dac1405d650 NXP Semiconductors, dac1405d650 Datasheet - Page 35

• Manufacturer Part Number: dac1405d650
• Description: Dual 14-bit Dac, Up To 650 Msps; 2? 4? And 8? Interpolating
• Manufacturer: NXP Semiconductors

NXP Semiconductors
DAC1405D650_1
Product data sheet
10.14.3 AC interface to an Analog Quadrature Modulator (AQM)
When the AQM common mode voltage is close to ground, the DAC1405D650 must be
AC-coupled and the auxiliary DACs are needed for offset correction.
Figure 18
input level when using auxiliary DACs.
Fig 19. 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
DAC1405D650
IOUTN
IOUTP
AUXP
AUXN
Rev. 01 — 4 May 2009
IOUTP/IOUTN
V
V
0 mA to 20 mA
1.1 mA (typ.)
o(cm)
o(dif)(p-p)
Dual 14-bit DAC, up to 650 Msps; 2 4 and 8 interpolating
66.5
= 2.65 V
3.3 V
= 1.96 V
66.5
10 nF
10 nF
BBP/BBN
V
V
offset correction up to 70 mV
i(cm)
i(dif)(p-p)
= 0.5 V
i(cm)
2 k
174
34
= 1.96 V
5 V
AQM when using auxiliary DACs
2 k
174
34
DAC1405D650
BBP
BBN
AQM (V
i(cm)
i(cm)
© NXP B.V. 2009. All rights reserved.
001aaj589
= 0.5 V)
common mode
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