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MAX1178BCUP Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX1178BCUP Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 14 page 16-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued) (Typical Operating Circuit, AVDD = DVDD = +5V, external reference = +4.096V, CREF = 10µF, CREFADJ = 0.1µF, VREFADJ = AVDD, CLOAD = 20pF. Typical values are at TA = +25°C, unless otherwise noted.) SINAD vs. FREQUENCY FREQUENCY (kHz) 10 10 20 30 40 50 60 70 80 90 100 0 1100 fSAMPLE = 131ksps SFDR vs. FREQUENCY FREQUENCY (kHz) 10 20 40 60 80 100 120 0 1100 fSAMPLE = 131ksps THD vs. FREQUENCY FREQUENCY (kHz) 10 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 -110 1100 fSAMPLE = 131ksps Pin Description PIN NAME FUNCTION 1 D4/D12 Tri-State Digital-Data Output 2 D5/D13 Tri-State Digital-Data Output 3 D6/D14 Tri-State Digital-Data Output 4 D7/D15 Tri-State Digital-Data Output. D15 is the MSB. 5R/ C Read/Convert Input. Power up and put the MAX1178/MAX1188 in acquisition mode by holding R/ C low during the first falling edge of CS. During the second falling edge of CS, the level on R/C determines whether the reference and reference buffer power down or remain on after conversion. Set R/ C high during the second falling edge of CS to power down the reference and buffer, or set R/C low to leave the reference and buffer powered up. Set R/ C high during the third falling edge of CS to put valid data on the bus. 6 EOC End of Conversion. EOC drives low when conversion is complete. 7AVDD Analog Supply Input. Bypass with a 0.1µF capacitor to AGND. 8 AGND Analog Ground. Primary analog ground (star ground). 9 AIN Analog Input 10 AGND Analog Ground. Connect pin 10 to pin 8. 11 REFADJ Reference Buffer Output. Bypass REFADJ with a 0.1µF capacitor to AGND for internal reference mode. Connect REFADJ to AVDD to select external reference mode. 12 REF Reference Input/Output. Bypass REF with a 10µF capacitor to AGND for internal reference mode. External reference input when in external reference mode. |
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