LF355AH National Semiconductor, LF355AH Datasheet - Page 4

• Manufacturer Part Number: LF355AH
• Description: Series Monolithic JFET Input Operational Amplifiers
• Manufacturer: National Semiconductor

Symbol
SR
GBW
t
e
i
C
Supply Current
n
Supply Voltage V
T
T
s
n
IN
A
HIGH
DC Electrical Characteristics
AC Electrical Characteristics
Notes for Electrical Characteristics
Note 1 The maximum power dissipation for these devices must be derated at elevated temperatures and is dictated by T
T
Note 2 Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage
Note 3 Unless otherwise stated these test conditions apply
and V
Note 4 The Temperature Coefficient of the adjusted input offset voltage changes only a small amount (0 5 V C typically) for each mV of adjustment from its
original unadjusted value Common-mode rejection and open loop voltage gain are also unaffected by offset adjustment
Note 5 The input bias currents are junction leakage currents which approximately double for every 10 C increase in the junction temperature T
production test time the input bias currents measured are correlated to junction temperature In normal operation the junction temperature rises above the ambient
temperature as a result of internal power dissipation Pd T
recommended if input bias current is to be kept to a minimum
Note 6 Supply Voltage Rejection is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with common practice
Note 7 Settling time is defined here for a unity gain inverter connection using 2 k
voltage at the inverting input pin on the amplifier) to settle to within 0 01% of its final value from the time a 10V step input is applied to the inverter For the LF157
A
Note 8 Refer to RETS155AX for LF155A RETS155X for LF155 RETS156AX for LF156A RETS156X for LF156 RETS157A for LF157A and RETS157X for
LF157 military specifications
Note 9 Max Power Dissipation is defined by the package characteristics Operating the part near the Max Power Dissipation may cause the part to operate
outside guaranteed limits
Parameter
A
V
eb
The maximum available power dissipation at any temperature is P
OS
5 the feedback resistor from output to input is 2 k
Slew Rate
Gain Bandwidth
Product
Settling Time to 0 01% (Note 7)
Equivalent Input Noise R
Voltage
Equivalent Input
Current Noise
Input Capacitance
I
B
and I
Parameter
OS
S
are measured at V
LF355A 355B
LF155A 155
Typ
2
g
b
a
LF255
15V
55 C
125 C
LF155A 6A 7A
LF155 6 7
s
s
Max
V
4
T
S s g
A s
CM
LF155 6 A
LF157 A
f
f
f
f
e
e
e
e
e
S
a
Conditions
20V
e
100 Hz
1000 Hz
100 Hz
1000 Hz
0
Typ
125 C
2
100
LF355
V
Max
e
V
4
5
e
b
g
a
1
15V
25 C
85 C
j
and the output step is 10V (See Settling Time Test Circuit)
e
T
T
LF255 6 7
T
A
A
LF156A 156
Typ
LF256 356B
LF155 255
A
s
5
a
e
e
355 355B
s
V
T
S s g
jA
T
T
Typ
0 01
0 01
d
A s
2 5
25
20
e
j
j
5
4
3
Pd where
e
e
(T
a
Max
jMAX
25 C V
25 C V
20V
7
85 C
4
b
T
LF156 256
A
jA
)
LF356B
S
S
resistors for the LF155 6 It is the time required for the error voltage (the
is the thermal resistance from junction to ambient Use of a heat sink is
LF356A 356
Typ
g
0 C
a
Min
e
e
jA
7 5
5
LF355A 6A 7A
15V
70 C
or the 25 C P
s
g
g
T
15V
15V
s
A s
V
Max
10
S s g
LF156 256
a
356 356B
70 C
dMAX
0 01
0 01
Typ
1 5
12
15
12
18V
5
3
whichever is less
LF157A 157
LF257 357B
Typ
5
g
0 C
a
LF355B 6B 7B
15V
70 C
LF157 257
s
LF357B
jMAX
T
s
Max
Min
A s
30
7
V
S g
jA
a
70 C
and the ambient temperature
20V
LF357A 357
Typ
LF157 257
5
357 357B
V
0 C
a
Typ
0 01
0 01
1 5
50
20
15
12
S
3
70 C
LF355 6 7
e
J
s
Max
Due to limited
10
g
T
A s
15V
a
nV Hz
nV Hz
pA Hz
pA Hz
Units
V
V
MHz
Units
70 C
pF
mA
s
s
s