If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Input to Output Voltage (Note 2)
Input Voltage
Output Short-Circuit to GND
(Note 3)
Flag Output Voltage
Storage Temperature Range
Lead Temperature
(Soldering, 10 seconds)
36V (
±
18V)
±
7V
±
Vsupply
Continuous
GND
≤
Vflag
≤
+Vsupply
−65˚C to +150˚C
260˚C
ESD Tolerance (Note 9)
θ
JA
(Note 4)
H Package
N Package
Maximum Junction
Temperature (T
J
)
Operating Temperature Range
LM6125
LM6225
LM6325
Operating Supply Voltage Range
±
1500V
150˚C/W
40˚C/W
150˚C
−55˚C to +125˚C
−40˚C to +85˚C
0˚C to +70˚C
4.75V to
±
16V
DC Electrical Characteristics
The following specifications apply for Supply Voltage =
±
15V, V
CM
= 0, R
L
≥
100 kΩ and R
S
= 50Ω unless otherwise noted.
Boldface
limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25˚C.
Symbol
Parameter
Conditions
Typ
LM6125
Limit
(Notes 5, 10)
A
V1
A
V2
A
V3
V
OS
I
B
R
IN
C
IN
R
O
I
S1
I
S2
I
S/D
V
O1
V
O2
V
O3
V
O4
PSRR
V
OL
Voltage Gain 1
Voltage Gain 2
Voltage Gain 3
(Note 6)
Offset Voltage
Input Bias Current
Input Resistance
Input Capacitance
Output Resistance
Supply Current 1
Supply Current 2
Supply Current
in Shutdown
Output Swing 1
Output Swing 2
Output Swing 3
Output Swing 4
Power Supply
Rejection Ratio
Flag Pin Output
Low Voltage
V
±
=
±
5V to
±
15V
V
S/D
= 0V
R
L
= 1 kΩ
R
L
= 100Ω
R
L
= 50Ω
R
L
= 50Ω
V+ = 5V (Note 6)
13.5
12.7
12
1.8
70
I
OUT
=
±
10 mA
R
L
=
∞
R
L
=
∞
, V+ = 5V
R
L
=
∞
, V
±
=
±
15V
R
L
= 1kΩ, V
IN
=
±
10V
R
L
= 50Ω, V
IN
=
±
10V
R
L
= 50Ω, V+ = 5V
V
IN
= 2 V
PP
(1.5 V
PP
)
R
L
= 1 kΩ
R
L
= 1 kΩ, R
S
= 10 kΩ
R
L
= 50Ω
0.990
0.900
0.840
15
1
5
3.5
3
15
14
1.1
5
10
18
20
16
18
1.5
2.0
13.3
13
11.5
10
11
9
1.6
1.3
60
55
300
400
5
10
18
20
16
18
1.5
2.0
13.3
13
11.5
10
11
9
1.6
1.4
60
50
300
400
5
6
20
22
18
20
1.5
2.0
13.2
13
11
10
10
9
1.6
1.5
60
50
340
400
V
PP
Min
dB
Min
mV
Max
mA
Max
0.980
0.970
0.860
0.800
0.780
0.750
30
50
4
7
LM6225
Limit
(Note 5)
0.980
0.950
0.860
0.820
0.780
0.700
30
60
4
7
LM6325
Limit
(Note 5)
0.970
0.950
0.850
0.820
0.750
0.700
50
100
5
7
mV
Max
µA
Max
MΩ
pF
Ω
Max
V/V
Min
Units
±
V
Min
3
www.national.com
DC Electrical Characteristics
Symbol
Parameter
(Continued)
The following specifications apply for Supply Voltage =
±
15V, V
CM
= 0, R
L
≥
100 kΩ and R
S
= 50Ω unless otherwise noted.
Boldface
limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25˚C.
Conditions
Typ
LM6125
Limit
(Notes 5, 10)
I
OH
V
TH
V
IH
V
IL
I
IL
I
IH
I
O
Flag Pin Output
High Current
Shutdown Threshold
Shutdown Pin
Trip Point High
Shutdown Pin
Trip Point Low
Shutdown Pin
Input Low Current
Shutdown Pin
Input High Current
Bi-State Output
Current
Shutdown Pin = 0V
V
OUT
= +5V or −5V
1
V
S/D
= 5V
−0.05
V
S/D
= 0V
−0.07
V
OH
Flag Pin = 15V
(Note 6)
1.4
2.0
2.0
0.8
0.8
−10
−20
−10
−20
50
2000
2.0
2.0
0.8
0.8
−10
−20
−10
−20
50
100
2.0
2.0
0.8
0.8
−10
−20
−10
−20
100
200
0.01
10
20
LM6225
Limit
(Note 5)
10
20
LM6325
Limit
(Note 5)
10
20
µA
Max
V
V
Min
V
Max
µA
Max
µA
Max
µA
Units
AC Electrical Characteristics
The following specifications apply for Supply Voltage =
±
15V, V
CM
= 0, R
L
≥
100 kΩ and R
S
= 50Ω unless otherwise noted.
Boldface
limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25˚C.
Symbol
Parameter
Conditions
Typ
LM6125
Limit
(Note 5)
SR
1
SR
2
SR
3
BW
t
r
, t
f
t
PD
O
S
V
FT
Slew Rate 1
Slew Rate 2
Slew Rate 3
−3 dB Bandwidth
Rise Time
Fall Time
Propagation
Delay Time
Overshoot
V
IN
, V
OUT
Feedthrough
in Shutdown
C
OUT
t
SD
Output Capacitance
in Shutdown
Shutdown
Response Time
Note 2:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions.
Note 3:
During current limit, thermal limit, or electronic shutdown the input current will increase if the input to output differential voltage exceeds 8V. See Overvoltage
Protection in Application Hints.
Note 4:
The LM6125 series buffers contain current limit and thermal shutdown to protect against fault conditions.
LM6225
Limit
(Note 5)
550
LM6325
Limit
(Note 5)
550
Units
V
IN
=
±
11V, R
L
= 1 kΩ
V
IN
=
±
11V, R
L
= 50Ω
(Note 8)
V
IN
= 2 V
PP
, R
L
= 50Ω
V+ = 5V (Note 6)
V
IN
= 100 mV
PP
R
L
= 50Ω, C
L
≤
10 pF
R
L
= 50Ω, C
L
≤
10 pF
V
O
= 100 mV
PP
R
L
= 50Ω, C
L
≤
10 pF
V
O
= 100 mV
PP
R
L
= 50Ω, C
L
≤
10 pF
V
O
= 100 mV
PP
Shutdown Pin = 0V
V
IN
= 4 V
PP
, 1 MHz
R
L
= 50Ω
Shutdown Pin = 0V
1200
800
50
50
8.0
4.0
10
30
30
30
550
V/µs
Min
MHz
Min
ns
ns
%
−50
30
700
dB
pF
ns
www.national.com
4
AC Electrical Characteristics
(Continued)
Note 5:
For operation at elevated temperature, these devices must be derated based on a thermal resistance of
θ
JA
and T
J
max, T
J
= T
A
+
θ
JA
P
D
.
θ
JC
for the
LM6125H and LM6225H is 17˚C/W. The thermal impedance
θ
JA
of the device in the N package is 40˚C/W when soldered directly to a printed circuit board, and the
heat-sinking pins (pins 3, 4, 5, 10, 11, and 12) are connected to 2 square inches of 2 oz. copper. When installed in a socket, the thermal impedance
θ
JA
of the N pack-
age is 60˚C/W.
Note 6:
Limits are guaranteed by testing or correlation.
Note 7:
The input is biased to +2.5V, and V
IN
swings V
PP
about this value. The input swing is 2 V
PP
at all temperatures except for the A
V
3 test at −55˚C where it
is reduced to 1.5 V
PP
.
Note 8:
The Error Flag is set (low) during current limit or thermal fault detection in addition to being set by the Shutdown pin. It is an open-collector output which re-
quires an external pullup resistor.
Note 9:
Slew rate is measured with a
±
11V input pulse and 50Ω source impedance at 25˚C. Since voltage gain is typically 0.9 driving a 50Ω load, the output swing
will be approximately
±
10V. Slew rate is calculated for transitions between
±
5V levels on both rising and falling edges. A high speed measurement is done to minimize
device heating. For slew rate versus junction temperature see typical performance curves. The input pulse amplitude should be reduced to
±
10V for measurements
at temperature extremes. For accurate measurements, the input slew rate should be at least 1700 V/µs.
Note 10:
The test circuit consists of the human body model of 120 pF in series with 1500Ω.
Note 11:
A military RETS specification is available on request. At the time of printing, the LM6125H/883 RETS spec complied with the Boldface limits in this column.
The LM6125H/883 may also be procured as Standard Military Drawing specification
