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Advanced Monolithic Systems
FEATURES
AMS3100
ADJUSTABLE MICROPOWER VOLTAGE REFERENCE DIODE
RoHS compliant
APPLICATIONS
* Battery Powered Systems * Instrumentation * A/D, D/A Converters * Temperature measurement * Current sources * Notebook/Personal Computer * Monitors/ VCR/ TV * Pagers * Adjustable from 1.24V to 5.30V * Operating Current 10A to 20mA * 1% and 2% Initial Tolerance * 1 Dynamic Impedance * Low Temperature Coefficient * 1.2V Device and 2.5V Device also available
GENERAL DESCRIPTION
The AMS3100 are two-terminal micropower band-gap voltage reference that feature a very low dynamic impedance and good temperature coefficient, operating from 1.24V to 5.3V and over a 10A to 20mA current range. AMS3100 is trimmed at wafer test level to optimize the temperature coefficient and tight output voltage tolerance. The advanced process technology used, makes the AMS3100 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, 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. Further more, the wide operating current allows it to replace older references with a tight tolerance part. Pin to pin compatible with other standard industry references, the AMS3100 offers the advantage of long term stability at low cost. The AMS3100 is operating over a -40C to 85C temperature range and is available in the space saving SOT-23 package.
ORDERING INFORMATION:
TOL. PACKAGE TYPE OPERATING TEMPERATURE RANGE -40C to 85C -40C to 85C -40C to 85C
SOT-23 12mV AMS3100AM 25mV AMS3100BM 25mV AMS3100CM
PIN CONNECTIONS
3L SOT-23 (M)
3 -
1 A
2 +
A = Adjust pin.
Top View
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100
ABSOLUTE MAXIMUM RATINGS
Reverse Current Forward Current Operating Temperature Range Storage temperature 30mA 10mA -40C to 85C -55C to +150C Lead Temperature (25 sec) 215C
Thermal Resistance (JA)
410C/W
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 100 A, and TA = +25C unless otherwise specified. Parameter
Reference Voltage Dynamic Output Impedance
Conditions
IR =100 A IAC =0.1IR, f = 20Hz VOUT = VREF VOUT = 5.3V 10A IR 1mA 1mA IR 20mA VOUT = VREF VOUT = 5.3V 10Hz f 10kHz VOUT = VREF VOUT = 5.3V
Min
1.238
AMS3100A Typ Max
1.250 0.3 0.7 0.2 4 6 30 1.0 10 9 45 1.262
Min
1.225
AMS3100B Typ Max
1.250 0.3 0.7 0.2 4 6 30 1.0 10 9 45 1.275
Min
1.225
AMS3100C Typ Max
1.250 0.3 0.7 0.2 4 6 30 1.0 10 9 45 1.275
Units
V
Reference Voltage Change with Current Min. Operating Current (Note 3) Wide Band Noise (Note 4)
mV mV A A
50 170 25
50 170 50
50 170 100 150
Vrms Vrms ppm/C
Temperature Coeff. (Note 5) Long Term Stability (Note 4) TA=25C.1C T = 1000 Hr 20
20
20
ppm
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Note 2: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25C. Note 3: Guaranteed and 100% production tested Note 4: Guaranteed but not 100% production tested. These limits are not used to calculate average outgoing quality levels. Note 5: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between the operating TMAX and TMIN, divided by TMAX - TMIN. The measured temperatures are -40C, 25C and 85C.
TYPICAL APPLICATIONS
1.2V Reference
9V R1 500k 1.2V + AMS3100 FB
AMS3100 FB +
5.0V Reference
9V R1 50k
Precision 10V Reference
15V R1 5k VOUT 10V + AMS3100 FB R3 68.1k 1% R2 301k 1%
R3 VOUT = 1.24 R2 + 1
5V R2 120k
R3 364k
-
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100
TYPICAL APPLICATIONS (Continued)
Low AC Noise Reference
15V R1 100k VOUT 10V + AMS3100 C1 0.47F FB + C2 10F R2 120k
Current Source
+15V
+ AMS3100 FB
R1
2N2905 2N3964 R2 120k
R4 33
R3 360k
1 A< I < 100 mA 1.24V IOUT = R1
25V Low Current Shunt Regulator
V+ R3
200mA Shunt Regulator
V+ R4 50 A< I < 200 mA VOUT 2.5V
100 A< I < 5 mA VOUT 25V + R1 120k FB R2 2.4M
+ AMS3100 2N2219 R3 1k FB
R1 120k
AMS3100 2N5115
R2 120k
Voltage Level Detector
Voltage Level Detector
+ AMS3100 D1 FB
R1 120k D1 R2 1M
+ AMS3100 FB
R1 120k
R3 200 -5V
R2 1M R3 330
< -12V LED ON -5V
> -12V LED ON
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100
TYPICAL APPLICATIONS (Continued)
Bidirectional Clamp 2.4V
VIN I R1 VOUT D2 1N457 AMS3100 +
Bidirectional Adjustable Clamp 1.8V to 2.4V
VIN I R1 VOUT D2 1N457
Bidirectional Adjustable Clamp 2.4V to 6V
VIN I R1 VOUT + AMS3100 R2 330k FB R3 1M FB R4 330k D2 1N457 AMS3100 +
+ AMS3100 D1 1N457 FB
R2 510k FB R3 510k
R2 510k FB + AMS3100 D1 1N457 R3 510k FB R4 390k
-
AMS3100 +
D1 1N457
TYPICAL PERFORMANCE CHARACTERISTICS
REFERENCE VOLTAGE CHANGE (mV)
AMS3100 Typical Temperature Coefficient
0 Y T -5
TEMPCO = Y T
-10 -50 -40 -25 0 25 50 75 80 100 125 TEMPERATURE ( C)
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Reverse Characteristics OUTPUT VOLTAGE CHANGE (mV) 10 8 6 4 2 0 -2 0.01 0.1 1 10 100 REVERSE CURRENT (mA)
T A =25 C T A =-40 C
Reverse Characteristics 100 REVERSE CURRENT (A) FORWARD VOLTAGE (V) 1.2
Forward Characteristics
TA =85 C
T A =-40 C
10
TA =85 C
0.8
1
TA =-40 C
0.4
TA =25 C T A =85 C
T A =25 C
0.1 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 REVERSE VOLTAGE (V) Feedback Current 25 FEEDBACK CURRENT (nA) 20 15 10 MINIMUM CURRENT (A)
IR= 100A IR= 100A
0 0.01 0.1 1 10
Temperature Drift of 3 Representative Units 1.270 REFERENCE VOLTAGE (V)
Minimum Operating Current 80 70 60 50 40 30 20
TYP @ 25 C AMS3100 WORST CASE
1.260
1.250
VOUT = VREF
VOUT = 5.3V
1.240
5 0 -50 -25 0 25 50 75 100 125 TEMPERATURE ( C) Output Noise Voltage
1.230 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE ( C) Dynamic Output Impedance 100
10 0 1 5 2 3 4 OUTPUT VOLTAGE (V) Response Time 6 5
10,000
IR= 100A IR= 0.1IR T A =25 C VOUT = VREF IR= 100A V OUT = 5.3V
OUTPUT IMPEDANCE ()
OUTPUT INPUT 50k OUTPUT 120k AMS3100 364k
NOISE (nV/Hz)
4 1,000
VOUT = VREF
10
VOUT = 5.3V
VOLTAGE (V)
3 2 1 0 10
1
100
INPUT
0.1 10 100 1k 10k FREQUENCY (Hz) 100k
10 10 100 1k 10k FREQUENCY (Hz) 100k
0 0 50 100 150 200 TIME (s)
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
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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