LM234-3 데이터 시트보기 (PDF) - Linear Technology
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LM234-3 Datasheet PDF : 12 Pages
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LM134 Series
TYPICAL APPLICATIO S
Precision 10nA Current Source
Micropower 5V Reference
15V
V+
LM134
R2
226k
R
R1
V–
2.7k
LT1004-1.2
R3
1M
R4
100MΩ
IO
15V
2–
7
LT1008
3+
4
6
BUFFERED
VOLTAGE
8
OUTPUT
200pF
LM334
LT1004-1.2
(1.235V)
VIN = 6.5V TO 15V
R
5.6k
3+ 7
LM4250
6
2–
8
4 22M
VOUT = 5V
150pF
3.01M
1%
1M
1%
TA15
IO = 10nA
ZO ≥ 1012Ω
–15V
COMPLIANCE = –14V TO 12.5V
TA14
FET Cascoding for Low Capacitance
and/or Ultrahigh Output Impedance
VIN
ISET
Q1*
V+
LM334
R
VIN
V+
LM334
R
RSET
V–
V–
RSET
Q2*
ISET
–VIN
–VIN
TA16
*SELECT Q1 OR Q2 TO ENSURE AT LEAST 1V
ACROSS THE LM134. VP (1 – ISET/IDSS) ≥ 1.2V.
SCHE ATIC DIAGRA
V+
Q7
Q8
Q4
Q5
Q6
Q3
C1 Q2
50pF
Q1
R
V–
134 SD
9
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