Order this document by LF441C/D
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
LF441C
LF442C
LF444C
LOW POWER
JFET INPUT
OPERATIONAL AMPLIFIERS
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
•
•
•
Low Input Bias Current: 5.0 pA
High Gain Bandwidth: 2.0 MHz
High Slew Rate: 6.0 V/µs
High Input Impedance: 1012
Ω
Large Output Voltage Swing:
±14
V
Output Short Circuit Protection
8
1
8
1
N SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
Representative Schematic Diagram
(Each Amplifier)
VCC
PIN CONNECTIONS
Offset Null
Inputs
VEE
R4
Output
Output 1
Inputs 1
1
2
3
4
8
1
2
3
4
8
–
+
7
6
5
Q7
J1
Inputs
+
Q3
Q1
Q2
Q4
C1
C2
Q5
Q6
J2
D2
R3
D1
NC
VCC
Output
Offset Null
(Single, Top View)
1
2
–
+
7
VCC
Output 2
Inputs 2
VEE
–
+
5
6
(Dual, Top View)
R1
R2
R5
VEE
5
*
+
1
5
1.5 kΩ
VEE
100 kΩ
14
1
1
1
*
14
*Null adjustment pins for LF441 only.
LF441C input offset voltage
null adjust circuit
N SUFFIX
PLASTIC PACKAGE
CASE 646
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
PIN CONNECTIONS
ORDERING INFORMATION
Device
LF441CD
LF441CN
LF442CD
LF442CN
LF444CD
LF444CN
Function
Single
Dual
Quad
Operating
Temperature Range
Package
SO–8
Plastic DIP
TA = 0° to +70°C
70°C
SO–8
Plastic DIP
SO–14
Plastic DIP
Output 1
Inputs 1
VCC
Inputs 2
6
1
2
3
14
Output 4
Inputs 4
–
1
4
–
+
13
12
11
+
4
5
VEE
Inputs 3
+
–
2
3
+
–
10
9
8
Output 2
7
Output 3
(Quad, Top View)
©
Motorola, Inc. 1996
Rev 0
MOTOROLA ANALOG IC DEVICE DATA
1
LF441C LF442C LF444C
MAXIMUM RATINGS
Rating
Supply Voltage (from VCC to VEE)
Input Differential Voltage Range (Note 1)
Input Voltage Range (Notes 1 and 2)
Output Short Circuit Duration (Note 3)
Operating Junction Temperature (Note 3)
Storage Temperature Range
Symbol
VS
VIDR
VIR
tSC
TJ
Tstg
Value
+36
±30
±15
Indefinite
+150
–60 to +150
Unit
V
V
V
sec
°C
°C
NOTES:
1. Differential voltages are at the noninverting input terminal with respect to the inverting
input terminal.
2. The magnitude of the input voltage must never exceed the magnitude of the supply
or 15 V, whichever is less.
3. Power dissipation must be considered to ensure maximum junction temperature (TJ)
is not exceeded (see Figure 1).
DC ELECTRICAL CHARACTERISTICS
(VCC = +15 V, VEE = –15 V, TA = 0° to 70°C, unless otherwise noted.)
Characteristic
Input Offset Voltage (RS = 10 kΩ, VO = 0 V)
Single: TA = +25°C
TA = 0° to +70°C
Dual:
TA = +25°C
TA = 0° to +70°C
Quad: TA = +25°C
TA = 0° to +70°C
Average Temperature Coefficient of Offset Voltage
(RS = 10 kΩ, VO = 0 V)
Input Offset Current (VCM = 0 V, VO = 0 V)
TA = +25°C
TA = 0° to +70°C
Input Bias Current (VCM = 0 V, VO = 0 V)
TA = +25°C
TA = 0° to +70°C
Common Mode Input Voltage Range (TA = +25°C)
Large Signal Voltage Gain (VO =
±10
V, RL = 10 kΩ)
TA = +25°C
TA = 0° to +70°C
Output Voltage Swing (RL = 10 kΩ)
Common Mode Rejection (RS
≤
10 kΩ, VCM = VICR, VO = 0 V)
Power Supply Rejection (RS = 100
Ω,
VCM = 0 V, VO = 0 V)
Power Supply Current (No Load, VO = 0 V)
Single
Dual
Quad
Symbol
VIO
–
–
–
–
–
–
∆V
IO/∆T
IIO
–
–
IIB
–
–
VICR
AVOL
25
15
VO +
VO –
CMR
PSR
ID
–
–
–
200
400
800
250
500
1000
+12
–
70
70
60
–
+14
–14
86
84
–
–
–
–12
–
–
V
dB
dB
µA
–
–11
3.0
–
+14.5
–12
100
3.0
+11
–
pA
nA
V
V/mV
0.5
–
50
1.5
pA
nA
–
3.0
–
3.0
–
3.0
–
10
5.0
7.5
5.0
7.5
10
12
–
µV/°C
Min
Typ
Max
Unit
mV
2
MOTOROLA ANALOG IC DEVICE DATA
LF441C LF442C LF444C
AC ELECTRICAL CHARACTERISTICS
(VCC = +15 V, VEE = –15 V, TA = +25°C, unless otherwise noted.)
Characteristic
Slew Rate (Vin = –10 V to +10 V, RL = 10 kΩ, CL = 10 pF, AV = +1.0)
Settling Time
(AV = –1.0, RL = 10 kΩ, VO = 0 V to +10 V)
Gain Bandwidth Product (f = 200 kHz)
To within 10 mV
To within 1.0 mV
Symbol
SR
ts
GBW
en
in
Ri
CS
Min
0.6
–
–
0.6
–
–
–
–
Typ
6.0
1.6
2.2
2.0
47
0.01
1012
120
Max
–
–
–
–
–
–
–
–
Unit
V/
µs
µs
MHz
nV/
√
Hz
pA/
√
Hz
Ω
dB
Equivalent Input Noise Voltage (RS = 100
Ω,
f = 1.0 kHz)
Equivalent Input Noise Current (f = 1.0 kHz)
Input Resistance
Channel Separation (f = 1.0 Hz to 20 kHz)
Figure 1. Maximum Power Dissipation versus
Temperature for Package Variations
PD, MAXIMUM POWER DISSIPATION (mW)
2400
2000
1600
1200
800
400
0
–55 –40 –20
8 & 14 Pin Plastic
Package
SO–14
SO–8
IIB , INPUT BIAS CURRENT (pA)
20
Figure 2. Input Bias Current versus
Input Common Mode Voltage
VCC = +15 V
VEE = –15 V
TA = 25°C
15
10
5.0
0
20
40
60
80
100 120 140
160
0
–10
–5.0
0
5.0
10
TA, AMBIENT TEMPERATURE (°C)
VICR, INPUT COMMON MODE VOLTAGE (V)
Figure 3. Input Bias Current versus Temperature
1000
IIB,INPUT BIAS CURRENT (nA)
100
10
1.0
0.1
0.01
VCC = +15 V
VEE = –15 V
VCM = 0 V
ID, SUPPLY CURRENT PER AMPLIFIER (
µ
A)
300
260
220
Figure 4. Supply Current versus Supply Voltage
125°C
25°C
180
140
100
0
5.0
10
– 55°C
0.001
–55
–25
0
25
50
75
100
125
15
20
25
TA, AMBIENT TEMPERATURE (°C)
VCC,
VEE
,
SUPPLY VOLTAGE (V)
MOTOROLA ANALOG IC DEVICE DATA
3
LF441C LF442C LF444C
Figure 5. Positive Input Common Mode Voltage
Range versus Positive Supply Voltage
+VICR, POSITIVE INPUT COMMON MODE
VOLTAGE RANGE (V)
–VICR,NEGATIVE INPUT COMMON MODE
VOLTAGE RANGE (V)
20
–55°C
≤
TA
≤
125°C
–20
–55°C
≤
TA
≤
125°C
Figure 6. Negative Input Common Mode Voltage
Range versus Negative Supply Voltage
15
–15
10
–10
5.0
–5.0
0
0
5.0
10
15
VCC, POSITIVE SUPPLY VOLTAGE (V)
20
0
0
–5.0
–10
–15
VEE, NEGATIVE SUPPLY VOLTAGE (V)
–20
Figure 7. Output Voltage versus Output
Source Current
20
VO, OUTPUT VOLTAGE (V)
–20
VCC = +15 V
VEE = –15 V
VO, OUTPUT VOLTAGE (V)
–15
125°C
– 55°C
10
25°C
Figure 8. Output Voltage versus
Output Sink Current
VCC = +15 V
VEE = –15 V
– 55°C
15
–10
125°C
25°C
5.0
–5.0
0
0
1.0
2.0
3.0
4.0
5.0
6.0
IO, OUTPUT SOURCE CURRENT (mA)
7.0
8.0
0
0
2.0
4.0
6.0
8.0 10 12
14 16
–IO, OUTPUT SINK CURRENT (mA)
18
20
Figure 9. Output Voltage Swing
versus Supply Voltage
40
VO, OUTPUT VOLTAGE SWING (Vp–p )
35
30
25
20
15
10
5.0
0
0
2.0
4.0
6.0
8.0
10
12
VCC,
VEE
,
SUPPLY VOLTAGE (V)
14
16
1.0 k
VO, OUTPUT VOLTAGE SWING (Vp–p )
RL = 10 kΩ
–55°C
≤
TA
≤
125°C
28
26
24
22
20
18
16
Figure 10. Output Voltage Swing
versus Load Resistance
VCC = +15 V
VEE = –15 V
TA = 25°C
2.0 k
3.0 k
4.0 k
RL, LOAD RESISTANCE (Ω)
6.0 k
8.0 k 10 k
4
MOTOROLA ANALOG IC DEVICE DATA
LF441C LF442C LF444C
Figure 11. Normalized Gain Bandwidth
Product versus Temperature
VCC = +15 V
VEE = –15 V
RL = 10 kΩ
CL = 100 pF
AVOL , OPEN LOOP VOLTAGE GAIN (dB)
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
–75
–50
–25
0
25
50
75
100
125
20
Phase
10
0
–10
–20
0.1
VCC = +15 V
VEE = –15 V
RL = 10 kΩ
CL = 100 pF
TA = 25°C
1.0
f, FREQUENCY (MHz)
Gain
135
180
225
270
10
GBW, NORMALIZED GAIN BANDWIDTH PRODUCT
Figure 12. Open Loop Voltage Gain and
Phase versus Frequency
90
φ,
EXCESS PHASE (DEGREES)
TA, AMBIENT TEMPERATURE (°C)
Figure 13. Slew Rate versus Temperature
8.0
THD, OUTPUT DISTORTION (%)
SR, SLEW RATE (V/
µs
)
2.5
2.0
1.5
1.0
Figure 14. Total Output Distortion
versus Frequency
VCC = +15 V
VEE = –15 V
TA = 25°C
7.0
6.0
5.0
4.0
–75
VCC = +15 V
VEE = –15 V
RL = 10 kΩ
AV = +1.0
–50
–25
0
25
50
75
TA, AMBIENT TEMPERATURE (°C)
100
125
AV = 100
0.5
0
10
100
1.0 k
f, FREQUENCY (Hz)
10 k
100 k
AV = 10
Figure 15. Output Voltage Swing
versus Frequency
A VOL, OPEN LOOP VOLTAGE GAIN (dB)
VO, OUTPUT VOLTAGE SWING (Vp–p )
100
80
60
Figure 16. Open Loop Voltage
Gain versus Frequency
30
20
VCC = +15 V
VEE = –15 V
RL = 10 kΩ
AV = +1.0
1% THD
TA = 25°C
1.0 k
10 k
100 k
1.0 M
f, FREQUENCY (Hz)
40
20
0
VCC = +15 V
VEE = –15 V
RL = 10 kΩ
TA = 25°C
0.1
1.0
10
100
1.0 k
10 k
100 k
1.0 M
10 M
f, FREQUENCY (Hz)
10
0
MOTOROLA ANALOG IC DEVICE DATA
5
stm32/stm8
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