DAC1405D650HW/C1,5 NXP Semiconductors, DAC1405D650HW/C1,5 Datasheet - Page 36

• Manufacturer Part Number: DAC1405D650HW/C1,5
• Description: IC DAC 14BIT 650MSPD DL 100HTQFP
• Manufacturer: NXP Semiconductors

Specifications of DAC1405D650HW/C1,5

• Settling Time: 20ns
• Number Of Bits: 14
• 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: 935286775518

NXP Semiconductors
DAC1405D650
Product data sheet
10.14.3 AC interface to an Analog Quadrature Modulator (AQM)
When the AQM common mode voltage is close to ground, the DAC1405D650 must be
AC-coupled and the auxiliary DACs are needed for offset correction.
Figure 19
input level when using auxiliary DACs.
Fig 19. An example of an AC interface to a 0.5 V
provides an example of a connection to an AQM with a 0.5 V
IOUTnN
IOUTnP
AUXnN
AUXnP
All information provided in this document is subject to legal disclaimers.
(1)
(1)
(2)
Rev. 3 — 10 September 2010
0 mA to 20 mA
1.1 mA (typ.)
IOUTnP/IOUTnN; V
BBP/BBN; V
V
Dual 14-bit DAC, up to 650 Msps; 2×, 4× and 8× interpolating
66.5 Ω
DDA(3V3)
i(cm)
66.5 Ω
= 0.5 V; V
o(cm)
10 nF
10 nF
= 2.65 V; V
i(dif)(p-p)
2 kΩ
174 Ω
34 Ω
= 1.96 V; offset correction up to 70 mV
o(dif)(p-p)
5 V
i(cm)
AQM when using auxiliary DACs
2 kΩ
174 Ω
34 Ω
= 1.96 V
DAC1405D650
BBP
BBN
AQM (V
(2)
i(cm)
001aaj589
= 0.5 V)
i(cm)
© NXP B.V. 2010. All rights reserved.
common mode
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