LM134 Series
TYPICAL APPLICATIO S
Higher Output Current
V
IN
2N2905
R1*
2N4250
V
+
R
C1*
C1
0.0022
LM334
V
–
R
SET
–V
IN
TA05
*SELECT R1 AND C1 FOR OPTIMUM STABILITY
Micropower Bias
V
IN
LM4250
1µA
V
+
LM334
V
–
TA08
R
SET
R 68k
–V
IN
Alternate Trimming Technique
V
IN
V
+
R
R
SET
LM334
R1*
V
–
TA11
–V
IN
*FOR
±10%
ADJUSTMENT, SELECT R
SET
10% HIGH AND MAKE R1
≈
3R
SET
8
U
Low Output Impedance Thermometer
V
IN
R1
15k
R2
300Ω
Low Input Voltage Reference Driver
V
IN
≥
V
REF
+ 200mV
R1
1.5k
C1
0.1
V
+
LM334
Q1
2N4250
V
OUT
= V
Z
+ 64mV AT 25°C
I
OUT
≤
3mA
LT1009
V
+
R
V
OUT
= 10mV/°K
Z
OUT
≤
2Ω
R3
100Ω
+
V
Z
R
–
LM334
V
–
V
–
R2
120Ω
R4
4.5k
TA06
TA07
1.2V Regulator with 1.8V Minimum Input
V
IN
≥
1.8V
100k
Zener Biasing
V
IN
C1
0.001
2N4250
R1
33k
V
OUT
= 1.2V
I
OUT
≤
200µA
V
+
LM334
R
R
SET
V
OUT
V
Z
TA10
1N457**
V
+
LM134**
V
–
R
R1*
≈6k
1%
R2*
680Ω
1%
TA09
V
–
*SELECT RATIO OF R1 TO R2 FOR ZERO TEMPERATURE DRIFT
**LM134 AND DIODE SHOULD BE ISOTHERMAL
Buffer for Photoconductive Cell
High Precision Low TC Current Source
+
V
LM334
+
I
SET
≥
50µA
R
V
+
LM334
1.5V
V
–
TA12
R
V
–
R1
6.8k
LT1004-1.2
(1.235V)
R2*
TA13
–
*I
SET
= 1.37V + 10µA
R2
I
SET
TC = 0.016%/°C + 33nA/°C
REGULATION
≈
0.001%/V
LINER [ LINEAR TECHNOLOGY ]
