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 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 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.
±25mV
±50mV
±50mV
±100mV
PACKAGE TYPE
TO-92
AMS236AN
AMS236BN
AMS336AN
AMS336BN
8 LEAD SOIC
AMS236AS
AMS236BS
AMS336AS
AMS336BS
OPERATING
TEMPERATURE RANGE
-25°C to +85°C
-25°C to +85°C
0°C to 70°C
0°C to 70°C
PIN CONNECTIONS
TO-92
Plastic Package (N)
8L SOIC
SO Package (S)
+
8
N/C N/C ADJ
7
6
5
3
2
1
1
2
3
N/C N/C N/C
4
-
Bottom View
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
Forward Current
Operating Temperature Range
AMS236
AMS336
15mA
10mA
-25°C to +85°C
0°C to +70°C
Storage temperature
Soldering information
TO-92 package: 10 sec.
SOIC package: Vapor phase (60 sec)
Infrared (15 sec.)
-55°C to +150°C
260°C
215°C
220°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
R
= 1 mA, and T
A
= +25°C unless otherwise specified.
Parameter
Reverse Breakdown Voltage
Reverse Dynamic Impedance
Reverse Breakdown Voltage
Change with current
Temperature Stability
Long Term Stability (Note 4)
f = 100Hz
400µA
≤I
R
≤10mA
-25°C
≤
T
A
≤
+85°C
T
A
=25°C±0.1°C
T = 1000 Hr
Conditions
Min
2.475
AMS236A
Typ
Max
2.500
0.2
0.4
2.6
3
3.5
20
2.525
0.6
1
6
10
9
Min
2.450
AMS236B
Typ
2.500
0.2
0.4
2.6
3
3.5
20
Max
2.550
0.6
1
6
10
9
Units
V
Ω
mV
mV
ppm
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
R
= 1 mA, and T
A
= +25°C unless otherwise specified.
Parameter
Reverse Breakdown Voltage
Reverse Dynamic Impedance
Reverse Breakdown Voltage
Change with current
Temperature Stability
Long Term Stability (Note 4)
f = 100Hz
400µA
≤I
R
≤10mA
0°C
≤
T
A
≤
70°C
T
A
=25°C±0.1°C
T = 1000 Hr
Conditions
Min
2.450
AMS336A
Typ
Max
2.500
0.2
0.4
2.6
3
1.8
20
2.550
1.0
1.4
10
12
6
Min
2.400
AMS336B
Typ
2.500
0.2
0.4
2.6
3
1.8
20
Max
2.600
1.0
1.4
10
12
6
Units
V
Ω
mV
mV
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 +125°C
AMS336 +100°C
Thermal Resistance
ϕ
JA
(junction to ambient)
TO-92
170°C/W (0.125” leads)
SO-8
165°C/W
Note 3:
Parameters identified with
boldface type
apply at temperature extremes. All other numbers apply at T
A
= T
J
= 25°C.
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
Reverse Characteristics
REVERSE VOLTAGE CHANGE (mV)
10
REVERSE CURRENT (µA)
-1
Reverse Voltage Change
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
2
6
8
4
REVERSE CURRENT (mA)
10
VOLTAGE SWING (V)
2.5
2.0
1.0
0
6
0
Response Time
OUTPUT
10
-2
2.5k
INPUT
OUTPUT
10
-3
T
J
= +25° C
10
-4
T
J
= +85° C
T
J
= -25° C
~
~
INPUT
~
~
10
-5
0.5
1.8
2.2
1.0
1.4
REVERSE VOLTAGE (V)
2.6
0
2
4
TIME (µs)
6
8
TYPICAL APPLICATIONS
2.5V Reference
Wide Input Range Reference
2.5V Reference with Minimum
Temperature Coefficient
5V
V
IN
3.5 TO 40V
10V
2.5k
2.5k
68
2.5V
V
OUT
= 2.5V
AMS336
AMS336
AMS336
10k†
1N914*
1N914*
† Adjust to 2.50V
* Any silicon signal diode
Precision Power Regulator with Low Temperature
Coefficient
V
IN
AMS1085
IN
OUT
ADJ
1.2k
V
OUT
Trimmed 2.5V Reference with Temperature Coefficient
Independent of Breakdown Voltage
10V
5k
1N457
10k*
1N457
R2
2k
OUTPUT
ADJUST
R1
375
AMS336
10k*
TRIM
AMS336
*Does not affect Temperature Coefficient
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)
0.060±0.005
(1.524±0.127)
DIA
0.180±0.005
(4.572±0.127)
0.060±0.010
(1.524±0.254)
0.140±0.010
(3.556±0.127)
0.180±0.005
(4.572±0.127)
0.90
(2.286)
NOM
5° NOM
0.500
(12.70)
MIN
10°
NOM
0.050
(1.270)
MAX
UNCONTROLLED
LEAD DIMENSIONS
0.050±0.005
(1.270±0.127)
0.016±0.003
(0.406±0.076)
0.015±0.002
(0.381±0.051)
N (TO-92 ) AMS DRW# 042391
8 LEAD SOIC PLASTIC PACKAGE (S)
0.189-0.197*
(4.801-5.004)
8
7
6
5
0.228-0.244
(5.791-6.197)
0.150-0.157**
(3.810-3.988)
1
2
3
4
0.053-0.069
(1.346-1.752)
0.004-0.010
(0.101-0.254)
0.008-0.010
(0.203-0.254)
0.010-0.020
x 45°
(0.254-0.508)
0°-8° TYP
0.014-0.019
(0.355-0.483)
0.050
(1.270)
TYP
0.016-0.050
(0.406-1.270)
S (SO-8 ) AMS DRW# 042293
*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
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
