LT1034-1.2/LT1034-2.5
Micropower Dual
Reference
U
FEATURES
DESCRIPTION
The LT®1034 is a micropower, precision 1.2V/2.5 refer-
encecombinedwitha7Vauxiliaryreference.The1.2V/2.5V
reference is a trimmed, thin-film, band-gap, voltage refer-
ence with 1% initial tolerance and guaranteed 20ppm/°C
temperature drift. Operating on only 20µA, the LT1034
offers guaranteed drift, low temperature cycling hyster-
esis and good long-term stability. The low dynamic im-
pedance makes the LT1034 easy to use from unregulated
supplies. The7Vreferenceisasubsurfacezenerdevicefor
less demanding applications.
■
Guaranteed 20 ppm/
°
C Drift
(H Package and Z Package)
■
■
■
■
Guaranteed 40 ppm/
°C Drift (SO-8 Package)
20 A to 20mA Operation (1.2V)
µ
Dynamic Impedance: 1Ω
7V, 100µA Reference
U
APPLICATIONS
■
■
■
Portable Meters
Precision Regulators
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.
U U
TYPICAL APPLICATION AND BLOCK DIAGRAM
W
Temperature Drift LT1034CS8-1.2
15V
2.5
2.0
1.5
50k
500k
1.0
1.2V OR 2.5V
OUTPUT
0.5
7V OUTPUT
0
1.225V
–0.5
–1.0
–1.5
–2.0
–2.5
7V
OR 2.500V
LT1034 • TA01
–50
0
25
50
75 100 125
–25
TEMPERATURE (°C)
LT1034 • TPC02
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1004
Low Cost Precision Band-Gap
Micropower, SO-8, Industrial Temperature Options
Low Dropout, Multiple Output Options
LT1019
Precision Series or Shunt Band-Gap
Precision Series or Shunt Buried Zener
LT1236
Low Noise, Low Power, Multiple Output Options
1