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LTC2640 Datasheet(PDF) 8 Page - Linear Technology |
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LTC2640 Datasheet(HTML) 8 Page - Linear Technology |
8 / 24 page LTC2640 8 2640fb ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V, VOUT unloaded unless otherwise specified. LTC2640-HM12/-HM10/-HM8/-HZ12/-HZ10/-HZ8, LTC2640A-HM12/-HZ12 (VFS = 4.096V) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT DAC Output Span External Reference Internal Reference 0 to VREF 0 to 4.096 V V PSR Power Supply Rejection VCC = 5V ±10% –80 dB ISC Short-Circuit Output Current (Note 6) Sinking Sourcing VFS = VCC = 5.5V Zero-Scale; VOUT shorted to VCC Full-Scale; VOUT shorted to GND l l 27 –28 48 –48 mA mA Power Supply VCC Positive Supply Voltage For Specified Performance l 4.5 5.5 V ICC Supply Current (Note 7) VCC = 5V, VREF = 4.096V, External Reference VCC = 5V, Internal Reference l l 160 200 220 270 μA μA ISD Supply Current in Power-Down Mode (Note 7) VCC = 5V, C-Grade, I-Grade VCC = 5V, H-Grade l l 0.6 0.6 1.8 4 μA μA Reference Input Input Voltage Range l 0VCC V Resistance l 160 190 220 kΩ Capacitance 7.5 pF IREF Reference Current, Power-Down Mode DAC Powered Down l 0.005 0.1 μA Reference Output Output Voltage l 2.032 2.048 2.064 V Reference Temperature Coefficient ±10 ppm/°C Output Impedance 0.5 kΩ Capacitive Load Driving 10 μF Short-Circuit Current VCC = 5.5V; REF Shorted to GND 4.3 mA Digital I/O VIH Digital Input High Voltage l 2.4 V VIL Digital Input Low Voltage l 0.8 V ILK Digital Input Leakage VIN = GND to VCC l ±1 μA CIN Digital Input Capacitance (Note 8) l 2.5 pF AC Performance tS Settling Time VCC = 5V (Note 9) ±0.39% (±1LSB at 8 Bits) ±0.098% (±1LSB at 10 Bits) ±0.024% (±1LSB at 12 Bits) 3.7 4.2 4.6 μs μs μs Voltage Output Slew Rate 1 V/μs Capacitance Load Driving 500 pF Glitch Impulse At Mid-Scale Transition 3.0 nV•s Multiplying Bandwidth External Reference 300 kHz |
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