www.DataSheet4U.com
Micropower Voltage Reference
Features Description
The AS1004 is a two-terminal precision band-gap v...
www.DataSheet4U.com
Micropower
Voltage Reference
Features Description
The AS1004 is a two-terminal precision band-gap
voltage reference with a low turn-on current of 10 µA. Emulating a 1.235 V zener diode, the AS1004 operates more than three orders of magnitude of output current with minute output impedance and guaranteed stability. With an initial tolerance of ± 4 mV and guaranteed temperature performance, it is ideal for precision instrumentation, especially in low power applications. Being a low-
voltage reference, the AS1004 is also well-suited as a reference for low-
voltage power supply applications, especially in power supplies intended for low-
voltage logic systems, laptop computers and other portable or battery operated equipment. The AS1004 is pin-for-pin compatible with the LT1004 and the LM385 and offers improved specifications over both the LM385 and the MP5010. It is also available as a 2.5 V reference with a guaranteed start-up current of 20 µA.
AS1004
Low
voltage reference 10 µA turn-on current for AS1004-1.2 20 µA turn-on current for AS1004-2.5 ± 4 mV (0.3 %) initial accuracy for AS1004-1.2 ± 20 mV (0.8 %) initial accuracy for AS1004-2.5 Guaranteed operation to 20 mA. Over three orders of magnitude of operating current! Temperature performance guaranteed Very low dynamic impedance
Pin Configuration —
TO-92 (LP)
Top view
SOIC (D)
SOT-89 (S)
N/C
1 2 3 4
8 7 6 5
CATHODE N/C
ANODE
N/C
N/C
CATHODE
N/C CATHODE ANODE
ANODE
N/C
ANODE
...