AS1004 Datasheet | ASTEC

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 m V 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 puters and other portable or battery operated equipment. The AS1004 is pin-for-pin patible 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. - - - - - - - - Low voltage reference 10 µA turn-on current for AS1004-1.2 20 µA turn-on current for AS1004-2.5 ± 4 m V (0.3 %) initial accuracy for AS1004-1.2 ± 20 m V (0.8 %) initial accuracy for AS1004-2.5 Guaranteed operation to 20 m A. 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 AS1004-1.2LP AS1004-1.2D AS1004-1.2S AS1004-2.5LP AS1004-2.5D AS1004-2.5S Simplified Schematic Micropower Voltage Reference R2 Q13 Q12 Q4 Q3 C2 R10 Q7 R4 Q11 C3 R11 Q5 Q10 Q1...