Micropower Voltage Reference
CA1004
FEATURES
••V ery Tight Initial V oltage T olerance
1004-1.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5mV
1 0 04-2.5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mV
••Very Low Op e rati ng Current
1004-1.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10µA
1004-2.5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20µA
••Wide Operating Current Range . . . . . . . . 10µA t o 20mA
••Very Low Dynamic Impedence. . . . . . . . . . . . . 0.6 Max.
PRODUCT DESCRI PTI ON
The CA1004 is a two-terminal, temperature compensated,
micropower band-gap voltage reference, which provides a
fixed voltage for a wide range of input currents (10µA to
20mA). The high stability of the device is primaril y the result
of the low temperature coefficient Thi n Film Resistor process
and the tight output voltage tolerance is obtained by resistor
Laser trimming at the wafer level. This gives the benefit of
elimin ating the need of extern al volta ge adjustme nt.
ORDERING INFORMATION
Part Pa ckage M ax Te m p co Tem p Ran g e
(ppm/oC)
CA1004N1 ( 1.2) TO -92 100 0oC to +70oC
CA1004BY1 ( 1.2) SOIC 100 -40 oC to +85oC
CA1004N2 ( 2.5) TO -92 100 0oC to +70oC
CA1004BY2 ( 2.5) SOIC 100 -40 oC to +85oC
PIN CONFIGUR ATIO NS
CORPORATION
TO-92
TO-92 (N-SUFFIX)
BOTTOM VIEW
123
SO-8
876 5
1 2 3 4
NC NC NC+
NC NC -NC
SO PACKAGE
(Y-SUFFIX)
BOTTOM VIEW
CA1004
CORPORATION
ABSOLUTE M AXIM UM R A T INGS
Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Revers e Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Oper at ing Temper at ure R a nge
TO-92 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to +70oC
SOIC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40oC to +85oC
Stor age Tem per atur e Ra nge
TO-92 . . . . . . . . . . . . . . . . . . . . . . . . . . -65oC to +150oC
SOIC. . . . . . . . . . . . . . . . . . . . . . . . . . . -65oC to +150oC
Lead Tempe ra ture (10 sec .). . . . . . . . . . . . . . . . . . . . . +300 oC
SPECIFICATIONS: At Iin = 100µA and T A = + 25oC unless other wise spec ified.
PARAMETERS CA1004 UNITS CONDITIONS
MIN TYP MAX
Output Voltage 1.235
2.480 1.25
2.500 1.265
2.520 V1004-1, 2
1004-2, 5
Min Operatin g Curre nt 10
20 µA1004-1, 2
1004-2, 5
Output Voltage Change With Current 2.0
20 mV 10µA ≤ Iin ≤ 1mA
1mA ≤ Iin ≤ 20mA
Temperature Coefficient 100 ppm/oC
Dynamic Impedence 1.0 Ω
Wide Band Noise 60 µV 10Hz f 1 0KHz
Long Term Stability 20 ppm/KHr TA = 25oC ±.1oC
