AME AME385CEET Micropower voltage reference diode Datasheet

Analog Microelectronics, Inc.
Micropower Voltage Reference Diode
AME385-1.2
n General Description
n Key Features
The AME385-1.2 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 ±0.2% and ±0.5% initial tolerance. The design of the AME385-1.2 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.
l Small packages: SOT-23, TO-92, SO-8
l Tolerates capacitive loads
l Fixed reverse breakdown voltage of 1.235V
l Tight voltage tolerance ---------- ±0.20%, ±0.5%
l Wide operating current ---------- 15µA to 20mA
l Wide temperature range -------- -40oC to +85oC
l Low temperature coefficient --- 100ppm/oC (max)
l Excellent transient response
n Applications
l
l
l
l
l
l
Portable electronics
Power supplies
Computer peripherals
Data acquisition systems
Battery chargers
Consumer electronics
n Functional Block Diagram
n Typical Application
VR
VS
RS
B andgap
Cell
Feedbac k
GND
Current
S hunt
VR
V R = 1.235V
RS =
1
I
1000pF
V alue optional
VS - VR
I
Analog Microelectronics, Inc.
Micropower Voltage Reference Diode
AME385-1.2
n Package Outline
SOT-23 Top View
TO-92-3 Bottom View
NC *
+
NC *
+
TO-92-2 Bottom View
+
-
-
-
SO-8 Top View
NC
1
8
+
NC
2
7
NC
NC
3
6
NC
-
4
5
NC
* The NC pin must float or be connected to - (negative)
n Ordering Information
Part N umber
Accuracy
Marking
A ME385CE ET
0.2%
A CQww
A ME385CE HA
0.2%
A M E385A E AS
0.5%
A M E385A E AT
0.5%
A M E385A E ET
0.5%
A M E385A E HA
0.5%
Package Operating Temp. R ange
S OT-23
-40 O C to +85 O C
S O-8
-40 O C to +85 O C
TO-92-2
-40 O C to +85 O C
TO-92-3
-40 O C to +85 O C
A BXww
S OT-23
-40 O C to +85 O C
A ME
385A EHA
yyww
S O-8
-40 O C to +85 O C
A ME
385CEHA
yyww
A ME
385
A EA S
yyww
A ME
385
A EA T
yyww
Please consult AME sales office or authorized Rep./Distributor for other voltage accuracy and
package type availability.
2
Analog Microelectronics, Inc.
Micropower Voltage Reference Diode
AME385-1.2
n Absolute Maximum Ratings
Parame te r
Supply Current
Maximum
Unit
50
mA
Rating
Unit
n Recommended Operating Conditions
Parameter
100µA ~ 20mA
Supply Current
Ambient Temperature Range
Junction Temperature
-40 to +85
o
C
-40 to +125
o
C
n Thermal Information
P a ra m e te r
Th e rm a l R e s is t a n c e
M a x im u m
S O T-2 3
325
TO -9 2
180
S O -8
125
Un it
o
C / W
M ax im u m Jun c t io n Te m p era t u re
150
o
C
M ax im u m L e a d Te m p e ra tu re ( 1 0 S e c )
300
o
C
Caution: Stress above the listed absolute rating may cause permanent damage to the device
3
Analog Microelectronics, Inc.
Micropower Voltage Reference Diode
AME385-1.2
n Electrical Specifications
Unless otherwise specified, TA = 0 ~70 o C, I R = 100 µA
PARAMETER
SYMBOL
Reference Voltage, ±0.2%
VREF
TEST CONDITIONS
Reference Voltage Change With
Current
MAX
UNITS
1.232
1.235
1.238
V
1.229
1.235
1.241
V
15
µA
IMIN
IMIN < I < 1mA
1.5
3
5
20
mV
dVREF/I
1mA < I < 20mA
Maximum Operation Current
ILmax
Reverse Dynamic Impedence
RDI
IR= 100µA, f=20Hz
1.5
Ohm
Wideband Noise (rms)
Vn
IR= 100µA, 10 Hz<f<10KHz
60
µV
IR= 100µA, TA=25OC,
T=1000 Hours
20
ppm
Long term Stability
Reference Voltage Temp. Coeff.
4
TYP
IREF = 100µA
Reference Voltage, ±0.5%
Minimum Current
MIN
VREFTC
20
0oC < TA < 70oC
mA
100
ppm/oC
Analog Microelectronics, Inc.
Micropower Voltage Reference Diode
AME385-1.2
Normalized Percentage Change vs.
Temperature
Output Voltage Change vs. Current
0.1
% Change of VOUT
0
2
-0.1
I = 100µA
-0.2
1
(mV)
-0.3
-0.4
0
-0.5
-0.6
-50
-1
0
50
100
150
1
0.0
( C)
(mA)
Reverse Characteristic
Forward Characteristic
O
100
1.0V
100µA
10µA
25oC
IR
0.125V/DIV
85oC
85oC
1µA
25oC
0.0V
100nA
0.0V
0.65V
1.3V
VR
Transient Response
o
25 C
5V/DIV
VIN
VR
0.5V/DIV
200µS/DIV
5
1µA
100µA
10mA
Analog Microelectronics, Inc.
Micropower Voltage Reference Diode
AME385-1.2
n Package Dimension
SOT-23
SYMBOLS
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
A
1.00
1.40
0.0394
0.0551
A1
0.00
0.15
0.0000
0.0059
b
0.35
0.50
0.0138
0.0197
C
0.09
0.25
0.0035
0.0098
D
2.70
3.10
0.1063
0.1220
E
1.40
1.80
0.0551
0.0709
1.90 BSC
e
0.0748 BSC
H
2.60
3.00
0.1024
0.1181
L
0.35
0.55
0.0138
0.0197
θ1
0o
9o
0o
9o
R
0.95(TYP)
0.0374(TYP)
MILLIMETERS
INCHES
SO-8
SYMBOLS
MIN
MAX
MIN
MAX
A
1.35
1.75
0.053
0.069
A1
0.10
0.25
0.004
0.010
A2
θ
1.45 REF
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.010
D
4.80
5.00
0.189
0.1970
E
3.80
4.00
0.150
0.157
e
1.27 BSC
0.050 BSC
H
5.80
6.20
0.228
0.244
L
0.40
1.27
0.016
0.050
y
θ
6
0.057 REF
0.10
o
0
o
8
0.004
o
0
8o
Analog Microelectronics, Inc.
AME385-1.2
Micropower Voltage Reference Diode
n Package Dimension
TO-92-3
MILLIMETERS
MIN
MAX
INCHES
MIN
MAX
A
4.32
4.95
0.170
0.195
b
0.36
0.51
0.014
0.020
E
3.30
3.94
0.130
0.155
e
2.41
2.67
0.095
0.105
e1
1.14
1.40
0.045
0.055
L
12.70
15.49
0.500
0.610
R
2.16
2.41
0.085
0.095
S1
1.14
1.52
0.045
0.060
SYMBOLS
W
0.41
0.56
0.016
0.022
D
4.45
4.95
0.175
0.195
a
4°
6°
4°
6°
NOTE:
1. PACKAGE OUTLINE EXCLUSIVE OF ANY MOLD FLASHES
DIMENSION
2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION
TO-92-2
MILLIMETERS
MIN
MAX
INCHES
MIN
MAX
A
4.32
4.95
0.170
0.195
b
0.36
0.51
0.014
0.020
E
3.30
3.94
0.130
0.155
e
2.41
2.67
0.095
0.105
SYMBOLS
e1
1.14
1.40
0.045
0.055
L
12.70
15.49
0.500
0.610
R
2.16
2.41
0.085
0.095
S1
1.14
1.52
0.045
0.060
W
0.41
0.56
0.016
0.022
D
4.45
4.95
0.175
0.195
a
°
4
°
6
°
4
°
6
NOTE:
1. PACKAGE OUTLINE EXCLUSIVE OF ANY MOLD FLASHES
DIMENSION
2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION
7
iii
www.analogmicro.com
E-Mail: [email protected]
Life Support Policy:
These products of Analog Microelectronics, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of Analog Microelectronics, Inc.
Analog Microelectronics, Inc. reserves the right to make changes in the circuitry and specifications of its devices
and advises its customers to obtain the latest version of relevant information.
 Analog Microelectronics, Inc. , October 2001
Document: 2003-DS385-1.2-D
Corporate Headquarters
Asia Pacific Headquarters
Analog Microelectronics, Inc.
AME, Inc.
3100 De La Cruz Blvd. Suite 201
Santa Clara, CA. 95054-2046
2F, 187 Kang-Chien Road, Nei-Hu Dist.,
Taipei 114, Taiwan, R.O.C.
Tel : (408) 988-2388
Fax: (408) 988-2489
Tel : 886 2 2627-8687
Fax: 886 2 2659-2989
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