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MAX1248AEEE Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX1248AEEE Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 24 page +2.7V to +5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16 _______________________________________________________________________________________ 5 TIMING CHARACTERISTICS (VDD = +2.7V to +5.25V, TA = TMIN to TMAX, unless otherwise noted.) Note 1: Tested at VDD = 2.7V; COM = 0V; unipolar single-ended input mode. Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has been calibrated. Note 3: MAX1248—internal reference, offset nulled; MAX1249 — external reference (VREF = +2.500V), offset nulled. Note 4: Ground “on” channel; sine wave applied to all “off” channels. Note 5: Conversion time defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle. Note 6: The common-mode range for the analog inputs is from AGND to VDD. Note 7 Sample tested to 0.1% AQL. Note 8: External load should not change during conversion for specified accuracy. Note 9: ADC performance is limited by the converter’s noise floor, typically 300µVp-p. Note 10 Guaranteed by design. Not subject to production testing. Note 11: The MAX1249 typically draws 400 µA less than the values shown. Note 12: Measured as |V FS(2.7V) - VFS(5.25V)|. DIN to SCLK Setup ns 240 tSTR CS Rise to SSTRB Output Disable ns 240 tSDV CS Fall to SSTRB Output Enable 240 tSSTRB SCLK Fall to SSTRB ns 200 tCL SCLK Pulse Width Low ns 200 SCLK Pulse Width High ns 0 CS to SCLK Rise Hold ns 100 tCSS CS to SCLK Rise Setup ns 240 tTR CS Rise to Output Disable ns 240 tDV CS Fall to Output Enable tDO SCLK Fall to Output Data Valid ns 0 tDH DIN to SCLK Hold ns µs 1.5 tACQ Acquisition Time 0 tSCK SSTRB Rise to SCLK Rise ns 100 tDS UNITS MIN TYP MAX SYMBOL PARAMETER Internal clock mode only (Note 10) External clock mode only, Figure 2 External clock mode only, Figure 1 Figure 1 Figure 2 Figure 1 CONDITIONS ns 20 240 Figure 1 tCSH tCH ns MAX124_ _C/E MAX124_ _M 20 200 |
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