AME, Inc.
AME41-1.2
Micropower Voltage Reference Diode
!
General Description
The AME41-1.2 is a micropower 2-terminal band-gap
voltage regulator diode. It operates over a 15µA to 20mA
current range. Each circuit is trimmed at wafer sort to
provide a ±0.20% and ±0.50% initial tolerance. The de-
sign of the AME41-1.2 allows for a large range of load
capacitances and operating currents. The low start-up
current makes these part ideal for battery applications.
Analog Microelectronics offers this part in a TO-92 and
SO-8 packages as well as the space saving SOT-23.
!
Functional Block Diagram
VR
Bandgap
Cell
Feedback
Current
Shunt
!
Features
"
Small packages: SOT-23, TO-92, SO-8
"
Tolerates capacitive loads
"
Fixed reverse breakdown voltage of 1.25V
"
Tight voltage tolerance -------
±0.20%, ±0.5%
"
Wide operating current ------- 15µA to 20mA
"
Wide temperature range ----- -40
o
C to +85
o
C
"
Low temperature coefficient --100ppm/ C
(max)
"
Excellent transient response
o
GND
!
Typical Application
VS
RS
VR
VR = 1.25V
!
Applications
"
"
"
"
"
"
Portable electronics
Power supplies
Computer peripherals
Data acquisition systems
Battery chargers
Consumer electronics
0.1µF
µ
Value optional
RS =
VS - VR
I
1
AME, Inc.
AME41-1.2
Micropower Voltage Reference Diode
!
Ordering Information
Part Number
AME41DEET
Marking
ACWww
Accuracy
0.2%
Package
SOT-23
Operating Temp. Range
-40
O
C to +85
O
C
AME41DEHA
41
DEHA
yyww
0.2%
SO-8
-40
O
C to +85
O
C
AME41AEET
ACAww
0.5%
SOT-23
-40
O
C to +85
O
C
AME41AEAS
AME
41
AEAS
yyww
AME
41
AEAT
yyww
41
AEHA
yyww
0.5%
TO-92-2
-40
O
C to +85
O
C
AME41AEAT
0.5%
TO-92-3
-40
O
C to +85
O
C
AME41AEHA
0.5%
SO-8
-40
O
C to +85
O
C
Please consult AME sales office or authorized Rep./Distributor for other voltage accuracy andpackage type availabil-
ity.
3
AME, Inc.
AME41-1.2
Micropower Voltage Reference Diode
!
Absolute Maximum Ratings
Parameter
Supply Current
Maximum
50
Unit
mA
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
!
Recommended Operating Conditions
Parameter
Supply Current
Ambient Temperature Range
Junction Temperature
Rating
100
µ
A ~ 20mA
-40 to +85
-40 to +125
Unit
o
o
C
C
!
Thermal Information
Parameter
SOT-23
Thermal Resistance
TO-92
SO-8
Maximum Junction Temperature
Maximum Lead Temperature ( 10 Sec)
Maximum
325
180
124
150
300
Unit
o
C/W
o
o
C
C
4
AME, Inc.
AME41-1.2
Micropower Voltage Reference Diode
!
Electrical Specifications
Unless otherwise specified, TA = 25
C, I=100µA
Parameter
Reference Voltage,
±
0.2%
Reference Voltage,
±
0.5%
Minimum Current
Reference Voltage Change
With Current
Reference Voltage Temp.
Coeff.
Symbol
V
REF
I
MIN
dV
REF/I
V
REFTC
I
MIN
< I < 1mA
1mA < I < 20mA
0
o
C < T
A
< 70
o
C
1.5
4
Test Condition
T
A
= 25
o
C, I
REF
= 100µA
Min
Typ
Max
Units
V
V
µA
mV
ppm/
o
C
1.247 1.250 1.253
1.244 1.250 1.256
15
3
8
100
5
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