The AMSREF-02 is a precision voltage reference, which provides a stable +5V, which can be adjusted over a
±
6% range
with minimal effect on temperature stability. Careful design of this device improved its bandgap and as a result excellent
temperature stability is achieved. The operating supply range is 7V to 40V with a typical current drain of 650µA.
Low cost, low noise and low power makes the AMSREF-02 an excellent choice whenever a stable voltage reference is
required. Applications include D/A and A/D converters, portable instrumentation and digital voltmeters. The versatility of
AMSREF-02 is enhanced by its use as a monolithic temperature transducer.
The AMSREF-02 is operational in the full industrial temperature range of -40°C to 85°C and is available in the 8 lead SOIC
and plastic dip (PDIP) packages.
ORDERING INFORMATION
:
TOL.
PACKAGE TYPE
8 LEAD PDIP
AMSREF-02EP
AMSREF-02HP
AMSREF-02CP
8 LEAD SOIC
±15mV
AMSREF-02ES
±25mV
AMSREF-02HS
±50mV
AMSREF-02CS
OPERATING
TEMPERATURE RANGE
-40 to 85° C
-40 to 85° C
-40 to 85° C
PIN CONNECTIONS
8L SOIC/ 8L PDIP
N/C 1
V
IN
2
8 N/C
7 N/C
6 V
OUT
5 TRIM
TEMP 3
GND 4
Top View
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSREF-02
ABSOLUTE MAXIMUM RATINGS
(Note1)
Input Voltage
Output Short Circuit Duration
(to Ground or V
IN
)
Operating Temperature Range
Junction Temperature
40V
Indefinite
-40°C to 85°C
-65°C to +150°C
Storage temperature
Soldering information (60 sec)
Thermal Resistance
8 L SOIC
8 L PDIP
-65°C to +125°C
300°C
160°C/W
110°C/W
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at V
IN
=+15V and T
A
= +25°C unless otherwise specified.
Parameter
Conditions
AMSREF-02E
AMSREF-02 H
Min
Typ
Max
Min
Typ
Max
Output Voltage
Output Adjustment
Range
Output Voltage Noise
Line Regulation
(Note 5)
Load Regulation
(Note 5)
Turn-on Setting Time
Quiescent Supply
Current
Load Current
Sink Current
Short Circuit Current
Temperature Voltage
Output
(Note 6)
V
O
= 0
(Note 7)
I
L
= 0
R
P
=10kΩ
0.1Hz to 10Hz
V
IN
= 8V to 33V
I
L
= 0 to 10 mA,
T
O
±
0.1% of final
value
No Load
10
-5
4.985
±
3.0
5.000
±
6.0
10
0.006
0.005
5
0.65
21
-10
30
630
1.0
10
-5
15
0.010
0.010
5.015
4.975
±
3.0
5.000
±
6.0
10
0.006
0.006
5
0.65
21
-10
30
630
1.0
8
-5
15
0.010
0.010
5.025
AMSREF-02 C
Min
Typ
Max
4.950
±
2.7
5.000
±
6.0
12
0.009
0.006
5
0.65
21
-10
30
630
1.0
18
0.015
0.015
5.050
Units
V
%
µV
P-P
%V
% mA
µs
mA
mA
mA
mA
mV
Electrical Characteristics at V
IN
= 15, I
L
= 0mA, and -40°C
≤
T
A
≤
+85°C unless otherwise specified.
Parameter
Conditions
AMSREF-02E
AMSREF-02 H
AMSREF-02 C
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Output Voltage
Change with Temp.
Output Voltage Temp.
Coefficient
Change in V
O
Temp.
Coefficient with
Output Adjustment
Line Regulation
(Note 5)
Load Regulation
(Note 5)
Temperature Voltage
Output Temperature
Coefficient
(Notes 2,3)
(Note 4)
R
L
= 10kΩ
0.02
3
0.7
0.06
8.5
0.07
10
0.7
0.17
25
0.14
20
0.7
0.45
65
ELECTRICAL CHARACTERISTICS
Units
%
ppm/°C
ppm/°C
V
IN
= 8V to 33V
I
L
= 0 to 8 mA,
(Note 7)
0.007
0.006
2.1
0.012
0.010
0.007
0.007
2.1
0.012
0.012
0.011
0.008
2.1
0.018
0.018
%V
% mA
mV/°C
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.
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSREF-02
Note 2:
The output voltage change with temperature (∆V
OT
) is defined as the absolute difference between the maximum output voltage and the minimum output
voltage over the specified temperature range expressed as a percentage of 5V:
∆V
OT
=
[(V
MAX
-V
MIN
)/ 5V] x 100
Note 3:
∆V
OT
specification applies trimmed to +5.000V or untrimmed
Note 4:
TCV
O
is defined as
∆V
OT
divided by the temperature range: TCV
O
(-40°C to +85°C)=
[∆V
OT
(-40°C to +85°C)] / 125°C
Note 5:
Line and Load Regulation specifications include the effect of self heating.
Note 6:
During sink current test, the device meets the output voltage specified.
Note 7:
Limit current in or out of pin 3 to 50nA and capacitance on pin 3 to 30pF.
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Load Current vs
Input Voltage
MAXIMUM LOAD CURRENT (mA)
SHORT CIRCUIT PROTECTION
Normalized Load Regulation (∆I
L
= 10mA)
∆
vs Temperature
LOAD REG (T)/ LOAD REG (25° C)
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
V
IN
= 15V
Normalized Line Regulation vs
Temperature
1.4
LINE REG (T)/ LINE REG (25° C)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (° C)
Quiescent Current vs
Temperature
1.3
QUIESCENT CURRENT (mA)
1.2
1.1
1.0
0.9
0.8
V
IN
= 15V
35
30
25
20
15
10
5
500mW MAXIMUM
DISSIPATION
T
A
= 25° C
0
0
15
20
25
INPUT VOLTAGE (V)
30
0.6
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (° C)
Maximum Load Current vs
Temperature
Line Regulation vs Supply Voltage
MAXIMUM LOAD CURRENT (mA)
0.03
30
25
20
15
10
5
LINE REGULATION (%/V)
0.02
0.01
T
A
= 25° C
V
IN
= 15V
5
10
15
20
25
INPUT VOLTAGE (V)
30
0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (° C)
0.7
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (° C)
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSREF-02
OUTPUT ADJUSTMENT
The REF-02 trim terminal can be used to adjust the 5 Volt output
voltage
±
300mV. This feature allows the system designer to trim
system errors by setting the reference to a voltage other than 5V.
The system can also be set exactly 5.000V, or to 5.12V for binary
applications.
Adjustment of the output does not significantly affect the
temperature performance of the device. The temperature
coefficient change is approximately 0.7ppm/°C for 100mV of
output adjustment.
+15V
2
V
IN
V
O
REF-02
3
TEMP
TRIM
5
10kΩ
6
OUTPUT
GND
4
TYPICAL APPLICATIONS
±
5V Reference
+15V
2
V
IN
V
O
REF-02
3
TRIM
GND
4
-
5kΩ
OP-02
+
-15V
-5V
5
6
10kΩ
10kΩ
+15V
+5V
0.1
µF
Supply Bypassing
For best results, it is recommended that the power supply pin is bypassed with a
0.1µF disk ceramic capacitor.
Current Source
+15V
I
OUT
2
V
O
REF-02
3
TRIM
GND
4
5
R
6
V
IN
V
O
REF-02
3
TRIM
GND
4
5
6
Current Sink
VOLTAGE COMPLIANCE: -25V TO +8V
2
V
IN
VOLTAGE COMPLIANCE: -8V TO +25V
I
OUT
= (5.0V/R)+1mA
I
OUT
= (5.0V/R)+1mA
R
I
OUT
-15V
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMSREF-02
TYPICAL APPLICATIONS
(Continued)
Precision Temperature Transducer with Remote Sensor
+15V
2
V
IN
V
O
REF-02
TRIM 5
TEMP
3
GND
4
*
R
BP
RS
1.5k, ±5%
R
P
50kΩ
R
B1
3
+
2
-
7
OP-02
4
6
V
OUT
6
V
REF
R
A
R
C
0.1
µF
* UP TO 10 " OF SHIELDED
4-CONDUCTOR CABLE
-15V
RESISTOR VALUES
TCV
OUT
SLOPE(S)
TEMPERATURE RANGE
OUTPUT VOLTAGE RANGE
ZERO SCALE
R
A
(± 1% resistor)
R
B1
(± 1% resistor)
R
BP
(Potentiometer)
R
C
(± 1% resistor)
10mV/°C
-40°C to +85°C
-0.40V to +0.85V
0V @ 0°C
9.09kΩ
1.5kΩ
200kΩ
5.11kΩ
100mV/°C
-40°C to +85°C
-0.40V to +0.85V
0V @ 0°C
15kΩ
1.82kΩ
500kΩ
84.5kΩ
TEMP. VOLTAGE OUTPUT (mV)
Typical Temperature Voltage Output vs
Temperature
880
830
780
730
680
630
580
530
480
430
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (° C)
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
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