DAC1008D650 Datasheet, PDF (32/98 Pages) NXP Semiconductors – Dual 10-bit DAC up to 650 Msps; 2×, 4× or 8× interpolating with JESD204A interface

NXP Semiconductors
DAC1008D650
2×, 4× or 8× interpolating DAC with JESD204A
10.12 Auxiliary DACs
The DAC1008D650 integrates two auxiliary DACs that can be used to compensate for
any offset between the DAC and the next stage in the transmission path.
Both auxiliary DACs have a 10-bit resolution and are current sources (referenced to
ground).
I_O(AUX) = I_AUXP + I_AUXN
(6)
The output current depends on the auxiliary DAC data:
AUXP
=
I_O
(
AUX)
×
⎛
⎝
A_-----U_--1--X_-0---2[_---9_3---:_-0_----]⎠⎞
(7)
AUXN
=
I_O
(A
U
X)
×
⎛
⎝
(_--1_----0_---2_--3_----–_--1-A_--0--U_-2---3-X_----[_--9_---:_--0_---]_---)_{-⎠⎞}
(8)
Table 17 shows the output current as a function of the auxiliary DAC data.
Table 17. Auxiliary DAC transfer function
Default settings are shown highlighted.
Data
AUX[9:0] (binary)
0
00 0000 0000
...
...
512
10 0000 0000
...
...
1023
11 1111 1111
I_AUXP
0 mA
...
1.1 mA
...
2.2 mA
I_AUXN
2.2 mA
...
1.1 mA
...
0 mA
DAC1008D650
Preliminary data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 1 October 2010
© NXP B.V. 2010. All rights reserved.
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