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Advanced Monolithic Systems
FEATURES
* Tight Output Voltage Tolerance * Low Output Noise * Operating Current 60A to 100mA * Low Dynamic Impedance * Low Temperature Coefficient * Available in the sub-miniature SOT-23 Package * 2.5V Device ( AMS4040) also available
AMS4041
MICROPOWER SHUNT VOLTAGE REFERENCE
RoHS compliant
APPLICATIONS
* Battery Powered Systems * Instrumentation * Energy Management * Automotive * Precision Audio Components * Product Testing * 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 60A 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 -40C to 85and is available in small space saving TO92, SO-8, SOT-89 and SOT-23 packages.
ORDERING INFORMATION:
TOL. 0.25% 0.5% 1.0% TO-92 AMS4041AN AMS4041BN AMS4041CN PACKAGE TYPE 8 LEAD SOIC AMS4041AS AMS4041BS AMS4041CS SOT-89 AMS4041AL AMS4041BL AMS4041CL 3 LEAD SOT-23 AMS4041AM AMS4041BM AMS4041CM OPERATING TEMP. RANGE -40 to +85 C -40 to +85 C -40 to +85 C
PIN CONNECTIONS
TO-92 Plastic Package (N)
N/C 3 + 2 1
8L SOIC SO Package (S)
N/C N/C N/C 1 2 3 4 8 7 6 5 + N/C N/C
SOT-89 (L)
3L SOT-23 (M)
3*
1
2
3
N/C
1 +
2 -
*This pin must be left floating or connected to pin 2
Bottom View
Top View
Top View
Top View
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS4041
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current Forward Current Storage temperature Lead Temperature (25 sec) 100mA 10mA -65C to +150C 265C Internal Power Dissipation (PD) TO-92 Package SO-8 Package SOT-89 Package SOT-23 Package Thermal Resistance (JA) TO-92 Package SO-8 Package SOT-89 Package SOT-23 Package 0.78W 0.71W 0.91W 0.28W 160C/W 175C/W 110C/W 410C/W
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 A and TA = +25C unless otherwise specified. Parameter
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 TA = Full Range IRMIN IR 1mA 1mA IR 15mA
Conditions
Min
1.222
AMS4041A Typ Max
1.225 1.228
Min
1.219
AMS4041B Typ Max
1.225 1.231
Min
1.213
AMS4041C Typ Max
1.225 1.237
Units
V
8.0
17
8.0
17
8.0
25
mV
0.7
1.5 2.0
0.7
1.5 2.0
0.7
2.0 2.5
mV
4.0
6.0 8.0
2.5
6.0 8.0
2.5
8.0 10.0
mV
TA=25C.1C T = 1000 Hr 10HZ f 10kHz IR = 1mA, f = 120Hz, IAC = 0.1IR
120
120
120
ppm Vrms 2.0 80 100 A
20 0.5 60 1.5 80 100
20 0. 5 60 1.5 80 100
20 0.5 60
Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25C.
TYPICAL APPLICATIONS
Shunt Regulator
VS
RS VR AMS4041
IQ + IL IL IQ
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS4041
TYPICAL APPLICATIONS
Precision 1A to 1mA Current Sources
AMS4041
12V AMS4041
R1 20k
2
-
8 1/2 LMC6062 1 4
R1 20k
2
3 IOUT* -1.0V TO -12V
+
8 1/2 LMC6062 3 4 + IOUT* 1.0V TO 12V
-
1
R2
R2
-15V
IOUT=1.2V/R2
Programmable Current Source
12V
30k
12 AOUT LF13006 LF13007
DIGITAL CONTROL
AMS4041 +12V 0.1F 2 INPUT ANA GND 7 8 + 1/2 LMC6062 6 3 + 1/2 LMC6062 4 1 123, 0.5% IOUT 5
2
IOUT = 1.2V/123(1/gain set #)
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS4041
START-UP CHARACTERISTICS
RS VIN 1Hz rate
AMS4041
VR
RS = 30 k
VIN (V)
AMS4041
5 0 TJ = 25C
Test circuit
3
VR (V)
2 1 0
0
20
40
60
80
RESPONSE TIME ( s)
TYPICAL PERFORMANCE CHARACTERISTICS
Temperature Drift for Different Average Temperature Coefficient +0.5 +0.4 +0.3 VR CHANGE (%) +0.2 +0.1 0 -0.1 -0.2 -0.3
-51ppm/ C -22ppm/ C +12ppm/ C IR = 150 A
Reverse Characteristics and Minimum Operating Current 100
TJ =25 C
Noise Voltage vs Frequency 1000
IR = 200 A TJ =25 C
REVERSE CURRENT ( A)
80 60 40 20 0 NOISE (mV/Hz)
800 600 400 200 0 0 0.4 1.2 1.6 0.8 REVERSE VOLTAGE (V) 2.0 1 10 1k 10k 100 FREQUENCY (Hz) 100k
-0.4 -0.5 -40 -20
0 20 40 60 80 TEMPERATURE ( C)
100
Ouput Impedance vs Frequency 1k
IR= 1mA TJ =25 C, IR= 0.1IR
Ouput Impedance vs Frequency 1k
IR= 150A TJ =25 C, IR= 0.1IR CL= 0
IMPEDANCE ()
CL= 0
IMPEDANCE ()
100
100
10
CL= 1F TANTALUM
10
CL= 1F TANTALUM
1
XCL
1
XCL
0.1 100 1k 10k 100k FREQUENCY (Hz) 1M
0.1 100 1k 10k 100k FREQUENCY (Hz) 1M
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS4041
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
3 LEAD TO-92 PLASTIC PACKAGE (N)
0.0600.005 (1.5240.127) DIA
0.1800.005 (4.5720.127) 0.0600.010 (1.5240.254) 0.1400.010 (3.5560.127)
0.1800.005 (4.5720.127)
0.90 (2.286) NOM
5 NOM 0.500 (12.70) MIN
10 NOM
0.050 (1.270) MAX
UNCONTROLLED LEAD DIMENSIONS
0.0500.005 (1.2700.127)
0.0160.003 (0.4060.076)
0.0150.002 (0.3810.051)
N (TO-92 ) AMS DRW# 042391
8 LEAD SOIC PLASTIC PACKAGE (S)
0.189-0.197* (4.801-5.004) 8 7 6 5
0.228-0.244 (5.791-6.197)
0.150-0.157** (3.810-3.988)
1
2
3
4
0.053-0.069 (1.346-1.752) 0.004-0.010 (0.101-0.254) 0.008-0.010 (0.203-0.254)
0.010-0.020 x 45 (0.254-0.508) 0-8 TYP
0.014-0.019 (0.355-0.483)
0.050 (1.270) TYP
0.016-0.050 (0.406-1.270)
S (SO-8 ) AMS DRW# 042293
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS4041
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).
SOT-89 PLASTIC PACKAGE (L)
0.173-0.181 (4.40-4.60) 0.064-0.072 (1.62-1.83)
0.055-0.063 (1.40-1.60) 0.014-0.017 (0.35-0.44)
0.155-0.167 (3.94-4.25) 0.090-0.102 (2.29-2.60) 0.084-0.090 (2.13-2.29)
0.035-0.047 (0.89-1.20) 0.059 (1.50) BSC 0.118 (3.00) BSC 0.014-0.019 (0.36-0.48) 0.017-0.022 (0.44-0.56)
L (SOT-89 ) AMS DRW# 042392
3 LEAD SOT-23 PLASTIC PACKAGE (M)
0.110-0.120 (2.794-3.048) 0.015-0.017 (0.381-0.432)
0.083-0.098 (2.108-2.489) 0.047-0.055 (1.194-1.397)
0.035-0.040 (0.889-1.016)
0.018-0.024 (0.457-0.610)
10 NOM
0.035-0.041 (0.089-1.041) 0.0034-0.0050 (0.086-0.127) 0.0005-0.0040 (0.013-0.102) 0.070-0.080 (1.778-2.032) 10 NOM 0.018-0.024 (0.457-0.610)
(SOT-23 ) AMS DRW# 051991
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723

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