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Part: LM136AH-2.5
Category:
Description: 2.5 Volt Reference
Company: Linear Technology Corporation
Datasheet: Download LM136AH-2.5 datasheet File size : 41 kB
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Datasheet text preview:
LM136-2.5/LM336-2.5 2.5V Reference
FEATURES
s s s s
DESCRIPTIO
Guaranteed Temperature Stability Maximum 0.6 Dynamic Impedance Adjustable for Minimum Temperature Coefficient Wide Operating Current Range
APPLICATIO S
s s s s s
Reference for 5V Systems 8-Bit A/D and D/A Reference Digital Voltmeters Current Loop Measurement and Control Systems Power Supply Monitor
The LM136-2.5 is a general purpose shunt regulator diode designed to operate over a wide current range while maintaining good stability with time and temperature. The third terminal allows either the temperature coefficient to be minimized or the reference voltage to be adjusted without changing the temperature coefficient. Because it operates as a shunt regulator it can be used equally well as a positive or negative reference. The LM136-2.5 is available with initial tolerances as low as 1% in either a TO-46 metal can for hermetic requirements or a low cost TO-92 plastic package. Linear's advanced design, test and process techniques have optimized the LM136-2.5 to achieve superior performance and reliability over previous designs. For more demanding precision reference applications requiring very low initial tolerance and temperature coefficients, consult the LT1009 data sheet. A typical 2.5V reference with trim is shown below.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
2.5V Reference
3.5
5V TO 35V 3.6k OUTPUT LM336-2.5 10k* TRIM * DOES NOT AFFECT TEMPERATURE COEFFICIENT
136/336 TA01a
TA = 25°C
REVERSE VOLTAGE CHANGE (mV)
3.0 2.5 2.0 1.5 1.0 0.5 0 0 2 4 8 6 REVERSE CURRENT (mA) 10
U
Reverse Voltage Change
136/336 TA01b
U
U
1
LM136-2.5/LM336-2.5
ABSOLUTE
AXI U RATI GS
Operating Temperature Range LM136-2.5 (OBSOLETE) ..... 55°C to 125°C LM336-2.5 .... 0°C to 70°C Storage Temperature Range ........ 65°C to 150°C
PACKAGE/ORDER I FOR ATIO
BOTTOM VIEW
ORDER PART NUMBER LM136H-2.5 LM136AH-2.5 LM336H-2.5 LM336AH-2.5
ADJ
+
H PACKAGE 3-LEAD TO-46 METAL CAN TJMAX = 150°C, JA = 440°C/W (NOTE 2)
OBSOLETE PACKAGE
Consider the Z Packages for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2)
SYMBOL VZ PARAMETER Reverse Breakdown Voltage CONDITIONS TA = 25°C, IR = 1mA LM136/LM336 LM136A/LM336B 400µA IR 10mA TA = 25°C TMIN TA TMAX IR = 1mA TA =25°C TMIN TA TMAX VR Adjusted to 2.490V, IR = 1mA, TMIN TA TMAX (See Figure 1) TA = 25°C ± 0.1°C, IR = 1mA LM136/LM136A MIN TYP MAX 2.440 2.465 2.490 2.490 2.6 3.0 0.2 0.4 12 20
V+ R 1mA * D1 5k D2
ELECTRICAL CHARACTERISTICS
VZ IR rZ
Reverse Breakdown Change with Current Reverse Dynamic Impedance
VZ Temp VZ Time
Temperature Stability Long Term Stability
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LT1009 is an improved, low cost, pin for pin replacement for the "A" and "B" versions. For further information consult the LT1009 data sheet.
2
U
U
W
WW U
W
(Note 1)
Lead Temperature (Soldering, 10 sec)......... 300°C Reverse Current .... 15mA Forward Current ......... 10mA
BOTTOM VIEW ADJ
+
ORDER PART NUMBER LM336Z-2.5 LM336BZ-2.5
Z PACKAGE 3-LEAD PLASTIC TO-92
TJMAX = 150°C, JA = 160°C/W (NOTE 2)
MIN
LM336/LM336B TYP MAX 2.490 2.490 2.6 3.0 0.2 0.4 1.8 20 2.590 2.540 10 12 1.0 1.4 6
UNITS V V mV mV mV ppm/kHr
2.540 2.515 6 10 0.6 1.0 18
2.390 2.440
q
q q
2.490V D1, D2 1N4148 * ADJUST TO 2.490 ANY SILICON SIGNAL DIODE
136/336 F01
Figure 1. Adjusting the LM336 for Minimum Temperature Coefficient
LM136-2.5/LM336-2.5 TYPICAL PERFOR A CE CHARACTERISTICS
Reverse Characteristics
10 1 1.2 1.0 FORWARD VOLTAGE (V) REVERSE CURRENT (A) REVERSE VOLTAGE (V) 10 2 0.8 0.6 0.4 0.2 Tj = 55°C 10 5 0.6 1.0 1.8 2.2 1.4 REVERSE VOLTAGE (V) 2.6 0 0.001 0.01 0.1 1 FORWARD CURRENT (mA) 10
136/336 G02 136/336 · G01 136/336 G03
10 3 Tj = 25°C 10 4 Tj = 125°C
Dynamic Impedance
100 IR = 1mA 55°C Tj 125°C 250
DYNAMIC IMPEDANCE ()
NOISE (nV/Hz)
10
VOLTAGE SWING (V)
1
0.1 10 100 1k 10k FREQUENCY (Hz) 100k
136/336 G04
SCHE ATIC DIAGRA
Q1
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
W
UW
Q2 Q3
Forward Characteristics
Tj = 25°C 2.59 2.57 2.55 2.53 2.51 2.49 2.47 2.45 2.43 2.41 2.39
Temperature Drift
IR = 1mA
2.37 55 35 15
5 25 45 65 85 105 125 TEMPERATURE (°C)
Zener Noise Voltage
IR = 1mA Tj = 25°C
Response Time
3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 12 8 4 INPUT OUTPUT 5.1k OUTPUT
200
150
100
INPUT
50 10
100
1k FREQUENCY (Hz)
10k
100k
136/336 G05
0
0
1 TIME (µs)
20
136/336 G06
W
+
Q17 50k Q9 24k Q8 20pF Q7 10k 30pF Q10 Q11 Q15 30k Q4 Q6 Q12 Q13 Q14 6.6k ADJ Q16 5 0 0 24k 6.6k
Q5
2k
1.1k
Q18
136/336 SD
3
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