•• Adjustment Range …………………………… ±± 3% Min•• Portable Instrumentation
•• Excellent Temperature Stability…………… 8.5ppm/°°C•• Digital Voltmeters
•• Low Noise ………………………………….. 30µµV
•• Low Supply Current ………………………. 650µµA Typ
•• Wide Input Voltage Range …………………. 12V to 40V
•• High Load-Driving Capability……………………. 20mA
•• No External Components
•• Short -Circuit Proof
GENERAL DESCRIPTION
The AMSREF-01 is a precision voltage reference, which provides a stable +10V output, which can be adjusted over a ± 3%
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 12V to 40V with a typical current drain of 650µA.
Low cost, low noise and low power makes the AMSREF-01 an excellent choice whenever a stable voltage reference is
required. Applications include D/A and A/D converters, portable instrumentation and digital voltmeters.
Max•• Current sources
P-P
The AMSREF-01 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 TYPEOPERATING
8 LEAD SOIC8 LEAD PDIP
±30mV AMSREF-01ES AMSREF-01EP
±50mV AMSREF-01HS AMSREF-01HP
±100mV AMSREF-01CS AMSREF-01CP
TEMPERATURE RANGE
-40 to 85° C
-40 to 85° C
-40 to 85° C
PIN CONNECTIONS
8L SOIC/ 8L PDIP
N/C
V
N/C
GND
1
2
IN
3
4
8
7
6 V
5
N/C
N/C
OUT
TRIM
Top View
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Page 2
AMSREF-01
ABSOLUTE MAXIMUM RATINGS (Note1)
Input Voltage 40VStorage temperature
Output Short Circuit DurationSoldering information (60 sec)
(to Ground or VIN)IndefiniteThermal Resistance
Operating Temperature Range
Junction Temperature
-40°C to 85°C
-65°C to +150°C
8 L SOIC
8 L PDIP
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at VIN =+15V and TA = +25°C unless otherwise specified.
= 15, IL = 0mA, and -40°C ≤ TA ≤ +85°C unless otherwise specified.
IN
MinTypMaxMinTypMaxMinTypMax
Output Voltage Temp.
Coefficient
Change in VO Temp.
Coefficient with
Output Adjustment
Line Regulation
(Note 5)
Load Regulation
(Note 5)
(Note 4)38.510252065ppm/°C
RL = 10kΩ
VIN = 13V to 33V0.0070.0120.0070.0120.0110.018% V
IL = 0 to 8 mA,0.0060.0100.0070.0120.0080.018% mA
0.70.70.7ppm/°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
Page 3
AMSREF-01
= 10mA vs
Note 2: The output voltage change with temperature (∆V
) is defined as the absolute difference between the maximum output voltage and the minimum output
OT
voltage over the specified temperature range expressed as a percentage of 10V:
∆VOT = [(V
Note 3: ∆V
Note 4: TCV
specification applies trimmed to +10.000V or untrimmed
OT
is defined as ∆VOT divided by the temperature range: TCVO (-40°C to +85°C)= [∆V
O
MAX
-V
MIN
)/10V] x 100
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.
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Load Current vs
Input Voltage
35
SHORT CIRCUIT PROTECTION
30
25
500mW MAXIMUM
DISSIPATION
20
15
10
5
MAXIMUM LOAD CURRENT (mA)
TA = 25° C
0
0152030
25
INPUT VOLTAGE (V)
Normalized Load Regulation (∆∆IL = 10mA)
vs Temperature
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
LOAD REG (T)/ LOAD REG (25° C)
VIN = 15V
0.6
-60 -402060100
-20 04080120140
TEMPERATURE (° C)
(-40°C to +85°C)] / 125°C
OT
LINE REG (T)/ LINE REG (25° C)
Normalized Line Regulation (∆∆I
Temperature
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
-60 -402060100
-20 04080120140
TEMPERATURE (° C)
L
Maximum Load Current vs
Temperature
30
25
20
15
10
5
VIN = 15V
MAXIMUM LOAD CURRENT (mA)
0
-60 -402060100
-20 04080120140
TEMPERATURE (° C)
Quiescent Current vs
Temperature
1.3
1.2
1.1
1.0
0.9
VIN = 15V
0.8
QUIESCENT CURRENT (mA)
0.7
-60 -402060100
-20 04080120140
TEMPERATURE (° C)
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Page 4
OUTPUT ADJUSTMENT
The REF-01 trim terminal can be used to adjust the 10V output
voltage ± 300mV. This feature allows the system designer to trim
system errors by setting the reference to a voltage other than 10V.
The system can also be set exactly 10.000V, or to 10.240V 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.
TYPICAL APPLICATIONS
+15V
V
IN
REF-01
GND
2
TRIM
4
AMSREF-01
6
V
O
5
OUTPUT
10kΩ
±± 10V Reference
+15V
2
V
IN
6
V
O
REF-01
GND
0.1
µF
TRIM
4
5
5kΩ
10kΩ
10kΩ
+15V
OP-02
+
-15V
+10V
-10V
Supply Bypassing
For best results, it is recommended that the power supply pin is bypassed with a
0.1µF disk ceramic capacitor.
Current SourceCurrent Sink
+15V
2
V
IN
REF-01
GND
4
TRIM
I
OUT
VOLTAGE COMPLIANCE: -25V TO +3V
6
V
O
5
I
(10.0V/R)+1mA
OUT=
R
Precision Calibration Standard
1.1mA
0.1
µF
VOLTAGE COMPLIANCE: -3V TO +25V
6
V
O
5
V
IN
REF-01
GND
I
2
TRIM
4
-15V
9V
9V
OUT
V
REF-01
GND
R
2
IN
TRIM
4
I
OUT=
6
V
O
5
(10.0V/R)+1mA
+
10.000V
100kΩ
-
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140