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LTC1650CS Datenblatt(PDF) 4 Page - Linear Technology |
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LTC1650CS Datenblatt(HTML) 4 Page - Linear Technology |
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4 / 12 page ![]() 4 LTC1650 ELECTRICAL CHARACTERISTICS AVDD = 4.75V to 5.25V, AVSS = – 4.75V to – 5.25V, DVDD = 4.75V to 5.25V, REFLO = 0V, REFHI = 4.096V, VOUT unloaded, TA = TMIN to TMAX unless otherwise noted. Note 4: To ±1LSB. Unipolar mode. DAC switched between all 1s and all 0s. Note 5: Digital Inputs at 0V or DVDD. Note 6: Measured at VOUT. REFHI = REFLO = 0V, unipolar mode. Note 7: When part powers up or when it is reset, the output is connected to VRST through this switch. Note 8: Reset is active when any supply goes below this threshold. Note 9: REFLO = 0V, REFHI = VREF. For REFLO ≠ 0V see Operation section. The q denotes specifications which apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Nonlinearity is defined from code 0 to code 65535 (full scale) (end point INL, see Definitions section). Note 3: Guaranteed by design. Not subject to test. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Digital I/O Characteristics VIH Digital Input High Voltage q 2.4 V VIL Digital Input Low Voltage q 0.8 V VOH Digital Output High Voltage IOUT = –1mA, DOUT Only q VCC – 1.0 V VOL Digital Output Low Voltage IOUT = 1mA, DOUT Only q 0.4 V ILK Digital Input Leakage VIN = GND to VCC q ±10 µA CIN Digital Input Capacitance (Note 3) 10 pF Reset Characteristics RON VOUT and VRST Switch Resistance VRST = 0.5V (Note 7) q 200 500 Ω Threshold Voltage for Reset AVDD or DVDD (Note 8) q 1.5 2.5 3.2 V AVSS(Note 8) q 1.5 2.5 3.2 V Switching Characteristics t1 DIN Valid to CLK Setup q 40 ns t2 DIN Valid to CLK Hold q 0ns t3 CLK High Time (Note 3) q 40 ns t4 CLK Low Time (Note 3) q 40 ns t5 CS/LD Pulse Width (Note 3) q 50 ns t6 LSB CLK to CS/LD (Note 3) q 40 ns t7 CS/LD Low to CLK (Note 3) q 20 ns t8 DOUT Output Delay CLOAD = 100pF q 5 45 150 ns t9 CLK Low to CS/LD Low (Note 3) q 20 ns t10 CLR Pulse Width q 50 ns |
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