TS824-2.5 HIGH THERMAL STABILITY MICROPOWER SHUNT VOLTAGE REFERENCE ■ LOW Tc: 50 ppm/°C MAXIMUM ■ 2.5V OUTPUT VOLTAGE ■ LOW OPERATING CURRENT: 60µA max @ 25°C ■ HIGH PRECISION AT 25°C: ±0.5% AND ±1% ■ STABLE WHEN USED WITH CAPACITIVE LOADS ■ INDUSTRIAL TEMPERATURE RANGE: -40 to +85°C DESCRIPTION The TS824-2.5 is a low power shunt voltage reference featuring a very low temperature coefficient of 50ppm/°C as a maximum value. Providing a 2.5V output voltage, the TS824-2.5 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. L SOT23-3L (Plastic Micropackage) PIN CONNECTIONS (top view) APPLICATION ■ ■ ■ ■ Instrumentation, Data acquisition systems, Portable, Battery powered equipments Power management ORDER CODE Voltage Precision SOT23-3 ±1% TS824ILT-2.5 ±0.5% TS824AILT-2.5 Single temperature range: -40 to +85°C 2.5V SOT23 Marking L252 L253 LT = Tiny Package (SOT23-3) - only available in Tape & Reel (LT) March 2002 1/5 TS824-2.5 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit IK Reverse Breakdown Current 20 mA IF Forward Current 10 mA PD Power Dissipation (note1) TStd Storage Temperature ESD TLead SOT23-3 360 mW -65 to +150 °C Human Body Model (HBM) (note2) Machine Model (MM) (note 2) 2 200 kV V Lead Temperature (soldering, 10 seconds) 260 °C 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 Parameter Imin Minimum Operating Current Imax Maximum Operating Current Toper Operating Free Air Temperature Range Value Unit 60 µA 15 mA -40 to +85 °C ELECTRICAL CHARACTERISTICS (note 3) Tamb = 25°C (unless otherwise specified) Symbol Parameter Reverse Breakdown Voltage VK Reverse Breakdown Voltage Tolerance IKMIN ∆VK /∆T ∆VK /∆IK Minimum Operating Current Average Temperature Coefficient (note 5) Reverse Breakdown Voltage Change with Operating Current Range Test Condition Min. Typ. Max. IK = 100µA, ±0.5% 2.4875 2.500 2.5125 IK = 100µA, ±1% 2.475 IK = 100µA, ±0.5% -40°C < Tamb < +85°C -12.5 -20 +12.5 +20 IK = 100µA, ±1% -40°C < Tamb < +85°C -25 -33 +25 +33 Tamb = 25°C 2.500 50 2.525 60 -40°C < Tamb < +85°C 65 IK = 100µA 50 IKMIN < IK < 1mA -40°C < Tamb < +85°C 0.4 1 1.2 1mA < IK < 15mA -40°C < Tamb < +85°C 4.5 8 10 ∆IK = IKMIN to 1mA -40°C < Tamb < +85°C 0.4 1 1.2 0.6 0.7 Unit V mV µA ppm/°C mV Ω RKA Static Impedance ∆IK = 1mA to 15mA -40°C < Tamb < +85°C 0.3 KVH Long Term Stability IK = 100µA, t = 1000hrs 120 ppm EN Wide Band Noise IK = 100µA 100Hz < f < 10kHz 350 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 TS824-2.5 Reference voltage versus cathode current Reference voltage versus cathode current 3 Cathode voltage (V) Cathode voltage(V) 3 2 1 T=-40°C 2 T=+25°C T=+85°C 1 0 -1 -10 0 -5 0 5 10 15 0 20 Cathode current (mA) 40 60 80 100 Cathode current (µA) Test circuit Reference voltage versus Temperature i=0 R IK=(VIN -VREF)/R VOUT =VREF VIN Reference voltage (V) 2.52 2.51 2.50 2.49 2.48 -40 -20 0 20 40 60 80 Temperature (°C) ∆VK/∆IK for IK < 1mA versus temperature ∆VK/∆IK for IK > 1mA versus temperature 5 0.5 ∆ VK / ∆ IK IK MIN < IK < 1 mA 4 ∆ VK / ∆ IK (mV) ∆ VK / ∆ IK (mV) 0.4 0.3 0.2 0.1 0.0 -40 3 ∆ VK / ∆ IK 1 mA < IK < 15 mA 2 1 -20 0 20 40 Temperature (°C) 60 80 0 -40 -20 0 20 40 60 80 Temperature (°C) 3/5 TS824-2.5 Start-up response with low cathode current Start-up schematic with low cathode current 5 R Ik Overshoot Pulse Generator 2 Output 3 Intput Voltage (V) 4 1 0 0 5 10 15 20 Time (µs) Overshoot versus cathode current Noise versus frequency 20 500 T=+25°C TAMB= +25°C IK= 100µA Noise (nV/√ Hz) % of final value 400 15 10 300 200 5 100 0 100 150 200 Cathode current (µA) 4/5 250 300 0 100 1k Frequency (Hz) 10k 100k TS824-2.5 PACKAGE MECHANICAL DATA 3 PINS - TINY PACKAGE (SOT23-3) D k GAUGE PLANE e L E E1 L1 0.25 b c C e1 0.10 SEATING PLANE A1 A A2 C Millimeters Inches 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 0.400 0° Typ. 0.950 2.900 1.300 0.950 1.900 0.500 0.540 Max. Min. 1.120 0.100 1.020 0.500 0.200 3.040 2.640 1.400 0.035 0.0004 0.600 0.016 Typ. 0.037 0.012 0.003 0.110 0.083 0.047 0.114 0.051 0.037 0.075 0.020 0.021 Max. 0.044 0.004 0.040 0.020 0.008 0.120 0.104 0.055 0.024 8° 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. 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