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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC2990CMSTRPBF датащи(PDF) 22 Page - Linear Technology |
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LTC2990CMSTRPBF датащи(HTML) 22 Page - Linear Technology |
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22 / 24 page  LTC2990 2990f Typical applicaTions Oscillator/Reference Oven Temperature Regulation VCC V1 LTC2990 HEATERPWR = I •V 0.1 HEATER VOLTAGE 2-WIRE I2C INTERFACE 5V GND 470pF FEED FORWARD FEED BACK HEATER HEATER CONSTRUCTION: 5FT COIL OF #34 ENAMEL WIRE ~1.6 AT 70°C PHEATER = ~0.4W WITH TA = 20°C HEATER POWER = • (TSET – TAMB) + • ∫(TOVEN – TSET) dt 20°C AMBIENT STYROFOAM INSULATION 70°C OVEN TOVEN = 0.004W, = 0.00005W/DEG-s MMBT3904 SDA SCL ADR0 ADR1 V3 V4 V2 2990 TA10 TINTERNAL CURRENT AND TEMPERATURE CONFIGURATION: CONTROL REGISTER: 0x59 TAMB REG 4, 5 0.0625°C/LSB IHEATER REG 6, 7 269µVLSB THEATER REG A, B 0.0625°C/LSB VCC REG E, F 2.5V + 305.18µV/LSB VOLTAGE AND TEMPERATURE CONFIGURATION: CONTROL REGISTER: 0x58 TAMB REG 4, 5 0.0625°C/LSB V1, V2 REG 8, 9 305.18µVLSB TOVEN REG A, B 0.0625°C/LSB VCC REG E, F 2.5V + 305.18µV/LSB 0.1µF Wind Direction/Instrumentation VCC V1 LTC2990 3.3V µC GND 470pF MMBT3904 MMBT3904 SDA SCL ADR0 ADR1 V3 V4 V2 2990 TA11 470pF 3.3V HEATER 75 0.125W TINTERNAL CONTROL REGISTER: 0x5D TAMB REG 4, 5 0.0625°C/LSB TR1 REG 8, 9 0.0625°C/LSB TR2 REG A, B 0.0625°C/LSB VCC REG E, F 2.5V + 305.18µV/LSB 2N7002 FAN ENABLE 2 SECOND PULSE 0.1µF |
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