THS10082

SLAS254B – MAY 2002 – REVISED NOVEMBER 2002

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17

Sample N

Channel 1

Sample N+1

Channel 1

Sample N+2

Channel 1

Sample N+3

Channel 1

Sample N+4

Channel 1

Sample N+5

Channel 1

Sample N+6

Channel 1

Sample N+7

Channel 1

Sample N+8

Channel 1

Data N–5

Channel 1

Data N–4

Channel 1

Data N–3

Channel 1

Data N–2

Channel 1

Data N–1

Channel 1

Data N

Channel 1

Data N+1

Channel 1

Data N+2

Channel 1

Data N+3

Channel 1

td(A)

tw(CONV_CLKH)

tw(CONV_CLKL)

tc

td(O)

td(DATA_AV)

td(DATA_AV)

AIN

CONV_CLK

Data Into

FIFO

DATA_AV,

Trigger Level = 1

DATA_AV,

Trigger Level = 4

td(pipe)

50%

50%

Figure 27. Timing of Continuous Conversion Mode (1-channel operation)

Figure 28 shows the timing of continuous conversion mode when two analog input channels are selected. The maximum

throughput rate per channel is 4 MSPS in this mode. The data flow in the bottom of the figure shows the order the converted

data is written into the FIFO. The timing of the DATA_AV signal shown here is for a trigger level set to 2 or 4.

AIN

CONV_CLK

Data Into

FIFO

DATA_AV,

Trigger Level = 2

DATA_AV,

Trigger Level = 4

Data N–3

Channel 2

Data N–2

Channel 1

Data N–2

Channel 2

Data N–1

Channel 1

Data N–1

Channel 2

Data N

Channel 1

Data N

Channel 2

Data N+1

Channel 1

Data N+1

Channel 2

td(DATA_AV)

tw(CONV_CLKH)

tw(CONV_CLKL)

td(A)

Sample N

Channel 1,2

Sample N+1

Channel 1,2

Sample N+2

Channel 1,2

Sample N+3

Channel 1,2

Sample N+4

Channel 1,2

tc

td(O)

td(Pipe)

td(DATA_AV)

50%

50%

Figure 28. Timing of Continuous Conversion Mode (2-Channel Operation)