DAC1205D650HW/C1:5 NXP Semiconductors, DAC1205D650HW/C1:5 Datasheet - Page 30

• Manufacturer Part Number: DAC1205D650HW/C1:5
• Description: DAC1205D650HW/HTQFP100/TRAYBDP
• Manufacturer: NXP Semiconductors

Specifications of DAC1205D650HW/C1:5

• Settling Time: 20ns
• Number Of Bits: 12
• Data Interface: SPI™
• Number Of Converters: 2
• Voltage Supply Source: Analog and Digital
• Power Dissipation (max): 1.4W
• Operating Temperature: -45°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP Exposed Pad, 100-eTQFP, 100-HTQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935286777551

NXP Semiconductors
DAC1205D650
Product data sheet
10.12 Analog output
Table 38.
Default settings are shown highlighted.
The DAC1205D650 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 using
a load resistor R
Refer to
output circuit of one DAC. This circuit consists 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[10:0]
Decimal
−1024
−1023
...
−1
0
+1
...
+1022
+1023
Fig 12. Equivalent analog output circuit (one DAC)
Figure 12 “Equivalent analog output circuit (one DAC)”
Digital offset adjustment
All information provided in this document is subject to legal disclaimers.
L
to the 3.3 V analog power supply (V
Rev. 2 — 13 September 2010
Dual 12-bit DAC, up to 650 Msps; 2× 4× and 8× interpolating
AGND
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
DAC1205D650
Offset applied
−1024
−1023
...
−1
0
+1
...
+1022
+1023
V
).
DDA(3V3)
R L
001aah019
for the equivalent analog
R L
© NXP B.V. 2010. All rights reserved.
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