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 perfor-
mance, 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
CATHODE
Ordering Information
Description
Temperature Range
Order Codes
TO-92
8-Pin Plastic SOIC
SOT-89
© ASTEC Semiconductor
0 to 70° C
0 to 70° C
0 to 70° C
29
AS1004-1.2LP
AS1004-1.2D
AS1004-1.2S
AS1004-2.5LP
AS1004-2.5D
AS1004-2.5S
ASTEC [ Astec America, Inc ]
