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LTC1597C Datasheet(PDF) 4 Page - Linear Technology |
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LTC1597C Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page 4 LTC1591/LTC1597 ELECTRICAL CHARACTERISTICS VCC = 5V ±10%, VREF = 10V, IOUT1 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Analog Outputs (Note 4) COUT Output Capacitance (Note 4) DAC Register Loaded to All 1s: COUT1 q 115 130 pF DAC Register Loaded to All 0s: COUT1 q 70 80 pF Digital Inputs VIH Digital Input High Voltage q 2.4 V VIL Digital Input Low Voltage q 0.8 V IIN Digital Input Current q 0.001 ±1 µA CIN Digital Input Capacitance (Note 4) VIN = 0V q 8pF Timing Characteristics tDS Data to WR Setup Time q 60 20 ns tDH Data to WR Hold Time q 0 –12 ns tWR WR Pulse Width q 60 25 ns tLD LD Pulse Width q 110 55 ns tCLR Clear Pulse Width q 60 40 ns tLWD WR to LD Delay Time q 0ns Power Supply VDD Supply Voltage q 4.5 5 5.5 V IDD Supply Current Digital Inputs = 0V or VCC q 10 µA The q denotes specifications that apply over the full operating temperature range. Note 1: Absolute Maximum Values are those beyond which the life of a device may be impaired. Note 2: ±1LSB = ±0.006% of full scale = ±61ppm of full scale for the LTC1591/LTC1591-1. ±1LSB = ±0.0015% of full scale = ±15.3ppm of full scale for the LTC1597/LTC1597-1. Note 3: Using internal feedback resistor. Note 4: Guaranteed by design, not subject to test. Note 5: I(OUT1) with DAC register loaded to all 0s. Note 6: Typical temperature coefficient is 100ppm/ °C. Note 7: IOUT1 load = 100Ω in parallel with 13pF. Note 8: To 0.006% for a full-scale change, measured from the rising edge of LD for the LTC1591/LTC1591-1. To 0.0015% for a full-scale change, measured from the rising edge of LD for the LTC1597/LTC1597-1. Note 9: VREF = 0V. DAC register contents changed from all 0s to all 1s or all 1s to all 0s. Note 10: VREF = 6VRMS at 1kHz. DAC register loaded with all 1s. Note 11: Calculation from en = √4kTRB where: k = Boltzmann constant (J/ °K), R = resistance (Ω), T = temperature (°K), B = bandwidth (Hz). Note 12: Midscale transition code: 01 1111 1111 1111 to 10 0000 0000 0000 for the LTC1591/LTC1591-1 and 0111 1111 1111 1111 to 1000 0000 0000 0000 for the LTC1597/LTC1597-1. Note 13: R1 and R2 are measured between R1 and RCOM, REF and RCOM. Note 14: Measured using the LT1468 op amp in unipolar mode for I/V converter and LT1468 I/V and LT1001 reference inverter in bipolar mode. Sample Rate = 50kHz, Signal Frequency = 1kHz, VREF = 5V, TA = 25°C. |
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