ADC14155HFEB/NOPB National Semiconductor, ADC14155HFEB/NOPB Datasheet - Page 18

• Manufacturer Part Number: ADC14155HFEB/NOPB
• Description: BOARD EVAL FOR ADC14155HF
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of ADC14155HFEB/NOPB

• Number Of Adc's: 1
• Number Of Bits: 14
• Sampling Rate (per Second): 155M
• Data Interface: Parallel
• Inputs Per Adc: 1 Differential
• Power (typ) @ Conditions: 967mW @ 155MSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: ADC14155
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADC14155HFEB

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to the ground plane will reduce this problem. Additionally, bus
capacitance beyond the specified 5 pF/pin will cause t
increase, reducing the setup and hold time of the ADC output
data. The result could be an apparent reduction in dynamic
performance.
To minimize noise due to output switching, the load currents
at the digital outputs should be minimized. This can be done
by using a programmable logic device (PLD) such as the
OD
to
18
LC4032V-25TN48C to level translate the ADC output data
from 1.8V to 3.3V for use by any other circuitry. Only one load
should be connected to each output pin. Additionally, insert-
ing series resistors of about 22Ω at the digital outputs, close
to the ADC pins, will isolate the outputs from trace and other
circuit capacitances and limit the output currents, which could
otherwise result in performance degradation. See Figure 4.