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PDF ISL28196 Data sheet ( Hoja de datos )
| Número de pieza | ISL28196 | |
| Descripción | (ISL28196 / ISL28197) Rail-to-Rail Input/Output (RRIO) Comparators | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISL28196 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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Data Sheet
ISL28196, ISL28197
November 5, 2007
FN6152.3
Ultra-Small, 800nA and 2.5µA Single
Supply, Rail-to-Rail Input/Output (RRIO)
www.Cdaotamshepeta4ur.acotomrs
The ISL28196 and ISL28197 are micropower comparators
optimized for low-power applications. The parts are
designed for single-supply operation from 1.8V to 5.5V. The
ISL28197 typically consumes 800nA of supply current and
the ISL28196 typically consumes 2.5µA of supply current.
Both parts feature rail-to-rail input and output swing (RRIO),
allowing for maximum battery usage. The ISL28196 features
a propagation delay of 150µs and the ISL28197 features a
propagation delay of 0.6ms.
Equipped with an ENABLE pin (EN), both parts draw
typically 2nA when off. The combination of small footprint,
low power, single supply, and rail-to-rail operation makes
them ideally suited for all battery operated devices.
Pinouts
ISL28196, ISL28197
(6 LD SOT-23)
TOP VIEW
OUT 1
6 V+
GND 2
5 EN
+-
IN+ 3
4 IN-
ISL28196, ISL28197
(6 LD 1.6X1.6X0.5 µTDFN)
TOP VIEW
IN- 1
6 V+
GND 2
5 EN
IN+ 3
4 OUT
Features
• Typical Supply Current 800nA (ISL28197)
• Typical Supply Current 2.5µA (ISL28196)
• Ultra-Low Single-Supply Operation Down to +1.8V
• Rail-to-Rail Input/Output Voltage Range (RRIO)
• 150µs Typical Propagation Delay (ISL28196)
• 0.6ms Typical Propagation Delay (ISL28197)
• ENABLE Pin Feature
• Push-Pull Output
• -40°C to +125°C Operation
• Pb-Free (RoHS Compliant)
Applications
• 2-Cell Alkaline Battery-Powered/Portable Systems
• Window Comparators
• Threshold Detectors/Discriminators
Ordering Information
PART
NUMBER
(Note 3)
PART
MARKING
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL28196FHZ-T7* GABM
(Note 1)
6 Ld SOT-23
Tape and Reel
MDP0038
Coming Soon
M5
ISL28196FRUZ-T7*
(Note 2)
6 Ld 1.6x1.6x0.5 µTDFN L6.1.6x1.6A
Tape and Reel
ISL28197FHZ-T7* GABN
(Note 1)
6 Ld SOT-23
Tape and Reel
MDP0038
Coming Soon
M6
ISL28197FRUZ-T7*
(Note 2)
6 Ld 1.6x1.6x0.5 µTDFN L6.1.6x1.6A
Tape and Reel
NOTES:
1. These Intersil Pb-free plastic packaged products employ special Pb-
free material sets; molding compounds/die attach materials and
100% matte tin plate PLUS ANNEAL - e3 termination finish, which is
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.
2. These Intersil Pb-free plastic packaged products employ special Pb-
free material sets; molding compounds/die attach materials and
NiPdAu plate - e4 termination finish, which is 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.
3. Please refer to TB347 for details on reel specifications.
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. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL28196, ISL28197
Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, unless otherwise specified. (Continued)
25
RL = 10Ω
25
RL = 10Ω
20
SINKING
20
SINKING
15
www.datasheet4u.com
10
SOURCING
15
10
SOURCING
55
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
FIGURE 11. ISL28196 SHORT CIRCUIT CURRENT vs SUPPLY
VOLTAGE
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
FIGURE 12. ISL28197 SHORT CIRCUIT CURRENT vs SUPPLY
VOLTAGE
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
1.5
2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
FIGURE 13. ISL28196 ENABLE THRESHOLD VOLTAGE vs
SUPPLY VOLTAGE
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
FIGURE 14. ISL28197 ENABLE THRESHOLD VOLTAGE vs
SUPPLY VOLTAGE
100
90
80
70
60
50
40
30
20
10
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
FIGURE 15. ISL28196 ENABLE TO OUTPUT DELAY TIME vs
SUPPLY VOLTAGE
5
80
70
60
50
40
30
20
10
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
SUPPLY VOLTAGE (V)
FIGURE 16. ISL28197 ENABLE TO OUTPUT DELAY TIME vs
SUPPLY VOLTAGE
FN6152.3
November 5, 2007
5 Page 
ISL28196, ISL28197
Break-Before-Make Operation of the Output
The output circuit has a break-before-make response. This
means that the P-Channel turns off before the N-Channel
turns on during a high to low transition of the output
(reference Figure 43). Likewise, the N-Channel turns off
before the P-Channel turns on during a low to high transition.
This results in different propagation delay times depending
www.udaptoanshweehte4rue.ctohme output load resistor is tied to. If the load
resistor is tied to ground, (Figure 44A) then the propagation
delay is controlled by the P-Channel. For a high to low
transition the propagation delay does not include the
additional break-before-make time because the load resistor
will pull the output low once the P-Channel has turned off.
BREAK-BEFORE-MAKE
ISL28196 AND ISL28197
OUTPUT STAGE
v+
P-CHANNEL
VOUT
N-CHANNEL
FIGURE 43. MAKE-BEFORE-BREAK ACTION OF THE
OUTPUT STAGE
During the low to high transition, however, if the load resistor
is tied to ground, then the additional break-before-make time
is added to the propagation delay time because the output
won’t pull high until the P-Channel turns on.
V+
+
- VOUT
RL
FIGURE 44A. RL TO GND
V+
+ RL
- VOUT
FIGURE 44B. RL TO V+
FIGURE 44. CONNECTION OF RL TO GND AND V+
If the load resistor is tied to V+ (Figure 44B) then the
propagation delay is controlled by the N-Channel. For this
condition, the additional delay time is added to the high to
low transition because the output won’t pull low until the
N-Channel turns on. Figures 3 through 10 show the
differences in propagation delay depending upon where the
load is tied.
Propagation Delay
The input to output propagation delay has a dependency on
power supply voltage, overdrive and whether the output is
sourcing or sinking current. Figures 3 and 5 show a
decreasing time propagation delay vs supply voltage for the
ISL28196 and Figure 4 shows a similar behavior for the
ISL28197. The output break-before-make mechanism
results in a difference in propagation delay, depending on
whether the output stage NMOS and PMOS are sourcing or
sinking current. This delay difference is shown in the figures
as a function of where the load is terminated (+V or -V) and
also as a function of supply voltage. The dependence of
propagation delay as a function of power supply voltage and
input overdrive (from 5mV to 1V) is shown in Figures 7 and 9
for the ISL28196, and Figures 8 and 10 for the ISL28197.
Enable Feature
Both parts offer an EN pin, which enables the device when
pulled high. The enable threshold is referenced to the -V
terminal and has a level proportional to the total supply
voltage (reference Figures 13 and 14 for EN Threshold vs
Supply Voltage). The enable circuit has a delay time that
changes as a function of supply voltage. Figures 23 through
26 show the effect of supply voltage on the enable and
disable times. For supply voltages less than 3V, it is
recommended that the user account for the increase
enable/disable delay time.
In the disabled state (output in a high impedance state), the
supply current is reduced to a typical of only 2nA. By
disabling the devices, multiple 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 should never be left floating. The EN pin
should be connnected directly to the V+ supply when not in
use.
Proper Layout Maximizes Performance
To achieve the maximum performance of the high input
impedance, care should be taken in the circuit board layout.
The PC board surface must remain clean and free of
moisture to avoid leakage currents between adjacent traces.
Surface coating of the circuit board will reduce surface
moisture and provide a humidity barrier, reducing parasitic
resistance on the board. When input leakage current is a
concern, the use of guard rings around the comparator
inputs will further reduce leakage currents.
11 FN6152.3
November 5, 2007
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ISL28196.PDF ] | |
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