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Linear Technology Electronic Components Datasheet

LT1029 Datasheet

5V Bandgap Reference

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LT1029/LT1029A
5V Bandgap Reference
FEATURES
0.2% Output Tolerance
0.6Shunt Impedance
700µA to 10mA Operating Current
Pin Compatible with LM136-5
20ppm/°C Max Drift
Output Voltage Trim does not Affect Drift
Can be Used as Positive or Negative Reference
U
APPLICATIO S
A-to-D and D-to-A Converters
Precision Regulators
Precision Current Sources
V to F and F to V Converters
TYPICAL APPLICATIO
15V
R1
10k
5V
LT1029
LT1029
R2
10k
–5V
–15V
LT1029 • TA01
DESCRIPTIO
The LT®1029 is a 5V bandgap reference intended for use
in the shunt or “Zener” mode, allowing it to be used as
either a positive or negative reference. The output is
pretrimmed to ± 0.2% accuracy with 20ppm/°C maximum
temperature drift. A trim pin allows additional output
adjustment for even more precise output voltage.
Operating current range for the LT1029 is 700µA to 10mA.
Extremely low dynamic impedance allows excellent
output regulation even with fluctuating operating current.
The LT1029 will replace an LM136-5 or LM336-5 and
simplify circuits using the “minimum temperature coeffi-
cient” trim network. The LT1029 does not require this
special network to meet its temperature drift specification;
these application network components are simply
removed. If output trimming is required for initial
accuracy, the diodes in the trim network should be
replaced with jumpers.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Output Voltage Drift
5.015
5.010
5.005
5.000
4.995
4.990
4.895
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1029 • TA02
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1


Linear Technology Electronic Components Datasheet

LT1029 Datasheet

5V Bandgap Reference

No Preview Available !

LT1029/LT1029A
ABSOLUTE AXI U RATI GS (Note 1)
Reverse Current .................................................... 15mA
Forward Current ................................................... 10mA
Operating Temperature Range
LT1029C/LT1029AC ............................... 0°C to 70°C
LT1029M/LT1029AM (OBSOLETE) ....– 55°C to 125°C
Storage Temperature ............................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
BOTTOM VIEW
+
ADJ
H PACKAGE
TO-46 METAL CAN
TJMAX = 150°C, θJA = 440°C/W, θJC = 80°C/W
ORDER PART
NUMBER
LT1029AMH
LT1029MH
LT1029ACH
LT1029CH
OBSOLETE PACKAGE
Consider the Z Package as an Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
BOTTOM VIEW
ADJ + –
Z PACKAGE
TO-92 PLASTIC
TJMAX = 100°C, θJA = 160°C/W
ORDER PART
NUMBER
LT1029ACZ
LT1029CZ
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C.
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Reverse Breakdown Voltage
IR = 1mA LT1029AM/LT1029AC
LT1029M/LT1029C
4.99 5.00 5.01
4.95 5.00 5.05
V
V
Reverse Breakdown Change with Current
700µA IR 10mA
25
mV
38
mV
Reverse Dynamic Impedance
IR = 1mA
0.2 0.6
0.3 1.0
Temperature Stability
IR = 1mA
LT1029AC
LT1029C
LT1029AM
LT1029M
37
5 12
7 18
10 36
mV
mV
mV
mV
Equivalent Temperature Drift
Long Term Stability
LT1029AM/LT1029AC
LT1029C
LT1029M
8 20
12 34
15 40
ppm/°C
ppm/°C
ppm/°C
20 ppm/kHr
Trim Range
± 3 + 5, – 13
%
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
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2


Part Number LT1029
Description 5V Bandgap Reference
Maker Linear Technology
Total Page 4 Pages
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