DAC1205D650HW/C1,5 NXP Semiconductors, DAC1205D650HW/C1,5 Datasheet - Page 35

• Manufacturer Part Number: DAC1205D650HW/C1,5
• Description: IC DAC 12BIT 650MSPS DL 100HTQFP
• 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: 935286777518

NXP Semiconductors
DAC1205D650
Product data sheet
10.14.3 AC interface to an AQM
When the Analog Quadrature Modulator (AQM) common mode voltage is close to ground,
the DAC1205D650 must be AC-coupled and the auxiliary DACs are needed for offset
correction.
Figure 18
input level 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 common mode
IOUTnN
IOUTnP
AUXnN
AUXnP
All information provided in this document is subject to legal disclaimers.
(1)
(1)
(2)
Rev. 2 — 13 September 2010
0 mA to 20 mA
1.1 mA (typ.)
BBP/BBN; V
IOUTnP/IOUTnN; V
V
66.5 Ω
DDA(3V3)
Dual 12-bit DAC, up to 650 Msps; 2× 4× and 8× interpolating
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 using auxiliary DACs
2 kΩ
174 Ω
34 Ω
= 1.96 V
DAC1205D650
BBP
BBN
AQM (V
(2)
i(cm)
001aaj589
= 0.5 V)
© NXP B.V. 2010. All rights reserved.
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