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LM134 Datasheet(PDF) 9 Page - Linear Technology

Part # LM134
Description  Constant Current Source and Temperature Sensor
PDF  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LM134 Datasheet(HTML) 9 Page - Linear Technology

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LM134 Series
9
TYPICAL APPLICATIO S
Precision 10nA Current Source
Micropower 5V Reference
FET Cascoding for Low Capacitance
and/or Ultrahigh Output Impedance
SCHE ATIC DIAGRA
Q7
Q8
Q5
Q4
Q6
Q1
Q2
Q3
V+
V–
R
C1
50pF
134 SD
–
+
IO
V+
V–
R
R1
2.7k
R2
226k
R3
1M
R4
100M
Ω
LM134
2
3
4
7
6
8
LT1004-1.2
15V
–15V
15V
LT1008
BUFFERED
VOLTAGE
OUTPUT
200pF
IO = 10nA
ZO ≥ 10
12Ω
COMPLIANCE = –14V TO 12.5V
TA14
R
LM334
TA15
–
+
2
3
4
7
6
8
LM4250
22M
LT1004-1.2
(1.235V)
5.6k
1M
1%
3.01M
1%
150pF
VIN = 6.5V TO 15V
VOUT = 5V
V–
V+
R
LM334
RSET
ISET
ISET
VIN
–VIN
Q1*
V–
V+
R
LM334
RSET
TA16
VIN
–VIN
Q2*
*SELECT Q1 OR Q2 TO ENSURE AT LEAST 1V
ACROSS THE LM134. VP (1 – ISET/IDSS) ≥ 1.2V.



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