Datasheet

LF155, LF156, LF355, LF356, LF357
SNOSBH0C –MAY 2000–REVISED MARCH 2013 www.ti.com
DC Electrical Characteristics
LF256/7
LF155/6 LF355/6/7
LF356B
Symbol Parameter Conditions Units
Min Typ Max Min Typ Max Min Typ Max
V
OS
Input Offset Voltage R
S
=50Ω, T
A
=25°C 3 5 3 5 3 10 mV
Over Temperature 7 6.5 13 mV
ΔV
OS
/ΔT Average TC of Input R
S
=50Ω
5 5 5 μV/°C
Offset Voltage
ΔTC/ΔV
OS
Change in Average TC R
S
=50Ω,
(2)
μV/°C
0.5 0.5 0.5
with V
OS
Adjust per mV
I
OS
Input Offset Current T
J
=25°C,
(1) (3)
3 20 3 20 3 50 pA
T
J
≤T
HIGH
20 1 2 nA
I
B
Input Bias Current T
J
=25°C,
(1) (3)
30 100 30 100 30 200 pA
T
J
≤T
HIGH
50 5 8 nA
R
IN
Input Resistance T
J
=25°C 10
12
10
12
10
12
Ω
A
VOL
Large Signal Voltage V
S
=±15V, T
A
=25°C 50 200 50 200 25 200 V/mV
Gain
V
O
=±10V, R
L
=2k
Over Temperature 25 25 15 V/mV
V
O
Output Voltage Swing V
S
=±15V, R
L
=10k ±12 ±13 ±12 ±13 ±12 ±13 V
V
S
=±15V, R
L
=2k ±10 ±12 ±10 ±12 ±10 ±12 V
V
CM
Input Common-Mode V
S
=±15V +15.1 ±15.1 +15.1 V
±11 ±11 +10
Voltage Range
−12 −12 −12 V
CMRR Common-Mode
85 100 85 100 80 100 dB
Rejection Ratio
PSRR Supply Voltage Rejection
(4)
85 100 85 100 80 100 dB
Ratio
(1) Unless otherwise stated, these test conditions apply:
LF155/156 LF256/257 LF356B LF355/6/7
Supply Voltage, V
S
±15V ≤ V
S
≤ ±20V ±15V ≤ V
S
≤ ±20V ±15V ≤ V
S
±20V V
S
= ±15V
T
A
−55°C ≤ T
A
≤ −25°C ≤ T
A
≤ +85°C 0°C ≤ T
A
≤ +70°C 0°C ≤ T
A
≤ +70°C
+125°C
T
HIGH
+125°C +85°C +70°C +70°C
and V
OS
, I
B
and I
OS
are measured at V
CM
= 0.
(2) 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.
(3) 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.
(4) 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
LF155 LF355 LF156/256/257/356B LF356 LF357
Parameter Units
Typ Max Typ Max Typ Max Typ Max Typ Max
Supply
2 4 2 4 5 7 5 10 5 10 mA
Current
4 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LF155 LF156 LF355 LF356 LF357