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參數資料
| 型號： | AMS9491BS |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 英文描述： | 1.235V VOLTAGE REFERENCE |
| 中文描述： | 1.235V電壓基準 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 75K |
| 代理商： | AMS9491BS |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS9491
Monolithic
1.235V VOLTAGE REFERENCE
Systems
FEATURES
±
10 mV max. initial tolerance (A grade)
Operating Current 10
μ
A to 20mA
Low Voltage Reference 1.235
Max. 0.6
Dynamic Impedance (A grade)
Low Temperature Coefficient
APPLICATIONS
Battery Powered Systems
Instrumentation
A/D, D/A Converters
Temperature measurement
Current sources
Pagers
GENERAL DESCRIPTION
The AMS9491 is a two-terminal micropower band-gap voltage reference diode. It feature a very low dynamic impedance and
good temperature coefficient, operating over a 10
μ
A to 20mA current range. On-chip trimming is used to provide tight
voltage tolerance. Since the AMS9491 is a band-gap reference, uses only transistors and resistors, low noise and good long-
term stability result. Careful design of the AMS9491 has made the device exceptionally tolerant of capacitive loading, making
it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying
supplies with excellent regulation. The extremely low power drain of the AMS9491 makes this reference diode useful for
micropower circuitry.
The AMS9491 can be used to make portable meters, regulators or general purpose analog circuitry with battery life
approaching shelf life. Further more, the wide operating current allows it to replace older references with a tight tolerance
part.
The AMS9491 is operating over a 0
°
C to 70
°
C temperature range and is available in TO-92 and SO-8 packages.
ORDERING INFORMATION
:
TOL.
PACKAGE TYPE
TO-92
OPERATING
TEMPERATURE RANGE
0 to 70
°
C
0 to 70
°
C
8 LEAD SOIC
AMS9491AS
AMS9491BS
±
10mV AMS9491AN
±
20mV AMS9491BN
PIN CONNECTIONS
TO-92
8L SOIC
SO Package (S)
Plastic Package (N)
1
3
1
2
8
4
-
3
7
5
6
N/C
N/C
N/C
N/C N/C
N/C
+
Bottom View
Top View
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