www.ti.com

PARAMETER MEASUREMENT INFORMATION

1

2

CS

R/C

External

DATACLK

CS Set Low, Discontinuous Ext DATACLK

R/C

CS

External

DATACLK

R/C Set Low, Discontinuous Ext DATACLK

CS

R/C

BUSY

External

DATACLK

CS Set Low, Discontinuous Ext DATACLK

R/C

BUSY

STATUS

(N+1)th Accquisition

(N+1)th Conversion

Error

Correction

Nth Conversion

Error

Correction

Internal

DATACLK

(N−1)th Conversion Data

DATA

Nth Conversion Data

(N+2)th Accquisition

1

2

12

2

12

D11

D0

D11

D0

TAG = 0

TAG = 0

TAG = 0

8 starts READ

CS, EXT/INT, and TAG are tied low

1

ADS8508

SLAS433 – SEPTEMBER 2005

Figure 1. Critical Timing

Figure 2. Basic Conversion Timing - Internal DATACLK (Read Previous Data During Conversion)

7