LT1034-1.2/LT1034-2.5
Micropower Dual
Reference
FEATURES
DESCRIPTIO
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Guaranteed 20 ppm/ C Drift The LT 1034 is a micropower, precision 1.2V/2.5 refer-
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Guaranteed 40 ppm/ C Drift (SO-8 Package) ence combined with a 7V auxiliary reference. The 1.2V/2.5V
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20m A to 20mA Operation (1.2V) reference is a trimmed, thin-film, band-gap, voltage refer-
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Dynamic Impedance: 1W ence with 1% initial tolerance and guaranteed 20ppm/ C
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7V, 100m A Reference temperature drift. Operating on only 20m A, the LT1034
offers guaranteed drift, low temperature cycling hyster-
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esis and good long-term stability. The low dynamic im-
APPLICATIO S
pedance makes the LT1034 easy to use from unregulated
supplies. The 7V reference is a subsurface zener device for
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Portable Meters
less demanding applications.
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Precision Regulators
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Calibrators
The LT1034 reference can be used as a high performance
upgrade of the LM385 or LT1004, where guaranteed
temperature drift is desired.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Temperature Drift LT1034CS8-1.2
15V
2.5
2.0
1.5
50k 500k
1.0
1.2V OR 2.5V
0.5
7V OUTPUT
OUTPUT
0
1.225V
0.5
7V
OR 2.500V
1.0
1.5
2.0
LT1034 TA01
2.5
50 25 0 25 50 75 100 125
TEMPERATURE (C)
LT1034 TPC02
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REVERSE VOLTAGE CHANGE (mV)
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ULT1034-1.2/LT1034-2.5
(Note 1)
ABSOLUTE MAXIMUM RATINGS
Operating Current ................................................. 20mA Operating Temperature
Forward Current (Note 2) ..................................... 20mA Commercial ............................................. 0 to 70 C
Storage Temperature Range ................. 65 C to 150 C Industrial .......................................... 40 C to 85 C
Lead Temperature (Soldering, 10 sec).................. 300 C Military (OBSOLETE) .................55 C to 125 C
PACKAGE/ORDER INFORMATION
BOTTOM VIEW
ORDER PART NUMBER ORDER PART
NUMBER
1.2V
LT1034BCH-1.2
7V
LT1034CS8-1.2
LT1034BCH-2.5
TOP VIEW
LT1034CS8-2.5
LT1034BMH-1.2
NC 1 8 2.5V
LT1034IS8-1.2
LT1034BMH-2.5
H PACKAGE
NC 2 7 NC
LT1034IS8-2.5
3-LEAD TO-46 METAL CAN LT1034CH-1.2
NC 3 6 2.5V
T = 150 C, q = 440 C/ W,
JMAX JA
LT1034CH-2.5
q = 80 C/ W
JC
PART MARKING
GND 4 5 7V
LT1034MH-1.2
LT1034MH-2.5
S8 PACKAGE
3401
8-LEAD PLASTIC SO
3402
OBSOLETE PACKAGE
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Consider the Z Package for Alternate Source
T = 175 C, q = 150 C/ W
JMAX JA
34I02
ORDER PART NUMBER
BOTTOM VIEW
1.2V LT1034BCZ-1.2
7V LT1034BCZ-2.5
LT1034BIZ-1.2
LT1034BIZ-2.5
LT1034CZ-1.2
Z PACKAGE
LT1034CZ-2.5
3-LEAD TO-92 PLASTIC
LT1034IZ-1.2
T = 100 C, q = 160 C/ W
JMAX JA
LT1034IZ-2.5
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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