SNVS746E – MARCH 2000 – REVISED MAY 2013
Electrical Characteristics
(1)
Parameter
Set Current Error, V
+
=2.5V
(2)
Conditions
10μA
≤
I
SET
≤
1mA
1mA < I
SET
≤
5mA
2μA
≤
I
SET
< 10μA
Ratio of Set Current to Bias
Current
100μA
≤
I
SET
≤
1mA
1mA
≤
I
SET
≤
5mA
2
μA≤I
SET
≤100 μA
Minimum Operating Voltage
2μA
≤
I
SET
≤
100μA
100μA < I
SET
≤
1mA
1mA < I
SET
≤
5mA
Average Change in Set Current 2μA
≤
I
SET
≤
1mA
with Input Voltage
1mA < I
SET
≤
5mA
Temperature Dependence of
Set Current
(3)
Effective Shunt Capacitance
(1)
(2)
(3)
25μA
≤
I
SET
≤
1mA
1.5
≤
V
≤
5V
5V
≤
V
+
≤
40V
1.5V
≤
V
≤
5V
5V
≤
V
≤
40V
0.96T
+
LM134/LM234
Min
Typ
Max
3
5
8
14
18
14
18
0.8
0.9
1.0
0.02
0.01
0.03
0.02
T
15
1.04T
0.96T
0.05
0.03
23
23
14
Min
LM334
Typ
Max
6
8
12
18
14
18
0.8
0.9
1.0
0.02
0.01
0.03
0.02
T
15
1.04T
0.1
0.05
26
26
Units
%
%
%
V
V
V
%/V
%/V
%/V
%/V
pF
Unless otherwise specified, tests are performed at T
j
= 25°C with pulse testing so that junction temperature does not change during test
Set current is the current flowing into the V
+
pin. For the Basic 2-Terminal Current Source circuit shown in
I
SET
is determined
by the following formula: I
SET
= 67.7 mV/R
SET
(@ 25°C). Set current error is expressed as a percent deviation from this amount. I
SET
increases at 0.336%/°C @ T
j
= 25°C (227
μV/°C).
I
SET
is 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).
Electrical Characteristics
(1)
Parameter
Set Current Error, V
+
=2.5V
(2)
Conditions
100μA
≤
I
SET
≤
1mA
T
J
= 25°
LM234-3
Min
Typ
Max
±1
±3
Min
LM234-6
Typ
Max
±2
±6
14
18
0.9
0.05
0.03
1.02T
±2
0.97T
0.02
0.01
T
0.01
0.05
1.03T
±3
15
26
Units
%
°C
Equivalent Temperature Error
Ratio of Set Current to Bias
Current
Minimum Operating Voltage
100μA
≤
I
SET
≤
1mA
100μA I
SET
≤
1mA
1.5
≤
V
≤
5V
5V
≤
V
≤
30V
0.98T
+
+
14
18
0.9
0.02
0.01
T
26
V
%/V
%/V
Average Change in Set Current 100μA
≤
I
SET
≤
1mA
with Input Voltage
Temperature Dependence of
Set Current
(3)
Equivalent Slope Error
Effective Shunt Capacitance
(1)
(2)
(3)
100μA
≤
I
SET
≤
1mA
%
pF
15
Unless otherwise specified, tests are performed at T
j
= 25°C with pulse testing so that junction temperature does not change during test
Set current is the current flowing into the V
+
pin. For the Basic 2-Terminal Current Source circuit shown in
I
SET
is determined
by the following formula: I
SET
= 67.7 mV/R
SET
(@ 25°C). Set current error is expressed as a percent deviation from this amount. I
SET
increases at 0.336%/°C @ T
j
= 25°C (227
μV/°C).
I
SET
is 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).
Copyright © 2000–2013, Texas Instruments Incorporated
3
Product Folder Links:
TI [ TEXAS INSTRUMENTS ]
