dac1205d750 NXP Semiconductors, dac1205d750 Datasheet - Page 31

• Manufacturer Part Number: dac1205d750
• Description: Dac1205d750 Dual 12-bit Dac, Up To 750 Msps; 4? And 8? Interpolating
• Manufacturer: NXP Semiconductors

NXP Semiconductors
DAC1205D750
Product data sheet
10.12 Analog output
Table 41.
Default settings are shown highlighted.
The DAC1205D750 has two output channels each of which produces two complementary
current outputs. These allow the even-order harmonics and noise to be reduced. The pins
are IOUTAP/IOUTAN and IOUTBP/IOUTBN, respectively and need to be connected via a
load resistor R
Refer to
of a parallel combination of NMOS current sources, and their associated switches, for
each segment.
The cascode source configuration increases the output impedance of the source, thus
improving the dynamic performance of the DAC by introducing less distortion.
The device can provide an output level of up to 2 V
following stages and the targeted performances.
DAC_OFFSET[11:0]
Decimal
−1024
−1023
...
−1
0
+1
...
+1022
+1023
Fig 12. Equivalent analog output circuit (one DAC)
Figure 12
Digital offset adjustment
L
All information provided in this document is subject to legal disclaimers.
to the 3.3 V analog power supply (V
for the equivalent analog output circuit of one DAC. This circuit consists
Rev. 2 — 10 September 2010
AGND
Dual 12-bit DAC, up to 750 Msps; 4× and 8× interpolating
Two’s complement
100 0000 0000
100 0000 0001
...
111 1111 1111
000 0000 0000
000 0000 0001
...
011 1111 1110
011 1111 1111
AGND
IOUTAP/IOUTBP
IOUTAN/IOUTBN
o(p-p)
DDA(3V3)
depending on the application, the
DAC1205D750
).
Offset applied
−1024
−1023
...
−1
0
+1
...
+1022
+1023
V
DDA(3V3)
R L
001aah019
R L
© NXP B.V. 2010. All rights reserved.
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