DAC1401D125HL NXP [NXP Semiconductors], DAC1401D125HL Datasheet - Page 20

• Manufacturer Part Number: DAC1401D125HL
• Description: Dual 14-bit DAC, up to 125 Msps
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
DAC1401D125_1
Product data sheet
10.7.1 Differential output using transformer
10.7.2 Single-ended output
10.8 Power-down function
The use of a differentially coupled transformer output (see
distortion performance. In addition, it helps to match the impedance and provides
electrical isolation.
The center tap is grounded to allow the DC current flow to/from both outputs. If the center
tap is open, the differential resistor must be replaced by two resistors connected to
ground.
Using a single load resistor on one current output will provide an unipolar output range,
typically from 0 V to 0.5 V with a 20 mA full-scale current at a 50
The resistor on the other current output is 25 .
The DAC1404D125 has a power-down function to reduce the power consumption when it
is not active.
Table 9.
PWD
0
1
Fig 21. Differential output with transformer
Fig 22. Single-ended output
Power-down
Rev. 01 — 13 November 2008
IOUTAN/
IOUTAP/
IOUTBP
IOUTBN
IOUTAP/
IOUTAN/
IOUTBP
IOUTBN
Device function
active
not active
20 mA
50
25
Z = 50
R diff
T1-1T
1:1
50
001aai935
Dual 14-bit DAC, up to 125 Msps
0 V to 0.5 V
R load
Figure
001aai936
DAC1401D125
Power dissipation (typ)
185 mW
16.5 mW
21) provides optimum
load.
© NXP B.V. 2008. All rights reserved.
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