ADC16DV160CILQ/NOPB National Semiconductor, ADC16DV160CILQ/NOPB Datasheet - Page 24

• Manufacturer Part Number: ADC16DV160CILQ/NOPB
• Description: ADC 16BIT DUAL 160MSPS 68LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of ADC16DV160CILQ/NOPB

• Number Of Bits: 16
• Sampling Rate (per Second): 160M
• Data Interface: Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 1.47W
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 68-VFQFN, Exposed Pad
• Leaded Process Compatible: Yes
• Rohs Compliant: Yes
• Peak Reflow Compatible (260 C): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADC16DV160CILQ

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10.0 SAMPLING EDGE
The internal clock divider features allows more flexible design
from the perspective of the system clocking scheme. The
ADC16DV160 supports divide by 1 or 2 clocking. This feature
may cause a potential issue when synchronizing the sample
edge of multiple ADCs when the internal clock is divided by 2
from the input clock (CLKIN). The ADC16DV160 samples the
analog input signal at the falling edge of the input clock, which
will be the falling edge of the internally divided by 2 clock when
divide by 2 is configured as shown as dashed lines in
FIGURE 18. Fixed Pattern at ADC Output with Default SPI Register Values
FIGURE 17. State Machine Generating Fixed Pattern Sequence
FIGURE 19. Sampling Edge of Multiple ADCs with
Internal Division On
Figure
24
19
nals and/or input clock between multiple ADCs with this clock-
ing configuration, the sampling edge of some ADC, which is
ADC SLAVE I for this example, could be out of phase com-
pared to the ADC MASTER as shown in
sampling edge of the non-synchronized ADC can be syn-
chronized if the internal clock can be inverted through some
control bit. This sampling edge flipping function is provided by
the ADC16DV160 via SPI. See the SPI Register Map below
for the details.
below. If there is some timing skew of the SPI control sig-
30101454
30101455
30101456
Figure
19. The