AD6654BBC Analog Devices Inc, AD6654BBC Datasheet - Page 37

• Manufacturer Part Number: AD6654BBC
• Description: IC ADC 14BIT W/6CH RSP 256CSPBGA
• Manufacturer: Analog Devices Inc

Specifications of AD6654BBC

• Number Of Bits: 14
• Sampling Rate (per Second): 92.16M
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 2.5W
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 256-CSPBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

EXAMPLE CALCULATIONS
Goal: Implement a filter with an input sample rate of 100 MHz
requiring 100 dB of alias rejection for a ±1.4 MHz pass band.
Solution: First determine the percentage of the sample rate that
is represented by the pass band.
BW
FRACTION
=
100
×
1
100
4 .
MHz
MHz
=
1
4 .
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In the −100 dB column in Table 15, find the value greater than
or equal to the pass-band percentage of the clock rate. Then
find the corresponding rate decimation factor (M
M
1.48%, which is slightly larger than the 1.4% calculated.
Therefore, for this example, the maximum bound on CIC
decimation rate is 6. A higher M
than the 100 dB required.
CIC
of 6, the frequency that has −100 dB of alias rejection is
CIC
means less alias rejection
CIC
). For an
AD6654