Datasheet LTC2446, LTC2447 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 24-Bit High Speed 8-Channel ∆Σ ADCs with Selectable Multiple Reference Inputs |
| 页数 / 页 | 30 / 4 — DIGITAL INPUTS AND DIGITAL OUTPUTS. The. denotes the specifications which … |
| 文件格式/大小 | PDF / 619 Kb |
| 文件语言 | 英语 |
DIGITAL INPUTS AND DIGITAL OUTPUTS. The. denotes the specifications which apply over the
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LTC2446/LTC2447
DIGITAL INPUTS AND DIGITAL OUTPUTS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 2.5 V CS, FO, SDI VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 0.8 V CS, FO, SDI VIH High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 2.5 V SCK VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 0.8 V SCK IIN Digital Input Current 0V ≤ VIN ≤ VCC l –10 10 µA CS, FO, EXT, SDI IIN Digital Input Current 0V ≤ VIN ≤ VCC (Note 8) l –10 10 µA SCK CIN Digital Input Capacitance 10 pF CS, FO, SDI CIN Digital Input Capacitance (Note 8) 10 pF SCK VOH High Level Output Voltage IO = –800µA l VCC – 0.5V V SDO, BUSY VOL Low Level Output Voltage IO = 1.6mA l 0.4 V SDO, BUSY VOH High Level Output Voltage IO = –800µA (Note 9) l VCC – 0.5V V SCK VOL Low Level Output Voltage IO = 1.6mA (Note 9) l 0.4 V SCK IOZ Hi-Z Output Leakage l –10 10 µA SDO
POWER REQUIREMENTS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Supply Voltage l 4.5 5.5 V ICC Supply Current Conversion Mode CS = 0V (Note 7) l 8 11 mA Sleep Mode CS = VCC (Note 7) l 8 30 µA
TIMING CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fEOSC External Oscillator Frequency Range l 0.1 12 MHz tHEO External Oscillator High Period l 25 10000 ns tLEO External Oscillator Low Period l 25 10000 ns tCONV Conversion Time OSR = 256 l 0.99 1.13 1.33 ms OSR = 32768 l 126 145 170 ms External Oscillator, 1× Mode l 40 • OSR + 178 ms (Notes 10, 13) fEOSC (KHz) f ISCK Internal SCK Frequency Internal Oscillator (Note 9) l 0.8 0.9 1 MHz External Oscillator (Notes 9, 10) fEOSC/10 Hz 24467fb 4 For more information www.linear.com/LTC2446 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuit Timing Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
DIGITAL INPUTS AND DIGITAL OUTPUTS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIH High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 2.5 V CS, FO, SDI VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V l 0.8 V CS, FO, SDI VIH High Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 2.5 V SCK VIL Low Level Input Voltage 4.5V ≤ VCC ≤ 5.5V (Note 8) l 0.8 V SCK IIN Digital Input Current 0V ≤ VIN ≤ VCC l –10 10 µA CS, FO, EXT, SDI IIN Digital Input Current 0V ≤ VIN ≤ VCC (Note 8) l –10 10 µA SCK CIN Digital Input Capacitance 10 pF CS, FO, SDI CIN Digital Input Capacitance (Note 8) 10 pF SCK VOH High Level Output Voltage IO = –800µA l VCC – 0.5V V SDO, BUSY VOL Low Level Output Voltage IO = 1.6mA l 0.4 V SDO, BUSY VOH High Level Output Voltage IO = –800µA (Note 9) l VCC – 0.5V V SCK VOL Low Level Output Voltage IO = 1.6mA (Note 9) l 0.4 V SCK IOZ Hi-Z Output Leakage l –10 10 µA SDO
POWER REQUIREMENTS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VCC Supply Voltage l 4.5 5.5 V ICC Supply Current Conversion Mode CS = 0V (Note 7) l 8 11 mA Sleep Mode CS = VCC (Note 7) l 8 30 µA
TIMING CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
fEOSC External Oscillator Frequency Range l 0.1 12 MHz tHEO External Oscillator High Period l 25 10000 ns tLEO External Oscillator Low Period l 25 10000 ns tCONV Conversion Time OSR = 256 l 0.99 1.13 1.33 ms OSR = 32768 l 126 145 170 ms External Oscillator, 1× Mode l 40 • OSR + 178 ms (Notes 10, 13) fEOSC (KHz) f ISCK Internal SCK Frequency Internal Oscillator (Note 9) l 0.8 0.9 1 MHz External Oscillator (Notes 9, 10) fEOSC/10 Hz 24467fb 4 For more information www.linear.com/LTC2446 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuit Timing Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts