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| 型號(hào)： | DAC1617D1G0HN |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Dual 16-bit DAC: up to 1 Gsps; x2, x4 and x8 interpolating |
| 封裝： | DAC1617D1G0HN/C1<SOT813-3 (HVQFN72)|<<http://www.nxp.com/packages/SOT813-3.html<1<Always Pb-free,;DAC1617D1G0HN/C1<SOT813-3 (HVQFN72)|<<http://www.nxp.com/packages/SOT813 |
| 文件頁數(shù)： | 36/66頁 |
| 文件大小： | 519K |
| 代理商： | DAC1617D1G0HN |
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DAC1617D1G0
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Objective data sheet
Rev. 1.1 — 30 September 2011
36 of 66
NXP Semiconductors
DAC1617D1G0
Dual 16-bit DAC: up to 1 Gsps; x2, x4 and x8 interpolating
The constraints to adjust the interface are:
The output compliance range of the DAC
The output compliance range of the auxiliary DACs
The input common-mode level of the IQ-modulator
The range of offset correction
10.16.4
IQ-modulator - AC interface
Use the DAC1617D1G0 AC-coupled when the IQ-modulator common-mode voltage is
close to ground. The auxiliary DACs are required for local oscillator
cancelation.
Figure 29
shows an example of a connection to an IQ-modulator with a 0.5 V common
input level and auxiliary DACs.
10.17 Design recommendations
10.17.1
Power and grounding
Use a separate power supply regulator for the generation of the 1.8 V analog power
(pins 65, 62, 55, 69, 72 and 58) and the 1.8 V digital power (pins 12, 19, 36, 26 and 43) to
ensure optimal performance.
Also, include individual LC decoupling for the following six sets of power pins:
V
DDA(1V8)_P1
(pin 62)
V
DDA(1V8)_P2
(pin 65)
V
DDA(1V8)
(pins 55, 69, 72 and 58)
V
DDD(1V8)
(core: pins 12, 26 and 43)
Fig 29. IQ-modulator: AC interface with a 0.5 V common input level and auxiliary DACs
IOUTAP/IOUTBP
3.3 V
DAC1617D
65.5 Ω
65.5 Ω
5 V
2 kΩ
2 kΩ
34 Ω
34 Ω
174 Ω
174 Ω
IOUTAN/IOUTBN
AUXAP/AUXBP
AUXAN/AUXBN
BBAP/BBBP
BBAP/BBAN
BBBP/BBBN
V
I(cm)
= 0.5 V
V
I(dif)
= 1.96 V
offset correction = up to 70 mV
IOUTAP/IOUTAN
IOUTBP/IOUTBN
V
O(cm)
= 2.65 V
V
O(dif)
= 1.96 V
BBAN/BBBN
aaa-000267
10 nF
10 nF
0 mA to 20 mA
1.1 mA (typical)
IQ-modulator (V
I(cm)
= 0.5 V)
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