Datasheet ADN8831 (Analog Devices) - 9

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Data Sheet ADN8831 TYPICAL PERFORMANCE CHARACTERISTICS 360 SYNCI/SD = 1MHz TA = 25°C 300 VDD = 3V ) IV 240 rees) /D eg SPGATE SNGATE (1V (D E T 180 G IF A H T L S E O V 120 T HAS A = 25°C P VDD = 5V 60
07 004 0 3- 3- 66 0466 04
0 10ns/DIV 0 0.4 0.8 1.2 1.6 2.0 2.4 VPHASE (V)
Figure 4. SPGATE and SNGATE Rise Time Using Circuit Shown Figure 12 Figure 7. Clock Phase Shift vs. Phase Voltage
2.485 VDD = 5V 2.480 IV) D SNGATE SPGATE ) (1V/ V E ( G F 2.475 A RE T V L VO TA = 25°C V 2.470 DD = 5V
005 008 3- 3- 66 66 04 04
2.465 10ns/DIV –40 –15 10 35 60 85 TEMPERATURE (°C)
Figure 5. SNGATE and SPGATE Fall Time Using Circuit Shown in Figure 12 Figure 8. VREF vs. Temperature
360 1000 SYNCI/SD = 1MHz T VDD = 5V A = 25°C T 300 V A = 25°C DD = 5V z) 800 (kH 240 rees) eg NCY E 600 (D U T Q 180 IF H RE F S E 400 NG 120 HAS CHI P IT W S 200 60
06 0 009 3- 66 63- 04
0
046
0 0 0.4 0.8 1.2 1.6 2.0 2.4 0 250 500 750 1000 VPHASE (V) R FREQ (kΩ)
Figure 6. Clock Phase Shift vs. Phase Voltage Figure 9. Switching Frequency vs. RFREQ Rev. C | Page 9 of 18 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM REVISION HISTORY DETAILED BLOCK DIAGRAM SPECIFICATIONS ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OSCILLATOR CLOCK FREQUENCY Free-Run Operation External Clock Operation Connecting Multiple ADN8831 Devices OSCILLATOR CLOCK PHASE TEMPERATURE LOCK INDICATOR SOFT START ON POWER-UP SHUTDOWN MODE STANDBY MODE TEC VOLTAGE/CURRENT MONITOR Voltage Monitor Current Monitor MAXIMUM TEC VOLTAGE LIMIT Using a DAC Using a Resistor Divider MAXIMUM TEC CURRENT LIMIT APPLICATIONS INFORMATION SIGNAL FLOW THERMISTOR SETUP THERMISTOR AMPLIFIER (Chop1) PID COMPENSATION AMPLIFIER (Chop2) MOSFET DRIVER AMPLIFIER OUTLINE DIMENSIONS ORDERING GUIDE