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BUSY

BUSY

BUSY

CONVST_QUAL

tquiet1

tquiet2

tquiet3

Quiet Zones

tsu2

th2

CS

No Read Zone (CS Initiated)

tsu3

th8

CS

FS

No Read Zone (FS Initiated)

CONVERSION AND SAMPLING

CS

CONVST

CONVST_QUAL

(Device Internal)

DEVICE STATE

BUSY

tw2

tsu2

th1

td4

tquiet2

tsu1

tsu4

td1

tquiet1

tquiet2

tquiet1

td2

SAMPLE

CONVERT

SAMPLE

tCONV

tacq1

tquiet3

ADS8370

SLAS450 – JUNE 2005

Figure 40. Quiet Zones and No-Read Zones

1. Convert start command:

The device enters the conversion phase from the sampling phase when a falling edge is detected on

CONVST_QUAL. This is shown in Figure 41, Figure 42, and Figure 43.

2. Sample (acquisition) start command:

The device starts sampling from the wait state or at the end of a conversion if CONVST_QUAL is detected

as high and CS as low. This is shown in Figure 41, Figure 42, and Figure 43.

Maintaining this condition when the device has just finished a conversion (as shown in Figure 41) takes the

device immediately into the sampling phase after the conversion phase (back-to-back conversion) and

hence achieves maximum throughput. Otherwise, the device enters the wait state.

Figure 41. Back-To-Back Conversion and Sample

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