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Advanced Monolithic Systems
FEATURES
* Low Temperature Coefficient * Wide Operating Current Range * Guaranteed Temperature Stability * Max. 0.6 Dynamic Impedance (A grade) * 1% Initial Tolerance Available
AMS236/AMS336
VOLTAGE REFERENCE DIODE
RoHS compliant
APPLICATIONS
* Power Supplies * Instrumentation * 8 Bit A/D, D/A Reference * Current Loop Measurement and Control Systems * 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 400A 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 -25C to +85C while the AMS336 is rated over a 0C to 70C 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 -25C to +85C -25C to +85C 0C to 70C 0C to 70C
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.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS236/AMS336
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current Forward Current Operating Temperature Range AMS236 AMS336 15mA 10mA -25C to +85C 0C to +70C Storage temperature Soldering information (25 sec) -55C to +150C 265C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 1 mA, and TA = +25C 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 400A IR 10mA -25C TA +85C TA=25C0.1C 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 Max
2.500 0.2 0.4 2.6 3 3.5 20 2.550 0.6 1 6 10 9
Units
V mV mV ppm
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IR = 1 mA, and TA = +25C 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 400A IR 10mA 0C TA 70C TA=25C0.1C 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 Max
2.500 0.2 0.4 2.6 3 1.8 20 2.600 1.0 1.4 10 12 6
Units
V 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, Tj max is:
AMS236 +125C AMS336 +100C
Thermal Resistance
JA (junction to ambient)
TO-92
170C/W (0.125" leads)
SO-8
165C/W
Note 3: Parameters identified with boldface type apply at temperature extremes. All other numbers apply at TA = TJ = 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 TMAX and TMIN, divided by TMAX - TMIN.
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS236/AMS336
TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Characteristics REVERSE VOLTAGE CHANGE (mV) 10 -1 REVERSE CURRENT (A) 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 0 2 4 TIME (s) 6 8
2.5k INPUT OUTPUT OUTPUT
Reverse Voltage Change
Response Time
10
-2
10
-3
TJ = +25 C
10 -4
TJ = +85 C TJ = -25 C
~ ~
INPUT
~ ~
10
-5
0.5
1.8 2.2 1.0 1.4 REVERSE VOLTAGE (V)
2.6
TYPICAL APPLICATIONS
2.5V Reference Wide Input Range Reference 2.5V Reference with Minimum Temperature Coefficient
5V
VIN 3.5 TO 40V
10V
2.5k
2.5k
68
1N914*
2.5V
VOUT = 2.5V
AMS336
AMS336
AMS336
10k 1N914*
Adjust to 2.50V * Any silicon signal diode
Precision Power Regulator with Low Temperature Coefficient
VIN AMS1085 IN OUT ADJ 1.2k VOUT
Trimmed 2.5V Reference with Temperature Coefficient Independent of Breakdown Voltage
10V
5k
1N457 10k* 1N457
R1 375
AMS336
10k* TRIM
AMS336
R2 2k OUTPUT ADJUST
*Does not affect Temperature Coefficient
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS336
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
3 LEAD TO-92 PLASTIC PACKAGE (N)
0.0600.005 (1.5240.127) DIA
0.1800.005 (4.5720.127) 0.0600.010 (1.5240.254) 0.1400.010 (3.5560.127)
0.1800.005 (4.5720.127)
0.90 (2.286) NOM
5 NOM 0.500 (12.70) MIN
10 NOM
0.050 (1.270) MAX
UNCONTROLLED LEAD DIMENSIONS
0.0500.005 (1.2700.127)
0.0160.003 (0.4060.076)
0.0150.002 (0.3810.051)
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.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723

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