|
|
PDF ISL28256 Data sheet ( Hoja de datos )
| Número de pieza | ISL28256 | |
| Descripción | (ISL28156 / ISL28256) 39uA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL28256 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
®
Data Sheet
ISL28156, ISL28256
February 27, 2007
FN6154.2
39µA Micropower Single and Dual
Precision Rail-to-Rail Input-Output (RRIO)
Low Input Bias Current Op Amps
The ISL28156 and ISL28256 are micropower precision
operational amplifiers optimized for single supply operation
at 5V and can operated down to 2.4V.
These devices feature an Input Range Enhancement Circuit
(IREC) which enables them to maintain CMRR performance
for input voltages greater than the positive supply. The input
signal is capable of swinging 0.5V above a 5.0V supply (0.25
for a 2.5V supply) and to within 10mV from ground. The
output operation is rail-to-rail.
The 1/f corner of the voltage noise spectrum is at 1kHz. This
results in low frequency noise performance which can only
be found on devices with an order of magnitude higher
supply current.
ISL28156 and ISL28256 can be operated from one lithium
cell or two Ni-Cd batteries. The input range includes both
positive and negative rail. The output swings to both rails.
Ordering Information
www.DataSheet4U.com
PART NUMBER PART
(Note)
MARKING
TAPE
AND
REEL
PACKAGE PKG.
(Pb-Free) DWG. #
ISL28156FHZ-T7 GABV
7” (3k pcs) 6 Ld SOT-23 MDP0038
ISL28156FBZ 28156FBZ 97/Tube 8 Ld SOIC MDP0027
ISL28156FBZ-T7 28156FBZ 7” (1k pcs) 8 Ld SOIC MDP0027
Coming Soon
ISL28256FAZ-T7
7” (1k pcs) 8 Ld SOIC MDP0027
Coming Soon
ISL28256FAZ-T7
7” 8 Ld MSOP MDP0043
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Features
• 39µA typical supply current
• 5nA max input bias current
• 250kHz gain bandwidth product (AV = 1)
• 2.4V to 5.5V single supply voltage range
• Rail-to-rail input and output
• Enable pin (ISL28156 only)
• Pb-free plus anneal available (RoHS compliant)
Applications
• Battery- or solar-powered systems
• 4mA to 20mA current loops
• Handheld consumer products
• Medical devices
• Sensor amplifiers
• ADC buffers
• DAC output amplifiers
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006, 2007. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL28156, ISL28256
Typical Performance Curves (Continued)
3
2 VOUT = 10mV
1 VOUT = 50mV
0
-1
-2
VOUT = 1V
VOUT = 100mV
-3
-4
-5
-6 AV = 1
-7
RL = 1k
CL = 16.3pF
-8
1k
10k
100k
FREQUENCY (Hz)
FIGURE 5. GAIN vs FREQUENCY vs VOUT
1M
1
0
-1 VOUT = 1V
-2
-3
VOUT = 10mV
-4
-5
-6
-7 AV = 1
-8 RL = 10k
CL = 16.3pF
-9
1k
VOUT = 50mV
VOUT = 100mV
10k 100k
FREQUENCY (Hz)
FIGURE 6. GAIN vs FREQUENCY vs VOUT
1M
1
0
-1 VOUT = 1V
-2
-3
-4
-5
-6
-7 AV = 1
-8
RL = 100k
CL = 16.3pF
-9
1k
10k
VOUT = 10mV
VOUT = 50mV
VOUT = 100mV
100k
1M
FREQUENCY (Hz)
FIGURE 7. GAIN vs FREQUENCY vs VOUT
10
0
AV = 1
RL = 1k
-10 CL = 16.3pF
-20 VOUT = 1VPP
VS = 2.4V
-30
PSRR-
-40
-50
-60 PSRR+
-70
-80
100
1k
10k 100k
FREQUENCY (Hz)
FIGURE 9. PSRR vs FREQUENCY; VS = 2.4V
1M
10
AV = 1
0 RL = 10k
-10 CL = 16.3pF
VCM = 1VPP
-20
VS = 2.4V
-30 VS = 5V
-40
-50
-60
-70
100
1k 10k 100k
FREQUENCY (Hz)
FIGURE 8. CMRR vs FREQUENCY
1M
10
0 AV = 1
-10
RL = 1k
CL = 16.3pF
-20 VOUT = 1VPP
-30 VS =5V
-40
-50
-60
-70
-80
-90
100
1k
PSRR-
PSRR+
10k 100k
FREQUENCY (Hz)
FIGURE 10. PSRR vs FREQUENCY; VS = 5V
1M
5 FN6154.2
February 27, 2007
5 Page 
ISL28156, ISL28256
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 ISL28256 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 36).
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 36. PREVENTING OSCILLATIONS IN UNUSED
CHANNELS
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 as follows:
TJMAX = TMAX + (θJAxPDMAXTOTAL)
(EQ. 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 as follows:
PDMAX
=
2*VS × ISMAX + (VS
-
VO
U
T
M
A
X
)
×
V-----O----U----T----M-----A----X--
RL
(EQ. 2)
11 FN6154.2
February 27, 2007
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ISL28256.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL28256 | (ISL28156 / ISL28256) 39uA Micropower Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps | Intersil Corporation |
| ISL28258 | (ISL28158 / ISL28258) Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps | Intersil Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |