DAC1408D650C1 NXP [NXP Semiconductors], DAC1408D650C1 Datasheet - Page 34

• Manufacturer Part Number: DAC1408D650C1
• Description: Dual 14-bit DAC up to 650 Msps 2, 4 or 8 interpolating
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
DAC1408D650
Preliminary 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
DAC1408D650 can 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 22
input level.
Figure 23
input level.
The auxiliary DACs can be used to control the offset in a precise range or with precise
steps.
Figure 24
a 1.7 V
Fig 22. An example of a DC interface to a 1.7 V
Fig 23. An example of a DC interface to a 3.3 V
i(cm)
provides an example of a connection to an AQM with a 1.7 V
provides an example of a connection to an AQM with a 3.3 V
provides an example of a DC interface with the auxiliary DACs to an AQM with
common mode input level.
IOUTnN
IOUTnN
IOUTnP
IOUTnP
DAC1408D; up to 650 Msps; 2×, 4× or 8× interpolating with JESD204A
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
IOUTnP/IOUTnN; V
BBP/BBN; V
IOUTnP/IOUTnN; V
Rev. 02 — 11 August 2010
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
i(dif)(p-p)
i(dif)(p-p)
750 Ω
768 Ω
= 1.26 V
= 1.5 V
i(cm)
i(cm)
o(dif)(p-p)
o(dif)(p-p)
5 V
AQM
AQM
750 Ω
768 Ω
= 1.98 V
= 1.97 V
DAC1408D650
BBP
BBN
BBP
BBN
AQM (V
AQM (V
(2)
(2)
i(cm)
i(cm)
001aaj541
001aaj542
= 1.7 V)
= 3.3 V)
i(cm)
i(cm)
© NXP B.V. 2010. All rights reserved.
common mode
common mode
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