DAC1208D750HN NXP [NXP Semiconductors], DAC1208D750HN Datasheet - Page 34

• Manufacturer Part Number: DAC1208D750HN
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
DAC1208D750
Product data sheet
10.13.2 DC interface to an Analog Quadrature Modulator (AQM)
When the system operation requires to keep the DC component of the spectrum, the
DAC1208D750 must use a DC interface to connect to an AQM. In this case, the offset
compensation for LO cancellation can be made with the use of the digital offset control in
the DAC.
Figure 21
(V
Figure 22
(V
The auxiliary DACs can be used to control the offset in a precise range or with precise
steps.
Fig 21. Example of a DC interface connection to an AQM with a V
Fig 22. Example of a DC interface connection to an AQM with a V
i(cm)
i(cm)
) of 1.7 V.
) of 3.3 V.
is an example of a connection to an AQM with a common-mode input level
is an example of a connection to an AQM with a common-mode input level
IOUTnN
IOUTnN
IOUTnP
IOUTnP
All information provided in this document is subject to legal disclaimers.
(1)
(1)
(1)
(2)
(1)
(2)
0 mA to 20 mA
BBP/BBN; V
Rev. 2 — 6 December 2010
IOUTnP/IOUTnN; V
BBP/BBN; V
IOUTnP/IOUTnN; V
V
V
51.1 Ω
54.9 Ω
1.27 kΩ
DDA(3V3)
DDA(3V3)
i(cm)
i(cm)
51.1 Ω
54.9 Ω
1.27 kΩ
= 1.7 V; V
= 3.3 V; V
o(cm)
o(cm)
442 Ω
442 Ω
237 Ω
237 Ω
= 2.67 V; V
= 2.75 V; V
2×, 4× or 8× interpolating DAC with JESD204A
i(dif)(p-p)
i(dif)(p-p)
750 Ω
768 Ω
= 1.26 V
= 1.5 V
o(dif)(p-p)
o(dif)(p-p)
5 V
750 Ω
768 Ω
= 1.98 V
= 1.97 V
DAC1208D750
BBP
BBN
BBP
BBN
AQM (V
AQM (V
(2)
(2)
i(cm)
i(cm)
i(cm)
i(cm)
001aaj541
001aaj542
of 1.7 V
of 3.3 V
= 1.7 V)
= 3.3 V)
© NXP B.V. 2010. All rights reserved.
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