail Input/Output
These devices feature bi-polar inputs which have an input
common mode range that extends to the rails, and CMOS
outputs that can typically swing to within about 4mV of the
supply rails with a 100k
Ω load. The NMOS sinks current to
swing the output in the negative direction. The PMOS sources
current to swing the output in the positive direction.
Input Protection
All input terminals have internal ESD protection diodes to both
positive and negative supply rails, limiting the input voltage to
within one diode beyond the supply rails. They also contain
back-to-back diodes across the input terminals. For
applications where the input differential voltage is expected to
exceed 0.5V, external series resistors must be used to ensure
the input currents never exceed 5mA (Figure 34).
Enable/Disable Feature
The ISL28166 offers an EN pin that disables the device
when pulled up to at least 2.0V. In the disabled state (output
in a high impedance state), the part consumes typically
10µA. By disabling the part, multiple ISL28166 parts can be
connected together as a MUX. In this configuration, the
outputs are tied together in parallel and a channel can be
selected by the EN pin. The EN pin also has an internal
pull-down. If left open, the EN pin will pull to the negative rail
and the device will be enabled by default.
The loading effects of the feedback resistors of the disabled
amplifier must be considered when multiple amplifier outputs
are connected together.
Using Only One Channel
The ISL28266 is a dual op amp. If the application only
requires one channel, the user must configure the unused
channel to prevent it from oscillating. The unused channel
will oscillate if the input and output pins are floating. This will
result in higher than expected supply currents and possible
noise injection into the channel being used. The proper way
to prevent this oscillation is to short the output to the
negative input and ground the positive input (as shown in
Figure 35).
Current Limiting
These devices have no internal current-limiting circuitry. If
the output is shorted, it is possible to exceed the Absolute
Maximum Rating for output current or power dissipation,
potentially resulting in the destruction of the device.
Power Dissipation
It is possible to exceed the +125°C maximum junction
temperatures under certain load and power-supply
conditions. It is therefore important to calculate the
maximum junction temperature (TJMAX) for all applications
to determine if power supply voltages, load conditions, or
package type need to be modified to remain in the safe
operating area. These parameters are related in Equation 1:
where:
•PDMAXTOTAL is the sum of the maximum power
dissipation of each amplifier in the package (PDMAX)
•PDMAX for each amplifier can be calculated using
Equation 2:
where:
•TMAX = Maximum ambient temperature
θJA = Thermal resistance of the package
•PDMAX = Maximum power dissipation of 1 amplifier
•VS = Supply voltage
•IMAX = Maximum supply current of 1 amplifier
•VOUTMAX = Maximum output voltage swing of the
application
•RL = Load resistance
FIGURE 34. INPUT CURRENT LIMITING
-
+
RIN
RL
VIN
VOUT
FIGURE 35. PREVENTING OSCILLATIONS IN UNUSED
CHANNELS
-
+
T
JMAX
T
MAX
θ
JAxPDMAXTOTAL
()
+
=
(EQ. 1)
PD
MAX
2*V
S
I
SMAX
V
S
(
- V
OUTMAX )
V
OUTMAX
R
L
----------------------------
×
+
×
=
(EQ. 2)
ISL28166, ISL28266


Numéro de pièce similaire - ISL28166_0808

FabricantNo de pièceFiches techniqueDescription
logo
Intersil Corporation
ISL28166 INTERSIL-ISL28166_08 Datasheet
824Kb / 13P
   39關A Micropower Single and Dual Rail-to-Rail Input-Output Low Input Bias Current (RRIO) Op Amps
More results

Description similaire - ISL28166_0808

FabricantNo de pièceFiches techniqueDescription
logo
Intersil Corporation
ISL28166 INTERSIL-ISL28166_08 Datasheet
824Kb / 13P
   39關A Micropower Single and Dual Rail-to-Rail Input-Output Low Input Bias Current (RRIO) Op Amps
ISL28156 INTERSIL-ISL28156_08 Datasheet
820Kb / 13P
   39關A Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
ISL28166 INTERSIL-ISL28166 Datasheet
793Kb / 12P
   39uA Micropower Single and Dual Rail-to-Rail Input-Output Low Input Bias Current (RRIO) Op Amps
ISL28156 INTERSIL-ISL28156 Datasheet
822Kb / 14P
   39uA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
ISL28168 INTERSIL-ISL28168 Datasheet
851Kb / 16P
   34關A Micro-power Single and Dual Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
ISL28158 INTERSIL-ISL28158 Datasheet
854Kb / 16P
   34關A Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
logo
Renesas Technology Corp
ISL28166 RENESAS-ISL28166 Datasheet
965Kb / 11P
   39μA Micropower Rail-to-Rail Input-Output Low Input Bias Current (RRIO) Op Amp
January 16, 2014
logo
Intersil Corporation
ISL28158 INTERSIL-ISL28158_08 Datasheet
870Kb / 17P
   Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
logo
Renesas Technology Corp
ISL28158 RENESAS-ISL28158 Datasheet
1Mb / 19P
   Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps
logo
Intersil Corporation
ISL28138 INTERSIL-ISL28138 Datasheet
861Kb / 16P
   4.5MHz, Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Op Amps with Very Low Input Bias Current
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13


Fiches technique Télécharger

Go To PDF Page


Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com