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LT1004CS8-2.5

Micropower Voltage References



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LT1004CS8-2.5 pdf
FEATURES
s Guaranteed ±4mV Initial Accuracy LT1004-1.2
s Guaranteed ±20mV Accuracy LT1004-2.5
s Guaranteed 10µA Operating Current
s Guaranteed Temperature Performance
s Operates up to 20mA
s Very Low Dynamic Impedance
U
APPLICATIONS
s Portable Meter References
s Portable Test Instruments
s Battery-Operated Systems
s Current Loop Instrumentation
LT1004
Micropower Voltage
Reference
DESCRIPTION
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 attain-
able 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 accu-
racy specifications. More important, the LT1004 is an
attractive device for use in systems where accuracy was
previously obtained at the expense of power consump-
tion 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.
TYPICAL APPLICATION
Micropower Cold Junction Compensation for Thermocouples
100k
3V
LITHIUM
*
R1
LT1004-1.2
1684
186
5k AT
25°C
+
1.8k
+
THERMOCOUPLE
TYPE
J
R1
233k
K 299k
T 300k
S 2.1M
* QUIESCENT CURRENT 15µA
† YELLOW SPRINGS INST. CO.
PART #44007
COMPENSATES WITHIN
±1°C FROM 0°C TO 60°C
1004 TA01
Typical Distribution of
Reference Voltage (LT1004-1.2)
200
180 1200 PARTS
TA = 25°C
160
140
120
100
80
60
40
20
1004 TA02
1



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LT1004CS8-2.5 pdf
LT1004
ABSOLUTE MAXIMUM RATINGS
(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
PACKAGE/ORDER INFORMATION
BOTTOM VIEW
12
TJMAX = 150°C
θJA = 440°C/ W
θJC = 80°C/ W
H PACKAGE
2-LEAD TO-46 METAL CAN
ORDER PART
NUMBER
LT1004MH-1.2
LT1004MH-2.5
LT1004CH-1.2
LT1004CH-2.5
BOTTOM VIEW
321
TJMAX = 100°C
θJA = 160°C/ W
Z PACKAGE
3-LEAD PLASTIC TO-92
LT1004CZ-1.2
LT1004CZ-2.5
LT1004IZ-1.2
LT1004IZ-2.5
TOP VIEW
NC 1
NC 2
NC 3
GND 4
8 VOUT
7 NC
6 VOUT
5 NC (DO NOT USE)
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 100°C, θJA = 150°C/ W
LT1004CS8-1.2
LT1004CS8-2.5
LT1004IS8-1.2
LT1004IS8-2.5
S8 PART MARKING
0412 0425
0412I 0425I
ELECTRICAL CHARACTERISTICS (Note 2)
SYMBOL PARAMETER
CONDITIONS
LT1004-1.2
MIN TYP MAX
LT1004-2.5
MIN TYP MAX
UNITS
VZ
VZ
Temp
Reverse Breakdown Voltage
Average Temperature Coefficient
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)
1.231 1.235 1.239
q 1.220 1.230 1.245
q 1.225 1.235 1.245
q 1.220 1.230 1.245
50
2.480
2.460
2.470
2.460
2.500
2.500
2.500
2.500
50
2.520
2.535
2.530
2.530
V
V
V
V
ppm/°C
IMIN Minimum Operating Current
VZ Reverse Breakdown Voltage
IR Change with Current
IMIN IR 1mA
1mA IR 20mA
q 8 10
1.0
q 1.5
10
q 20
12 20
1.0
1.5
10
20
µA
mV
mV
mV
mV
rZ Reverse Dynamic Impedance IR = 100µA
0.2 0.6
q 1.5
0.2 0.6
1.5
en Wide Band Noise (RMS)
IR = 100µA
10Hz f 10kHz
60 120 µV
VZ Long Term Stability
Time
IR = 100µA
TA = 25°C ± 0.1°C
20 20 ppm/kHr
The q 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.
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.
2



Part Number LT1004CS8-2.5
Description Micropower Voltage References
Maker Linear Technology - Linear Technology
Total Page 8 Pages
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