CALOGIC CLM285-12 Micropower voltage reference diode Datasheet

Micropower
Voltage Reference Diode
CORPORATION
CLM285-1.2 / CLM385-1.2
FEATURES
• Tight Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . 1% - 2%
• Operating Current . . . . . . . . . . . . . . . . . . . . 10µA - 20mA
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . 1Ω
• Dynamic
• Low Temperature Coefficient
PRODUCT DESCRIPTION
ORDERING INFORMATION
Part
CLM285Y1
CLM385T1
CLM385N1
CLM385Y1
Package Max Tempco (ppm) Temp Range
SOIC
TO-46
TO-92
SOIC
100
100
100
100
The CLM285 / 385 - 1.2 are micropower 2 terminal band- gap
voltage regulator diodes. Operating over a wide current range
of 10µA to 20mA with low dynamic impedance and stable
temperature characteristics. Calogic utilizes on-chip trimming to
provide tight voltage tolerances.
The devices are excellent in portable meters, regulators or
general purpose analog circuitry with battery life approaching
shelf life.
PIN CONFIGURATIONS
SO-8
TO-92
+
8
3
2
NC
NC
7
6
5
1
TO-92 (N-SUFFIX)
BOTTOM VIEW
1004
NC
1
2
3
NC
NC
NC
SO PACKAGE
(Y-SUFFIX)
BOTTOM VIEW
4
-
-40oC to +85oC
0oC to +70oC
0oC to +70oC
0oC to +70oC
CLM285-1.2 / CLM385-1.2
CORPORATION
ABSOLUTE MAXIMUM RATINGS
Storage Temperature . . . . . . . . . . . . . . . . . . -55oC to +150oC
Soldering Information
TO-92 Package (10 sec.). . . . . . . . . . . . . . . . . . . . . 260oC
SO Package: Vapor Phase (60 sec.) . . . . . . . . . . 215oC
Infrared (15 sec.) . . . . . . . . . . . . . . 220oC
Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Operating Temperature Range
CLM285-1.2 . . . . . . . . . . . . . . . . . . . . . . . . -40oC to +85oC
CLM385-1.2 . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to +70oC
ELECTRICAL CHARACTERISTICS (Note 1)
CLM285-1.2
PARAMETER
TYP
Reverse
Breakdown
Voltage
Minimum
Operating Current
1.235
TESTED
LIMIT
(NOTE 2)
CLM385-1.2
DESIGN
LIMIT
(NOTE 3)
1.220
1.245
TYP
1.235
1.235
8
UNITS
TESTED DESIGN
(LIMITS)
LIMIT
LIMIT
(NOTE 2) (NOTE 3)
1.223
1.247
1.225
1.245
VMIN
VMAX
VMIN
VMAX
CLM385-1.2
10
µA
1.5
1
1.5
mV
IMIN ≤ I R ≤ 1mA
20
10
20
mV
1mA ≤ IR ≤ 20mA
1.5
Ω
IR = 100µA, f = 20Hz
IR = 100µA
10Hz ≤ f ≤ 10kHz
10
Reverse
Breakdown
1
Voltage Change
with Current
10
8
Reverse Dynamic
Impedance
1
Wideband Noise
(rms)
60
60
µV
Long Term
Stability
20
20
ppm
1.5
50
TA = 25oC, 1MIN ≤ I R ≤ I MAX
CLM285-1.2/CLM385B-1.2
15
8
Average
Temperature
Coefficient (Note 4)
CONDITIONS
1
100
50
100
ppm/oC
IR = 100µA, T = 1000Hr
TA = 25oC ±.0.1oC
IR = 100µA
Note 1: Parameters identified with boldface type apply at temperature extremes and for IMIN < I R < 20mA, unless otherwise specified. All other
numbers apply at TA = TJ = 25oC.
Note 2: Guaranteed and 100% production tested.
Note 3: Guaranteed (but not 100% production tested) over the operating temperature and input current ranges. These limits are not to be used
to calculate outgoing quality levels.
Note 4: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between
the operating TMAX and TMIN, divided by TMAX-TMIN. The measured temperatures are -55oC, -40 oC, 0oC, 25 oC, 70 oC, 85oC, 125oC.
Note 5: For elevated temperature operation, T j max is:
CLM285 125oC
CLM385 100oC
Thermal Resistance
θja (Junction to Ambient)
θjc (Junction to Case)
TO-92
SO-8
180oC/W (0.4" leads)
170oC/W (0.125" leads)
165oC/W
N/A
N/A
CLM285-1.2 / CLM385-1.2
CORPORATION
APPLICATIONS
WIDE INPUT RANGE
REFERENCE
VIN = 2.3V TO 30V
LM334
Adustable
Current Source
4.3k
OUT
1.2V
CLM385-1.2
CENTIGRADE THERMOMETER
V
+
LM334
1.5V*
V
-
2.2k
R
V1
V2
90k
25k
OUTPUT
1mV/˚C
27k
CLM385-1.2
7.2k
R1
1k
CALIBRATION
1. ADJUST R1 SO THAT V1 = TEMP AT 1mV/˚K
2. ADJUST V2 TO 273.2mV
* I Q FOR 1.3V TO 1.6V BATTERY VOLTAGE = 50µA TO 150 µA
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