Advanced Monolithic Systems AMS04 Service Manual
http://www.BDTIC.com/AMS
Advanced AMS04/AMS05
Monolithic VOLTAGE REFERENCES
Systems
FEATURES APPLICATIONS
•• Low Temperature Coefficient •• Battery Powered Systems
•• Wide Operating Current Range •• Instrumentation
AMS04…………………….15µµA to 20mA •• A/D, D/A Converters
AMS05…………………….20µµA to 20mA •• Current sources
•• Max. 1ΩΩ Dynamic Impedance •• Power Supplies
•• Typ. 2% Output tolerance •• Telecommunication
GENERAL DESCRIPTION
The AMS04 and the AMS05 are two-terminal, band-gap voltage reference diodes, with an output voltage of 1.25V for the
AMS04 and 2.5V for the AMS05. These devices feature low dynamic impedance and good temperature coefficient, operating
over a wide current range. Since the band-gap reference of these devices uses only transistors and resistors, low noise and
good long term stability result. The wide dynamic operating range allows its use with widely varying supplies with excellent
regulation. The AMS04 and AMS05 can be used for portable meters, regulators, data acquisition converters and
telecommunication.
The AMS04 and AMS05 are operational over a temperature range of 0°C to 70°C and are available in TO-92 and SO-8
packages.
ORDERING INFORMATION:
MAX. PACKAGE TYPE OPERATING
TEMPCO
50ppm/°C
100ppm/°C
50ppm/°C
100ppm/°C
PIN CONNECTIONS
AMS04AN AMS04AS
AMS04BN AMS04BS
AMS05AN AMS05AS
AMS05BN AMS05BS
TO-92 8 LEAD SOIC
TO-92 SO-8
Plastic Package (N) SO Package (S)
TEMPERATURE RANGE
0 to 70°C
0 to 70°C
0 to 70°C
0 to 70°C
Advanced Monolithic Systems, Inc.
+ -
12
Bottom View
N/C N/CN/C
8437 56
1 2
N/C N/C N/C
Top View
+
-
http://www.BDTIC.com/AMS
AMS04/AMS05
ABSOLUTE MAXIMUM RATINGS
Reverse Current 30mA Soldering information
Forward Current 10mA TO-92 package: 10 sec.
Operating Temperature Range
Storage temperature
0°C to 70°C
-55°C to +150°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 100 µA, and TA = +25°C unless otherwise specified.
Parameter
Conditions
SOIC package: Vapor phase (60 sec)
Infrared (15 sec.)
AMS04
Min Typ Max
Min Typ Max
AMS05
260°C
215°C
220°C
Units
Reverse Breakdown
Voltage
Reverse Dynamic
Impedance
Reverse Breakdown
Voltage Change
Min. Operating Current
Wide Band Noise
Temperature Coeff.
AMS04A/AMS05A
AMS04B/AMS05B
IR = 100 µA
IR = 100 µA
15µA ≤IR ≤20mA
20µA ≤IR ≤1mA
20µA ≤IR ≤20mA
25µA ≤IR ≤1mA
10Hz ≤ f ≤ 10kHz
IR = 100 µA (Note 3)
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, T
Thermal Resistance TO-92 SO-8
ϕ
(junction to ambient)
JA
Note 3: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between the operating T
T
, divided by T
MIN
MAX
- T
. The measured temperatures are 0°C, 25°C and 70°C.
MIN
TYPICAL APPLICATIONS
Precision Current Source
AMS04
+15V
81kΩ
2
-
LM312
3
+
I
*
OUT
1.25V
OUT
I * =
SET
R
Advanced Monolithic Systems, Inc.
1.235
1 1
10 20
60 60
max is +100°C
J
1.250
10
0.25
170°C/W (0.125” leads) 165°C/W
Battery Powered 1.25V Reference 10V Reference
9V
1µF
7
6
4
R
SET
360kΩ
AMS04
10
1.2V
1.265
20
1.0
50
100
2.475
AMS05
50k
3
2
60kΩ
2.50
0.25
+
-
+15V
7
4
2.525
2.0
1.0
50
100
6
180kΩ
0.1µF
ppm/°C
MAX and
V
= 10VLM312
OUT
V
Ω
mV
mV
µA
µV
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