dac1208d650 NXP Semiconductors, dac1208d650 Datasheet - Page 36

• Manufacturer Part Number: dac1208d650
• Description: Dac1208d650 Dual 12-bit Dac; Up To 650 Msps; 2?, 4? Or 8? Interpolating With Jesd204a Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
DAC1208D650
Product data sheet
10.13.3 AC interface to an Analog Quadrature Modulator (AQM)
When the AQM common-mode voltage is close to ground, the DAC1208D650 must be
AC-coupled and the auxiliary DACs are needed for offset correction.
Figure 25
(V
Fig 25. Example of a DC interface connection to an AQM with a V
i(cm)
) of 0.5 V when using auxiliary DACs.
auxiliary DACs
is an example of a connection to an AQM with a common-mode input level
IOUTnN
IOUTnP
AUXnN
AUXnP
All information provided in this document is subject to legal disclaimers.
(1)
(1)
(2)
0 mA to 20 mA
Rev. 2 — 14 December 2010
1.1 mA (typ.)
IOUTnP/IOUTnN; V
BBP/BBN; V
V
66.5 Ω
DDA(3V3)
2×, 4× or 8× interpolating DAC with JESD204A interface
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
2 kΩ
174 Ω
34 Ω
= 1.96 V
DAC1208D650
BBP
BBN
AQM (V
(2)
i(cm)
i(cm)
001aaj589
of 0.5 V when using
= 0.5 V)
© NXP B.V. 2010. All rights reserved.
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