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LT1009 Series 2.5V Reference
FEATURES
s s s s s
DESCRIPTIO
s
Maximum Initial Tolerance: 0.2% Guaranteed Temperature Stability Maximum 0.6 Dynamic Impedance Wide Operating Current Range Directly Interchangeable with LM136 for Improved Performance No Adjustments Needed for Minimum Temperature Coefficient
The LT(R)1009 is a precision trimmed 2.5V shunt regulator diode featuring a maximum initial tolerance of only 5mV. The low dynamic impedance and wide operating current range enhances its versatility. The 0.2% reference tolerance is achieved by on-chip trimming which not only minimizes the initial voltage tolerance but also minimizes the temperature drift. Even though no adjustments are needed with the LT1009, a third terminal allows the reference voltage to be adjusted 5% to calibrate out system errors. In many applications, the LT1009 can be used as a pin-to-pin replacement of the LM136 and the external trim network eliminated. For a lower drift 2.5V reference, see the LT1019 data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s s s s s
Reference for 5V Systems 8-Bit A/D and D/A Reference Digital Voltmeters Current Loop Measurement and Control Systems Power Supply Monitor
TYPICAL APPLICATION
2.5V Reference
2.53
5V TO 35V
2.52
REFERENCE VOLTAGE (V)
3.6k OUTPUT LT1009 10k* TRIM
2.51 2.50 2.49 2.48
*DOES NOT AFFECT TEMPERATURE COEFFICIENT. 5% TRIM RANGE
1009 TA01
2.47 -50 -25
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Output Voltage
GUARANTEED MAXIMUM TYPICAL GUARANTEED MINIMUM 50 25 75 0 TEMPERATURE (C) 100 125
1009 TA02
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U
1
LT1009 Series
ABSOLUTE MAXIMUM RATINGS
Reverse Current .................................................... 20mA Forward Current ................................................... 10mA Storage Temperature Range ................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C
PACKAGE/ORDER INFORMATION
BOTTOM VIEW
TOP VIEW NC 1 8 7 6 5 ADJ
Z PACKAGE 3-LEAD PLASTIC TO-92 BOTTOM VIEW ADJ 3
ADJ
+ -
NC 2 NC 3 4
H PACKAGE 3-LEAD TO-46 METAL CAN
TJMAX = 150C, JA = 440C/ W, JC = 80C/ W
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 150C, JA = 190C/ W
ORDER PART NUMBER LT1009MH LT1009CH
ORDER PART NUMBER LT1009S8 LT1009IS8 S8 PART MARKING 1009 1009I
AVAILABLE OPTIO S
TEMPERATURE 0C to 70C -40C to 85C -55C to 125C ACCURACY (%) 0.20 0.40 0.20 0.40 0.20 TEMPERATURE COEFFICIENT (ppm/C) 25 25 25 35 35 LT1009MH TO-46 (H) LT1009CH LT1009S8 LT1009IZ LT1009IS8 PACKAGE STYLE SO-8 (S8) TO-92 (Z) LT1009CZ
2
U
U
W
WW U
U
W
(Note 1)
Operating Temperature Range LT1009/LT1009C .................................. 0C to 70C LT1009I ........................................... - 40C to 85C LT1009M ........................................ -55C to 125C
+
2
-
1
NC
TJMAX = 100C, JA = 160C/ W
ORDER PART NUMBER LT1009CZ LT1009IZ
LT1009 Series
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25C. For MIL-STD components, please refer to LTC883C data sheet for test listing and parameters.
SYMBOL PARAMETER Reverse Breakdown VZ Voltage VZ Reverse Breakdown IR Change with Current rZ Reverse Dynamic Impedance VZ Temp VZ Time CONDITIONS TA = 25C, IR = 1mA, 400A IR 10mA
q
H, Z Pkg S Pkg
LT1009M MIN TYP MAX 2.495 2.500 2.505 2.6 3.0 0.2 0.4 15 25 20 6 10 0.6 1.0 15 25 35
IR = 1mA
q q
LT1009I LT1009/LT1009C MIN TYP MAX MIN TYP MAX 2.495 2.500 2.505 2.495 2.500 2.505 2.49 2.50 2.51 2.49 2.50 2.51 2.6 10 2.6 10 3.0 12 3.0 12 0.2 1.0 0.2 1.0 0.4 1.4 0.4 1.4 15 15 25 35 1.8 15 4 25
UNITS V V mV mV mV ppm/C ppm/C ppm/C ppm/kHr
Temperature Stability TMIN TA TMAX Average Temperature 0C TA 70C Coefficient (Notes 2, 3) - 40C TA 85C - 55C TA 125C Long-Term Stability TA = 25C 0.1C IR = 1mA
20
20
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Guaranteed by Design.
Note 3: Average temperature coefficient is defined as the total voltage change divided by the specified temperature change.
TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Characteristics
10 -1
1.2 TJ = 25C 1.0
REVERSE VOLTAGE CHANGE (mV)
0.01 0.1 1 10
1009 G02
FORWARD VOLTAGE (V)
REVERSE CURRENT (A)
10 -2
10 -3 TJ = 25C 10 -4 TJ = 125C TJ = -55C 10 -5 0.5 1.0 1.8 2.2 1.4 REVERSE VOLTAGE (V) 2.6
1009 G01
UW
Forward Characteristics
5
Reverse Voltage Change
4
0.8 0.6 0.4 0.2 0 0.001
3
2
1
0 0 4
FORWARD CURRENT (mA)
12 16 8 REVERSE CURRENT (mA)
20
1009 G03
3
LT1009 Series TYPICAL PERFORMANCE CHARACTERISTICS
Dynamic Impedance
100 IR = 1mA -55C TJ 125C 250 IR = 1mA TJ = 25C
DYNAMIC IMPEDANCE ()
VOLTAGE SWING (V)
NOISE (mV/Hz)
10
1
0.1
10
100
1k 10k FREQUENCY (Hz)
SCHE ATIC DIAGRA
20pF
Q2 Q1 Q4 Q6
Q3
4
W
UW
1009 G04
Output Noise Voltage
3.5 3.0 2.5 2.0 1.5 1.0 0.5 0
Response Time
OUTPUT
200
5k INPUT OUTPUT
150
100
10 4 INPUT 0 1 TIME (s) 20
1009 G06
100k
50
0
10 100 1k FREQUENCY (Hz)
1009 G05
10k
100k
W
+
50k Q9 Q17
24k Q8 Q7 10k 30pF Q16
24k
6.6k
500 Q10 Q11 Q15 30k 6.6k Q12 Q13 Q14 1.1k ADJ
Q5
2k
Q18
-
1009 SD
LT1009 Series
TYPICAL APPLICATIONS
Wide Supply Range, Adjustable Reference
3.6V TO 40V V+ LM334 V- R 62
LT1009
10k
1009 TA03
5V -5V
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Low Temperature Coefficient Power Regulator
VIN
IN
LT317A OUT ADJ
VOUT 1.2k 375
LT1009
2k
1009 TA04
Switchable 1.25V Bipolar Reference
5V 5k 5k LT1009 10k 1% OUT 9.76k 1% 500
1009 TA05
5k -5V
5
LT1009 Series
PACKAGE DESCRIPTION
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
0.060 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
6
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Dimensions in inches (millimeters) unless otherwise noted.
H Package 2-Lead and 3-Lead TO-46 Metal Can
(LTC DWG # 05-08-1340)
0.085 - 0.105 (2.159 - 2.667)
0.050 (1.270) TYP
0.100 (2.540) TYP PIN 1
0.050 (1.270) TYP
FOR 3-LEAD PACKAGE ONLY 45 0.025 (0.635) MAX 0.036 - 0.046 (0.914 - 1.168) 0.028 - 0.048 (0.711 - 1.219)
H02/03(TO-46) 1098
*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)
Z Package 3-Lead Plastic TO-92 (Similar to TO-226)
(LTC DWG # 05-08-1410)
0.180 0.005 (4.572 0.127)
0.060 0.010 (1.524 0.254)
0.90 (2.286) NOM
0.140 0.010 (3.556 0.127)
Z3 (TO-92) 1098
0.050 UNCONTROLLED (1.270) LEAD DIMENSION MAX
5 NOM
10 NOM
0.015 0.002 (0.381 0.051) 0.016 0.003 (0.406 0.076)
LT1009 Series
PACKAGE DESCRIPTION
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
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.
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Dimensions in inches (millimeters) unless otherwise noted.
S8 Package 8-Lead Plastic Small Outline (Narrow 0.150)
(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)
1
2
3
4
0.053 - 0.069 (1.346 - 1.752)
0.004 - 0.010 (0.101 - 0.254)
0.016 - 0.050 (0.406 - 1.270)
0.050 (1.270) BSC
SO8 1298
7
LT1009 Series
TYPICAL APPLICATION
Low Noise 2.5V Buffered Reference
1F
RELATED PARTS
PART NUMBER LT1019 LT1236 LTC(R)1798 LT1460 LT1634 LT1461 DESCRIPTION Precision Series Reference Precision Series Reference Micropower Low Dropout Series Reference Micropower Precision Series Reference Micropower Precision Shunt Voltage Reference Micropower Precision Series Reference COMMENTS Bandgap, 0.05%, 5ppm/C 5V and 10V Zener-Based 5ppm/C, SO-8 Package 0.15% Max, 6.5A Supply Current Bandgap, 130A Supply Current 10ppm/C, Available in SOT-23 Bandgap 0.05%, 10ppm/C, 10A Supply Current 0.04% Max, 3ppm/C Max, 35A Supply Current
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com
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VIN 6V
10k
1k 10k 1k
2
- +
7 6 2.5V
LT1001C 3 4
+
100k LT1009 20F
+
20F
1009 TA06
1009sfa LT/TP 0200 2K REV A * PRINTED IN USA
(c) LINEAR TECHNOLOGY CORPORATION 1985

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