www.ti.com ............................................................................................................................................................. SLAS631A – APRIL 2009 – REVISED JULY 2009
A7 – A0 IN HEX
D7
D6
D5
D4
D3
D2
D1
D0
63
0
<OFFSET PEDESTAL – Common/Ch A>
D5-D0
<OFFSET PEDESTAL – Common/Ch A>
When the offset correction is enabled, the final converged value after the offset is corrected will be
the ADC mid-code value. A pedestal can be added to the final converged value by programming
these bits. See "Offset Correction" in application section.
Applies to both channels (with common control) or for channel A only (with independent control).
011111
PEDESTAL = 31 LSB
011110
PEDESTAL = 30 LSB
011101
PEDESTAL = 29 LSB
....
000000
PEDESTAL = 0 LSB
....
111111
PEDESTAL = –1 LSB
111110
PEDESTAL = –2 LSB
....
100000
PEDESTAL = –32LSB
A7 – A0 IN HEX
D7
D6
D5
D4
D3
D2
D1
D0
66
0
<OFFSET CORRECTION ENABLE
0
– CH B>
Offset correction enable
D6
<OFFSET CORRECTION ENABLE – CH B>
Offset correction enable control for channel B (only with independent control).
0 offset correction disabled
1 offset correction enabled
Copyright 2009, Texas Instruments Incorporated
25