LM134 Series
ELECTRICAL CHARACTERISTICS
CURRENT SOURCE (Note 2)
SYMBOL
∆I
SET
PARAMETER
Set Current Error, V
+
= 2.5V
(Note 3)
Ratio of Set Current to
V
–
Current
V
MIN
Minimum Operating Voltage
CONDITIONS
10µA
≤
I
SET
≤
1mA
1mA < I
SET
≤
5mA
2µA
≤
I
SET
< 10µA
10µA
≤
I
SET
≤
1mA
1mA
≤
I
SET
≤
5mA
2µA
≤
I
SET
≤
10µA
2µA
≤
I
SET
≤
100µA
100µA < I
SET
≤
1mA
1mA < I
SET
≤
5mA
1.5V
≤
V
+
≤
5V
2µA
≤
I
SET
≤
1mA
5V
≤
V
+
≤
V
MAX
(Note 5)
1.5V
≤
V
≤
5V
1mA < I
SET
≤
5mA
5V
≤
V
≤
V
MAX
(Note 5)
Temperature Dependence of
Set Current (Note 4)
C
S
Effective Shunt Capacitance
25µA
≤
I
SET
≤
1mA
0.96
15
14
18
14
18
0.8
0.9
1.0
0.02
0.01
0.03
0.02
1.04
0.96
15
0.05
0.03
MIN
LM134
TYP
MAX
3
5
8
23
23
14
18
14
18
0.8
0.9
1.0
0.02
0.01
0.03
0.02
1.04
pF
0.1
0.05
MIN
LM334
TYP
MAX
6
8
12
26
26
V
V
V
%/V
%/V
%/V
%/V
UNITS
%
%
%
∆I
SET
∆V
IN
Average Change in Set Current
with Input Voltage
TEMPERATURE SENSOR (Note 2)
SYMBOL
∆I
SET
PARAMETER
Set Current Error, V
+
= 2.5V
(Note 3)
Equivalent Temperature Error
Ratio of Set Current to
V
–
Current
V
MIN
∆I
SET
∆V
IN
Minimum Operating Voltage
Average Change in Set Current
with Input Voltage
Temperature Dependence of
Set Current (Note 4)
Equivalent Slope Error
C
S
Effective Shunt Capacitance
100µA
≤
I
SET
≤
1mA
100µA
≤
I
SET
≤
1mA
1.5V
≤
V
+
≤
5V
100µA
≤
I
SET
≤
1mA
5V
≤
V
+
≤
30V
100µA
≤
I
SET
≤
1mA
0.98
±2
15
14
18
0.9
0.02
0.01
0.05
0.03
1.02
0.97
±3
15
CONDITIONS
100µA
≤
I
SET
≤
1mA
T
j
= 25°C
LM134-3,LM234-3
MIN
TYP
MAX
±1
±3
26
14
18
0.9
0.02
0.01
0.1
0.05
1.03
%
pF
LM134-6, LM234-6
MIN
TYP
MAX
±2
±6
26
V
%/V
%/V
UNITS
%
°C
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Unless otherwise specified, tests are performed at T
j
= 25°C with
pulse testing so that junction temperature does not change during test.
Note 3:
Set current is the current flowing into the V
+
pin. It is determined
by the following formula: I
SET
= 67.7mV/R
SET
(at 25°C). Set current error
is expressed as a percent deviation from this amount. I
SET
increases at
0.336%/°C at T
j
= 25°C.
Note 4:
I
SET
is nominally directly proportional to absolute temperature
(°K). I
SET
at any temperature can be calculated from: I
SET
= I
O
(T/T
O
)
where I
O
is I
SET
measured at T
O
(°K).
Note 5:
V
MAX
= 40V for LM134 and 30V for other grades.
3
LINER [ LINEAR TECHNOLOGY ]
