Datasheet

A DataIn
BDataIn
x2 x2
x2 x2
FIR0
FIR1
CMIX0
CMIX1
A DataOut
BDataOut
BlockDiagram
(sameforeach)
A MixIn
BMixIn
A MixOut
BMixOut
0
1
0
1
0 1
0 1
MixSequencerCMIXx_mode(1:0)
1 -1
1 -1
DAC5682Z
SLLS853E –AUGUST 2007–REVISED AUGUST 2012 www.ti.com
Table 7. CMIX0 Mixer Sequences
Mode CMIX0_mode(1) CMIX0_mode(0) MIXING SEQUENCE
Normal 0 0 FIR0A = { +A, +A , +A, +A }
(Low Pass, No Mixing) FIR0B = { +B, +B , +B, +B }
High Pass 0 1 FIR0A = { +A, –A , +A, –A }
FIR0B = { +B, –B , +B, –B }
+F
DAC
/8 (+Fs/4) 1 0 FIR0A = { +A, –B , –A, +B }
FIR0B = { +B, +A , –B, –A }
–F
DAC
/8 (–Fs/4) 1 1 FIR0A = { +A, +B , –A, –B }
FIR0B = { +B, –A , –B, +A }
Table 8. CMIX1 Mixer Sequences
Mode CMIX1_mode(1) CMIX1_mode(0) MIXING SEQUENCE
Normal 0 0 DACA = { +A, +A , +A, +A }
(Low Pass, No Mixing) DACB = { +B, +B , +B, +B }
High Pass (Fs/2) 0 1 DACA = { +A, –A , +A, –A }
DACB = { +B, –B , +B, –B }
+F
DAC
/4 1 0 DACA = { +A, –B , –A, +B }
DACB = { +B, +A , –B, –A }
–F
DAC
/4 1 1 DACA = { +A, +B , –A, –B }
DACB = { +B, –A , –B, +A }
Figure 32. CMIX0 and CMIX1 Coarse Mixers Block Diagram
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