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What is LF444C?

This electronic component, produced by the manufacturer "ON Semiconductor", performs the same function as "LOW POWER JFET INPUT OPERATIONAL AMPLIFIERS".


LF444C Datasheet PDF - ON Semiconductor

Part Number LF444C
Description LOW POWER JFET INPUT OPERATIONAL AMPLIFIERS
Manufacturers ON Semiconductor 
Logo ON Semiconductor Logo 


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ON Semiconductort
Low Power JFET Input
Operational Amplifiers
These JFET input operational amplifiers are designed for low power
applications. They feature high input impedance, low input bias current and
low input offset current. Advanced design techniques allow for higher slew
rates, gain bandwidth products and output swing. The LF441C device
provides for the external null adjustment of input offset voltage.
These devices are specified over the commercial temperature range. All
are available in plastic dual in–line and SOIC packages.
Low Supply Current: 200 µA/Amplifier
Low Input Bias Current: 5.0 pA
High Gain Bandwidth: 2.0 MHz
High Slew Rate: 6.0 V/µs
High Input Impedance: 1012
Large Output Voltage Swing: ±14 V
Output Short Circuit Protection
Representative Schematic Diagram
(Each Amplifier)
VCC
Inputs
J1 J2
+
Q3
Q1
Q2
Q4
R1 R2 R5
1*
5*
*Null adjustment pins for LF441 only.
Q7
D2 R3
D1
R4
Output
C1
C2
Q5 Q6
VEE
+ 5 1.5 k
1
100 k
LF441C input offset voltage
null adjust circuit
VEE
Device
LF441CD
LF441CN
LF442CD
LF442CN
LF444CD
LF444CN
ORDERING INFORMATION
Function
Operating
Temperature Range
Single
Dual
Quad
TA = 0° to +70°C
Package
SO–8
Plastic DIP
SO–8
Plastic DIP
SO–14
Plastic DIP
LF441C
LF442C
LF444C
LOW POWER
JFET INPUT
OPERATIONAL AMPLIFIERS
SEMICONDUCTOR
TECHNICAL DATA
8
1
N SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
PIN CONNECTIONS
Offset Null 1
2
Inputs 3
VEE 4
-
+
8 NC
7 VCC
6 Output
5 Offset Null
(Single, Top View)
Output 1 1
8 VCC
Inputs 1
2
1
3+
VEE 4
2
7
6
+5
Output 2
Inputs 2
(Dual, Top View)
14
1
N SUFFIX
PLASTIC PACKAGE
CASE 646
14
1
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
PIN CONNECTIONS
Output 1 1
2-
Inputs 1
3
+
VCC 4
Inputs 2
5+
6-
Output 2 7
1
2
14 Output 4
- 13
4 12
+
Inputs 4
11 VEE
+ 10
3 -9
Inputs 3
8 Output 3
(Quad, Top View)
© Semiconductor Components Industries, LLC, 2002
March, 2002 – Rev. 1
1
Publication Order Number:
LF441C/D

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LF444C equivalent
LF441C LF442C LF444C
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
-75
Figure 11. Normalized Gain Bandwidth
Product versus Temperature
VCC = +15 V
VEE = -15 V
RL = 10 k
CL = 100 pF
-50 -25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 12. Open Loop Voltage Gain and
Phase versus Frequency
20 90
Phase
10 135
0
VCC = +15 V
-10
VEE = -15 V
RL = 10 k
CL = 100 pF
-20 TA = 25°C
Gain
0.1 1.0
f, FREQUENCY (MHz)
180
225
270
10
Figure 13. Slew Rate versus Temperature
8.0
7.0
6.0
5.0 VCC = +15 V
VEE = -15 V
RL = 10 k
4.0 AV = +1.0
-75 -50 -25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 14. Total Output Distortion
versus Frequency
2.5
VCC = +15 V
2.0
VEE = -15 V
TA = 25°C
1.5
1.0
0.5
0
10
AV = 100
AV = 10
100 1.0 k
f, FREQUENCY (Hz)
10 k
100 k
Figure 15. Output Voltage Swing
versus Frequency
30
20
VCC = +15 V
10
VEE = -15 V
RL = 10 k
AV = +1.0
1% THD
TA = 25°C
0
1.0 k
10 k 100 k
f, FREQUENCY (Hz)
1.0 M
Figure 16. Open Loop Voltage
Gain versus Frequency
100
80
60
40
VCC = +15 V
20 VEE = -15 V
RL = 10 k
0 TA = 25°C
0.1 1.0
10
100 1.0 k 10 k 100 k 1.0 M 10 M
f, FREQUENCY (Hz)
http://onsemi.com
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