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LTC2662 Datasheet(PDF) 6 Page - Analog Devices |
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LTC2662 Datasheet(HTML) 6 Page - Analog Devices |
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6 / 28 page  LTC2662 6 Rev 0 For more information www.analog.com REFERENCE CHARACTERISTICS The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TJ = 25°C. VCC = IOVCC = 5V; V– = –5V; VDD0-4 = 5V, V+ = 5V, FSADJ = VCC unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VREF Reference Output Voltage 1.248 1.25 1.252 V VREF Temperature Coefficient (Note 7) ±3 ±10 ppm/°C VREF Line Regulation VCC = 5V ±10% 50 µV/V VREF Short-Circuit Current VCC = 5.5V, Forcing Output to GND 2.5 mA REFCOMP Pin Short-Circuit Current VCC = 5.5V, Forcing Output to GND 65 µA VREF Load Regulation VCC = 5V ±10%, IREF = 100µA Sourcing 140 mV/mA VREF Output Voltage Noise Density CREFCOMP = CREF = 0.1µF, at f = 10kHz 32 nV/√Hz VREF Input Voltage Range External Reference Mode l 1.225 1.275 V VREF Input Current External Reference Mode l 0.001 1 µA VREF Input Capacitance (Note 8) 40 pF RFSADJ External Full-Scale Adjust Gain Resistor RFSADJ to GND l 19 20 50 kΩ DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TJ = 25°C. VCC = IOVCC = 5V; V– = –5V; VDD0-4 = 5V, V+ = 5V, FSADJ = VCC unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Digital I/O VOH Digital Output High Voltage SDO Pin, Load Current = –100µA l IOVCC – 0.2 V VOL Digital Output Low Voltage SDO Pin, Load Current = 100µA FAULT Pin, Load Current = 100µA l l 0.2 0.2 V V Digital Hi-Z Output Leakage Current SDO Pin Leakage Current (CS/LD High) FAULT Pin Leakage Current (Not Asserted) l l ±1 1 µA µA Digital Input Current VIN = GND to IOVCC l ±1 μA CIN Digital Input Capacitance (Note 8) l 8 pF IOVCC = 2.85 to VCC VIH High Level Input Voltage l 0.8 • IOVCC V VIL Low Level Input Voltage l 0.5 V IOVCC = 1.71V to 2.85V VIH High Level Input Voltage l 0.8 • IOVCC V VIL Low Level Input Voltage l 0.5 V |
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