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LTC1197I Datasheet(PDF) 6 Page - Linear Technology |
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LTC1197I Datasheet(HTML) 6 Page - Linear Technology |
6 / 28 page 6 LTC1197/LTC1197L LTC1199/LTC1199L AC CHARACTERISTICS VCC = 5V, VREF = 5V, fCLK = fCLK(MAX) as defined in Recommended Operating Conditions, unless otherwise noted. LTC1197 LTC1199 SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS tCONV Conversion Time (See Figures 1, 2) q 1.4 1.4 µs fSMPL(MAX) Maximum Sampling Frequency q 500 450 kHz tdDO Delay Time, CLK ↑ to DOUT Data Valid CLOAD = 20pF 68 78 68 78 ns q 100 100 ns tdis Delay Time, CS ↑ to DOUT Hi-Z q 75 150 75 150 ns ten Delay Time, CLK ↓ to DOUT Enabled CLOAD = 20pF q 40 68 40 68 ns thDO Time Output Data Remains CLOAD = 20pF q 25 55 25 55 ns Valid After CLK ↑ tr DOUT Rise Time CLOAD = 20pF q 10 20 10 20 ns tf DOUT Fall Time CLOAD = 20pF q 10 20 10 20 ns CIN Input Capacitance Analog Input On Channel 20 20 pF Analog Input Off Channel 5 5 pF Digital Input 5 5 pF LTC1197L LTC1199L SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS tCONV Conversion Time (See Figures 1, 2) q 2.9 2.9 µs fSMPL(MAX) Maximum Sampling Frequency q 250 210 kHz tdDO Delay Time, CLK ↑ to DOUT Data Valid CLOAD = 20pF 130 180 130 180 ns q 250 250 ns tdis Delay Time, CS ↑ to DOUT Hi-Z q 120 250 120 250 ns ten Delay Time, CLK ↓ to DOUT Enabled CLOAD = 20pF q 100 200 100 200 ns thDO Time Output Data Remains CLOAD = 20pF q 45 120 45 120 ns Valid After CLK ↑ tr DOUT Rise Time CLOAD = 20pF q 15 40 15 40 ns tf DOUT Fall Time CLOAD = 20pF q 15 40 15 40 ns CIN Input Capacitance Analog Input On Channel 20 20 pF Analog Input Off Channel 5 5 pF Digital Input 5 5 pF VCC = 2.7V, VREF = 2.5V, fCLK = fCLK(MAX) as defined in Recommended Operating Conditions, unless otherwise noted. 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: All voltage values are with respect to GND. Note 3: Integral nonlinearity is defined as deviation of a code from a straight line passing through the actual endpoints of the transfer curve. The deviation is measured from the center of the quantization band. Note 4: Channel leakage current is measured after the channel selection. |
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