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LTC2636 Datasheet(PDF) 6 Page - Linear Technology |
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LTC2636 Datasheet(HTML) 6 Page - Linear Technology |
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6 / 28 page  LTC2668 6 2668fa For more information www.linear.com/LTC2668 electrical characteristics timing characteristics The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AVP = 5V, OVP = 5V, V+ = 15V, V– = –15V, VREF = 2.5V, VOUT unloaded unless otherwise specified. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. Digital input low and high voltages are 0V and OVP, respectively. LTC2668-16/LTC2668-12 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS AVP = 4.5V to 5.5V, OVP = 2.7V to AVP t1 SDI Valid to SCK Setup l 6 ns t2 SDI Valid to SCK Hold l 6 ns t3 SCK HIGH Time l 9 ns t4 SCK LOW Time l 9 ns t5 CS/LD Pulse Width l 10 ns t6 LSB SCK High to CS/LD High l 7 ns t7 CS/LD Low to SCK High l 7 ns t8 SDO Propagation Delay from SCK Falling Edge CLOAD = 10pF OVP = 4.5V to AVP OVP = 2.7V to 4.5V l l 20 30 ns ns t9 CLR Pulse Width l 20 ns t10 CS/LD High to SCK Positive Edge l 7 ns t12 LDAC Pulse Width l 15 ns t13 CS/LD High to LDAC High or Low Transition l 15 ns SCK Frequency 50% Duty Cycle l 50 MHz t14 TGP High Time (Note 9) l 1 µs t15 TGP Low Time (Note 9) l 1 µs SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Digital I/O VOH Digital Output High Voltage SDO Pin. Load Current = –100µA l OVP – 0.2 V VOL Digital Output Low Voltage SDO Pin. Load Current = 100µA OVRTMP Pin. Load Current = 100µA l l 0.2 0.2 V V IOZ Digital Hi-Z Output Leakage SDO Pin Leakage Current (CS/LD High) OVRTMP Pin Leakage Current (Not Asserted) l l ±1 1 µA µA ILK Digital Input Leakage VIN = GND to OVP l ±1 µA CIN Digital Input Capacitance (Note 9) l 8 pF OVP = 2.7V to AVP VIH Digital Input High Voltage l 0.8 • OVP V VIL Digital Input Low Voltage l 0.5 V OVP = 1.71V to 2.7V VIH Digital Input High Voltage l 0.8 • OVP V VIL Digital Input Low Voltage l 0.3 V |
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