Datasheet LTC1292, LTC1297 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | Single Chip 12-Bit Data Acquisition Systems |
| Páginas / Página | 24 / 3 — AC CHARACTERISTICS The. denotes the specifications which apply over the … |
| Formato / tamaño de archivo | PDF / 325 Kb |
| Idioma del documento | Inglés |
AC CHARACTERISTICS The. denotes the specifications which apply over the full operating temperature range,
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LTC1292/LTC1297
AC CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) LTC1292B/LTC1297B LTC1292C/LTC1297C LTC1292D/LTC1297D SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fCLK Clock Frequency VCC = 5V (Note 6) (Note 9) 1.0 MHz tSMPL Analog Input Sample Time See Operating Sequence LTC1292 1.5CLK LTC1297 0.5CLK+5.5µs tCONV Conversion Time See Operating Sequence 12 CLK Cycles tCYC Total Cycle Time See Operating Sequence LTC1292 14CLK+2.5µs (Note 6) LTC1297 14CLK+6µs tdDO Delay Time, CLK↓ to DOUT Data Valid See Test Circuits ● 160 300 ns tdis Delay Time, CS↑ to DOUT Hi-Z See Test Circuits ● 80 150 ns ten Delay Time, CLK↓ to DOUT Enabled See Test Circuits ● 80 200 ns thDO Time Output Data Remains Valid After CLK↓ 130 ns tf DOUT Fall Time See Test Circuits ● 65 130 ns tr DOUT Rise Time See Test Circuits ● 25 50 ns tWHCLK CLK High Time VCC = 5V (Note 6) 300 ns tWLCLK CLK Low Time VCC = 5V (Note 6) 400 ns tsuCS Setup Time, CS↓ Before CLK↑ VCC = 5V (Note 6) LTC1292 50 ns (LTC1297 Wakeup Time) LTC1297 5.5 µs tWHCS CS High Time Between Data Transfer Cycles VCC = 5V (Note 6) LTC1292 2.5 µs LTC1297 0.5 µs tWLCS CS Low Time During Data Transfer VCC = 5V (Note 6) LTC1292 14CLK LTC1297 14CLK+ 5.5µs CIN Input Capacitance Analog Inputs On Channel 100 pF Analog Inputs Off Channel 5 pF Digital Inputs 5 pF
U DIGITAL A D DC ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) LTC1292B/LTC1297B LTC1292C/LTC1297C LTC1292D/LTC1297D SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VCC = 5.25V ● 2.0 V VIL Low Level Input Voltage VCC = 4.75V ● 0.8 V IIH High Level Input Current VIN = VCC ● 2.5 µA IIL Low Level Input Current VIN = 0V ● –2.5 µA VOH High Level Output Voltage VCC = 4.75V, IO = –10µA 4.7 V IO = 360µA ● 2.4 4.0 V VOL Low Level Output Voltage VCC = 4.75V, IO = 1.6mA ● 0.4 V IOZ High Z Output Leakage VOUT = VCC, CS High ● 3 µA VOUT = 0V, CS High ● –3 µA ISOURCE Output Source Current VOUT = 0V –20 mA ISINK Output Sink Current VOUT = VCC 20 mA 12927fb 3
AC CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) LTC1292B/LTC1297B LTC1292C/LTC1297C LTC1292D/LTC1297D SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fCLK Clock Frequency VCC = 5V (Note 6) (Note 9) 1.0 MHz tSMPL Analog Input Sample Time See Operating Sequence LTC1292 1.5CLK LTC1297 0.5CLK+5.5µs tCONV Conversion Time See Operating Sequence 12 CLK Cycles tCYC Total Cycle Time See Operating Sequence LTC1292 14CLK+2.5µs (Note 6) LTC1297 14CLK+6µs tdDO Delay Time, CLK↓ to DOUT Data Valid See Test Circuits ● 160 300 ns tdis Delay Time, CS↑ to DOUT Hi-Z See Test Circuits ● 80 150 ns ten Delay Time, CLK↓ to DOUT Enabled See Test Circuits ● 80 200 ns thDO Time Output Data Remains Valid After CLK↓ 130 ns tf DOUT Fall Time See Test Circuits ● 65 130 ns tr DOUT Rise Time See Test Circuits ● 25 50 ns tWHCLK CLK High Time VCC = 5V (Note 6) 300 ns tWLCLK CLK Low Time VCC = 5V (Note 6) 400 ns tsuCS Setup Time, CS↓ Before CLK↑ VCC = 5V (Note 6) LTC1292 50 ns (LTC1297 Wakeup Time) LTC1297 5.5 µs tWHCS CS High Time Between Data Transfer Cycles VCC = 5V (Note 6) LTC1292 2.5 µs LTC1297 0.5 µs tWLCS CS Low Time During Data Transfer VCC = 5V (Note 6) LTC1292 14CLK LTC1297 14CLK+ 5.5µs CIN Input Capacitance Analog Inputs On Channel 100 pF Analog Inputs Off Channel 5 pF Digital Inputs 5 pF
U DIGITAL A D DC ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. (Note 3) LTC1292B/LTC1297B LTC1292C/LTC1297C LTC1292D/LTC1297D SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage VCC = 5.25V ● 2.0 V VIL Low Level Input Voltage VCC = 4.75V ● 0.8 V IIH High Level Input Current VIN = VCC ● 2.5 µA IIL Low Level Input Current VIN = 0V ● –2.5 µA VOH High Level Output Voltage VCC = 4.75V, IO = –10µA 4.7 V IO = 360µA ● 2.4 4.0 V VOL Low Level Output Voltage VCC = 4.75V, IO = 1.6mA ● 0.4 V IOZ High Z Output Leakage VOUT = VCC, CS High ● 3 µA VOUT = 0V, CS High ● –3 µA ISOURCE Output Source Current VOUT = 0V –20 mA ISINK Output Sink Current VOUT = VCC 20 mA 12927fb 3