http://www.BDTIC.com/AMS
Advanced AMS3100
Monolithic ADJUSTABLE MICROPOWER VOLTAGE REFERENCE DIODE
Systems
RoHS compliant
FEATURES APPLICATIONS
• Adjustable from 1.24V to 5.30V • Battery Powered Systems
• Operating Current 10µA to 20mA • Instrumentation
• 1% and 2% Initial Tolerance • A/D, D/A Converters
• 1Ω Dynamic Impedance • Temperature measurement
• Low Temperature Coefficient • Current sources
• 1.2V Device and 2.5V Device also available • Notebook/Personal Computer
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 10µA 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 -40°C to 85°C temperature range and is available in the space saving SOT-23 package.
ORDERING INFORMATION:
TOL. PACKAGE TYPE OPERATING
SOT-23
±12mV AMS3100AM
±25mV AMS3100BM
±25mV AMS3100CM
PIN CONNECTIONS
TEMPERATURE RANGE
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
3L SOT-23
(M)
• Monitors/ VCR/ TV
• Pagers
Advanced Monolithic Systems, Inc.
3 -
21
A+
Top View
A = Adjust pin.
http://www.BDTIC.com/AMS
AMS3100
ABSOLUTE MAXIMUM RATINGS
Reverse Current 30mA Lead Temperature (25 sec)
Forward Current 10mA
Operating Temperature Range
Storage temperature
-40°C to 85°C
-55°C to +150°C
Thermal Resistance (θ
) 410°C/W
JA
215°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 100 µA, and TA = +25°C unless otherwise specified.
Parameter
Conditions
AMS3100A
Min Typ Max
AMS3100B
Min Typ Max
AMS3100C
Min Typ Max
Units
Reference Voltage
Dynamic Output
Impedance
Reference Voltage
Change with
Current
Min. Operating
Current (Note 3)
Wide Band Noise
(Note 4)
Temperature Coeff.
=100 µA
I
R
I
=0.1IR, f = 20Hz
AC
V
= V
REF
= 5.3V
≤1mA
R
≤20mA
R
= V
REF
= 5.3V
OUT
V
OUT
10µA ≤I
1mA ≤I
V
OUT
V
OUT
10Hz ≤ f ≤ 10kHz
= V
V
OUT
V
OUT
REF
= 5.3V
1.238 1.250 1.262 1.225 1.250 1.275 1.225 1.250 1.275 V
0.3
0.7
0.2
4
6
30
50
170
25
1.0
10
9
45
0.3
0.7
0.2
4
6
30
50
170
50
0.3
0.7
1.0
0.2 4 1.0
10
9
45
6
30
50
170
100 150
10
9
45
(Note 5)
Long Term Stability
(Note 4)
=25°C±.1°C
T
A
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
Note 2: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at T
. The guaranteed specifications apply only for the test conditions listed.
= TJ = 25°C.
A
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
T
MAX and TMIN
, divided by T
MAX
- T
. The measured temperatures are -40°C, 25°C and 85°C.
MIN
TYPICAL APPLICATIONS
1.2V Reference 5.0V Reference Precision 10V Reference
9V
+
AMS3100
-
R1
500k
1.2V
FB
AMS3100
9V
OUT
R1
50k
+
FB
-
R2
120k
R3
364k
⎞
⎛
R3
⎟
⎜
1.24 V
+= 1
⎟
⎜
R2
⎠
⎝
5V
15V
R1
5k
+
AMS3100
-
R2
301k
1%
FB
R3
68.1k
1%
V
10V
OUT
Ω
mV
mV
µA
µA
µV
rms
µV
rms
ppm/°C
Advanced Monolithic Systems, Inc.
http://www.BDTIC.com/AMS
TYPICAL APPLICATIONS (Continued)
Low AC Noise Reference Current Source
15V
R1
100k
+
AMS3100
-
R4
33
0.47µF
R2
120k
FB
C1
R3
Ω
360k
25V Low Current Shunt Regulator 200mA Shunt Regulator
V+
V
OUT
10V
C2
+
10µF
AMS3100
R2
120k
V+
+
-
FB
2N3964
1
µ
A< I < 100 mA
OUT =
I
AMS3100
+15V
R1
2N2905
1.24V
R1
R3
100 µA< I < 5 mA
+
AMS3100
-
2N5115
Voltage Level Detector Voltage Level Detector
+
-5V
FB
-
λ
R3
200
AMS3100
D1
Advanced Monolithic Systems, Inc.
FB
R1
120k
R2
1M
< -12V
LED ON
R1
120k
R2
2.4M
V
25V
OUT
R4
2N2219
D1
λ
50 µA< I < 200 mA
+
AMS3100
-
R3
1k
AMS3100
-5V
R1
120k
FB
R2
120k
FB
R1
120k
R2
1M
> -12V
LED ON
+
-
R3
330
V
2.5V
OUT
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TYPICAL APPLICATIONS (Continued)
Bidirectional Clamp
I
+
D1
1N457
FB
AMS3100
± 2.4V
V
IN
R1
R2
510k
FB
R3
510k
-
AMS3100
+
D2
1N457
Bidirectional Adjustable Clamp
± 1.8V to ± 2.4V
I
V
OUT
R3
+
510k
AMS3100
D1
1N457
FB
TYPICAL PERFORMANCE CHARACTERISTICS
AMS3100 Typical Temperature Coefficient
AMS3100
Bidirectional Adjustable Clamp
V
IN
R1
V
OUT
R2
510k
R4
390k
FB
-
AMS3100
+
D2
1N457
+
AMS3100
-
D1
1N457
± 2.4V to ± 6V
V
IN
R1
I
R2
330k
FB
R3
1M
FB
R4
330k
-
AMS3100
+
D2
1N457
V
OUT
0
∆
Y
∆
T
-5
-10
REFERENCE VOLTAGE CHANGE (mV)
-50 -25
0 255075 100
80-40
TEMPERATURE (° C)
Advanced Monolithic Systems, Inc.
125
Y
∆
TEMPCO
=
T
∆
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TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Reverse Characteristics
10
Reverse Characteristi cs Forward Characteristics
100
AMS3100
1.2
8
6
4
2
0
OUTPUT VOLTAGE CHANGE (mV)
-2
0.01
Temperature Drift of 3
Representative Units
1.270
1.260
1.250
1.240
REFERENCE VOLTAGE (V)
1.230
-55
-35 -15
TA =85° C
TA =25° C
TA =-40° C
0.1 1 10 100
REVERSE CURRENT (mA)
IR= 100µA
5 25456585105
TEMPERATURE (° C)
125
10
1
REVERSE CURRENT (µA)
0.1
0
Feedback Current
25
IR= 100µA
20
15
10
5
FEEDBACK CURRENT (nA)
0
-50 -25
TA =85° C
TA =25° C
0.2
0.4 0.6
0.8 1.0 1.2
REVERSE VOLTAGE (V)
V
= V
OUT
REF
V
= 5.3V
OUT
0 2550 75100125
TEMPERATURE (° C)
TA =-40° C
1.4
0.8
TA =25° C
0.4
FORWARD VOLTAGE (V)
0
0.01
0.1 1 10
Minimum Operating Current
80
70
60
50
40
30
20
MINIMUM CURRENT (µA)
10
0
1
234
OUTPUT VOLTAGE (V)
TA =-40° C
TA =85° C
AMS3100
WORST
CASE
TYP @ 25° C
5
Dynamic Output Impedance
100
V
= V
OUT
∆IR= 0.1I
TA =25° C
R
REF
10
V
= 5.3V
OUT
1
OUTPUT IMPEDANCE (Ω)
0.1
10
100 1k 10k 100k
FREQUENCY (Hz)
Advanced Monolithic Systems, Inc.
10,000
1,000
100
NOISE (nV/√Hz)
Output Noise Voltage
IR= 100µAIR= 100µA
10
10
100 1k 10k 100k
FREQUENCY (Hz)
Response Time
6
5
10
OUTPUT
4
3
2
1
INPUT
AMS3100
50k
OUTPUT
120k
364k
0
INPUT
V
= 5.3V
OUT
V
= V
OUT
REF
VOLTAGE (V)
0
050100 200
150
TIME (µs)
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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)
AMS3100
0.018-0.024
(0.457-0.610)
0.035-0.041
(0.089-1.041)
0.0005-0.0040
(0.013-0.102)
0.070-0.080
(1.778-2.032)
10°
NOM
10°
NOM
0.018-0.024
(0.457-0.610)
0.0034-0.0050
(0.086-0.127)
(SOT-23 ) AMS DRW# 051991
Advanced Monolithic Systems, Inc.
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