LTZ1000ACH-PBF LINER [Linear Technology], LTZ1000ACH-PBF Datasheet

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LTZ1000ACH-PBF

Manufacturer Part Number
LTZ1000ACH-PBF
Description
Ultra Precision Reference
Manufacturer
LINER [Linear Technology]
Datasheet
FEATURES
APPLICATIONS
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TYPICAL APPLICATION
1.2μV
2μV/√kHr Long-Term Stability
Very Low Hysteresis
0.05ppm/°C Drift
Temperature Stabilized
400°C/W Thermal Resistance for LTZ1000A Reduces
Insulation Requirements
Specifi ed for –55°C to 125°C Temperature Range
Offered in TO-99 package
Voltmeters
Calibrators
Standard Cells
Scales
Low Noise RF Oscillators
120Ω
LTZ1000
P-P
Noise
30k
Low Noise Reference
0.02μF
3
2
+
LT
V
IN
®
1006
≥ 10V
7
4
6
1N4148
OUTPUT
1000 TA01
DESCRIPTION
The LTZ1000 and LTZ1000A are ultra-stable temperature
controllable references. They are designed to provide 7V
outputs with temperature drifts of 0.05ppm/°C, about
1.2μV
Included on the chip is a subsurface zener reference, a
heater resistor for temperature stabilization, and a tem-
perature sensing transistor. External circuitry is used to
set operating currents and to temperature stabilize the
reference. This allows maximum fl exibility and best long-
term stability and noise.
The LTZ1000 and LTZ1000A references can provide su-
perior performance to older devices such as the LM199,
provided that the user implements the heater control and
properly manages the thermal layout. To simplify thermal
insulation, the LTZ1000A uses a proprietary die attach
method to provide signifi cantly higher thermal resistance
than the LTZ1000.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Ultra Precision Reference
P-P
of noise and long-term stability of 2μV/√kHr.
LONG-TERM STABILITY OF A TYPICAL DEVICE FROM TIME = 0
–2
2
0
0
WITH NO PRECONDITIONING OR AGING
Long-Term Stability
LTZ1000/LTZ1000A
10
DAYS
20
1000 TA01b
30
1000afc
1

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LTZ1000ACH-PBF Summary of contents

Page 1

FEATURES n 1.2μV Noise P-P n 2μV/√kHr Long-Term Stability n Very Low Hysteresis n 0.05ppm/°C Drift n Temperature Stabilized n 400°C/W Thermal Resistance for LTZ1000A Reduces Insulation Requirements n Specifi ed for –55°C to 125°C Temperature Range n Offered in ...

Page 2

... LTZ1000CH#PBF LTZ1000CH#TRPBF LEAD BASED FINISH TAPE AND REEL LTZ1000ACH LTZ1000ACH#TR LTZ1000CH LTZ1000CH#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: ...

Page 3

TYPICAL PERFORMANCE CHARACTERISTICS Zener Voltage vs Current 100 90 80 ZENER ALONE ZENER WITH KELVIN SENSED 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 ZENER CURRENT (mA) 1000 G01 ...

Page 4

LTZ1000/LTZ1000A BLOCK DIAGRAM *SUBSTRATE DEVICES–DO NOT FORWARD BIAS APPLICATIONS INFORMATION LTZ1000 and LTZ1000A are capable of providing ultimate voltage reference performance. Temperature drifts of better than 0.03ppm/°C and long-term stability on the order of 1μV per month can be achieved. ...

Page 5

APPLICATIONS INFORMATION Setting Control Temperature The emitter-base voltage of the control transistor sets the stabilization temperature for the LTZ1000. With the values given in the applications, temperature is normally 60°C. This provides 15°C of margin above a maximum ambient of ...

Page 6

LTZ1000/LTZ1000A TYPICAL APPLICATIONS Averaging Reference Voltage for Lower Noise and Better Stability V 15V IN 0.01% 1.6k 30Ω* OUTPUT 150Ω Adjusting Temperature Coeffi cient in Unstabilized Applications R1 70k 200Ω 120Ω * PULSE HEATER ON AND ...

Page 7

TYPICAL APPLICATIONS 2N3904 LT1013 6 – *PROVIDES TC COMPENSATION, DELETE FOR LTZ1000A APPROXIMATE CHANGE IN REFERENCE VOLTAGE FOR A 100ppm (0.01%) CHANGE IN RESISTOR VALUES: R(Ω) 0.012Ω R1 7Ω R2 7Ω ...

Page 8

LTZ1000/LTZ1000A PACKAGE DESCRIPTION SEATING PLANE .010 – .045* (0.254 – 1.143) 45° .028 – .034 (0.711 – 0.864) (2.794 – 4.064) * LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND THE SEATING PLANE ** FOR SOLDER DIP LEAD FINISH, ...

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