Datasheet LTC1852, LTC1853 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 8-Channel, 10-Bit/12-Bit, 400ksps, Low Power, Sampling ADCs |
| 页数 / 页 | 24 / 5 — POWER REQUIREMENTS. The. denotes the specifi cations which apply over the … |
| 文件格式/大小 | PDF / 246 Kb |
| 文件语言 | 英语 |
POWER REQUIREMENTS. The. denotes the specifi cations which apply over the full operating temperature
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LTC1852/LTC1853
POWER REQUIREMENTS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Analog Positive Supply Voltage (Note 10) ● 2.7 5.5 V OVDD Output Positive Supply Voltage (Note 10) ● 2.7 5.5 V IDD Positive Supply Current VDD = OVDD = 5V, fS = 400kHz ● 2 3 mA VDD = OVDD = 2.7V, fS = 250kHz ● 0.83 1.33 mA PDISS Power Dissipation VDD = OVDD = 5V, fS = 400kHz ● 10 15 mW VDD = OVDD = 2.7V, fS = 250kHz ● 2.25 4 mW IDDPD Power Down Positive Supply Current Nap Mode SHDN = Low, CS = Low 0.5 mA Sleep Mode SHDN = Low, CS = High 20 μA Power Down Power Dissipation VDD = VDD = OVDD = 5V, fS = 400kHz Nap Mode SHDN = Low, CS = Low 2.5 mW Sleep Mode SHDN = Low, CS = High 0.1 mW Power Down Power Dissipation VDD = VDD = OVDD = 3V, fS = 250kHz Nap Mode SHDN = Low, CS = Low 1.5 mW Sleep Mode SHDN = Low, CS = High 0.06 mW
TIMING CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSAMPLE(MAX) Maximum Sampling Frequency VDD = 5.5V ● 400 kHz VDD = 2.7V ● 250 kHz Acquisition + Conversion VDD = 5.5V ● 2.5 μs VDD = 2.7V ● 4.0 μs tCONV Conversion Time VDD = 5.5V ● 2.0 μs VDD = 2.7V ● 3.5 μs tACQ Acquisition Time (Note 13) ● 150 ns t1 CS to RD Setup Time (Notes 9, 10) ● 0 ns t2 CS to CONVST Setup Time (Notes 9, 10) ● 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 (Note 10) 10 ms t5 CONVST Low Time (Notes 10, 11) ● 50 ns t6 CONVST to BUSY Delay CL = 25pF 10 ns ● 60 ns t7 Data Ready Before BUSY 20 35 ns ● 15 ns t8 Delay Between Conversions (Note 10) ● 50 ns t9 Wait Time RD After BUSY ● –5 ns t10 Data Access Time After RD CL = 25pF 20 35 ns ● 45 ns CL = 100pF 25 45 ns ● 60 ns t11 BUS Relinquish Time 10 30 ns 0°C to 70°C ● 35 ns – 40°C to 85°C ● 40 ns t12 RD Low Time ● t10 ns 18523fa 5
POWER REQUIREMENTS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Analog Positive Supply Voltage (Note 10) ● 2.7 5.5 V OVDD Output Positive Supply Voltage (Note 10) ● 2.7 5.5 V IDD Positive Supply Current VDD = OVDD = 5V, fS = 400kHz ● 2 3 mA VDD = OVDD = 2.7V, fS = 250kHz ● 0.83 1.33 mA PDISS Power Dissipation VDD = OVDD = 5V, fS = 400kHz ● 10 15 mW VDD = OVDD = 2.7V, fS = 250kHz ● 2.25 4 mW IDDPD Power Down Positive Supply Current Nap Mode SHDN = Low, CS = Low 0.5 mA Sleep Mode SHDN = Low, CS = High 20 μA Power Down Power Dissipation VDD = VDD = OVDD = 5V, fS = 400kHz Nap Mode SHDN = Low, CS = Low 2.5 mW Sleep Mode SHDN = Low, CS = High 0.1 mW Power Down Power Dissipation VDD = VDD = OVDD = 3V, fS = 250kHz Nap Mode SHDN = Low, CS = Low 1.5 mW Sleep Mode SHDN = Low, CS = High 0.06 mW
TIMING CHARACTERISTICS The
●
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSAMPLE(MAX) Maximum Sampling Frequency VDD = 5.5V ● 400 kHz VDD = 2.7V ● 250 kHz Acquisition + Conversion VDD = 5.5V ● 2.5 μs VDD = 2.7V ● 4.0 μs tCONV Conversion Time VDD = 5.5V ● 2.0 μs VDD = 2.7V ● 3.5 μs tACQ Acquisition Time (Note 13) ● 150 ns t1 CS to RD Setup Time (Notes 9, 10) ● 0 ns t2 CS to CONVST Setup Time (Notes 9, 10) ● 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 (Note 10) 10 ms t5 CONVST Low Time (Notes 10, 11) ● 50 ns t6 CONVST to BUSY Delay CL = 25pF 10 ns ● 60 ns t7 Data Ready Before BUSY 20 35 ns ● 15 ns t8 Delay Between Conversions (Note 10) ● 50 ns t9 Wait Time RD After BUSY ● –5 ns t10 Data Access Time After RD CL = 25pF 20 35 ns ● 45 ns CL = 100pF 25 45 ns ● 60 ns t11 BUS Relinquish Time 10 30 ns 0°C to 70°C ● 35 ns – 40°C to 85°C ● 40 ns t12 RD Low Time ● t10 ns 18523fa 5