IK Semicon IL2901D Quad single supply comparator Datasheet

TECHNICAL DATA
Quad Single Supply Comparator
The IL2901 consists of four independent precision voltage
comparators with an offset voltage specification as low as 2.0
mV max for four comparators which were designed
specifically to operate from a single power supply over a wide
range of voltages.
Application areas include limit comparators, simple analog
to digital converters; pulse, square wave and time delay
generators; wide range VCO; MOS clock timers;
multivibrators and high voltage digital logic gates.
•
Single or Split Supply Operation
•
Low Input Bias Current
•
Low Input Offset Current
•
Input Common Mode Voltage Range to Gnd
•
Low Output Saturation Voltage
•
TTL and CMOS Compatible
IL2901
ORDERING INFORMATION
IL2901N Plastic
IL2901D SOIC
TA = -40° to 85° C for all packages.
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 3 = VCC
PIN 12 = GND
Rev. 01
IL2901
MAXIMUM RATINGS*
Symbol
VCC
Parameter
Value
Unit
36
±18
V
36
V
V
Power Supply Voltages
Single Supply
Split Supplies
VIDR
Input Differential Voltage Range
VICR
Input Common Mode Voltage Range (1)
-0.3 to VCC
ISC
Output Short Circuit to Ground
Continuous
IIN
Input Current, per pin (2)
TJ
Junction Temperature
Plastic Packages
Tstg
Storage Temperature
50
mA
150
°C
-65 to +150
°C
TL
Lead Temperature, 1mm from Case for 10 Seconds
260
°C
PD
Power Dissipation @TA=25°C
Plastic Package
Derate above 25°C
1.0
8.0
W
mW/°C
*
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
Notes:
1. Split Power Supplies.
2. VIN<-0.3V. This input current will only exist when voltage at any of the input leads is driven negative.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
VCC
DC Supply Voltage
TA
Operating Temperature, All Package Types
Min
Max
Unit
±2.5 or
5.0
±15 or
30
V
-40
+85
°C
This device contains protection circuitry to guard against damage due to high static voltages or electric fields.
However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this
high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND≤(VIN or
VOUT)≤VCC.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused
outputs must be left open.
Rev. 01
IL2901
DC ELECTRICAL CHARACTERISTICS (TA=-40 to +85°C)
Guaranteed Limit
Symbol
VIO
Parameter
Input Offset Voltage
Test Conditions
Min
V0=1.4V
VCC=5.0-30V;RS≤100Ω
VICR=0V - (VCC-1.5)V
-
Typ
Max
Unit
9.0
mV
5.0*
IIB
Input Bias Current
V0=1.4V
VCC=5.0-30V
VICR=0V - (VCC-1.5)V
-
400
nA
IIO
Input Offset Current
V0=1.4V
VCC=5.0-30V
VICR=0V - (VCC-1.5)V
-
±150
nA
VICR
Input Common Mode
Voltage Range
VCC=5.0-30V
0
VCC2.0V
V
Supply Current
RL=∞,VCC=5.0
-
2.0*
mA
RL=∞,VCC=30V
-
2.5*
Voltage Gain
VCC=15V, RL=15KΩ
-
200*
-
V/mV
t1
Large Signal
Response Time
VIN=TTL Logic Swing,
Vref=1.4V, VCC=5.0V,
RL=5.1KΩ, VRL=5.0V
-
300*
-
ns
t2
Response Time
VCC=5.0V, RL=5.1KΩ,
VRL=5.0V
-
1.3*
-
μs
Isink
Output Sink Current
VI(-)=1.0V, VI(+)=0V,
V0≤1.5V, VCC=5.0V
6.0*
-
-
mA
Vsat
Saturation Voltage
VI(-)=1.0V, VI(+)=0V,
Isink≤4.0mA, VCC=5.0V
-
-
700
mV
IOL
Output Leakage
Current
VI(+)=1.0V, VI(-)=0V,
V0=5.0V
V0=30V
ICC
AVOL
VIDR
Differential Input
Voltage Range
All VIN≥GND or V-Supply
(if used)
nA
0.1*
1000
VCC*
V
*=@25°C
Rev. 01
IL2901
TYPICAL PERFORMANCE CHARACTERISTICS
Rev. 01
IL2901
APPLICATION NOTE
The IL2901 is high gain, wide bandwidth devices which, like most comparators, can easily
oscillate if the output lead is inadvertently allowed to capacitively couple to the inputs via stray
capacitance. This shows up only during the output voltage transition intervals as the comparator
changes states. Power supply bypassing is not required to solve this problem. Standard PC board
layout is helpful as it reduces stray input-output coupling. Reducing these input resistors to < 10 kΩ
reduces the feedback signal levels and finally, adding even a small amount (1 to 10 mV) of positive
feedback (hysteresis) causes such a rapid transition that oscillations due to stray feedback are not
possible. Simply socketing the IC and attaching resistors to the pins will cause input-output
oscillations during the small transition intervals unless hysteresis is used. If the input signal is a
pulse waveform, with relatively fast rise and fall times, hysteresis is not required.
All pins of any unused comparators should be tied to the negative supply.
The bias network of the IL2901 establishes a drain current which is independent of the magnitude
of the power supply voltage over the range of from 2 VDC to 30 VDC.
It is usually unnecessary to use a bypass capacitor across the power supply line.
The differential input voltage may be larger than V+ without damaging the device. Protection
should be provided to prevent the input voltages from going negative more than −0.3 VDC (at
25°C). An input clamp diode can be used as shown in the applications section.
TYPICAL APPLICATIONS (V+ = 5.0VDC)
Rev. 01
IL2901
TYPICAL APPLICATIONS (V+ = 5.0VDC)
TYPICAL APPLICATIONS (V+ = 15.0VDC)
Rev. 01
IL2901
TYPICAL APPLICATIONS (V+ = 15.0VDC)
Rev. 01
IL2901
TYPICAL APPLICATIONS (V+ = 15.0VDC)
Rev. 01
IL2901
TYPICAL APPLICATIONS (V+ = 15.0VDC)
Rev. 01
IL2901
TYPICAL APPLICATIONS (V+ = 15.0VDC)
Rev. 01
IL2901
SPLIT SUPPLY APPLICATIONS (V+ = 15.0VDC and V- = -15.0VDC)
Rev. 01
IL2901
Rev. 01
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