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MAX1157ACUI Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX1157ACUI Datasheet(HTML) 4 Page - Maxim Integrated Products |
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4 / 15 page  14-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range 4 _______________________________________________________________________________________ Note 1: Maximum specification is limited by automated test equipment. Note 2: To ensure best performance, finish reading the data and wait tBR before starting a new acquisition. ELECTRICAL CHARACTERISTICS (continued) (AVDD = DVDD = +5V ±5%, external reference = +4.096V, CREF = 10µF, CREFADJ = 0.1µF, VREFADJ = AVDD, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLIES Analog Supply Voltage AVDD 4.75 5.25 V Digital Supply Voltage DVDD 2.70 5.25 V MAX1157 2.9 External reference, 135ksps MAX1159/MAX1175 4.0 5.3 MAX1157 3.8 Analog Supply Current IAVDD Internal reference, 135ksps MAX1159/MAX1175 5.2 6.2 mA Shutdown mode (Note 1), digital input = DVDD or 0V 0.5 5 µA Shutdown Supply Current ISHDN Standby mode 3.7 mA Digital Supply Current IDVDD 0.75 mA Power-Supply Rejection AVDD = DVDD = +4.75V to +5.25V 1 LSB TIMING CHARACTERISTICS (Figures 1 and 2) (AVDD = +4.75V to +5.25V, DVDD = +2.7V to AVDD, external reference = +4.096V, CREF = 10µF, CREFADJ = 0.1µF, VREFADJ = AVDD, CLOAD = 20pF, TA = TMIN to TMAX.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Maximum Sampling Rate fSAMPLE-MAX 135 ksps Acquisition Time tACQ 2µs Conversion Time tCONV 4.7 µs CS Pulse Width High tCSH (Note 2) 40 ns DVDD = +4.75V to +5.25V 40 CS Pulse Width Low tCSL (Note 2) DVDD = +2.7V to +5.25V 60 ns R/C to CS Fall Setup Time tDS 0ns DVDD = +4.75V to +5.25V 40 R/C to CS Fall Hold Time tDH DVDD = +2.7V to +5.25V 60 ns DVDD = +4.75V to +5.25V 40 CS to Output Data Valid tDO DVDD = +2.7V to +5.25V 80 ns EOC Fall to CS Fall tDV 0ns DVDD = +4.75V to +5.25V 40 CS Rise to EOC Rise tEOC DVDD = +2.7V to +5.25V 80 ns DVDD = +4.75V to +5.25V 40 Bus Relinquish Time tBR DVDD = +2.7V to +5.25V 80 ns |
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