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TS824-1.2
HIGH THERMAL STABILITY MICROPOWER SHUNT VOLTAGE REFERENCE
s LOW Tc: 50 ppm/C MAXIMUM s 1.225V OUTPUT VOLTAGE s LOW OPERATING CURRENT: 45A max @
25C
s HIGH PRECISION AT 25C: 1% s STABLE WHEN USED WITH CAPACITIVE
LOADS
s INDUSTRIAL TEMPERATURE RANGE:
-40 to +85C DESCRIPTION The TS824 is a low power shunt voltage reference featuring a very low temperature coefficient of 50ppm/C as a maximum value. Providing 1.225V output voltage, the TS824 operates over the industrial temperature range (-40 to +85C). Ideal for battery-powered equipments where power conservation is critical, the TS824 is housed in a tiny SOT23-3 package allowing space saving. The TS824 is typically stable with any capacitive loads within the entire temperature range. The product is thus easy to use and the design simplified. APPLICATION
L SOT23-3L (Plastic Micropackage)
PIN CONNECTIONS (top view)
s s s s
Instrumentation, Data acquisition systems, Portable, Battery powered equipments Power management
ORDER CODE
Voltage Precision SOT23-3 SOT23 Marking L251
1.225V 1% TS824ILT-1.2 Single temperature range: -40 to +85C
LT = Tiny Package (SOT23-3) - only available in Tape & Reel (LT)
March 2002
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TS824-1.2
ABSOLUTE MAXIMUM RATINGS
Symbol IK IF PD TStd TJ TLead ESD Parameter Reverse Breakdown Current Forward Current Power Dissipation (note 1) Storage Temperature Junction Temperature Lead Temperature (soldering, 10 seconds) Human Body Model (HBM) (note 2) Machine Model (MM) (note 2) SOT23-3 Value 20 10 360 -65 to +150 +150 +260 2 200 Unit mA mA mW C C C kV V
Note 1: The maximum power dissipation must be derated at high temperature. It can be calculated using TJMAX (maximum junction temperature), RTHJA (Thermal resistance junction to ambient) and T A (Ambient temperature). The maximum power dissipation formula at any temperature is P DMAX= (TJMAX - TA) / RTHJA. RTHJA is 340C/W for the SOT23-3 package. Note 2: The Human Body Model (HBM) is defined as a 100pF capacitor discharge through a 1.5k resistor into each pin. The Machine Mode (MM) is defined as a 200pF capacitor discharge directly into each pins.
OPERATING CONDITIONS
Symbol Imin Imax Toper Minimum Operating Current Maximum Operating Current Operating Free Air Temperature Range Parameter Value 40 12 -40 to +85 Unit A mA C
ELECTRICAL CHARACTERISTICS (note 3) Tamb = 25C (unless otherwise specified)
Symbol VK Parameter Reverse Breakdown Voltage Test Condition IK = 100A Min. 1.213 -12 -16 40 Typ. 1.225 Max. 1.237 +12 +16 45 50 50 0.3 2.5 0.3 0.25 120 200 1 1.5 8 10 1 1.5 0.7 0.9 Unit V mV A ppm/C
I = 100A Reverse Breakdown Voltage Tolerance K -40C < Tamb < +85C Minimum Operating Current Average Temperature Coefficient (note 4) Reverse Breakdown Voltage Change with Operating Current Range Tamb = 25C -40C < Tamb < +85C IK = 100A IKMIN < IK < 1mA -40C < Tamb < +85C 1mA < IK < 12mA -40C < Tamb < +85C IK = IKMIN to 1mA -40C < Tamb < +85C IK = 1mA to 12mA -40C < Tamb < +85C IK = 100A, t = 1000hrs IK = 100A 100Hz < f < 10kHz
IKMIN VK /T
VK /IK
mV
RKA
Static Impedance
KVH EN
Long Term Stability Wide Band Noise
ppm nV/Hz
Note 3: Limits are 100% production tested at 25C. Limits over temperature are guaranteed through correlation and by design. Note 4: The total tolerance within the industrial range, where the maximum T versus 25C is 65C, is explained hereafter: 1 % + ( 50 ppm/C x 65C) = 1.325 %
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TS824-1.2
Reference voltage versus cathode current
1.5
Reference voltage versus cathode current
1.5
Reference voltage (V)
1.0 T = +25C 0.5
Reference voltage (V)
1.0
T=+85C 0.5 T=+25C T=-40C
0.0
-0.5
-1.0 -10
0.0 -5 0 5 10 0 25 50 75 100
Cathode current (mA)
Cathode current (A)
Test circuit
Reference voltage versus Temperature
1.240
R
i=0
Cathode voltage (V)
1.235 1.230 1.225 1.220 1.215 1.210 -40 -20 0 20 40 60 80
IK=(VIN-VREF)/R VOUT=VREF VIN
Temperature (C)
Static impedance for Ik < 1mA
Static impedance for Ik < 1mA ()
Static impedance for Ik > 1mA
Static impedance for Ik > 1mA ()
0.9
1.5
1.0
0.6
0.5
0.3
0.0 -40
-20
0
20
40
60
80
0.0 -40
-20
0
20
40
60
80
Temperature (C)
Temperature (C)
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TS824-1.2
Start-Up characteristics with low Ik (100A)
4
Start-Up schematic with low Ik (100A)
Input signal
18K
Ik=100A
Voltage (V)
Voltage reference
0 0 5 10 15 20
Time (s)
Noise versus frequency
300 T = +25C
Noise (nV / Hz)
200
100
0 0.1
1
10
100
1000
10000
Frequency (kHz)
4/5
Output
Intput
2
Pulse G enerator
TS824-1.2
PACKAGE MECHANICAL DATA 3 PINS - TINY PACKAGE (SOT23-3)
D
e
GAUGE PLANE 0.25
k
L E1 E b
c
e1
C
A2
Millimeters Dimensions Min. A A1 A2 b c D E E1 e e1 L L1 k 0.890 0.010 0.880 0.300 0.080 2.800 2.100 1.200 Typ. Max. 1.120 0.100 1.020 0.500 0.200 3.040 2.640 1.400 Min. 0.035 0.0004
A1
A
0.10
SEATING PLANE
C
L1
Inches Typ. Max. 0.044 0.004 0.040 0.020 0.008 0.120 0.104 0.055
0.950
0.037 0.012 0.003 0.110 0.083 0.047
2.900 1.300 0.950 1.900 0.500 0.540
0.114 0.051 0.037 0.075 0.020 0.021
0.400 0
0.600 8
0.016
0.024
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2002 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States (c) http://www.st.com - United Kingdom
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