TS822

TS822 2.5V micropower shunt voltage reference Features ■ ■ ■ 2.50V typical output voltage Ultra low current consumption: 40µA typ. High precision @ 25°C – ±2% (standard version) – ±1% (A grade) High stability when used with capacitive loads Industrial temperature range: -40°C to +85°C 100ppm/°C maximum temperature coefficient Pin connections (Top view) L SOT23-3L (Plastic micropackage) ■ ■ ■ Applications ■ ■ ■ ■ ■ Computers Instrumentation Battery chargers Switch mode power supply Battery operated equipment Description The TS822 is a low power shunt voltage reference providing a stable 2.5V output voltage over the industrial temperature range (-40°C to +85°C). Availabe in SOT23-3 surface mount package, it can be designed in applications where space saving is critical. The low operating current is a key advantage for power restricted designs. In addition, the TS822 is very stable and can be used in a broad range of application conditions. August 2007 Rev 2 1/9 www.st.com 9 Absolute maximum ratings and operating conditions TS822 1 Absolute maximum ratings and operating conditions Table 1. Symbol Ik If Pd Tstg ESD Machine model (MM) Tlead Absolute maximum ratings Parameter Reverse breakdown current Forward current Power dissipation (1) Value 20 10 Unit mA mA mW °C kV V °C SOT23-3 360 -65 to +150 2 200 260 Storage temperature Human body model (HBM)(2) (3) Lead temperature (soldering, 10 seconds) 1. Pd is calculated with Tamb = 25°C and Rthja = 340°C/W for the SOT23-3L package 2. Human body model: 100pF discharged through a 1.5kΩ resistor between two pins of the device, done for all couples of pin combinations with other pins floating. 3. Machine model: a 200pF cap is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5Ω), done for all couples of pin combinations with other pins floating. Table 2. Symbol Ik-min Ik-max Toper Operating conditions Parameter Minimum operating current Maximum operating current Operating free air temperature range Value 50 15 -40 to +85 Unit μA mA °C 2/9 TS822 Electrical characteristics 2 Table 3. Symbol Electrical characteristics TS822 (2% precision) Tamb = 25°C(1) (unless otherwise specified) Parameter Reverse breakdown voltage Vk Reverse breakdown voltage tolerance Test conditions Ik = 100μA Ik = 100μA -40°C < Tamb < +85°C T = 25°C Ik-min Minimum operating current -40°C < Tamb < +85°C Average temperature coefficient Ik = 100μA Ik-min < Ik < 1mA -40°C < Tamb < +85°C 1mA < Ik < 15mA -40°C < Tamb < +85°C Ik = Ik-min to 1mA -40°C < Tamb < +85°C Ik = 1 to 15mA -40°C < Tamb < +85°C Long term stability Wide band noise Ik = 100μA, t = 1000hrs Ik = 100μA, 10Hz < f < 10kHz 30 0.4 2.5 0.4 0.2 120 35 60 100 1 1.2 mV 8 10 1 1.2 0.6 0.7 Min. 2.45 -50 -66 40 Typ. 2.5 Max. 2.55 50 66 50 Unit V mV μA ppm/°C ΔVref/ΔT ΔVk/ΔIk Reverse breakdown voltage change with operating current range Rka Reverse static impedance Ω Kvh En ppm nV/√ Hz 1. Limits are 100% production tested at 25°C. Behavior at temperature range limits is guaranteed by correlation and design. Table 4. Symbol TS822A (1% precision) Tamb = 25°C(1) (unless otherwise specified) Parameter Reverse breakdown voltage Test conditions Ik = 100μA Ik = 100μA -40°C < Tamb < +85°C T = 25°C Min. 2.475 -25 -41 40 Typ. 2.5 Max. 2.525 25 41 50 60 30 0.4 2.5 0.4 0.2 120 35 100 1 1.2 mV 8 10 1 1.2 0.6 0.7 Unit V mV μA ppm/°C Vk Reverse breakdown voltage tolerance Ik-min ΔVref/ΔT Minimum operating current -40°C < Tamb < +85°C Average temperature coefficient Ik = 100μA Ik-min < Ik < 1mA -40°C < Tamb < +85°C 1mA < Ik < 15mA -40°C < Tamb < +85°C Ik = Ik-min to 1mA -40°C < Tamb < +85°C Ik = 1mA to 15mA -40°C < Tamb < +85°C Long term stability Wide band noise Ik = 100μA, t = 1000hrs Ik = 100μA, 10Hz < f < 10kHz ΔVk/ΔIk Reverse breakdown voltage change with operating current range Rka Reverse static impedance Ω Kvh En ppm nV/√ Hz 1. Limits are 100% production tested at 25°C. Behavior at temperature range limits is guaranteed by correlation and design. 3/9 Electrical characteristics TS822 Figure 1. Reference voltage versus cathode current Figure 2. Minimum operating current Reference voltage versus cathode current 15 3 2.5 Minimum operating current Cathode current (mA) 10 Cathode voltage (V) T=+25°C 2 1.5 1 0.5 5 T=+85°C T=-40°C 0 -5 -0.5 0 0.5 1 1.5 2 2.5 Cathode voltage (V) 0 0 20 Cathode current (µA) 40 Figure 3. Test circuit Figure 4. Reference voltage versus temperature Reference voltage versus Temperature Test circuit 2.56 +2% +1% R Cathode voltage (V) 2.54 2.52 2.5 2.48 2.46 2.44 -40 -20 0 Ik=(Vin-Vref)/R Vout=Vref Vin -1% -2% 20 40 60 80 Temperature (°C) Figure 5. Static impedance (Rka) versus temperature Static impedance (Rka) versus temperature Figure 6. Noise voltage versus frequency Noise voltage versus Frequency 1500 Noise voltage (nV/VHz) CL=100µF CL=10µF 1000 CL=1µF 500 CL=100nF CL=0 0 1000.0 100.0 Frequency (KHz) 0.2 Static impedance (Ohms) 0.15 0.1 0.05 0 -40 -20 0 20 40 60 80 0.1 1.0 10.0 Temperature (°C) 4/9 TS822 Electrical characteristics Figure 7. Test circuit for pulse response at Ik=100µA Figure 8. Pulse response for Ik=100µA Pulse response for Ik=100µA Test circuit for pulse response at Ik=100µA 25k ohm Ik=100µA 5 Input Output Intput Pulse Generator 0 2.5 Output 0 0 5 10 Time (µs) 15 20 Figure 9. Pulse response for Ik=100µA (detailed part) Pulse response for Ik=100µA Detailed part 5V Input Figure 10. Pulse response for Ik=100µA (detailed part) Pulse response for Ik=100µA Detailed part 5V Input 0V Output 0V 0 0.5 1 Time (µs) 1.5 2 2.5V 2.5V Output 0V 0V 0 1 2 3 4 5 Time (µs) Figure 11. Test circuit for pulse response at Ik=100mA Figure 12. Pulse response for Ik=100mA Pulse response for Ik=1mA Test circuit for pulse response at Ik=1mA 5V 2.5k ohm Ik=1mA Input Output Intput Pulse Generator 0V 2.5V 0V Output 0 1 2 3 4 5 Time (µs) 5/9 Package information TS822 Figure 13. Pulse response for Ik=100mA (detailed part) Pulse response for Ik=1mA Detailed part 5V Input Figure 14. Pulse response for Ik=100mA (detailed part) Pulse response for Ik=1mA Detailed part 5V Input 0V Output 0V 0 50 100 Time (ns) 150 200 2.5V 2.5V Output 0V 0V 0 0.2 0.4 0.6 Time (µs) 0.8 1 3 Package information In order to meet environmental requirements, STMicroelectronics offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. 6/9 TS822 Figure 15. SOT23-3 package mechanical data Dimensions Ref. Min. A A1 A2 b C D E E1 e e1 L L1 k 0° 0.400 0.540 8° 0° 0.890 0.010 0.880 0.300 0.080 2.800 2.100 1.200 1.300 0.950 1.900 0.600 15.75 2.900 0.950 Millimeters Typ. Max. 1.120 0.100 1.020 0.500 0.200 3.040 2.64 1.400 Min. 35.05 0.39 34.65 11.81 3.15 110.26 82.70 47.26 Package information Mils Typ. Max. 44.12 3.94 37.41 40.17 19.69 7.88 114.17 119.72 103.96 51.19 37.41 74.82 23.63 21.27 8° 55.13 7110469/A 7/9 Ordering information TS822 4 Ordering information Table 5. Order codes Precision 2% -40°C to +85°C TS822AILT 1% SOT23-3 Tape & reel L222 Temperature range Package Packing Marking L223 Part number TS822ILT 5 Revision history Table 6. Date 21-Mar-2002 20-Aug-2007 Document revision history Revision 1 2 Initial release. Removed information related to TO-92 package. Format update. Changes 8/9 TS822 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. 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