Datasheet LTC6902 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Multiphase Oscillator with Spread Spectrum Frequency Modulation |
| Pages / Page | 16 / 3 — ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 213 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LTC6902
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. V+ = 2.7V to 5.5V, RL= 5k, CL = 5pF, Pin 3 (PH) = 0V (2-phase, M = 1) unless otherwise specified. Pin 9 (MOD) is at 0V unless otherwise specified. RSET is defined as a resistor connected from the SET pin to the V+ pin. RMOD is defined as a resistor connected from the MOD pin to the V+ pin. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V+ Operating Supply Range ● 2.7 5.5 V IS Power Supply Current RSET = 400k, RL = ∞, Pin 2 = V+ (N = 100), fOUT = 5kHz V+ = 5V ● 0.35 0.55 mA V+ = 2.7V ● 0.32 0.50 mA RSET = 20k, RL = ∞, Pin 2 = 0V (N = 1), fOUT = 10MHz V+ = 5V ● 2.35 3.50 mA V+ = 2.7V ● 1.40 1.80 mA RSET = 400k, RL = ∞, Pin 2 = V+ (N = 100), RMOD = 800k V+ = 5V ● 0.45 0.63 mA V+ = 2.7V ● 0.34 0.50 mA RSET = 20k, RL = ∞, Pin 2 = 0V (N = 1), RMOD = 40k V+ = 5V ● 2.50 3.60 mA V+ = 2.7V ● 1.40 1.90 mA VIH_DIV High Level DIV Input Voltage ● V+ – 0.4 V VIL_DIV Low Level DIV Input Voltage ● 0.4 V IDIV DIV Input Current (Note 6) Pin 2 = V+, V+ = 5V ● 2 4 µA Pin 2 = 0V, V+ = 5V ● – 4 – 2 µA VIH_PH High Level PH Input Voltage ● V+ – 0.4 V VIL_PH Low Level PH Input Voltage ● 0.4 V IPH PH Input Currrent (Note 6) Pin 3 = V+, V+ = 5V ● 2 4 µA Pin 3 = 0V, V+ = 5V ● –4 –2 µA VOH High Level Output Voltage (Note 6) V+ = 5V IOH = – 1mA ● 4.75 4.90 V (OUT1, OUT2, OUT3, OUT4) IOH = – 4mA ● 4.40 4.70 V V+ = 2.7V IOH = – 1mA ● 2.35 2.6 V IOH = – 4mA ● 1.85 2.2 V VOL Low Level Output Voltage (Note 6) V+ = 5V IOL = 1mA ● 0.05 0.15 V (OUT1, OUT2, OUT3, OUT4) IOL = 4mA ● 0.20 0.40 V V+ = 2.7V IOL = 1mA ● 0.1 0.3 V IOL = 4mA ● 0.4 0.7 V tr Output Rise Time (Note 7) V+ = 5V Pin 2 = V+ or Open (N = 100 or N = 10) 14 ns (OUT1, OUT2, OUT3, OUT4) Pin 2 = 0V (N = 1) 7 ns V+ = 2.7V Pin 2 = V+ or Open (N = 100 or N = 10) 19 ns Pin 2 = 0V (N = 1) 11 ns tf Output Fall Time (Note 7) V+ = 5V Pin 2 = V+ or Open (N = 100 or N = 10) 13 ns (OUT1, OUT2, OUT3, OUT4) Pin 2 = 0V (N = 1) 6 ns V+ = 2.7V Pin 2 = V+ or Open (N = 100 or N = 10) 19 ns Pin 2 = 0V (N = 1) 10 ns Spread Spectrum Frequency V+ = 5V, N = 10, RSET = 20k, RMOD = 10k ● 35 40 45.0 % Modulation Spreading Percentage V+ = 5V, N = 10, RSET = 20k, RMOD = 40k ● 7.5 10 12.5 % (Downspread from Maximum V+ = 2.7V, N = 10, RSET = 20k, RMOD = 10k ● 35 40 45.0 % Frequency) V+ = 2.7V, N = 10, RSET = 20k, RMOD = 40k ● 7.5 10 12.5 % Percent = 100 • (fMAX – fMIN)/fMAX (Note 8) 6902f 3
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. V+ = 2.7V to 5.5V, RL= 5k, CL = 5pF, Pin 3 (PH) = 0V (2-phase, M = 1) unless otherwise specified. Pin 9 (MOD) is at 0V unless otherwise specified. RSET is defined as a resistor connected from the SET pin to the V+ pin. RMOD is defined as a resistor connected from the MOD pin to the V+ pin. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V+ Operating Supply Range ● 2.7 5.5 V IS Power Supply Current RSET = 400k, RL = ∞, Pin 2 = V+ (N = 100), fOUT = 5kHz V+ = 5V ● 0.35 0.55 mA V+ = 2.7V ● 0.32 0.50 mA RSET = 20k, RL = ∞, Pin 2 = 0V (N = 1), fOUT = 10MHz V+ = 5V ● 2.35 3.50 mA V+ = 2.7V ● 1.40 1.80 mA RSET = 400k, RL = ∞, Pin 2 = V+ (N = 100), RMOD = 800k V+ = 5V ● 0.45 0.63 mA V+ = 2.7V ● 0.34 0.50 mA RSET = 20k, RL = ∞, Pin 2 = 0V (N = 1), RMOD = 40k V+ = 5V ● 2.50 3.60 mA V+ = 2.7V ● 1.40 1.90 mA VIH_DIV High Level DIV Input Voltage ● V+ – 0.4 V VIL_DIV Low Level DIV Input Voltage ● 0.4 V IDIV DIV Input Current (Note 6) Pin 2 = V+, V+ = 5V ● 2 4 µA Pin 2 = 0V, V+ = 5V ● – 4 – 2 µA VIH_PH High Level PH Input Voltage ● V+ – 0.4 V VIL_PH Low Level PH Input Voltage ● 0.4 V IPH PH Input Currrent (Note 6) Pin 3 = V+, V+ = 5V ● 2 4 µA Pin 3 = 0V, V+ = 5V ● –4 –2 µA VOH High Level Output Voltage (Note 6) V+ = 5V IOH = – 1mA ● 4.75 4.90 V (OUT1, OUT2, OUT3, OUT4) IOH = – 4mA ● 4.40 4.70 V V+ = 2.7V IOH = – 1mA ● 2.35 2.6 V IOH = – 4mA ● 1.85 2.2 V VOL Low Level Output Voltage (Note 6) V+ = 5V IOL = 1mA ● 0.05 0.15 V (OUT1, OUT2, OUT3, OUT4) IOL = 4mA ● 0.20 0.40 V V+ = 2.7V IOL = 1mA ● 0.1 0.3 V IOL = 4mA ● 0.4 0.7 V tr Output Rise Time (Note 7) V+ = 5V Pin 2 = V+ or Open (N = 100 or N = 10) 14 ns (OUT1, OUT2, OUT3, OUT4) Pin 2 = 0V (N = 1) 7 ns V+ = 2.7V Pin 2 = V+ or Open (N = 100 or N = 10) 19 ns Pin 2 = 0V (N = 1) 11 ns tf Output Fall Time (Note 7) V+ = 5V Pin 2 = V+ or Open (N = 100 or N = 10) 13 ns (OUT1, OUT2, OUT3, OUT4) Pin 2 = 0V (N = 1) 6 ns V+ = 2.7V Pin 2 = V+ or Open (N = 100 or N = 10) 19 ns Pin 2 = 0V (N = 1) 10 ns Spread Spectrum Frequency V+ = 5V, N = 10, RSET = 20k, RMOD = 10k ● 35 40 45.0 % Modulation Spreading Percentage V+ = 5V, N = 10, RSET = 20k, RMOD = 40k ● 7.5 10 12.5 % (Downspread from Maximum V+ = 2.7V, N = 10, RSET = 20k, RMOD = 10k ● 35 40 45.0 % Frequency) V+ = 2.7V, N = 10, RSET = 20k, RMOD = 40k ● 7.5 10 12.5 % Percent = 100 • (fMAX – fMIN)/fMAX (Note 8) 6902f 3
