SNOSBH0C – MAY 2000 – REVISED MARCH 2013
DC Electrical Characteristics
Symbol
V
OS
ΔV
OS
/ΔT
ΔTC/ΔV
OS
I
OS
I
B
R
IN
A
VOL
Parameter
Input Offset Voltage
Average TC of Input
Offset Voltage
Change in Average TC
with V
OS
Adjust
Input Offset Current
Input Bias Current
Input Resistance
Large Signal Voltage
Gain
Conditions
Min
R
S
=50Ω, T
A
=25°C
Over Temperature
R
S
=50Ω
R
S
=50Ω,
T
J
=25°C,
T
J
≤T
HIGH
T
J
=25°C,
T
J
≤T
HIGH
T
J
=25°C
V
S
=±15V, T
A
=25°C
V
O
=±10V, R
L
=2k
Over Temperature
V
O
V
CM
CMRR
PSRR
(1)
Output Voltage Swing
Input Common-Mode
Voltage Range
Common-Mode
Rejection Ratio
Supply Voltage Rejection
Ratio
(4)
(1) (3)
(2)
LF155/6
Typ
3
Max
5
7
5
0.5
Min
LF256/7
LF356B
Typ
3
Max
5
6.5
5
0.5
20
20
100
50
3
30
10
12
50
25
200
25
15
±13
±12
±15.1
−12
100
100
±12
±10
+10
80
80
20
1
100
5
Min
LF355/6/7
Typ
3
Max
10
13
5
0.5
3
30
10
12
200
50
2
200
8
Units
mV
mV
μV/°C
μV/°C
per mV
pA
nA
pA
nA
Ω
V/mV
V/mV
(1) (3)
3
30
10
12
50
25
±12
±10
±11
85
85
±13
±12
+15.1
−12
100
100
200
V
S
=±15V, R
L
=10k
V
S
=±15V, R
L
=2k
V
S
=±15V
±12
±10
±11
85
85
±13
±12
+15.1
−12
100
100
V
V
V
V
dB
dB
Unless otherwise stated, these test conditions apply:
LF155/156
Supply Voltage, V
S
T
A
T
HIGH
(2)
(3)
LF256/257
±15V
≤
V
S
≤
±20V
−25°C ≤
T
A
≤
+85°C
+85°C
LF356B
±15V
≤
V
S
±20V
0°C
≤
T
A
≤
+70°C
+70°C
LF355/6/7
V
S
= ±15V
0°C
≤
T
A
≤
+70°C
+70°C
±15V
≤
V
S
≤
±20V
−55°C ≤
T
A
≤
+125°C
+125°C
(4)
and V
OS
, I
B
and I
OS
are measured at V
CM
= 0.
The Temperature Coefficient of the adjusted input offset voltage changes only a small amount (0.5μV/°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.
The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction temperature,
T
J
. Due to limited 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
J
= T
A
+
θ
JA
Pd where
θ
JA
is
the thermal resistance from junction to ambient. Use of a heat sink is recommended if input bias current is to be kept to a minimum.
Supply Voltage Rejection is measured for both supply magnitudes increasing or decreasing simultaneously, in accordance with common
practice.
DC Electrical Characteristics
T
A
= T
J
= 25°C, V
S
= ±15V
Parameter
Supply
Current
LF155
Typ
2
Max
4
Typ
2
LF355
Max
4
LF156/256/257/356B
Typ
5
Max
7
Typ
5
LF356
Max
10
Typ
5
LF357
Max
10
Units
mA
4
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links:
TI [ TEXAS INSTRUMENTS ]
