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LT1034-1.2/LT1034-2.5 Micropower Dual Reference
FEATURES
s s s s s
DESCRIPTIO
Guaranteed 20 ppm/C Drift Guaranteed 40 ppm/C Drift (SO-8 Package) 20A to 20mA Operation (1.2V) Dynamic Impedance: 1 7V, 100A Reference
APPLICATIO S
s s s
Portable Meters Precision Regulators Calibrators
The LT (R) 1034 is a micropower, precision 1.2V/2.5 reference combined with a 7V auxiliary reference. The 1.2V/2.5V reference is a trimmed, thin-film, band-gap, voltage reference with 1% initial tolerance and guaranteed 20ppm/C temperature drift. Operating on only 20A, the LT1034 offers guaranteed drift, low temperature cycling hysteresis and good long-term stability. The low dynamic impedance makes the LT1034 easy to use from unregulated supplies. The 7V reference is a subsurface zener device for less demanding applications. 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
15V
Temperature Drift LT1034CS8-1.2
2.5 2.0
REVERSE VOLTAGE CHANGE (mV)
50k
500k 1.2V OR 2.5V OUTPUT
1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0
7V OUTPUT
7V
1.225V OR 2.500V
LT1034 * TA01
-2.5 -50 -25
U
50 25 0 75 TEMPERATURE (C) 100 125
LT1034 * TPC02
U
U
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LT1034-1.2/LT1034-2.5
ABSOLUTE MAXIMUM RATINGS
Operating Current ................................................. 20mA Forward Current (Note 2) ..................................... 20mA Storage Temperature Range ................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C
PACKAGE/ORDER INFORMATION
BOTTOM VIEW 1.2V 7V
ORDER PART NUMBER LT1034BCH-1.2 LT1034BCH-2.5 LT1034BMH-1.2 LT1034BMH-2.5 LT1034CH-1.2 LT1034CH-2.5 LT1034MH-1.2 LT1034MH-2.5
H PACKAGE 3-LEAD TO-46 METAL CAN TJMAX = 150C, JA = 440C/ W, JC = 80C/ W
OBSOLETE PACKAGE
Consider the Z Package for Alternate Source BOTTOM VIEW 1.2V 7V
ORDER PART NUMBER LT1034BCZ-1.2 LT1034BCZ-2.5 LT1034BIZ-1.2 LT1034BIZ-2.5 LT1034CZ-1.2 LT1034CZ-2.5 LT1034IZ-1.2 LT1034IZ-2.5
Z PACKAGE 3-LEAD TO-92 PLASTIC TJMAX = 100C, JA = 160C/ W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
2
U
U
W
WW U
W
(Note 1)
Operating Temperature Commercial ............................................. 0 to 70C Industrial .......................................... - 40C to 85C Military (OBSOLETE) ................. - 55C to 125C
ORDER PART NUMBER
TOP VIEW NC 1 NC 2 NC 3 GND 4 8 7 6 5 2.5V NC 2.5V 7V
LT1034CS8-1.2 LT1034CS8-2.5 LT1034IS8-1.2 LT1034IS8-2.5 PART MARKING 3401 3402 1034I12 34I02
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 175C, JA = 150C/ W
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LT1034-1.2/LT1034-2.5
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C.
PARAMETER Reverse Breakdown Voltage Reverse Breakdown Change with Current CONDITIONS IR = 100A
q
ELECTRICAL CHARACTERISTICS
(Note 4)
q
2mA IR 20mA
q
Minimum Operating Current Temperature Coefficient Reverse Dynamic Impedance (Note 3) Low Frequency Noise Long-Term Stability
q
IR = 100A IR = 100A
LT1034B LT1034
q
q
IR = 100A, 0.1Hz F 10Hz IR = 100A
q
LT1034-1.2 MIN TYP MAX 1.210 1.225 1.240 1.205 1.225 1.245 0.5 2.0 1.0 4.0 4.0 8.0 6.0 15.0 10 20 10 20 20 40 0.25 1.0 0.50 2.0 4 20
MIN 2.46 2.43
LT1034-2.5 TYP MAX 2.5 2.54 2.5 2.57 1.0 3.0 1.5 6.0 6.0 16.0 10.0 20.0 15 30 10 20 20 40 0.5 1.5 1.0 2.5 6 20
UNITS V V mV mV mV mV A ppm/C ppm/C VP-P ppm/khrs
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. 7V Reference.
PARAMETER Reverse Breakdown Voltage Reverse Breakdown Change with Current CONDITIONS IR = 100A
q
MIN 6.80 6.75
Temperature Coefficient Long-Term Stability
100A IR 1mA 100A IR 1mA 1mA IR 20mA 1mA IR 20mA IR = 100A IR = 100A
q q q
TYP 7.0 7.0 90 100 160 200 40 20
MAX 7.3 7.4 140 190 250 350
UNITS V V mV mV mV mV ppm/C ppm/khrs
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Forward biasing either diode will affect the operation of the other diode.
Note 3: This parameter guaranteed by "reverse breakdown change with current" test. Note 4: For the LT1034-1.2: 20A IR 2mA. For the LT1034-2.5: 30A IR 2mA.
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LT1034-1.2/LT1034-2.5 TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Voltage Change 1.2V
8 TA = -55C TO 125C
REVERSE VOLTAGE CHANGE (mV)
6 1.2V 4
REVERSE VOLTAGE CHANGE(V)
2V/DIV
2
0
-2 0.01
0.1 1 10 REVERSE CURRENT (mA)
Reverse Dynamic Impedance 1.2V
100 REVERSE DYNAMIC IMPEDANCE ()
60
REVERSE DYNAMIC IMPEDANCE ()
50 40 30 20 10 0 0.01
1.2V 10
REVERSE DYNAMIC IMPEDANCE ()
TA = 25C f = 25Hz
1
0.1 0.01
0.1 1 10 REVERSE CURRENT (mA)
4
UW
LT1034 * TPC01
LT1034 * TPC04
Reverse Voltage Change 7V
0.4 TA = 25C 0.3 7V 0.2 11 10 8 6 4 2 0 -2 -4 -6 0 -8 -10 100 -0.1 0.1 1 10 100
LT1034 * TPC02
0.1Hz to 10Hz Noise 1.2V
0.1
-11 0 1 2 3 4 5 REVERSE CURRENT (mA) 67 1s/DIV 8 9 10 11 12
LT1034 * TPC03
Reverse Dynamic Impedance 2.5V
100
IZ = 100A
Reverse Dynamic Impedance 7V
TA = 25C IZ = 100A
10 1.2V
1
100
0.1
1 FREQUENCY (kHz)
10
100
LT1034 * TPC05
0.1 10 100 1k 10k FREQUENCY (Hz) 100k
LT1034 * TPC06
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LT1034-1.2/LT1034-2.5 TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Characteristics 1.2V
16 TA = -55C TO 125C VREF = 1.2V
REVERSE CURRENT (A)
REVERSE CURRENT (mA)
12
10
REVERSE CURRENT (A)
8
4
0
0
0.8 0.4 1.2 REVERSE VOLTAGE (V)
Forward Characteristics
1.2 TA = 25C
FORWARD VOLTAGE (V)
VOLTAGE (V)
VOLTAGE (V)
0.8
0.4
0 0.01
0.1
1
10
FORWARD CURRENT (mA)
LT1034 * TPC10
UW
LT1034 * TPC07
Reverse Characteristics 2.5V
100
100
Reverse Characteristics 7V
TA = -55C TO 125C VREF = 7V
80
60
1
40
0.1
20
1.6
0.01 2.490
2.495
2.500
2.505
2.510
0
0
1
2
REVERSE VOLTAGE (V)
LT1034 * TPC02
345678 REVERSE VOLTAGE (V)
9
10
LT1034 * TPC09
Response Time
8 6 82k 4 2 0 VIN VOUT 7V
1.0
Response Time
OUTPUT
1.5 OUTPUT 36k VIN 0.5 0 VOUT 1.2V
15 0
100
INPUT
5 0
INPUT
0
40 20 TIME (s)
60
80
0
200 100 TIME (s)
300
400
LT1180A * TPC11
LT1180A * TPC12
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LT1034-1.2/LT1034-2.5
PACKAGE DESCRIPTIO
0.209 - 0.219 (5.309 - 5.537) 0.178 - 0.195 (4.521 - 4.953) 0.500 (12.700) MIN *
REFERENCE PLANE
0.016 - 0.021** (0.406 - 0.533) DIA
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0- 8 TYP
0.014 - 0.019 (0.355 - 0.483) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
0.016 - 0.050 (0.406 - 1.270)
6
U
H Package 8-Lead TO-5 Metal Can (.200 Inch PCD)
(Reference LTC DWG # 05-08-1320)
0.085 - 0.105 (2.159 - 2.667) 0.050 (1.270) TYP 0.100 (2.540) TYP PIN 1 FOR 3-LEAD PACKAGE ONLY 0.025 (0.635) MAX 45 0.036 - 0.046 (0.914 - 1.168) 0.028 - 0.048 (0.711 - 1.219)
H02/03(TO-46) 1098
0.050 (1.270) TYP
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND 0.045" BELOW THE REFERENCE PLANE 0.016 - 0.024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 - 0.610)
OBSOLETE PACKAGE
S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
0.189 - 0.197* (4.801 - 5.004) 8 7 6 5
0.228 - 0.244 (5.791 - 6.197)
0.150 - 0.157** (3.810 - 3.988)
SO8 1298
1
2
3
4
0.053 - 0.069 (1.346 - 1.752)
0.004 - 0.010 (0.101 - 0.254)
0.050 (1.270) BSC
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LT1034-1.2/LT1034-2.5
PACKAGE DESCRIPTIO
0.060 0.005 (1.524 0.127) DIA
0.180 0.005 (4.572 0.127)
0.500 (12.70) MIN
0.050 (1.27) BSC
10 NOM
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
Z Package 3-Lead Plastic TO-92 (Similar to TO-226)
(Reference LTC DWG # 05-08-1410)
0.180 0.005 (4.572 0.127) 0.90 (2.286) NOM 0.050 UNCONTROLLED (1.270) LEAD DIMENSION MAX 5 NOM 0.016 0.003 (0.406 0.076) 0.015 0.002 (0.381 0.051) 0.098 +016/-0.04 (2.5 +0.4/-0.1) 2 PLCS
Z3 (TO-92) 0401
0.060 0.010 (1.524 0.254)
0.140 0.010 (3.556 0.127)
TO-92 TAPE AND REEL REFER TO TAPE AND REEL SECTION OF LTC DATA BOOK FOR ADDITIONAL INFORMATION
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LT1034-1.2/LT1034-2.5 RELATED PARTS
PART NUMBER LT1004 LT1019 LT1236 DESCRIPTION Low Cost Precision Band-Gap Precision Series or Shunt Band-Gap Precision Series or Shunt Buried Zener COMMENTS Micropower, SO-8, Industrial Temperature Options Low Dropout, Multiple Output Options Low Noise, Low Power, Multiple Output Options
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Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507
q
LT/CPI 0102 1.5K REV E * PRINTED IN USA
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 1995

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