Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
AMS236/AMS336
Monolithic
VOLTAGE REFERENCE DIODE
Systems
FEATURES
APPLICATIONS
Low Temperature Coefficient
Power Supplies
Wide Operating Current Range
Instrumentation
Guaranteed Temperature Stability
8 Bit A/D, D/A Reference
Max. 0.6
Dynamic Impedance (A grade)
Current Loop Measurement and Control Systems
1% Initial Tolerance Available
Reference for 5V Systems
GENERAL DESCRIPTION
The AMS236/AMS336 are precision band-gap voltage reference diodes. These voltage reference features a very low dynamic
impedance and good temperature coefficient, operating over a wide current range of 400
A to 10mA. On-chip trimming is
used to provide tight tolerance and minimize temperature drift. A third terminal allows the reference voltage to be trimmed
5%.
The AMS236/AMS336 are 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 AMS236 is rated for operation over -25
C to +85
C while the AMS336 is rated over a 0
C to 70
C temperature range.
The AMS236/AMS336 are available in TO-92 and SO-8 packages.
ORDERING INFORMATION:
TOL.
PACKAGE TYPE
OPERATING
TO-92
8 LEAD SOIC
TEMPERATURE RANGE
25mV AMS236AN
AMS236AS
-25
C to +85
C
50mV AMS236BN
AMS236BS
-25
C to +85
C
50mV AMS336AN
AMS336AS
0
C to 70
C
100mV AMS336BN
AMS336BS
0
C to 70
C
PIN CONNECTIONS
TO-92
8L SOIC
Plastic Package (N)
SO Package (S)
1
2
3
Bottom View
1
2
8
4
3
7
5
6
N/C ADJ
N/C
N/C N/C
N/C
+
-
Top View
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS236/AMS336
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current
15mA
Storage temperature
-55
C to +150
C
Forward Current
10mA
Soldering information
Operating Temperature Range
TO-92 package: 10 sec.
260
C
AMS236
-25
C to +85
C
SOIC package: Vapor phase (60 sec)
215
C
AMS336
0
C to +70
C
Infrared (15 sec.)
220
C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
R
= 1 mA, and T
A
= +25C unless otherwise specified.
Parameter
Conditions
AMS236A
Min Typ Max
AMS236B
Min Typ Max
Units
Reverse Breakdown Voltage
2.475
2.500
2.525
2.450
2.500
2.550
V
Reverse Dynamic Impedance
f = 100Hz
0.2
0.4
0.6
1
0.2
0.4
0.6
1
Reverse Breakdown Voltage
Change with current
400
A
I
R
10mA
2.6
3
6
10
2.6
3
6
10
mV
Temperature Stability
-25
C
T
A
+85
C
3.5
9
3.5
9
mV
Long Term Stability (Note 4)
T
A
=25C0.1C
T = 1000 Hr
20
20
ppm
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
R
= 1 mA, and T
A
= +25C unless otherwise specified.
Parameter
Conditions
AMS336A
Min Typ Max
AMS336B
Min Typ Max
Units
Reverse Breakdown Voltage
2.450
2.500
2.550
2.400
2.500
2.600
V
Reverse Dynamic Impedance
f = 100Hz
0.2
0.4
1.0
1.4
0.2
0.4
1.0
1.4
Reverse Breakdown Voltage
Change with current
400
A
I
R
10mA
2.6
3
10
12
2.6
3
10
12
mV
Temperature Stability
0
C
T
A
70
C
1.8
6
1.8
6
mV
Long Term Stability (Note 4)
T
A
=25C0.1C
T = 1000 Hr
20
20
ppm
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
j
max is:
AMS236 +125C
AMS336 +100C
Thermal Resistance
TO-92
SO-8
JA
(junction to ambient)
170C/W (0.125" leads)
165C/W
Note 3:
Parameters identified with boldface type apply at temperature extremes. All other numbers apply at T
A
= T
J
= 25C.
Note 4:
Temperature stability for the AMS236/336 family is guaranteed by design. Design limits are guaranteed (but not 100% production tested) over the
specified temperature and supply voltage ranges. These limits are not used to calculate outgoing quality levels. The average temperature coefficient is defined as the
maximum deviation of reference voltage at all measured temperatures between the operating T
MAX and
T
MIN
, divided by T
MAX
- T
MIN
.
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS236/AMS336
TYPICAL PERFORMANCE CHARACTERISTICS
TYPICAL APPLICATIONS
2.5V Reference
Wide Input Range Reference
2.5V Reference with Minimum
Temperature Coefficient
Adjust to 2.50V
* Any silicon signal diode
Precision Power Regulator with Low Temperature
Coefficient
Trimmed 2.5V Reference with Temperature Coefficient
Independent of Breakdown Voltage
*Does not affect Temperature Coefficient
10k*
TRIM
AMS336
10V
5k
IN
ADJ
OUT
AMS1085
V
IN
AMS336
1.2k
R1
375
R2
2k
V
OUT
10k*
1N457
1N457
OUTPUT
ADJUST
V
OUT
= 2.5V
AMS336
V
IN
3.5 TO 40V
68
2.5V
AMS336
10V
2.5k
2.5k
10k
1N914*
1N914*
AMS336
5V
0.5
1.0
1.4
1.8
2.2
10
-5
10
-1
2.6
REVERSE VOLTAGE (V)
REVERSE CURRENT (
A)
10
-4
Reverse Characteristics
T
J
= +85 C
T
J
= -25 C
T
J
= +25 C
0
2
4
6
8
0
3.0
2.0
Reverse Voltage Change
10
REVERSE CURRENT (mA)
REVERSE VOLTAGE CHANGE (mV)
1.0
3.5
2.5
10
-2
10
-3
0
6
0
1.0
2.5
0
2
6
TIME (
s)
Response Time
VOLTAGE SWING (V)
2.0
~
~
2.5k
OUTPUT
INPUT
OUTPUT
INPUT
~
~
4
8
0.5
1.5
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS336
PACKAGE DIMENSIONS
inches (millimeters) unless otherwise noted.
3 LEAD TO-92 PLASTIC PACKAGE (N)
8 LEAD SOIC PLASTIC PACKAGE (S)
0.1400.010
(3.5560.127)
0.0600.010
(1.5240.254)
0.0150.002
(0.3810.051)
0.0160.003
(0.4060.076)
0.0500.005
(1.2700.127)
0.0600.005
(1.5240.127)
DIA
0.1800.005
(4.5720.127)
0.1800.005
(4.5720.127)
0.050
(1.270)
MAX
0.500
(12.70)
MIN
UNCONTROLLED
LEAD DIMENSIONS
10
NOM
5 NOM
N (TO-92 ) AMS DRW# 042391
0.90
(2.286)
NOM
0-8 TYP
0.010-0.020
(0.254-0.508)
S (SO-8 ) AMS DRW# 042293
x 45
0.016-0.050
(0.406-1.270)
0.008-0.010
(0.203-0.254)
0.004-0.010
(0.101-0.254)
0.014-0.019
(0.355-0.483)
0.053-0.069
(1.346-1.752)
0.050
(1.270)
TYP
0.150-0.157**
(3.810-3.988)
0.228-0.244
(5.791-6.197)
0.189-0.197*
(4.801-5.004)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
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