LTZ1000/LTZ1000A
Typical perForMance characTerisTics
Zener Voltage vs Current
Zener Voltage Noise Spectrum
Zener Noise
500
450
400
350
100
90
I
= 4mA
Z
80
ZENER ALONE
70
60
50
40
30
300
250
I
= 0.5mA
Z
ZENER CURRENT = 0.5mA
ZENER CURRENT = 4mA
200
150
100
50
20
10
0
ZENER WITH KELVIN
SENSED Q1
0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
ZENER CURRENT (mA)
0.1
1
10
100
0
20
30
40
50
60
10
FREQUENCY (Hz)
TIME (SECONDS)
1000 G01
1000 G02
1000 G03
Die Temperature Rise
vs Heater Power
Die Temperature vs Time
Die Temperature Rise vs Time
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
125
125
100
75
50
25
0
LTZ1000A
LTZ1000
100 HEATER POWER = 0.3W
75
LTZ1000
HEATER POWER = 0.7W
HEATER POWER = 0.5W
HEATER POWER = 0.2W
50
25
0
LTZ1000A
HEATER POWER = 0.1W
HEATER POWER = 0.3W
25 35 45 55 65 75 85 95 105 115 125
DIE TEMPERATURE ABOVE AMBIENT (°C)
0.1
1
10
100
1000
0.1
1
10
100
1000
TIME (SECONDS)
TIME (SECONDS)
1000 G06
1000 G05
1000 G04
pin FuncTions
Pin 1: Heater Positive. Must have a higher positive value
than Pin 2 and Pin 4.
Pin 5: Temperature Compensating Transistor Collector.
Pin 6: Temperature Sensing Transistor Base. If the base
emitter junction is zenered (about 7V) the transistor will
suffer permanent beta degradation.
Pin 2: Heater Negative. Must have a higher positive value
than Pin 4. Must have equal or lower potential than Pin 1.
Pin 3: Zener Positive. Must have a higher positive value
than Pin 4.
Pin 7: Emitter of Sensing and Compensating Transistors.
Pin 8: Collector of Sensing Transistor.
Pin 4: Substrate and Zener Negative. Must have a higher
positive value than Pin 7. If Q1 is zenered (about 7V) a
permanent degradation in beta will result.
1000afd
3
Linear [ Linear ]
