LT1004
Micropower Voltage
Reference
Features
Description
Guaranteed ± 4mV Initial Accuracy LT1004-1.2
nn Guaranteed ±20mV Accuracy LT1004-2.5
nn Guaranteed 10µA Operating Current
nn Guaranteed Temperature Performance
nn Operates up to 20mA
nn Very Low Dynamic Impedance
The LT®1004 micropower voltage reference is a
2-terminal bandgap reference diode designed to provide
high accuracy and excellent temperature characteristics
at very low operating currents. Optimization of the key
parameters in the design, processing and testing of
the device results in accuracy specifications previously
attainable only with selected units. Below is a distribution
plot of reference voltage for a typical lot of LT1004-1.2.
Virtually all of the units fall well within the prescribed
limits of ±4mV.
nn
Applications
Portable Meter References
Portable Test Instruments
nn Battery-Operated Systems
nn Current Loop Instrumentation
nn
The LT1004 is a pin-for-pin replacement for the
LM185/LM385 series of references with improved accuracy specifications. More important, the LT1004 is an
attractive device for use in systems where accuracy was
previously obtained at the expense of power consumption and trimming.
nn
For a low drift micropower reference with guaranteed temperature coefficient, see the LT1034 data sheet.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog
Devices, Inc. All other trademarks are the property of their respective owners.
Typical Application
Typical Distribution of
Reference Voltage (LT1004-1.2)
Micropower Cold Junction Compensation for Thermocouples
200
160
1684Ω
5k AT 25°C†
+
LT1004-1.2
186Ω
100
80
60
40
COMPENSATES WITHIN
±1°C FROM 0°C TO 60°C
1.2375
1.237
1.2365
1.236
1.2355
1.235
* QUIESCENT CURRENT ≅ 15A
† YELLOW SPRINGS INST. CO.
PART #44007
20
1.2345
–
1.234
R1
233k
299k
300k
2.1M
120
1.2335
THERMOCOUPLE
TYPE
J
K
T
S
+
–
1.8k
140
1.233
3V
LITHIUM
NUMBER OF PARTS
R1
1.2325
100k
1200 PARTS
TA = 25°C
180
*
1004 TA02
1004 TA01
1004fc
For more information www.linear.com/LT1004
1
LT1004
Absolute Maximum Ratings
(Note 1)
Reverse Breakdown Current ...................................30mA
Forward Current .................................................... 10mA
Storage Temperature Range.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
Operating Temperature Range
LT1004M ........................................... –55°C to 125°C
LT1004I ............................................... –40°C to 85°C
LT1004C ................................................. 0°C to 70°C
Pin Configuration
TOP VIEW
BOTTOM VIEW
1
2
NC 1
8 VOUT
NC 2
7 NC
NC 3
6 VOUT
NC
5
(DO NOT USE)
GND 4
H PACKAGE
2-LEAD TO-46 METAL CAN
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 440°C/W, θJC = 80°C/W
Order Information
TJMAX = 150°C, θJA = 120°C/W
BOTTOM VIEW
Z PACKAGE
3-LEAD PLASTIC TO-92
TJMAX = 150°C, θJA = 160°C/W
http://www.linear.com/product/LT1004#orderinfo
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT1004MH-2.5#PBF
LT1004MH-2.5#TRPBF
LT1004CS8-1.2#PBF
LT1004CS8-1.2#TRPBF
0412
2-Lead TO-46 Metal Can
–55°C to 125°C
8-Lead Plastic S0
0°C to 70°C
LT1004CS8-2.5#PBF
LT1004CS8-2.5#TRPBF
0425
8-Lead Plastic S0
0°C to 70°C
LT1004IS8-1.2#PBF
LT1004IS8-1.2#TRPBF
0412I
8-Lead Plastic S0
–40°C to 85°C
LT1004IS8-2.5#PBF
LT1004IS8-2.5#TRPBF
0425I
8-Lead Plastic S0
–40°C to 85°C
LT1004CZ-1.2#PBF
LT1004CZ-1.2#TRPBF
3-Lead Plastic TO-92
0°C to 70°C
LT1004CZ-2.5#PBF
LT1004CZ-2.5#TRPBF
3-Lead Plastic TO-92
0°C to 70°C
LT1004IZ-1.2#PBF
LT1004IZ-1.2#TRPBF
3-Lead Plastic TO-92
–40°C to 85°C
LT1004IZ-2.5#PBF
LT1004IZ-2.5#TRPBF
3-Lead Plastic TO-92
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
2
1004fc
For more information www.linear.com/LT1004
LT1004
Electrical Characteristics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
C, I SUFFIXES
SYMBOL PARAMETER
CONDITIONS
VZ
Reverse Breakdown Voltage
IR = 100µA
LT1004M: – 55°C ≤ TA ≤ 125°C
LT1004C: 0°C ≤ TA ≤ 70°C
LT1004I: –40°C ≤ TA ≤ 85°C
∆VZ
∆Temp
Average Temperature Coefficient
IMIN ≤ IR ≤ 20mA (Note 3)
IMIN
Minimum Operating Current
∆VZ
∆IR
Reverse Breakdown Voltage
Change with Current
MIN
1.231 1.235
1.230
1.235
1.230
● 1.220
● 1.225
● 1.220
1mA ≤ IR ≤ 20mA
IR = 100µA
8
H SUFFIX
MAX
MIN
TYP
MAX
UNITS
1.239
1.245
1.245
1.245
2.480
2.460
2.470
2.460
2.500
2.500
2.500
2.500
2.520
2.535
2.530
2.530
V
V
V
V
20
20
20
µA
●
1.0
1.5
mV
mV
●
10
20
10
20
mV
mV
0.6
1.5
Ω
Ω
Reverse Dynamic Impedance
en
∆VZ
∆Time
Wide Band Noise (RMS)
IR = 100µA, 10Hz ≤ f ≤ 10kHz
60
120
µV
Long Term Stability
IR = 100µA, TA = 25°C ± 0.1°C
20
20
ppm/kHr
●
0.6
1.5
12
rZ
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
0.2
10
ppm/°C
1.0
1.5
●
IMIN ≤ IR ≤ 1mA
TYP
0.2
Note 2: All specifications are for TA = 25°C unless otherwise noted.
Note 3: Selected devices with guaranteed maximum temperature
coefficient are available upon request.
For MIL-STD components, please refer to LTC883C data sheet for test
listing and parameters.
1004fc
For more information www.linear.com/LT1004
3
LT1004
Typical Performance Characteristics
Reverse Characteristics
Reverse Voltage Change
10
1
0.1
0
0.2
0.4 0.6 0.8
1.0
REVERSE VOLTAGE (V)
1.2
12
8
4
Temperature Drift
DYNAMIC IMPEDANCE (Ω)
DYNAMIC IMPEDANCE (Ω)
REVERSE VOLTAGE (V)
10k
–55°C TO 125°C
f = 25Hz
10
1
0.1
0.01
NOISE (nV/Hz)
NOISE (nV/Hz)
40
100
10
100k
1004 G07
100
10k
1k
FREQUENCY (Hz)
100k
1M
1004 G06
Reponse Time
100µA
R
1.5
C
30
20
1k
10k
FREQUENCY (Hz)
10
RC LOW PASS
60
200
4
1
IR = 100µA
50
100
10
100
VOLTAGE (V)
IR = 100µA
TA = 25°C
10
100
Filtered Output Noise
70
500
0
TA = 25°C
IR = 100µA
1004 G05
Noise Voltage
300
Reverse Dynamic Impedance
1k
0.1
0.1
1
10
REVERSE CURRENT (mA)
1004 G04
400
100
1004 G11
Reverse Dynamic Impedance
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
600
0.1
1
10
FORWARD CURRENT (mA)
100
1
10
0.1
REVERSE CURRENT (mA)
1.225
700
0.4
0
0.01
100
1.230
0.8
1004 G02
1.245
1.235
TA = 25°C
0
1004 G01
1.240
Forward Characteristics
–55°C TO 125°C
–4
0.01
1.4
1.2
FORWARD VOLTAGE (V)
16
–55°C TO 125°C
OUTPUT VOLTAGE CHANGE (mV)
REVERSE CURRENT (µA)
100
0
100
OUTPUT
1.0
36k
0.5
VIN
0
5V
1k
10k
FREQUENCY (Hz)
100k
1004 G08
VOUT
0
INPUT
0
100
TIME (µs)
500
600
1004 G09
1004fc
For more information www.linear.com/LT1004
LT1004
Performance Characteristics
Reverse Characteristics
1.2
10
1
0.1
Forward Characteristics
–55°C TO 125°C
FORWARD VOLTAGE (V)
REVERSE CURRENT (µA)
100
0
0.5
1.0
1.5
2.0
REVERSE VOLTAGE (V)
2.5
TA = 25°C
0.8
0.4
0
0.01
3.0
0.1
1
10
FORWARD CURRENT (mA)
100
1004 G11
1004 G10
Temperature Drift
1000
Reverse Dynamic Impedance
2.510
2.505
2.500
2.495
2.490
DYNAMIC IMPEDANCE (Ω)
DYNAMIC IMPEDANCE (Ω)
REFERENCE VOLTAGE (V)
2.515
100
10
1
2.485
Reverse Dynamic Impedance
10k
f = 25Hz
–55°C TO 125°C
TA = 25°C
IR = 100µA
1k
100
10
1
2.480
0.1
0.01
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1
10
0.1
REVERSE CURRENT (mA)
0.1
100
10
100
10k
1k
FREQUENCY (Hz)
100k
1004 G13
1M
1004 G14
1004 G12
Noise Voltage
IR = 100µA
1200
INTEGRATED NOISE (µV)
NOISE (nV/Hz)
IR = 100µA
100
1000
800
600
400
80
60
100µA
R
3
RC LOW PASS
C
40
20
200
0
Reponse Time
Filtered Output Noise
120
VOLTAGE (V)
1400
10
100
1k
10k
FREQUENCY (Hz)
100k
1004 G15
0
100
2
1
100k
1004 G16
VIN
24k
VOUT
0
5V
1k
10k
CUTOFF FREQUENCY (Hz)
OUTPUT
0
INPUT
100
TIME (µs)
500
1004 G17
1004fc
For more information www.linear.com/LT1004
5
LT1004
Typical Applications
Variable Output Supply
High Stability 5V Regulator
LT338A
LT338A
VIN ≥ 8V
1µF
IN
5V
OUT
ADJ
+
300Ω
1%
LT1004-2.5
VIN
VIN
+
1µF
VOUT
VOUT
ADJ
120Ω
+
10µF
LT1004-1.2
100Ω
1%
1004 TA08
2k
R1
1004 TA03
V – – 1V
R1 ≤
0.015
Constant Gain Amplifier
Over Temperature
V–
Micropower 5V Reference
V + ≥ 5V
250k
250k
VIN
9V to 15V
LM334
R
OUTPUT
5.6k
3
200k
LT1004-1.2
6
LM4250
2
2N3904
7
+
INPUT
8
–
4
LT1004-1.2
Ground Referenced Current Source
15V
BATTERY
OUTPUT
133k
1%
2k*
12V
3
2
+
7
6
LM4250
–
LT1004-1.2
LT1004-1.2
LO = BATTERY LOW
R
8
4
2
10M
1004 TA14
3
†
R1 SETS TRIP POINT, 60.4k
PER CELL FOR 1.8V/CELL
7
–
LT1007C
+
4
IOUT
6
3.01M
1%
1004 TA13
1004 TA07
Lead Acid Low-Battery Detector
1M
150pF
22M
1M
1%
60k
V – ≤ –5V
R1†
1%
VOUT
5V
–5V
6
1004 TA04
1.235
IOUT =
R
2V
R≈
IOUT + 10µA
*MAY BE INCREASED
FOR SMALL OUTPUT CURRENTS
1004fc
For more information www.linear.com/LT1004
LT1004
Typical Applications
VPP Generator for Eproms –– No Trim Required
1.2V Reference from 1.5V Battery
100pF
1.5V*
24V
24V
600µs RC
PER INTEL
SPEC
1
22k
3
12k
2
0.05µF
LT1004-1.2
10k
+
7
LM301A
–
3k
6
1.235V
21V
OUT
LT1004-1.2
4
16.9k*
–5V
2N3904
TTL INPUT
8
*OUTPUT REGULATES
DOWN TO 1.285V
FOR IOUT = 0
1.05k*
56k
*1% METAL FILM RESISTORS
–5V
Micropower Reference
from 9V Battery
1004 TA15
2.5V Reference
9V
1004 TA12
Low Noise Reference
VIN ≥ 5V
5V
510k
100µA
50k
1.235V
22Ω
2.500V
LT1004-1.2
LT1004-1.2
LT1004-2.5
1004 TA11
+
OUTPUT
50µF
1004 TA10
1004 TA09
Schematic Diagrams
LT1004-1.2
LT1004-2.5
+
7.5k
+
7.5k
Q13
Q3
200k
Q3
20pF
20pF
200k
20pF
Q11
Q1
20pF
Q11
Q1
50k
600k
Q12
Q4
Q12
Q4
Q13
50k
600k
Q10
Q10
300k
300k
Q5
Q9 Q14
Q8
Q6
500k
Q5
500Ω
Q8
Q6
60k
500k
–
1004-1.2 SD
500k
Q9 Q14
500Ω
500k
60k
–
1004-2.5 SD
1004fc
For more information www.linear.com/LT1004
7
LT1004
Package Description
Please refer to http://www.linear.com/product/LT1004#packaging for the most recent package drawings.
H Package
2-Lead and 3-Lead TO-46 Metal Can
(Reference LTC DWG # 05-08-1340)
.209 – .219
(5.309 – 5.537)
.178 – .195
(4.521 – 4.953)
REFERENCE
PLANE
.085 – .105
(2.159 – 2.667)
.500
(12.700)
MIN
.025
(0.635)
MAX
SEATING*
PLANE
.016 – .019**
(0.406 – 0.483)
DIA
.050
(1.270)
TYP
.100
(2.540)
TYP
.050
(1.270)
TYP
PIN 1
FOR 3-LEAD PACKAGE ONLY
.036 – .046
(0.914 – 1.168)
45°
.028 – .048
(0.711 – 1.219)
H02/03(TO-46) 0801
*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE
AND .050" BELOW THE REFERENCE PLANE
.016 – .024
**FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS
(0.406 – 0.610)
8
1004fc
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LT1004
Package Description
Please refer to http://www.linear.com/product/LT1004#packaging for the most recent package drawings.
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610 Rev G)
.189 – .197
(4.801 – 5.004)
NOTE 3
.045 ±.005
.050 BSC
8
.245
MIN
.160 ±.005
.010 – .020
× 45°
(0.254 – 0.508)
2
.053 – .069
(1.346 – 1.752)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
5
.150 – .157
(3.810 – 3.988)
NOTE 3
1
RECOMMENDED SOLDER PAD LAYOUT
.008 – .010
(0.203 – 0.254)
6
.228 – .244
(5.791 – 6.197)
.030 ±.005
TYP
NOTE:
1. DIMENSIONS IN
7
.014 – .019
(0.355 – 0.483)
TYP
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
4. PIN 1 CAN BE BEVEL EDGE OR A DIMPLE
3
4
.004 – .010
(0.101 – 0.254)
.050
(1.270)
BSC
SO8 REV G 0212
1004fc
For more information www.linear.com/LT1004
9
LT1004
Package Description
Please refer to http://www.linear.com/product/LT1004#packaging for the most recent package drawings.
Z Package
3-Lead Plastic TO-92 (Similar to TO-226)
(Reference LTC DWG # 05-08-1410 Rev C)
.180 ± .005
(4.572 ± 0.127)
.060 ± .005
(1.524± 0.127)
DIA
.90
(2.286)
NOM
.180 ± .005
(4.572 ± 0.127)
.500
(12.70)
MIN
.050 UNCONTROLLED
(1.270) LEAD DIMENSION
MAX
.016 ± .003
(0.406 ± 0.076)
.050
(1.27)
BSC
5°
NOM
.015 ± .002
(0.381 ± 0.051)
Z3 (TO-92) 1008 REV C
.098 +.016/–.04
(2.5 +0.4/–0.1)
2 PLCS
BULK PACK
TO-92 TAPE AND REEL
REFER TO TAPE AND REEL SECTION OF
LTC DATA BOOK FOR ADDITIONAL INFORMATION
.060 ± .010
(1.524 ± 0.254)
3
2
1
.140 ± .010
(3.556 ± 0.127)
10° NOM
10
1004fc
For more information www.linear.com/LT1004
LT1004
Revision History
(Revision history begins at Rev C)
REV
DATE
DESCRIPTION
C
07/17
Added Web Links
PAGE NUMBER
All
Package Order Information Updated: TJMAX changed to 150°C for S8 and TO-92 package. Thermal resistance
(Junction to Ambient) changed to 120°C/W
2
1004fc
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.
For more
information
www.linear.com/LT1004
11
LT1004
Typical Application
0°C to 100°C Linear Output Thermometer
NETWORK DETAIL
YSI 44201
BRN
GRN
6250Ω
RT NETWORK
YSI 44201
15V
2.7k
5%
LT1004-1.2
RED
10k
0.1%
4
3
3.2k
–
1/2
LT1002
2765Ω
0.1%
13
10
+
11
10k
0.1%
+
–
1/2
LT1002
10k
0.1%
6
VOUT
0V TO10V
0°C TO 100°C
1004 TA05
168.3Ω
0.1%
Low Temperature Coefficient
2-Terminal Current Source
LM334
R
6.8k
R ≤ 5k
LT1004-1.2
IOUT ≈
1.3V
R
1004 TA06
Related Parts
PART NUMBER
DESCRIPTION
COMMENTS
LT1634
Micropower Precision Shunt Reference
10µA Operating Current, 10ppm/°C Maximum Drift, 0.05% Initial Accuracy
LT1460S3-2.5
Micropower Series Reference in SOT-23 100µA Operating Current, 20ppm/°C Maximum Drift, 0.2% Initial Accuracy
LT1790
Precision Micropower LDO Reference
in SOT-23
12
10ppm/°C Max Drift, 0.05% Initial Accuracy
1004fc
LT 0717 REV C • PRINTED IN USA
www.linear.com/LT1004
LINEAR TECHNOLOGY CORPORATION 1985
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