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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADN8835ACPZ-R7 датащи(PDF) 5 Page - Analog Devices |
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ADN8835ACPZ-R7 датащи(HTML) 5 Page - Analog Devices |
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5 / 27 page  Data Sheet ADN8835 Rev. B | Page 5 of 27 Parameter Symbol Test Conditions/Comments Min Typ Max Unit EN/SY Input Voltage Low VEN/SY_ILOW 0.8 V High VEN/SY_IHIGH 2.1 V External Synchronization Frequency fSYNC 1.85 3.25 MHz Synchronization Pulse Duty Cycle DSYNC 10 90 % EN/SY Rising to PWM Rising Delay tSYNC_PWM 50 ns EN/SY to PWM Lock Time tSY_LOCK Number of sync cycles 11 Cycles EN/SY Input Current IEN/SY 0.3 0.5 µA Pull-Down Current 0.3 0.5 µA ERROR/COMPENSATION AMPLIFIERS Input Offset Voltage VOS1 VCM1 = 1.5 V, VOS1 = VIN1P − VIN1N 10 100 µV VOS2 VCM2 = 1.5 V, VOS2 = VIN2P − VIN2N 10 100 µV Input Voltage Range VCM1, VCM2 0 VVDD V Common-Mode Rejection Ratio (CMRR) CMRR1, CMRR2 VCM1, VCM2 = 0.2 V to VVDD − 0.2 V 120 dB Output Voltage High VOH1, VOH2 VVDD − 0.04 V Low VOL1, VOL2 10 mV Power Supply Rejection Ratio (PSRR) PSRR1, PSRR2 120 dB Output Current IOUT1, IOUT2 Sourcing and sinking 5 mA Gain Bandwidth Product1 GBW1, GBW2 VOUT1, VOUT2 = 0.5 V to VVDD − 1 V 2 MHz TEC CURRENT LIMIT ILIM Input Voltage Range Cooling VILIMC 1.3 VVREF − 0.2 V Heating VILIMH 0.2 1.2 V Current-Limit Threshold Cooling VILIMC_TH VITEC = 0.5 V 1.98 2.0 2.02 V Heating VILIMH_TH VITEC = 2 V 0.48 0.5 0.52 V ILIM Input Current Heating IILIMH −0.2 +0.2 µA Cooling IILIMC Sourcing current 37.5 40 42.5 µA Cooling to Heating Current Detection Threshold ICOOL_HEAT_TH 40 mA TEC VOLTAGE LIMIT Voltage Limit Gain AVLIM (VDRL − VSFB)/VVLIM 2 V/V VLIM/SD Input Voltage Range1 VVLIMC, VVLIMH 0.2 VVDD/2 V VLIM/SD Input Current Cooling IILIMC VOUT2 < VVREF/2 −0.2 +0.2 µA Heating IILIMH VOUT2 > VVREF/2, sinking current 8 10 12 µA TEC CURRENT MEASUREMENT Current Sense Gain RCS 0.285 V/A Current Measurement Accuracy ILDR_ERROR 1 A ≤ ILDR ≤ 3 A 15 15 % ITEC Voltage Accuracy VITEC_AT_1_A Cooling, VVREF/2 + ILDR × RCS 1.493 1.535 1.577 V ITEC Voltage Output Range VITEC ITEC = 0 A 0 VVREF − 0.05 V ITEC Bias Voltage VITEC_B ILDR = 0 A 1.210 1.250 1.285 V Maximum ITEC Output Current IITEC −2 +2 mA TEC VOLTAGE MEASUREMENT Voltage Sense Gain AVTEC 0.24 0.25 0.26 V/V |
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