Advanced Monolithic Systems AMS1009 Service Manual
http://www.BDTIC.com/AMS
Advanced AMS1009
Monolithic VOLTAGE REFERENCE DIODE
Systems
RoHS compliant
FEATURES APPLICATIONS
• ±5 mV (±0.2%) Max. Initial Tolerance (A grade) • Power Supplies
• Wide Operating Current Range • Instrumentation
• Low Voltage Reference 2.5V • 8 Bit A/D, D/A Reference
• Max. 0.6Ω Dynamic Impedance (A grade) • Current Loop Measurement and Control Systems
• Low Temperature Coefficient • Reference for 5V Systems
GENERAL DESCRIPTION
The AMS1009 is a precision band-gap voltage reference diode. This voltage reference features a very low dynamic impedance
and good temperature coefficient, operating over a wide current range of 400µA to 10mA. On-chip trimming is used to
provide tight tolerance and minimize temperature drift. A third terminal allows the reference voltage to be adju sted to ±5% to
calibrate out system errors.
The AMS1009 is used as a precision 2.5V low voltage reference for digital voltmeters, power supplies or op amp circuitry, and
the 2.5V make it easy to obtain a stable reference from 5V logic supplies.
The AMS1009 is available in TO-92 and SO-8 packages operating over a 0°C to 70°C temperature range.
ORDERING INFORMATION:
TOL. PACKAGE TYPE OPERATING
TO-92 8 LEAD SOIC
±5mV AMS1009AN AMS1009AS
±10mV AMS1009BN AMS1009BS
PIN CONNECTIONS
TO-92 8L SOIC
Plastic Package (N) SO Package (S)
123
+
TEMPERATURE RANGE
0 to 70° C
0 to 70° C
N/C ADJN/C
756
Bottom View Top View
Advanced Monolithic Systems, Inc.
12843
N/C N/C N/C
-
http://www.BDTIC.com/AMS
AMS1009
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current 20mA Soldering information (25 sec.)
Forward Current 10mA
Operating Temperature Range
Storage temperature
0°C to 70°C
-55°C to +150°C
265°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 1 mA, and TA = +25°C unless otherwise specified.
Parameter
Reverse Breakdown Voltage
Conditions
AMS1009A
Min Typ Max
2.495 2.500 2.505 2.490 2.500 2.510 V
AMS1009B
Min Typ Max
Units
Reverse Dynamic Impedance 0.2
0.4
Reverse Breakdown Voltage
Change with current
Temperature Stability
Average Temperature Coeff.
Long Term Stability (Note 4)
400µA ≤I
T
0°C ≤ T
T
T = 1000 Hr
R
≤ TA ≤ T
MIN
≤ 70°C
A
=25°C±.1°C
A
≤10mA
MAX
2.6 3 10
1.8
15
20 20 ppm
0.6
1.4
12
4
25
0.2
0.4
2.6 3 10
1.8
15
1.0
1.4
12
25
Ω
mV
4
mV
ppm/°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
Note 2: For elevated temperature operation, T
. The guaranteed specifications apply only for the test conditions listed.
max is +125°C
j
Thermal Resistance TO-92 SO-8
ϕ
(junction to ambient)
JA
170°C/W (0.125” leads) 165°C/W
Note 3: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at T
Note 4: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between the operating
and T
T
MAX
, divided by T
MIN
MAX
- T
. The measured temperatures are 0°C, 25°C and 70°C.
MIN
= TJ = 25°C.
A
TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Characteristics
-1
10
A)
µ
-2
10
-3
10
TJ =25° C
TJ =70° C
-4
10
REVERSE CURRENT (
-5
10
0.5
1.0 1.4
REVERSE VOLTAGE (V)
TJ = 0° C
1.8 2.2
2.6
Advanced Monolithic Systems, Inc.
Reverse Voltage Change
5
4
3
2
1
0
REVERSE VOLTAGE CHANGE (mV)
0
4
REVERSE CURRENT (mA)
8
12 16
Response Time
~
~
2.5
2.0
1.0
0
~
~
10
VOLTAGE SWING (V)
4
20
0
OUTPUT
INPUT
0
TIME (
~
~
5k
OUTPUT
~
~
INPUT
~
~
120
µ
s)
~
~
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