Datasheet LTC1278 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | 12-Bit, 500ksps Sampling A/D Converter with Shutdown |
| Seiten / Seite | 16 / 4 — W U. POWER REQUIRE E TS (Note 5). LTC1278-4/LTC1278-5. SYMBOL. PARAMETER. … |
| Dateiformat / Größe | PDF / 290 Kb |
| Dokumentensprache | Englisch |
W U. POWER REQUIRE E TS (Note 5). LTC1278-4/LTC1278-5. SYMBOL. PARAMETER. CONDITIONS. MIN. TYP. MAX. UNITS. TI I G CHARACTERISTICS (Note 5)
Modelllinie für dieses Datenblatt
- LTC1278-4CN#PBF LTC1278-4CSW#PBF LTC1278-4CSW#TRPBF LTC1278-4IN#PBF LTC1278-4ISW#PBF LTC1278-4ISW#TRPBF LTC1278-5CSW#PBF LTC1278-5CSW#TRPBF LTC1278-5ISW#PBF LTC1278-5ISW#TRPBF
Textversion des Dokuments
LTC1278
W U POWER REQUIRE E TS (Note 5) LTC1278-4/LTC1278-5 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Positive Supply Voltage (Notes 10, 11) Unipolar 4.95 5.25 V Bipolar 4.75 5.25 V VSS Negative Supply Voltage (Note 10) Bipolar Only – 2.45 – 5.25 V IDD Positive Supply Current fSAMPLE = 500ksps ● 15.0 29.5 mA SHDN = 0V ● 1.7 3.0 mA ISS Negative Supply Current fSAMPLE = 500ksps, VSS = – 5V ● 0.12 0.30 mA PD Power Dissipation fSAMPLE = 500ksps ● 75.0 150 mW SHDN = 0V ● 8.5 15 mW
W U TI I G CHARACTERISTICS (Note 5) LTC1278-4/LTC1278-5 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSAMPLE(MAX) Maximum Sampling Frequency LTC1278-4 ● 400 kHz LTC1278-5 ● 500 tSAMPLE(MIN) Minimum Throughput Time LTC1278-4 ● 2.5 µs (Acquisition Time Plus Conversion Time) LTC1278-5 ● 2.0 µs tCONV Conversion Time LTC1278-4 2.0 2.3 µs LTC1278-5 1.6 1.85 µs tACQ Acquisition Time 200 ns t1 CS↓ to RD↓ Setup Time (Notes 9, 10) ● 0 ns t2 CS↓ to CONVST↓ Setup Time (Notes 9, 10) ● 20 ns t3 SHDN↑ to CONVST↓ Wake-Up Time (Note 10) 350 ns t4 CONVST Low Time (Notes 10, 12) ● 40 ns t5 CONVST↓ to BUSY↓ Delay CL = 100pF 40 110 ns Commercial ● 130 ns Industrial ● 140 ns t6 Data Ready Before BUSY↑ CL = 100pF ● 20 40 ns t7 Wait Time RD↓ After BUSY↑ Mode 2, (see Figure 14) (Note 9) ● – 20 ns t8 Data Access Time After RD↓ CL = 20pF (Note 9) 50 90 ns Commercial ● 110 ns Industrial ● 120 ns CL = 100pF 70 125 ns Commercial ● 150 ns Industrial ● 170 ns t9 Bus Relinquish Time 20 30 75 ns Commercial ● 20 85 ns Industrial ● 20 90 ns t10 RD Low Time (Note 9) ● t8 ns t11 CONVST High Time (Notes 9, 12) ● 40 ns t12 Aperture Delay of Sample-and-Hold Jitter < 50ps 15 ns 4
W U POWER REQUIRE E TS (Note 5) LTC1278-4/LTC1278-5 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Positive Supply Voltage (Notes 10, 11) Unipolar 4.95 5.25 V Bipolar 4.75 5.25 V VSS Negative Supply Voltage (Note 10) Bipolar Only – 2.45 – 5.25 V IDD Positive Supply Current fSAMPLE = 500ksps ● 15.0 29.5 mA SHDN = 0V ● 1.7 3.0 mA ISS Negative Supply Current fSAMPLE = 500ksps, VSS = – 5V ● 0.12 0.30 mA PD Power Dissipation fSAMPLE = 500ksps ● 75.0 150 mW SHDN = 0V ● 8.5 15 mW
W U TI I G CHARACTERISTICS (Note 5) LTC1278-4/LTC1278-5 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fSAMPLE(MAX) Maximum Sampling Frequency LTC1278-4 ● 400 kHz LTC1278-5 ● 500 tSAMPLE(MIN) Minimum Throughput Time LTC1278-4 ● 2.5 µs (Acquisition Time Plus Conversion Time) LTC1278-5 ● 2.0 µs tCONV Conversion Time LTC1278-4 2.0 2.3 µs LTC1278-5 1.6 1.85 µs tACQ Acquisition Time 200 ns t1 CS↓ to RD↓ Setup Time (Notes 9, 10) ● 0 ns t2 CS↓ to CONVST↓ Setup Time (Notes 9, 10) ● 20 ns t3 SHDN↑ to CONVST↓ Wake-Up Time (Note 10) 350 ns t4 CONVST Low Time (Notes 10, 12) ● 40 ns t5 CONVST↓ to BUSY↓ Delay CL = 100pF 40 110 ns Commercial ● 130 ns Industrial ● 140 ns t6 Data Ready Before BUSY↑ CL = 100pF ● 20 40 ns t7 Wait Time RD↓ After BUSY↑ Mode 2, (see Figure 14) (Note 9) ● – 20 ns t8 Data Access Time After RD↓ CL = 20pF (Note 9) 50 90 ns Commercial ● 110 ns Industrial ● 120 ns CL = 100pF 70 125 ns Commercial ● 150 ns Industrial ● 170 ns t9 Bus Relinquish Time 20 30 75 ns Commercial ● 20 85 ns Industrial ● 20 90 ns t10 RD Low Time (Note 9) ● t8 ns t11 CONVST High Time (Notes 9, 12) ● 40 ns t12 Aperture Delay of Sample-and-Hold Jitter < 50ps 15 ns 4