ADMOS AMS1004-1.2AN Micropower voltage reference Datasheet

Advanced
Monolithic
Systems
AMS1004-1.2
MICROPOWER VOLTAGE REFERENCE
FEATURES
APPLICATIONS
• ±4 mV (±0.3%) max. initial tolerance (A grade)
• Operating Current 10µ
µ A to 20mA
• Low Voltage Reference 1.235V
• Max. 0.6Ω
Ω Dynamic Impedance (A grade)
• Low Temperature Coefficient
• 2.5V Device also available, AMS1004-2.5
• Battery Powered Systems
• Instrumentation
• A/D, D/A Converters
• Temperature measurement
• Current sources
• Notebook/Personal Computer
• Monitors/ VCR/ TV
• Pagers
GENERAL DESCRIPTION
The AMS1004-1.2 is a two-terminal micropower band-gap voltage reference diode. It features a very low dynamic impedance
and good temperature coefficient, operating over a 10µA to 20mA current range. On-chip trimming is used to provide tight
voltage tolerance. Since the AMS1004-1.2 is a band-gap reference, uses only transistors and resistors, low noise and good
long term stability result. Careful design of the AMS1004-1.2 has made the device 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 of the AMS1004-1.2 makes these reference
diodes useful for micropower circuitry. This voltage reference 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, making it attractive
for use in systems where accuracy was previously obtained at the expense of power consumption and trimming.
The AMS1004-1.2 is operational over a temperature range of 0°C to 70°C and is available in TO-92, SO-8 and SOT-89
packages. For extended temperature range contact factory.
ORDERING INFORMATION:
TOL.
TO-92
±4mV AMS1004-1.2AN
±15mV AMS1004-1.2BN
PACKAGE TYPE
8 LEAD SOIC
AMS1004-1.2AS
AMS1004-1.2BS
Advanced Monolithic Systems, Inc.
OPERATING
SOT-89
AMS1004-1.2AL
AMS1004-1.2BL
TEMPERATURE RANGE
0 to 70° C
0 to 70° C
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS1004-1.2
ABSOLUTE MAXIMUM RATINGS
Reverse Current
Forward Current
Operating Temperature Range
30mA
10mA
0°C to 70°C
Storage temperature
Soldering information
TO-92 package: 10 sec.
SOIC package: Vapor phase (60 sec)
Infrared (15 sec.)
SOT-89 package: 10 sec.
-55°C to +150°C
260°C
215°C
220°C
265°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 100 µA, and TA = +25°C unless otherwise specified.
Parameter
Reverse Breakdown
Voltage (Note 4)
Reverse Dynamic
Impedance (Note 4)
Reverse Breakdown
Voltage Change with
current (Note 4)
Conditions
Min
1.231
1.235
1.239
IR - 100 µA, f = 20Hz
0.2
0.60
10µA ≤IR ≤1mA
1mA ≤IR ≤20mA
1.0
10
8
IR - 100 µA,
10Hz ≤ f ≤ 10kHz
Temperature Coeff.
(Note 6)
Long Term Stability
(Note 5)
Min
1.220
AMS1004B-1.2
Typ
Max
1.235
1.250
Units
V
IR - 100 µA
Min. Operating
Current (Note 4)
Wide Band Noise
(Note 5)
AMS1004A-1.2
Typ
Max
TA=25°C±.1°C
T = 1000 Hr
10
20
Ω
1
8
1.0
10
mV
10
20
µA
µA
60
60
µV
25
50
ppm/°C
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: For elevated temperature operation, Tj max is +100°C
Thermal Resistance
ϕ JA (junction to ambient)
TO-92
170°C/W (0.125” leads)
SO-8
SOT-89
165°C/W
160°C/W
Note 3: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 25°C.
Note 4: Guaranteed and 100% production tested.
Note 5: Guaranteed but not 100% production tested. These limits are not used to calculate average outgoing quality levels.
Note 6: 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, 70°C.
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS1004-1.2
PIN CONNECTIONS
TO-92
Plastic Package (N)
3
2
SO-8
SO Package (S)
N/C N/C N/C
7
6
5
+
8
1
1
2
3
N/C N/C N/C
Bottom View
SOT-89
(L)
4
-
3
2
1
N/C
+
-
Top View
Top View
Micropower Reference
from 9V Battery
Reference from
1.5V Battery
TYPICAL APPLICATIONS
Wide Input
Range Reference
9V
VIN = 2.3V TO 30V
1.5V
500k
3k
LM334
1.2V
1.2V
4.3k
AMS1004-1.2
AMS1004-1.2
OUT
1.24V
AMS1004-1.2
Micropower Thermocouple Cold Junction Compensator
V+
5.1k
LM334
1M
1%
R
VMERCURY
+
CELL
1.345V
ZERO ADJ
100k
AMS1004-1.2
R2
2k
1%
Adjustment Procedure
TC ADJ
500
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
+
METER
COLD JUNCTION
ISO THERMAL
WITH LM334
Advanced Monolithic Systems, Inc.
J
T
K
S
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
412
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
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS1004-1.2
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
R1
4k
IOUT
R2
1k
V+
LM334
LM334
R
R1
2k
IOUT
AMS1004-1.2
R2
1k
V+
1.5V
(1.3-1.6V)†
R
LM334
AMS1004-1.2
V-
M
0-50µA
8k TO
12k†
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
AMS1004-1.2
R4
100
Calibration
Calibration
1. Short AMS1004-1.2, 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 AMS1004-1.2, 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
V1.5V†
V1
R
2.3k
V2
90k
25k
1M
OUTPUT
1mV/° C
2
7
+
6
LM4250C
3
1.2k
27k
4
AMS1004-1.2
10V
8
22M
150pF
R1
1k
3.5M
500k
AMS1004-1.2
*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.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS1004-1.2
TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Characteristics
TA =125° C
6
4
TA =25° C
2
TA =-55° C
0
10
T A =125° C
TA =-55° C
1
TA =25° C
0.1
-2
0.1
1
10
REVERSE CURRENT (mA)
TA =25° C
TA =-55° C
Reverse Dynamic Impedance
1.250
1.240
1.230
1.220
10
100
10k
100k
1k
FREQUENCY (Hz)
1M
IR= 100 µA
1.5
30
20
SHARP CUTOFF
FILTER
VOLTAGE SWING (V)
NOISE (nV/√Hz)
100µA
40
0
100
1
2.0
600
SINGLE POLE LOW PASS
OUTPUT
10
10
Response Time
700
IR= 100 µA
50
100
Noise Voltage
Filtered Output Noise
70
60
T A =25° C
I R= 100 µA
1k
0.1
-55 -35 -15 5 25 45 65 85 105 125
TEMPERATURE (° C)
100
0.1
1
10
100
FORWARD CURRENT (mA)
10k
I R= 100 µA
0.1
0.1
1
10
REVERSE CURRENT (mA)
TA =125° C
0.01
DYNAMIC IMPEDANCE (Ω)
REFERENCE VOLTAGE (V)
TA =125° C
0.01
T A =25° C
0.4
0.2 0.4 0.6 0.8 1.0 1.2 1.4
REVERSE VOLTAGE (V)
1.260
1
0.8
Temperature Drift of 3
Representative Units
100
10
TA =-55° C
0
0
100
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
500
400
300
200
100k
0.5
0
OUTPUT
~
~
~
~
10
INPUT
100
0
1k
10k
100k
CUTOFF FREQUENCY (Hz)
Advanced Monolithic Systems, Inc.
OUTPUT
INPUT
1.0
0
10
100
1k
10k
FREQUENCY (Hz)
100k
0
200
400
TIME (µs)
600
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS1004-1.2
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
3 LEAD TO-92 PLASTIC PACKAGE (N)
0.180±0.005
(4.572±0.127)
0.060±0.005
(1.524±0.127)
DIA
0.060±0.010
(1.524±0.254)
0.90
(2.286)
NOM
0.180±0.005
(4.572±0.127)
0.140±0.010
(3.556±0.127)
5° NOM
0.500
(12.70)
MIN
0.050
(1.270)
MAX
UNCONTROLLED
LEAD DIMENSIONS
0.015±0.002
(0.381±0.051)
0.016±0.003
(0.406±0.076)
0.050±0.005
(1.270±0.127)
10°
NOM
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
0.010-0.020
x 45°
(0.254-0.508)
0.053-0.069
(1.346-1.752)
0.004-0.010
(0.101-0.254)
0.014-0.019
(0.355-0.483)
0.008-0.010
(0.203-0.254)
0.050
(1.270)
TYP
0°-8° 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.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS1004-1.2
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).
SOT-89 PLASTIC PACKAGE (L)
0.173-0.181
(4.40-4.60)
0.055-0.063
(1.40-1.60)
0.014-0.017
(0.35-0.44)
0.064-0.072
(1.62-1.83)
0.155-0.167
(3.94-4.25)
0.084-0.090
(2.13-2.29)
0.090-0.102
(2.29-2.60)
0.035-0.047
(0.89-1.20)
0.059
(1.50)
BSC
0.014-0.019
(0.36-0.48)
0.017-0.022
(0.44-0.56)
L (SOT-89 ) AMS DRW# 042392
0.118
(3.00)
BSC
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140