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LM334M bảng dữ liệu(PDF) 3 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  LM134/LM234/LM334 3-Terminal Adjustable Current Sources
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LM134, LM234, LM334
www.ti.com
SNVS746E – MARCH 2000 – REVISED MAY 2013
Electrical Characteristics
(1)
LM134/LM234
LM334
Parameter
Conditions
Units
Min
Typ
Max
Min
Typ
Max
Set Current Error, V+=2.5V(2)
10
μA ≤ ISET ≤ 1mA
3
6
%
1mA < ISET ≤ 5mA
5
8
%
2
μA ≤ ISET < 10μA
8
12
%
Ratio of Set Current to Bias
100
μA ≤ ISET ≤ 1mA
14
18
23
14
18
26
Current
1mA
≤ ISET ≤ 5mA
14
14
2
μA≤ISET≤100 μA
18
23
18
26
Minimum Operating Voltage
2
μA ≤ ISET ≤ 100μA
0.8
0.8
V
100
μA < ISET ≤ 1mA
0.9
0.9
V
1mA < ISET ≤ 5mA
1.0
1.0
V
Average Change in Set Current 2
μA ≤ ISET ≤ 1mA
1.5
≤ V+ ≤ 5V
0.02
0.05
0.02
0.1
%/V
with Input Voltage
5V
≤ V+ ≤ 40V
0.01
0.03
0.01
0.05
%/V
1mA < ISET ≤ 5mA
1.5V
≤ V ≤ 5V
0.03
0.03
%/V
5V
≤ V ≤ 40V
0.02
0.02
%/V
Temperature Dependence of
25
μA ≤ ISET ≤ 1mA
0.96T
T
1.04T
0.96T
T
1.04T
Set Current(3)
Effective Shunt Capacitance
15
15
pF
(1)
Unless otherwise specified, tests are performed at Tj = 25°C with pulse testing so that junction temperature does not change during test
(2)
Set current is the current flowing into the V+ pin. For the Basic 2-Terminal Current Source circuit shown in Figure 13. ISET is determined
by the following formula: ISET = 67.7 mV/RSET (@ 25°C). Set current error is expressed as a percent deviation from this amount. ISET
increases at 0.336%/°C @ Tj = 25°C (227 μV/°C).
(3)
ISET is directly proportional to absolute temperature (°K). ISET at any temperature can be calculated from: ISET = Io (T/To) where Io is ISET
measured at To (°K).
Electrical Characteristics
(1)
LM234-3
LM234-6
Parameter
Conditions
Units
Min
Typ
Max
Min
Typ
Max
Set Current Error, V+=2.5V (2)
100
μA ≤ ISET ≤ 1mA
±1
±2
%
TJ = 25°
Equivalent Temperature Error
±3
±6
°C
Ratio of Set Current to Bias
100
μA ≤ ISET ≤ 1mA
14
18
26
14
18
26
Current
Minimum Operating Voltage
100
μA ISET ≤ 1mA
0.9
0.9
V
Average Change in Set Current 100
μA ≤ ISET ≤ 1mA
1.5
≤ V+ ≤ 5V
0.02
0.05
0.02
0.01
%/V
with Input Voltage
5V
≤ V+ ≤ 30V
0.01
0.03
0.01
0.05
%/V
Temperature Dependence of
100
μA ≤ ISET ≤ 1mA
0.98T
T
1.02T
0.97T
T
1.03T
Set Current(3)
Equivalent Slope Error
±2
±3
%
Effective Shunt Capacitance
15
15
pF
(1)
Unless otherwise specified, tests are performed at Tj = 25°C with pulse testing so that junction temperature does not change during test
(2)
Set current is the current flowing into the V+ pin. For the Basic 2-Terminal Current Source circuit shown in Figure 13. ISET is determined
by the following formula: ISET = 67.7 mV/RSET (@ 25°C). Set current error is expressed as a percent deviation from this amount. ISET
increases at 0.336%/°C @ Tj = 25°C (227 μV/°C).
(3)
ISET is directly proportional to absolute temperature (°K). ISET at any temperature can be calculated from: ISET = Io (T/To) where Io is ISET
measured at To (°K).
Copyright © 2000–2013, Texas Instruments Incorporated
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