Analog Microelectronics, Inc.
AME41-ADJ
Micropower Voltage Reference Diode
n
General Description
The AME41-ADJ is a micropower 3-terminal band-gap
voltage regulator diode with a user adjustable output volt-
age. 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 design of the AME41-
ADJ 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.
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Key Features
l
Small packages: SOT-23, TO-92, SO-8
l
Tolerates capacitive loads
l
User adjustable reverse breakdown voltage
l
Tight voltage tolerance ----------
±0.20%, ±0.50%
l
Wide operating current ---------- 15µA to 20mA
l
Wide temperature range -------- -40
o
C to +85
o
C
l
Low temperature coefficient --- 100ppm/
o
C (max)
l
Excellent transient response
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Applications
l
l
l
l
l
l
Portable electronics
Power supplies
Computer peripherals
Data acquisition systems
Battery chargers
Consumer electronics
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Functional Block Diagram
VR
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Typical Application
VS
RS
A DJ
B andgap
Cell
Feedbac k
Current
S hunt
R1
VR
GND
1000pF
V alue optional
I
R2
RS =
VS - VR
I
1.27 (R1 + R2)
R1
VR =
1
Analog Microelectronics, Inc.
AME41-ADJ
Micropower Voltage Reference Diode
n
Package Outline
SOT-23 Top View
-
TO-92 Bottom View
ADJ
SO-8 Top View
NC
NC
NC
+
-
+
NC
NC
ADJ
ADJ
+
-
* The NC pin must float or be connected to - (negative)
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Ordering Information
Part Number
AME41EEET
Accuracy
0.2%
Marking
ACYww
AME
41EEHA
yyww
ACBww
AME
41
BEAT
yyww
AME
41BEHA
yyww
Package
SOT-23
Operating Temp. Range
-40
O
C to +85
O
C
AME41EEHA
0.2%
SO-8
-40
O
C to +85
O
C
AME41BEET
0.5%
SOT-23
-40
O
C to +85
O
C
AME41BEAT
0.5%
TO-92
-40
O
C to +85
O
C
AME41BEHA
0.5%
SO-8
-40
O
C to +85
O
C
Please consult AME sales office or authorized Rep./Distributor for other voltage accuracy and
package type availability.
2
Analog Microelectronics, Inc.
AME41-ADJ
Micropower Voltage Reference Diode
n
Absolute Maximum Ratings
Parameter
Supply Current
Maximum
50
Unit
mA
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Recommended Operating Conditions
Parameter
Supply Current
Ambient Temperature Range
Junction Temperature
Rating
100
µ
A ~ 20mA
-40 to +85
-40 to +125
o
Unit
C
C
o
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Thermal Information
P a ra m e te r
S O T-23
Therm al Res is tanc e
TO -92
S O -8
M ax im um Junc tion Tem perature
M ax im um Lead Tem perature ( 10 S ec )
M a x im u m
325
180
124
150
300
o
o
Un it
C / W
C
C
o
Caution: Stress above the listed absolute rating may cause permanent damage to the device
3
Analog Microelectronics, Inc.
AME41-ADJ
Micropower Voltage Reference Diode
n
Electrical Specifications
Unless otherwise specified, TA = 25
o
C, I = 100
µ
A
PARAMETER
Reference Voltage,
±
0.2%
V
REF
Reference Voltage,
±
0.5%
Minimum Current
Reference Voltage Change With
Current
ADJ Pin Current
Reference Voltage Temp. Coeff.
I
MIN
I
MIN
< I < 1mA
dV
REF/I
1mA < I < 20mA
I
ADJ
V
REFTC
0
o
C < T
A
< 70
o
C
4
20
100
8
nA
ppm/
o
C
1.5
SYMBOL
TEST CONDITIONS
T
A
= 25 C, I
REF
= 100
µ
A
o
MIN
1.247
1.244
TYP
1.250
1.250
MAX
1.253
1.256
15
3
UNITS
V
V
µ
A
mV
4
Analog Microelectronics, Inc.
AME41-ADJ
Normalized Percentage Change vs.
Temperature
0.1
Output Voltage Change (mV)
Micropower Voltage Reference Diode
Output Voltage Change vs. Current
0
2
25
o
C
85
o
C
% Change of V
OUT
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-50
I = 100µA
1
0
-1
0
50
100
150
0.01
1
Current (mA)
100
(
O
C)
Reverse Characteristic
100µA
1.0V
Forward Characteristic
10µA
I
R
1µA
85
o
C
25
o
C
0.125V/DIV
25
o
C
85
o
C
100nA
0.0V
0.65V
1.3V
0.0V
1µA
100µA
10mA
V
R
Transient Response
25
o
C
5V/DIV
V
IN
VR
0.5V/DIV
200µS/DIV
5
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