Datasheet

 
      
    
SLAS198E − FEBRUARY 1999 − REVISED JUNE 2003
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
detailed description (continued)
Charge
Redistribution
DAC
Control
Logic
_
+
REFM
Ain
ADC Code
Figure 1. Simplified Model of the Successive-Approximation System
serial interface
INPUT DATA FORMAT
MSB LSB
D15−D12 D11−D0
Command ID[15:12] Configuration data field ID[11:0]
Input data is binary. All trailing blanks can be filled with zeros.
OUTPUT DATA FORMAT READ CFR/FIFO READ
MSB LSB
D15−D12 D11−D0
Don’t care Register content or FIFO content OD[11:0]
OUTPUT DATA FORMAT CONVERSION
MSB LSB
D15−D4 D3−D0
Conversion result OD[11:0] Don’t care
The output data format is binary (unipolar straight binary).
binary
Zero scale code = 000h, Vcode = VREFM
Full scale code = FFFh, Vcode = VREFP − 1 LSB