dac1005d650 NXP Semiconductors, dac1005d650 Datasheet - Page 32

• Manufacturer Part Number: dac1005d650
• Description: Dual 10-bit Dac, Up To 650 Msps; 2? 4? And 8? Interpolating
• Manufacturer: NXP Semiconductors

NXP Semiconductors
DAC1005D650_1
Product data sheet
10.14.1 Basic output configuration
10.14.2 DC interface to an AQM
10.14 Output configuration
The use of a differentially-coupled transformer output provides optimum distortion
performance (see
addition, it helps to match the impedance and provides electrical isolation.
The DAC1005D650 can operate up to 2 V
is recommended to connect the center tap of the transformer to a 62
to the 3.3 V analog power supply, in order to adjust the DC common mode to
approximately 2.7 V (see
When the system operation requires to keep the DC component of the spectrum, the
DAC1005D650 can use a DC interface to connect to an Analog Quadrature Modulator
(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 15
input level.
Fig 13. Differential output with transformer; V
Fig 14. Differential output with transformer; V
provides an example of a connection to an AQM with a 1.7 V common mode
Figure 13 “Differential output with transformer; V
Rev. 01 — 28 July 2009
Figure 14 “Differential output with transformer; V
Dual 10-bit DAC, up to 650 Msps; 2 4 and 8 interpolating
IOUTnN
IOUTnP
IOUTnP/IOUTnN; V
IOUTnP/IOUTnN; V
IOUTnN
IOUTnP
0 mA to 20 mA
0 mA to 20 mA
0 mA to 20 mA
0 mA to 20 mA
o(cm)
o(cm)
o(p-p)
3.3 V
3.3 V
= 2.8 V; V
= 2.7 V; V
3.3 V
3.3 V
o(dif)(p-p)
o(dif)(p-p)
100
100
differential outputs. In this configuration, it
50
50
3.3 V
2:1
o(dif)(p-p)
o(dif)(p-p)
62
= 1 V
= 2 V
4:1
001aaj817
001aaj818
50
= 1 V
= 2 V
DAC1005D650
50
o(dif)(p-p)
resistor connected
© NXP B.V. 2009. All rights reserved.
o(dif)(p-p)
= 1
V”). In
= 2
32 of 41
V”).