LTZ1000/LTZ1000A
Typical perForMance characTerisTics
Zener Voltage vs Current
100
90
ZENER VOLTAGE NOISE (nV/√Hz)
ZENER VOLTAGE CHANGE (mV)
80
70
60
50
40
30
20
10
0
0
ZENER WITH KELVIN
SENSED Q1
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
ZENER CURRENT (mA)
1000 G01
Zener Voltage Noise Spectrum
500
450
Zener Noise
I
Z
= 4mA
ZENER ALONE
400
350
300
250
200
150
100
50
0
0.1
ZENER CURRENT = 4mA
1
10
FREQUENCY (Hz)
100
ZENER CURRENT = 0.5mA
ZENER VOLTAGE NOISE (2µV/D)
I
Z
= 0.5mA
0
10
20
30
40
TIME (SECONDS)
50
60
1000 G02
1000 G03
Die Temperature Rise
vs Heater Power
0.8
0.7
HEATER POWER (W)
0.6
0.5
0.4
0.3
0.2
0.1
0
25 35 45 55 65 75 85 95 105 115 125
DIE TEMPERATURE ABOVE AMBIENT (°C)
1000 G04
Die Temperature vs Time
125
LTZ1000A
DIE TEMPERATURE RISE (°C)
HEATER POWER = 0.3W
125
Die Temperature Rise vs Time
LTZ1000
LTZ1000
DIE TEMPERATURE RISE (°C)
100
100
75
HEATER POWER = 0.2W
75
HEATER POWER = 0.7W
HEATER POWER = 0.5W
50
50
LTZ1000A
25
HEATER POWER = 0.1W
25
HEATER POWER = 0.3W
0
0.1
1
10
100
TIME (SECONDS)
1000
0
0.1
1
10
100
TIME (SECONDS)
1000 G06
1000
1000 G05
pin FuncTions
Pin 1:
Heater Positive. Must have a higher positive value
than Pin 2 and Pin 4.
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 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.
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 7:
Emitter of Sensing and Compensating Transistors.
Pin 8:
Collector of Sensing Transistor.
1000afd
3
LINER [ LINEAR TECHNOLOGY ]
