THS1206DA datasheet(12/41 Pages) TI

12 / 41 page

THS1206

12-BIT 6 MSPS, SIMULTANEOUS SAMPLING

ANALOG-TO-DIGITAL CONVERTERS

SLAS217D – MAY 1999 – REVISED APRIL 2000

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

continuous conversion mode (continued)

Figure 4 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

td(DATA_AV)

Sample N

Channel 1,2,3

Sample N+1

Channel 1,2,3

Sample N+2

Channel 1,2,3

td(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

td(A)

tw(CONV_CLKH)

tw(CONV_CLKL)

td(Pipe)

50%

Figure 4. Timing of Continuous Conversion Mode (3-channel operation)

Figure 5 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

tw(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

td(Pipe)

tw(CONV_CLKL)

td(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

td(DATA_AV)

td(A)

50%

Figure 5. Timing of Continuous Conversion Mode (4-channel operation)

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