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Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS4040
Monolithic
MICROPOWER SHUNT VOLTAGE REFERENCE
Systems
FEATURES
Tight Output Voltage Tolerance
Low Output Noise
Operating Current 250
μ
A to 100mA
Low Dynamic Impedance
Low Temperature Coefficient
Available in the sub-miniature SOT-23 Package
1.2V Device ( AMS4041) also available
APPLICATIONS
Battery Powered Systems
Instrumentation
Energy Management
Automotive
Precision Audio Components
Product Testing
Data Acquisition Systems
GENERAL DESCRIPTION
The AMS4040 is a two-terminal micropower band-gap voltage reference diode featuring a very low dynamic impedance and
good temperature coefficient, operating over a 250
μ
A to 100mA current range. On-chip trimming is used to provide tight
voltage tolerance. Since the AMS4040 band-gap reference uses only transistors and resistors, low noise and good long term
stability result. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The
extremely low power drain of the AMS4040 makes these reference diodes useful for micropower circuitry. These voltage
references can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching
shelf life.
The AMS4040 is operational in the full industrial temperature range of -40
°
C to +85
°
and is available in small space saving
TO-92, SO-8, SOT-89 and SOT-23 packages.
ORDERING INFORMATION
:
TOL.
PACKAGE TYPE
8 LEAD SOIC
AMS4040AS
AMS4040BS
AMS4040CS
OPERATING
TEMP. RANGE
-40 to +85
°
C
-40 to +85
°
C
-40 to +85
°
C
TO-92
SOT-89
3 LEAD SOT-23
AMS4040AM
AMS4040BM
AMS4040CM
±
0.25%
±
0.5%
±
1.0%
AMS4040AN
AMS4040BN
AMS4040CN
AMS4040AL
AMS4040BL
AMS4040CL
PIN CONNECTIONS
TO-92
8L SOIC
SO Package (S)
SOT-89
(L)
3L SOT-23
(M)
Plastic Package (N)
1
2
3
-
+
N/C
N/C
N/C
N/C
N/C
N/C
N/C
+
-
1
2
8
4
3
7
5
6
1
2
3
+
-
3 *
2
1
*This pin must be left floating
or connected to pin 2
Top View
Bottom View
Top View
Top View