ADMOS AMS4040CS, AMS4040CN, AMS4040CM, AMS4040CL, AMS4040BS Datasheet
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Advanced AMS4040
Monolithic MICROPOWER SHUNT VOLTAGE REFERENCE
Systems
FEATURES APPLICATIONS
•• Tight Output Voltage Tolerance •• Battery Powered Systems
•• Low Output Noise •• Instrumentation
•• Operating Current 250µµA to 100mA •• Energy Management
•• Low Dynamic Impedance •• Automotive
•• Low Temperature Coefficient •• Precision Audio Components
•• Available in the sub-miniature SOT-23 Package •• Product Testing
•• 1.2V Device ( AMS4041) also available •• 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 250µA 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 OPERATING
±0.25%
±0.5%
±1.0%
TO-92 8 LEAD SOIC SOT-89 3 LEAD SOT-23
AMS4040AN AMS4040AS AMS4040AL AMS4040AM
AMS4040BN AMS4040BS AMS4040BL AMS4040BM
AMS4040CN AMS4040CS AMS4040CL AMS4040CM
TEMP. RANGE
-40 to +85° C
-40 to +85° C
-40 to +85° C
PIN CONNECTIONS
TO-92 8L SOIC SOT-89 3L SOT-23
Plastic Package (N) SO Package (S) (L) (M)
-+N/C
123
N/C
N/C
N/C
1
2
3
4
-
8
+
N/C
7
N/C
6
5
N/C
1 2 3
*This pin must be left floating
or connected to pin 2
Bottom View Top View Top View Top View
3 *
+ -
21
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS4040
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current 100mA Internal Power Dissipation (PD)
Forward Current 10mA TO-92 Package 0.78W
Storage temperature
-65°C to +150°C
Lead Temperature SOT-89 Package 0.91W
TO-92 package (Soldering 10 sec.)
265°C
SO-8 and SOT-23 packages:
Vapor phase (60 sec)
Infrared (15 sec.)
SOT-89 package (Soldering 10 sec.)
Note1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the
Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed.
220°C
265°C
215°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR =100 µA and TA = +25°C unless otherwise specified.
SO-8 Package 0.71W
SOT-23 Package 0.28W
Thermal Resistance (θJA)
TO-92 Package
SO-8 Package
SOT-89 Package
SOT-23 Package
160°C/W
175°C/W
110°C/W
410°C/W
Parameter Conditions
Reverse Breakdown
Voltage
Deviation of Reverse
Breakdown Voltage over
Temperature
Reverse Breakdown
Voltage Change with
Operating Current
Change
Reverse Breakdown
Voltage Long Term
Stability
Wide Band Noise
Reverse Dynamic
Impedance
Minimum Operating
Current
Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C.
TA = Full Range 8.0 17 8.0 17 8.0 25 mV
I
≤ IR ≤ 1mA
RMIN
1mA ≤ IR ≤ 15mA
TA=25°C±.1°C
T = 1000 Hr
10HZ ≤ f ≤ 10kHz
IR = 1mA, f = 120Hz,
IAC = 0.1I
R
AMS4040A
Min Typ Max
2.494 2.500 2.506 2.488 2.500 2.512 2.475 2.500 2.525 V
0.3
2.5
120 120 120 ppm
35 35 35
0.25 0.5 0.25 0.5 0.25 0.5
80 2500 80 250 80 250
0.8
1.0
6.0
8.0
AMS4040B
Min Typ Max
0.3 0.8
2.5 6.0
TYPICAL APPLICATIONS
1.0
8.0
AMS4040C
Min Typ Max
0.3 0.8
1.0
2.5 6.0
8.0
Units
mV
mV
µV
rms
Ω
µA
Shunt Regulator
V
S
IQ + I
L
I
L
I
Q
AMS4040-2.5
R
S
V
R
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
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