DAC1408D650C1 NXP [NXP Semiconductors], DAC1408D650C1 Datasheet - Page 36

• 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
10.13.3 AC interface to an Analog Quadrature Modulator (AQM)
When the AQM common mode voltage is close to ground, the DAC1408D650 must be
AC-coupled and the auxiliary DACs are needed for offset correction.
Figure 26
input level when using auxiliary DACs.
Fig 26. An example of an AC interface to a 0.5 V
provides an example of a connection to an AQM with a 0.5 V
IOUTnN
IOUTnP
AUXnN
DAC1408D; up to 650 Msps; 2×, 4× or 8× interpolating with JESD204A
AUXnP
All information provided in this document is subject to legal disclaimers.
(1)
(1)
(2)
0 mA to 20 mA
1.1 mA (typ.)
IOUTnP/IOUTnN; V
BBP/BBN; V
Rev. 02 — 11 August 2010
V
66.5 Ω
DDA(3V3)
i(cm)
66.5 Ω
= 0.5 V; V
o(cm)
10 nF
10 nF
= 2.65 V; V
i(dif)(p-p)
2 kΩ
174 Ω
34 Ω
= 1.96 V; offset correction up to 70 mV
o(dif)(p-p)
5 V
i(cm)
AQM when using auxiliary DACs
2 kΩ
174 Ω
34 Ω
= 1.96 V
DAC1408D650
BBP
BBN
AQM (V
(2)
i(cm)
001aaj589
= 0.5 V)
i(cm)
© NXP B.V. 2010. All rights reserved.
common mode
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