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MAX1302AEUG+ Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX1302AEUG+ Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 31 page 8-Channel, ±VREF Multirange Inputs, Serial 16-Bit ADC 6 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VAVDD1 = VAVDD2 = VDVDD = VDVDDO = 5V, VAGND1 = VDGND = VDGNDO = VAGND2 = VAGND3 = 0V, fCLK = 3.5MHz (50% duty cycle), external clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (±VREF), CDOUT = 50pF, CSSTRB = 50pF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CS Rise to DOUT Disable tTR 40 ns CS Fall to SCLK Rise Setup tCSS 40 ns CS High Minimum Pulse Width tCSPW 40 ns SCLK Fall to CS Rise Hold tCSH 0ns SSTRB Rise to CS Fall Setup (Note 4) 40 ns DOUT Rise/Fall Time CL = 50pF 10 ns SSTRB Rise/Fall Time CL = 50pF 10 ns Note 1: Parameter tested at VAVDD1 = VAVDD2 = VDVDD = VDVDDO = 5V. Note 2: See definitions in the Parameter Definitions section at the end of the data sheet. Note 3: Guaranteed by correlation with single-ended measurements. Note 4: Not production tested. Guaranteed by design. Note 5: To ensure external reference operation, VREFCAP must exceed (VAVDD1 - 0.1V). To ensure internal reference operation, VREFCAP must be below (VAVDD1 - 0.4V). Bypassing REFCAP with a 0.1µF or larger capacitor to AGND1 sets VREFCAP ≈ 4.096V. The tran- sition point between internal reference mode and external reference mode lies between the REFCAP buffer disable threshold minimum and maximum values (Figures 17 and 18). Note 6: The SCLK duty cycle can vary between 40% and 60%, as long as the tCL and tCH timing requirements are met. ANALOG SUPPLY CURRENT vs. ANALOG SUPPLY VOLTAGE VAVDD1 (V) 5.15 5.05 4.95 4.85 2.35 2.40 2.45 2.50 2.55 2.60 2.30 4.75 5.25 TA = +85 °C TA = +25 °C TA = -40 °C EXTERNAL CLOCK MODE PREAMPLIFIER SUPPLY CURRENT vs. PREAMPLIFIER SUPPLY VOLTAGE VAVDD2 (V) 5.15 5.05 4.85 4.95 16 17 18 19 20 21 22 23 24 15 4.75 5.25 TA = +85 °C TA = +25 °C TA = -40 °C EXTERNAL CLOCK MODE DIGITAL SUPPLY CURRENT vs. DIGITAL SUPPLY VOLTAGE VDVDD (V) 5.15 5.05 4.95 4.85 0.70 0.75 0.80 0.85 0.90 0.65 4.75 5.25 TA = +85 °C TA = +25 °C TA = -40 °C EXTERNAL CLOCK MODE Typical Operating Characteristics (VAVDD1 = VAVDD2 = VDVDD = VDVDDO = 5V, VAGND1 = VDGND = VDGNDO = VAGND2 = VAGND3 = 0V, fCLK = 3.5MHz (50% duty cycle), external clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (±VREF), CDOUT = 50pF, CSSTRB = 50pF, unless otherwise noted.) |
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