dac1628d1g25 NXP Semiconductors, dac1628d1g25 Datasheet - Page 31

• Manufacturer Part Number: dac1628d1g25
• Description: Dual 16-bit Dac Jesd204b Interface Up To 1.25 Gsps; X2, X4 And X8 Interpolating
• Manufacturer: NXP Semiconductors

NXP Semiconductors
DAC1628D1G25
Objective data sheet
10.15.3 IQ-modulator - DC interface
When the system operation requires to keep the DC component of the spectrum, the
DAC1628D1G25 can use a DC interface to connect an IQ-modulator. In this case, the
offset compensation for local oscillator can be canceled using the digital offset control in
the device.
Figure 17
input level.
Figure 18
input level.
Fig 17. IQ-modulator: DC interface with a 1.7 V common input level
Fig 18. IQ-modulator: DC interface with a 3.3 V common input level
IOUTAN/IOUTBN
IOUTAN/IOUTBN
IOUTAP/IOUTBP
IOUTAP/IOUTBP
DAC1628D
DAC1628D
shows an example of a connection to an IQ modulator with a 1.7 V common
shows an example of a connection to an IQ-modulator with a 3.3 V common
All information provided in this document is subject to legal disclaimers.
0 mA to 20 mA
Rev. 1.1 — 10 October 2011
IOUTAP/IOUTAN
IOUTBP/IOUTBN
V
V
IOUTAP/IOUTAN
IOUTBP/IOUTBN
V
V
O(cm)
O(dif)
O(cm)
O(dif)
51.1 Ω
54.9 Ω
1.27 kΩ
3.3 V
3.3 V
= 1.98 V
= 1.97 V
= 2.67 V
= 2.75 V
Dual 16-bit DAC: JESD204B interface; up to 1.25 Gsps
51.1 Ω
54.9 Ω
1.27 kΩ
442 Ω
442 Ω
237 Ω
237 Ω
BBAP/BBAN
BBBP/BBBN
V
V
BBAP/BBAN
BBBP/BBBN
V
V
I(cm)
I(dif)
I(cm)
I(dif)
768 Ω
750 Ω
5 V
= 1.26 V
= 1.5 V
= 1.7 V
= 3.3 V
DAC1628D1G25
750 Ω
768 Ω
IQ-modulator (V
IQ-modulator (V
BBAP/BBBP
BBAN/BBBN
BBAP/BBBP
BBAN/BBBN
© NXP B.V. 2011. All rights reserved.
aaa-000277
aaa-000276
I(cm)
I(cm)
= 1.7 V)
= 3.3 V)
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