Datasheet

THS1206
SLAS217H – MAY 1999 – REVISED JULY 2003#
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19
Figure 27 shows the timing of continuous conversion mode when three analog input channels are selected. The maximum
throughput rate per channel is 2 MSPS in this mode. The data flow in the bottom of the figure shows in which 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 3.
AIN
CONV_CLK
Data Into
FIFO
DATA_AV,
Trigger Level = 3
t
d(DATA_AV)
Sample N
Channel 1,2,3
Sample N+1
Channel 1,2,3
Sample N+2
Channel 1,2,3
t
d(O)
Data N–2
Channel 2
Data N–2
Channel 3
Data N–1
Channel 2
Data N–1
Channel 2
Data N–1
Channel 3
Data N
Channel 1
Data N
Channel 2
Data N+1
Channel 3
t
c
t
d(A)
t
w(CONV_CLKH)
t
w(CONV_CLKL)
t
d(Pipe)
50% 50%
Figure 27. Timing of Continuous Conversion Mode (3-channel operation)
Figure 28 shows the timing of continuous conversion mode when four analog input channels are selected. The maximum
throughput rate per channel is 1.5 MSPS in this mode. The data flow in the bottom of the figure shows in which order the
converted data is written into the FIFO. The timing of the DATA_AV signal shown here is for a trigger level of 4.
AIN
CONV_CLK
Data Into
FIFO
DATA_AV,
Trigger Level = 4
t
w(CONV_CLKH)
Sample N
Channel 1,2,3,4
Sample N+1
Channel 1,2,3,4
Sample N+2
Channel 1,2,3,4
t
d(Pipe)
t
w(CONV_CLKL)
t
c
t
d(O)
Data N–2
Channel 4
Data N–1
Channel 1
Data N–1
Channel 2
Data N–1
Channel 3
Data N–1
Channel 4
Data N
Channel 1
Data N
Channel 2
Data N
Channel 3
Data N
Channel 4
t
d(DATA_AV)
t
d(A)
50% 50%
Figure 28. Timing of Continuous Conversion Mode (4-channel operation)