TS824-1.2

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: 45µA max @ 25°C s HIGH PRECISION AT 25°C: ±1% s STABLE WHEN USED WITH CAPACITIVE LOADS s INDUSTRIAL TEMPERATURE RANGE: -40 to +85°C 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 +85°C). 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 +85°C L T = Tiny Package (SOT23-3) - only available in Tape & Reel (LT) March 2002 1/5 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 340°C/W for the SOT23-3 package. Note 2: The Human Body Model (HBM) is defined as a 100pF capacitor discharge through a 1.5kΩ 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 µA mA °C ELECTRICAL CHARACTERISTICS (note 3) Tamb = 25°C (unless otherwise specified) Symbol VK Parameter Reverse Breakdown Voltage Test Condition IK = 100µA 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 µA ppm/°C I = 100µA Reverse Breakdown Voltage Tolerance K -40°C < Tamb < +85°C Minimum Operating Current Average Temperature Coefficient (note 4) Reverse Breakdown Voltage Change with Operating Current Range Tamb = 25°C -40°C < Tamb < +85°C IK = 100µA IKMIN < IK < 1mA -40°C < Tamb < +85°C 1mA < IK < 12mA -40°C < Tamb < +85°C ∆IK = IKMIN to 1mA -40°C < Tamb < +85°C ∆IK = 1mA to 12mA -40°C < Tamb < +85°C IK = 100µA, t = 1000hrs IK = 100µA 100Hz < f < 10kHz IKMIN ∆VK /∆T ∆VK /∆IK mV RKA Static Impedance Ω KVH EN Long Term Stability Wide Band Noise ppm nV/√Hz Note 3: Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation and by design. Note 4: The total tolerance within the industrial range, where the maximum ∆ T versus 25°C is 65°C, is explained hereafter: ± 1 % + (± 50 ppm/°C x 65°C) = ± 1.325 % 2/5 TS824-1.2 Reference voltage versus cathode current 1.5 Reference voltage versus cathode current 1.5 Reference voltage (V) 1.0 T = +25°C 0.5 Reference voltage (V) 1.0 T=+85°C 0.5 T=+25°C T=-40°C 0.0 -0.5 -1.0 -10 0.0 -5 0 5 10 0 25 50 75 100 Cathode current (mA) Cathode current (µA) 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 (Ω) Static impedance for Ik > 1mA Static impedance for Ik > 1mA (Ω) 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) 3/5 TS824-1.2 Start-Up characteristics with low Ik (100µA) 4 Start-Up schematic with low Ik (100µA) Input signal 18K Ω Ik=100µA Voltage (V) Voltage reference 0 0 5 10 15 20 Time (µs) Noise versus frequency 300 T = +25°C 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. © The ST logo is a registered trademark of STMicroelectronics © 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 © http://www.st.com - United Kingdom 5/5