ADMOS AMS3100-1.2CM Battery powered system Datasheet

Advanced
Monolithic
Systems
AMS3100-1.2
MICROPOWER VOLTAGE REFERENCE
FEATURES
APPLICATIONS
• ±6 mV (±0.5%) max. initial tolerance (A grade)
• Operating Current 10µ
µ A to 20mA
• Low Voltage Reference 1.240
• Max. 0.5Ω
Ω Dynamic Impedance (A grade)
• Low Temperature Coefficient
• SOT-23 Package Available
• Low cost
• Battery Powered Systems
• Instrumentation
• A/D, D/A Converters
• Temperature measurement
• Current sources
• Notebook/Personal Computer
• Monitors/ VCR/ TV
• Pagers
GENERAL DESCRIPTION
The AMS3100-1.2 are two-terminal micropower band-gap voltage reference that feature a very low dynamic impedance and
good temperature coefficient, operating over a 10µA to 20mA current range. AMS3100-1.2 is trimmed at wafer test level to
optimize the temperature coefficient and tight output voltage tolerance. The advanced process technology used, makes the
AMS3100-1.2 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 AMS3100-1.2 offers the advantage of long term stability at low cost.
The AMS3100-1.2 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
SOT-23
±6mV AMS3100-1.2AM
±12mV AMS3100-1.2BM
±25mV AMS3100-1.2CM
OPERATING
TEMPERATURE RANGE
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
PIN CONNECTIONS
3L SOT-23
(M)
3 *
1
+
2
-
*This pin must be left floating or
connected to pin 2
Top View
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100-1.2
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current
Forward Current
Operating Temperature Range
Storage temperature
30mA
10mA
-40°C to 85°C
-55°C to +150°C
Lead Temperature
Vapor phase (60 sec)
Infrared (15 sec.)
Thermal Resistance (θJA)
215°C
220°C
410°C/W
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 100 µA, and TA = +25°C unless otherwise specified.
Parameter
Conditions
Reverse Breakdown
Voltage (Note 3)
Min
AMS3100A-1.2
Typ
Max
1.229
1.235
1.241
IR - 100 µA, f =20Hz
0.2
0.50
10µA ≤IR ≤1mA
1mA ≤IR ≤20mA
1.0
5
Min. Operating
Current (Note 3)
1.223
1.235
1.249
AMS3100C-1.2
Min
Typ
Max
1.210
1.235
IR - 100 µA,
10Hz ≤ f ≤ 10kHz
Temperature Coeff.
(Note 5)
10
15
60
1.260
Units
V
5
50
20
40
Ω
0.5
10
15
5
60
25
TA=25°C±.1°C
T = 1000 Hr
0.5
1.0
5
5
Long Term Stability
(Note 4)
AMS3100B-1.2
Typ
Max
IR - 100 µA
Reverse Dynamic
Impedance (Note 4)
Reverse Breakdown
Voltage Change with
current (Note 3)
Wide Band Noise
(Note 4)
Min
100
20
1.0
5
mV
10
15
µA
µA
60
µV
75
ppm/°C
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 = 25°C.
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 0°C, 25°C, 85°C.
TYPICAL APPLICATIONS
Wide Input
Range Reference
Micropower Reference
from 9V Battery
9V
V IN = 2.3V TO 30V
Reference from
1.5V Battery
1.5V
500k
3k
LM334
1.2V
1.2V
AMS3100-1.2
AMS3100-1.2
4.3k
OUT
1.24V
AMS3100-1.2
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100-1.2
TYPICAL APPLICATIONS (Continued)
0°°C - 100°°C Thermometer
0°°C - 100°°C Thermometer
Lower Power Thermometer
*
150
150
M
1.3 TO
1.6V‡
0-100µA M
IOUT
0-50µA M
8k TO
12k†
R1
4k
AMS3100-1.2
R2
1k
V+
LM334
R
R2
1k
V+
1.5V
(1.3-1.6V)†
R
LM334
AMS3100-1.2
V-
R1
2k
IOUT
LM334
V-
R3
100
R3
50
* 2N3638 or 2N2907 select for inverse HFE ≅ 5
† Select for operation at 1.3V
‡ IQ ≅ 600µA to 900 µA
R4
220
1.3-1.6V
AMS3100-1.2
R4
100
Calibration
Calibration
1. Short AMS3100-1.2, adjust R3 for IOUT = temp at
1µA/°K
2. Remove short, adjust R2 for correct reading in °C
† IQ at 1.3V ≅ 500 µA
IQ at 1.6V ≅ 2.4mA
1. Short AMS3100-1.2, adjust R3 for IOUT = temp at
1.8µA/°K
2. Remove short, adjust R2 for correct reading in °F
Centigrade Thermometer
Micropower* 10V Reference
IQ
VIN = 15V
2.2k
V+
LM334
R
V1.5V†
V1
V2
90k
25k
1M
OUTPUT
1mV/° C
2.3k
2
7
+
6
LM4250C
3
1.2k
27k
4
22M
AMS3100-1.2
R1
1k
10V
8
150pF
3.5M
AMS3100-1.2
500k
*IQ ≅ 20µA standby current
Calibration
1. Adjust R1 so that V1 = temp at 1mV/°K.
2. Adjust V2 to 273.2mV.
† IQ for 1.3V to 1.6V battery voltage = 50µA to 150µA
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100-1.2
TYPICAL APPLICATIONS (Continued)
Micropower Thermocouple Cold Junction Compensator
V+
LM334
2k
1%
5.1k
1M
1%
R
Adjustment Procedure
VMERCURY
+
CELL
1.345V
TC ADJ
500
ZERO
ADJ 100k
AMS3100-1.2
R2
1. Adjust TC ADJ pot until voltage across R1 equals Kelvin temperature
multiplied by the thermocouple Seebeck coefficient.
2. Adjust ZERO ADJ pot until voltage across R2 equals the thermocouple
Seebeck coefficient multiplied by 273.2.
R1
Thermocouple
Type
+
THERMOCOUPLE
+
J
T
K
S
METER
COLD JUNCTION
ISO THERMAL
WITH LM334
Seebeck
Coefficient
(mV/ ° C)
R1
(Ω
Ω)
R2
Voltage
Voltage
(Ω
Ω ) Across R1
Across R2
@ 25°°C (mV)
(mV)
52.3
42.8
40.8
6.4
523
432
408
63.4
1.24k
1k
953Ω
150Ω
15.60
12.77
12.17
1.908
14.32
11.78
11.17
1.766
Typical supply current 50µA
Precision 1µ
µ A to 1mA Current Sources
AMS3100-1.2
30V
AMS3100-1.2
C1
150pF
R1
100k
R1
100k
2
-
2
-
+
7
6
LM312
7
6
LM312
3
C1
150pF
3
+
4
4
IOUT*
IOUT*
R2
1.5V TO 27V
R2
-1.5V TO -27V
-30V
*IOUT =1.23V/R2
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS3100-1.2
TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Characteristics
6
T A =70° C
4
T A =25° C
2
0
10
T A =70° C
1
T A =25° C
0.1
-2
0.2 0.4 0.6 0.8 1.0 1.2 1.4
REVERSE VOLTAGE (V)
Reverse Dynamic Impedance
IR= 100 µA
1.250
1.240
1.230
1.220
0.1
0.01
30
AMS3100-1.2
20
10
0
100
SHARP CUTOFF
FILTER
NOISE (nV/√Hz)
40
VOLTAGE SWING (V)
600
SINGLE POLE LOW PASS
OUTPUT
500
400
300
200
Advanced Monolithic Systems, Inc.
100
10k
100k
1k
FREQUENCY (Hz)
1M
1.5
OUTPUT
INPUT
1.0
100k
0.5
0
OUTPUT
~
~
~
~
10
INPUT
100
0
1k
10k
100k
CUTOFF FREQUENCY (Hz)
1
Response Time
I R= 100 µA
I R= 100 µA
100µA
10
2.0
700
50
100
Noise Voltage
Filtered Output Noise
70
60
T A =25° C
IR= 100 µA
1k
0.1
10
-55 -35 -15 5 25 45 65 85 105 125
TEMPERATURE (° C)
0.1
1
10
100
REVERSE CURRENT (mA)
0.1
1
10
100
FORWARD CURRENT (mA)
10k
DYNAMIC IMPEDANCE (Ω)
T A =25° C
REFERENCE VOLTAGE (V)
1
T A =70° C
0.01
1.260
T A =70° C
T A =25° C
0.4
Temperature Drift of 3
Representative Units
100
10
0.8
0
0
0.1
1
10
100
REVERSE CURRENT (mA)
Reverse Dynamic Impedance
DYNAMIC IMPEDANCE (Ω)
1.2
FORWARD VOLTAGE (V)
8
0.01
INTEGRATED NOISE (µV)
Forward Characteristics
100
REVERSE CURRENT (µA)
OUTPUT VOLTAGE CHANGE (mV)
Reverse Characteristics
10
0
10
100
1k
10k
FREQUENCY (Hz)
www.advanced-monolithic.com
100k
0
Phone (925) 443-0722
200
400
TIME (µs)
600
Fax (925) 443-0723
AMS3100-1.2
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