LINER LT1004-1.2

LT1004
Micropower Voltage
Reference
U
DESCRIPTION
FEATURES
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Guaranteed ±4mV Initial Accuracy LT1004-1.2
Guaranteed ±20mV Accuracy LT1004-2.5
Guaranteed 10µA Operating Current
Guaranteed Temperature Performance
Operates up to 20mA
Very Low Dynamic Impedance
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APPLICATIONS
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Portable Meter References
Portable Test Instruments
Battery-Operated Systems
Current Loop Instrumentation
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.
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.
For a low drift micropower reference with guaranteed
temperature coefficient, see the LT1034 data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
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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
120
100
80
60
40
1.2375
1.237
1.2365
1.236
1.2355
1.235
COMPENSATES WITHIN
±1°C FROM 0°C TO 60°C
20
1.2345
* QUIESCENT CURRENT ≅ 15µA
† YELLOW SPRINGS INST. CO.
PART #44007
1.234
–
1.2335
R 1
233k
299k
300k
2.1M
140
1.233
+
–
1.8k
NUMBER OF PARTS
R1
3V
LITHIUM
THERMOCOUPLE
TYPE
J
K
T
S
1200 PARTS
TA = 25°C
180
1.2325
100k
*
1004 TA02
1004 TA01
1
LT1004
W
U
U
PACKAGE/ORDER INFORMATION
W W
W
(Note 1)
Reverse Breakdown Current ................................. 30mA
Forward Current................................................... 10mA
Operating Temperature Range
LT1004M ......................................... – 55°C to 125°C
LT1004I ............................................. – 40°C to 85°C
LT1004C ................................................. 0°C to 70°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................ 300°C
ORDER PART
NUMBER
BOTTOM VIEW
1
2
TJMAX = 150°C
θJA = 440°C/ W
θJC = 80°C/ W
H PACKAGE
2-LEAD TO-46 METAL CAN
3
2
1
Z PACKAGE
3-LEAD PLASTIC TO-92
TOP VIEW
NC 1
8 VOUT
NC 2
7 NC
NC 3
6 VOUT
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 100°C, θJA = 150°C/ W
∆VZ
∆Temp
Average Temperature Coefficient
IMIN
Minimum Operating Current
∆VZ
∆IR
Reverse Breakdown Voltage
Change with Current
Reverse Dynamic Impedance
CONDITIONS
IR = 100µA
LT1004M: – 55°C ≤ TA ≤ 125°C
LT1004C: 0°C ≤ TA ≤ 70°C
LT1004I: – 40°C ≤ TA ≤ 85°C
●
●
●
IMIN ≤ IR ≤ 20mA (Note 3)
LT1004-1.2
MIN
TYP
MAX
1.231 1.235 1.239
1.220 1.230 1.245
1.225 1.235 1.245
1.220 1.230 1.245
50
●
8
IMIN ≤ IR ≤ 1mA
∆VZ
∆Time
Wide Band Noise (RMS)
Long Term Stability
LT1004-2.5
TYP
MAX
2.500 2.520
2.500 2.535
2.500 2.530
2.500 2.530
50
10
12
UNITS
V
V
V
V
ppm/°C
20
µA
1.0
1.5
1.0
1.5
mV
mV
●
10
20
10
20
mV
mV
0.6
1.5
Ω
Ω
IR = 100µA
0.2
0.6
1.5
0.2
IR = 100µA
10Hz ≤ f ≤ 10kHz
60
120
IR = 100µA
TA = 25°C ± 0.1°C
20
20
The ● denotes the specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All specifications are for TA = 25°C unless otherwise noted.
2
MIN
2.480
2.460
2.470
2.460
●
●
en
S8 PART MARKING
0412
0425
0412I
0425I
(Note 2)
1mA ≤ IR ≤ 20mA
rZ
LT1004CZ-1.2
LT1004CZ-2.5
LT1004IZ-1.2
LT1004IZ-2.5
LT1004CS8-1.2
LT1004CS8-2.5
LT1004IS8-1.2
LT1004IS8-2.5
5 NC (DO NOT USE)
GND 4
SYMBOL PARAMETER
VZ
Reverse Breakdown Voltage
LT1004MH-1.2
LT1004MH-2.5
LT1004CH-1.2
LT1004CH-2.5
BOTTOM VIEW
TJMAX = 100°C
θJA = 160°C/ W
ELECTRICAL CHARACTERISTICS
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ABSOLUTE MAXIMUM RATINGS
µV
ppm/kHr
Note 3: Selected devices with guaranteed maximum temperature
coefficient are available upon request.
For MIL-STD components, please refer to LTC 883C data sheet for test
listing and parameters.
LT1004
U W
TYPICAL PERFORMANCE CHARACTERISTICS (1.2V)
Reverse Characteristics
1.2
16
–55°C TO 125°C
1
0.1
0.2
0.4 0.6 0.8
1.0
REVERSE VOLTAGE (V)
1.2
12
FORWARD VOLTAGE (V)
10
0
TA = 25°C
–55°C TO 125°C
OUTPUT VOLTAGE CHANGE (mV)
REVERSE CURRENT (µA)
Forward Characteristics
Reverse Voltage Change
100
8
4
0.4
0
–4
0.01
1.4
0.8
1
10
0.1
REVERSE CURRENT (mA)
0
0.01
100
Temperature Drift
Reverse Dynamic Impedance
Reverse Dynamic Impedance
100
1.245
10k
–55°C TO 125°C
f = 25Hz
1.230
TA = 25°C
IR = 100µA
DYNAMIC IMPEDANCE (Ω)
DYNAMIC IMPEDANCE (Ω)
REVERSE VOLTAGE (V)
1.235
100
1004 G11
1004 G02
1004 G01
1.240
0.1
1
10
FORWARD CURRENT (mA)
10
1
1k
100
10
1
1.225
0.1
0.01
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
0.1
1
10
REVERSE CURRENT (mA)
0.1
100
10
100
10k
1k
FREQUENCY (Hz)
1004 G05
Reponse Time
Filtered Output Noise
70
IR = 100µA
IR = 100µA
TA = 25°C
600
RC LOW PASS
60
50
NOISE (nV/√Hz)
500
400
300
40
100µA
R
1.5
VOLTAGE (V)
700
NOISE (nV/√Hz)
1M
1004 G06
1004 G04
Noise Voltage
100k
C
30
200
20
100
10
OUTPUT
1.0
36k
0.5
VOUT
VIN
0
5V
INPUT
0
10
100
1k
10k
FREQUENCY (Hz)
100k
1004 G07
0
100
0
1k
10k
FREQUENCY (Hz)
100k
1004 G08
0
100
TIME (µs)
500
600
1004 G09
3
LT1004
U W
TYPICAL PERFORMANCE CHARACTERISTICS (2.5V)
Reverse Characteristics
Forward Characteristics
1.2
100
TA = 25°C
FORWARD VOLTAGE (V)
REVERSE CURRENT (µA)
–55°C TO 125°C
10
1
0.1
0
0.5
1.0
1.5
2.0
REVERSE VOLTAGE (V)
2.5
0.8
0.4
0
0.01
3.0
0.1
1
10
FORWARD CURRENT (mA)
1004 G11
1004 G10
Temperature Drift
Reverse Dynamic Impedance
Reverse Dynamic Impedance
10k
1000
f = 25Hz
–55°C TO 125°C
2.505
2.500
2.495
2.490
2.485
TA = 25°C
IR = 100µA
DYNAMIC IMPEDANCE (Ω)
DYNAMIC IMPEDANCE (Ω)
REFERENCE VOLTAGE (V)
2.515
2.510
100
100
10
1
1k
100
10
1
2.480
0.1
0.01
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
0.1
1
10
0.1
REVERSE CURRENT (mA)
100
10k
1k
FREQUENCY (Hz)
100k
1004 G13
1004 G12
Noise Voltage
1M
1004 G14
Reponse Time
Filtered Output Noise
120
1400
IR = 100µA
IR = 100µA
1200
800
600
400
80
100µA
R
3
RC LOW PASS
VOLTAGE (V)
INTEGRATED NOISE (µV)
100
1000
NOISE (nV/√Hz)
10
100
C
60
40
20
200
OUTPUT
2
1
VIN
24k
VOUT
0
5V
INPUT
0
10
100
1k
10k
FREQUENCY (Hz)
100k
1004 G15
4
0
100
0
1k
10k
CUTOFF FREQUENCY (Hz)
100k
1004 G16
100
TIME (µs)
500
1004 G17
LT1004
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TYPICAL APPLICATIONS
Variable Output Supply
High Stability 5V Regulator
LT338A
LT1338A
VIN ≥ 8V
IN
VIN
5V
OUT
VIN
+
300Ω
1%
1µF
VOUT
VOUT
ADJ
+
ADJ
120Ω
1µF
+
10µF
LT1004-2.5
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
INPUT
6
LM4250
2
2N3904
200k
7
+
LT1004-1.2
–
4
LT1004-1.2
VOUT
5V
8
150pF
22M
3.01M
1%
1M
1%
60k
V – ≤ –5V
1004 TA13
1004 TA07
Lead Acid Low Battery Detector
Ground Referenced Current Source
15V
BATTERY
OUTPUT
R1†
1%
1M
3
+
LT1004-1.2
7
6
LM4250
133k
1%
2k*
12V
2
LT
1004-1.2
–
LO = BATTERY LOW
R
2
8
4
10M
7
–
LT1007C
3
1004 TA14
+
PER CELL FOR 1.8V/CELL
IOUT
1004 TA04
1.235
R
2V
R≈
IOUT + 10µA
IOUT =
4
† R1 SETS TRIP POINT, 60.4k
6
–5V
* MAY BE INCREASED
FOR SMALL OUTPUT CURRENTS
5
LT1004
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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
8
+
7
LM301A
2
0.05µF
LT1004-1.2
–
3k
1.235V
21V
OUT
6
LT1004-1.2
4
16.9k*
10k
–5V
*OUTPUT REGULATES
DOWN TO 1.285V
FOR I OUT = 0
2N3904
TTL INPUT
1.05k*
56k
* 1% METAL FILM RESISTORS
–5V
Micropower Reference
from 9V Battery
1004 TA15
2.5V Reference
Low Noise Reference
VIN ≥ 5V
5V
9V
1004 TA12
100µA
50k
510k
22Ω
2.500V
1.235V
OUTPUT
LT1004-2.5
LT1004-1.2
+
LT1004-1.2
50µF
1004 TA10
1004 TA11
1004 TA09
SW
W
SCHE ATIC DIAGRA
LT1004-1.2
LT1004-2.5
+
7.5k
+
7.5k
Q13
Q3
200k
Q3
20pF
20pF
Q12
Q4
Q12
Q4
Q13
200k
20pF
Q11
20pF
Q11
Q1
Q1
50k
50k
600k
600k
Q10
Q10
300k
300k
Q5
Q8
Q6
500k
Q5
Q9 Q14
500Ω
500k
–
1004-1.2 SD
6
Q9 Q14
Q8
Q6
60k
500k
500Ω
500k
60k
–
1004-2.5 SD
LT1004
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PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
H Package
2-Lead and 3-Lead TO-46 Metal Can
Z Package
3-Lead Plastic TO-92 (Similar to TO-226)
(LTC DWG # 05-08-1340)
(LTC DWG # 05-08-1410)
0.060 ± 0.010
(1.524 ± 0.254)
0.209 – 0.219
(5.309 – 5.537)
0.178 – 0.195
(4.521 – 4.953)
0.085 – 0.105
(2.159 – 2.667)
0.140 ± 0.010
(3.556 ± 0.127)
0.500
(12.700)
MIN
REFERENCE
PLANE
*
0.025
(0.635)
MAX
0.016 – 0.019**
(0.406 – 0.483)
DIA
0.050
(1.270)
TYP
0.100
(2.540)
TYP
0.180 ± 0.005
(4.572 ± 0.127)
0.060 ± 0.005
(1.524± 0.127)
DIA
Z3 (TO-92) 0695
10° NOM
0.90
(2.286)
NOM
0.180 ± 0.005
(4.572 ± 0.127)
0.050
(1.270)
TYP
PIN 1
FOR 3-LEAD PACKAGE ONLY
0.500
(12.70)
MIN
5°
NOM
0.050 UNCONTROLLED
(1.270) LEAD DIMENSION
MAX
45°
0.028 – 0.048
(0.711 – 1.219)
0.036 – 0.046
(0.914 – 1.168)
*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)
0.015 ± 0.002
(0.381 ± 0.051)
0.016 ± 0.003
(0.406 ± 0.076)
0.050 ± 0.005
(1.270 ± 0.127)
H02/03(TO-46) 1197
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
0.010 – 0.020
× 45°
(0.254 – 0.508)
0.008 – 0.010
(0.203 – 0.254)
0.053 – 0.069
(1.346 – 1.752)
0°– 8° TYP
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
*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
8
7
6
5
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
TYP
0.150 – 0.157**
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
1
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.
2
3
4
SO8 0996
7
LT1004
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TYPICAL APPLICATIONS
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%
3.2k
4
3
2765Ω
0.1%
–
1/2
LT1002
13
10
+
1/2
LT1002
+
11
–
10k
0.1%
6
VOUT
0V TO10V
0°C TO 100°C
10k
0.1%
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
8
Linear Technology Corporation
1004fa LT/TP 1198 REV A 2K • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 ● FAX: (408) 434-0507 ● www.linear-tech.com
 LINEAR TECHNOLOGY CORPORATION 1985