LTC6957-1/LTC6957-2/ LTC6957-3/LTC6957-4 ELECTRICAL CHARACTERISTICS LTC6957-3/LTC6957-4The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.V+ = VDD = 3.3V, SD1 = SD2 = 0.4V, FILTA = FILTB = 0.4V, RLOAD = 480Ω to VDD/2, unless otherwise specified. All voltages are withrespect to ground. SYMBOL PARAMETERCONDITIONSMINTYPMAXUNITSInputs (IN–, IN+) fIN Input Frequency Range l 300 MHz VINSE Input Signal Level Range, Single-Ended l 0.2 0.8 2 VP-P VINDIFF Input Signal Level Range, Differential l 0.2 0.8 2 VP-P tMIN Minimum Input Pulse Width High or Low 0.6 ns VINCM Self-Bias Voltage, IN+, IN– l 1.8 2 2.3 V RIN Input Resistance, Differential l 1.5 2 2.5 kΩ CIN Input Capacitance, Differential 0.5 pF BWIN Input Section Small Signal Bandwidth FILTB = L, FILTA = L 1200 MHz FILTB = L, FILTA = H 500 MHz FILTB = H, FILTA = L 160 MHz FILTB = H, FILTA = H 50 MHz Outputs (CMOS) VOH Output High Voltage No Load l VDD – 0.1 V –3mA Load l VDD – 0.2 V VOL Output Low Voltage No Load l 0.1 V 3mA Load l 0.2 V tr Output Rise Time 320 ps tf Output Fall Time 300 ps tPD Propagation Delay FILTB = L, FILTA = L l 0.8 0.95 1.6 ns FILTB = L, FILTA = H l 1 1.8 ns FILTB = H, FILTA = L l 1.5 2.4 ns FILTB = H, FILTA = H l 3.6 4.8 ns ∆tPD/∆T Propagation Delay Variation Over Temperature FILTB = L, FILTA = L l 1.7 ps/°C FILTB = L, FILTA = H l 1.7 ps/°C FILTB = H, FILTA = L l 2 ps/°C FILTB = H, FILTA = H l 3 ps/°C ∆tPD/∆V Propagation Delay Variation vs Supply Voltage FILTB = FILTA = L, V+ = VDD l 100 200 ps/V tSKEW Output Skew, CH1 to CH2 LTC6957-3 l 5 35 ps LTC6957-4 l 120 250 ps Power V+ V+ Operating Supply Voltage Range l 3.15 3.3 3.45 V VDD VDD Operating Supply Voltage Range VDD Must Be ≤V+ l 2.4 3.3 3.45 V IS Supply Current, Pin 2 Both Outputs Enabled (SD1 = SD2 = L) l 24 27.5 mA One Output Enabled (SD1 = L, SD2 = H or SD1 = H, SD2 = L) l 24 27.5 mA Both Outputs Disabled (SD1 = SD2 = H) l 0.7 1.2 mA IDD Supply Current, Pin 11, No Load Static l 0.001 0.01 mA Dynamic, per Output l 0.056 0.07 mA/MHz tENABLE Output Enable Time, Other SDx = L 200 ns tWAKEUP Output Enable Time, Other SDx = H 300 ns tDISABLE Output Disable Time, Other SDx = L 20 ns tSLEEP Output Disable Time, Other SDx = H 20 ns 6957fb 8 For more information www.linear.com/LTC6957-1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagrams Timing Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts