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LTC1850CFW датащи(PDF) 5 Page - Linear Technology |
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LTC1850CFW датащи(HTML) 5 Page - Linear Technology |
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5 / 28 page ![]() 5 LTC1850/LTC1851 18501f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS fSAMPLE(MAX) Maximum Sampling Frequency q 1.25 MHz Acquisition + Conversion q 800 ns tCONV Conversion Time q 650 ns tACQ Acquisition Time q 150 ns t1 CS to RD Setup Time (Notes 9, 10) q 0ns t2 CS to CONVST Setup Time (Notes 9, 10) q 10 ns t3 CS to SHDN Setup Time (Notes 9, 10) 200 ns t4 SHDN to CONVST Wake-Up Time Nap Mode (Note 10) 200 ns Sleep Mode, 10 µF REFCOMP 10 ms Bypass Capacitor (Note 10) t5 CONVST Low Time (Notes 10, 11) q 50 ns t6 CONVST to BUSY Delay CL = 25pF 10 ns q 60 ns t7 Data Ready Before BUSY 20 35 ns q 15 ns t8 Delay Between Conversions (Note 10) q 50 ns t9 Wait Time RD After BUSY q –5 ns t10 Data Access Time After RD CL = 25pF 20 35 ns q 45 ns CL = 100pF 25 45 ns q 60 ns t11 BUS Relinquish Time 10 30 ns 0 °C to 70°C q 35 ns –40 °C to 85°C q 40 ns t12 RD Low Time q t10 ns t13 CONVST High Time (Note 10) q 50 ns t14 Latch Setup Time (Notes 9, 10) q 10 ns t15 Latch Hold Time (Notes 9, 10) q 10 ns t16 WR Low Time (Note 10) q 50 ns The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) TI I G CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) POWER REQUIRE E TS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VDD Positive Supply Voltage (Note 10) q 4.75 5.25 V OVDD Output Positive Supply Voltage (Note 10) q 2.7 5.25 V IDD Positive Supply Current VDD = VDD = OVDD = 5V, q 810 mA fSAMPLE = 1.25MHz PDISS Power Dissipation q 40 50 mW Power Down Positive Supply Current Nap Mode SHDN = 0V, CS = 0V 1 mA Sleep Mode SHDN = 0V, CS = 5V 50 µA Power Down Power Dissipation Nap Mode SHDN = 0V, CS = 0V 5 mW Sleep Mode SHDN = 0V, CS = 5V 0.25 mW |
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