Advanced Monolithic Systems AMS4041 Service Manual
http://www.BDTIC.com/AMS
Advanced AMS4041
Monolithic MICROPOWER SHUNT VOLTAGE REFERENCE
Systems
RoHS compliant
FEATURES APPLICATIONS
• Tight Output Voltage Tolerance • Battery Powered Systems
• Low Output Noise • Instrumentation
• Operating Current 60µA to 100mA • Energy Management
• Low Dynamic Impedance • Automotive
• Low Temperature Coefficient • Precision Audio Components
• Available in the sub-miniature SOT-23 Package • Product Testing
• 2.5V Device ( AMS4040) also available • Data Acquisition Systems
GENERAL DESCRIPTION
The AMS4041 is a two-terminal micropower band-gap voltage reference diode featuring a very low dynamic impedance and
good temperature coefficient, operating over a 60µA to 100mA current range. On-chip trimming is used to provide tight
voltage tolerance. Since the AMS4041 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 AMS4041 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 AMS4041 is operational in the full industrial temperature range of -40°C to 85°and is available in small space saving TO92, SO-8, SOT-89 and SOT-23 packages.
ORDERING INFORMATION
TOL. PACKAGE TYPE OPERATING
TO-92 8 LEAD SOIC SOT-89 3 LEAD SOT-23
±0.25%
±0.5%
±1.0%
AMS4041AN AMS4041AS AMS4041AL AMS4041AM
AMS4041BN AMS4041BS AMS4041BL AMS4041BM
AMS4041CN AMS4041CS AMS4041CL AMS4041CM
PIN CONNECTIONS
TO-92 8L SOIC SOT-89 3L SOT-23
Plastic Package (N) SO Package (S) (L) (M)
-
+
N/C
Bottom View Top View Top View Top View
123
:
TEMP. RANGE
-40 to +85° C
-40 to +85° C
-40 to +85° C
N/C
N/C
N/C
1
2
3
4
-
8
+
7
N/C
N/C
6
5
N/C
3 *
123
*This pin must be left floating
or connected to pin 2
21
+-
Advanced Monolithic Systems, Inc.
AMS4041
http://www.BDTIC.com/AMS
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current 100mA Internal Power Dissipation (PD)
Forward Current 10mA TO-92 Package 0.78W
Storage temperature
Lead Temperature (25 sec)
-65°C to +150°C
265°C
SOT-23 Package 0.28W
TO-92 Package
SO-8 Package
SOT-89 Package
SOT-23 Package
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.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR =100 µA and TA = +25°C unless otherwise specified.
Parameter
Conditions
AMS4041A
Min Typ Max
SO-8 Package 0.71W
SOT-89 Package 0.91W
Thermal Resistance (θ
)
JA
160°C/W
175°C/W
110°C/W
410°C/W
AMS4041B
Min Typ Max
AMS4041C
Min Typ Max
Units
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.
1.222 1.225 1.228 1.219 1.225 1.231 1.213 1.225 1.237 V
= Full Range 8.0 17 8.0 17 8.0 25 mV
T
A
≤ IR ≤ 1mA
I
RMIN
≤ IR ≤ 15mA
1mA
=25°C±.1°C
T
A
T = 1000 Hr
≤ f ≤ 10kHz
10HZ
IR = 1mA, f = 120Hz,
IAC = 0.1IR
120 120 120 ppm
20 20 20
0.5 1.5 0. 5 1.5 0.5 2.0
60 80
0.7
4.0
1.5
2.0
6.0
8.0
100
0.7 1.5
2.5 6.0
60 80
TYPICAL APPLICATIONS
Shunt Regulator
V
S
2.0
8.0
100
0.7 2.0
2.5
2.5 8.0
10.0
µV
60 80
100
mV
mV
Ω
µA
rms
Advanced Monolithic Systems, Inc.
AMS4041
IQ + I
R
S
V
R
L
I
L
I
Q
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