Datasheet

AD9923A
Rev. A | Page 69 of 84
Address
(Hex)
Data
Bits
Default
Value
Update
Type Name Description
01 [0] 0 SCK DOUTDISABLE 0: data outputs are driven.
1: data outputs are three-stated.
[1] 0 DOUTLATCH 0: latch data outputs using DOUT PHASE register setting.
1: output latch is transparent.
[2] 0 GRAYEN 0: straight binary encoding of ADC digital output data.
1: enable gray encoding of ADC digital output data.
[3] 1 TEST Set to 1.
04 [1:0] 1 VD CDSGAIN CDS gain setting.
0: −3 dB.
1: 0 dB.
2: +3 dB.
3: +6 dB.
05 [9:0] F VD VGAGAIN VGA gain. 6 dB to 42 dB (0.035 dB per step).
06 [9:0] 1EC VD CLAMPLEVEL Optical black clamp level. 0 LSB to 256 LSB (0.25 LSB per step).