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| 型號： | 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)： | 32/66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
32 of 66
NXP Semiconductors
DAC1617D1G0
Dual 16-bit DAC: up to 1 Gsps; x2, x4 and x8 interpolating
Table 20
shows the output current as a function of the auxiliary DACs data DATAA and
DATAB in
Equation 9
to
Equation 12
.
Table 20.
DATAA; DATAB
10.16 Output configuration
10.16.1
Basic output configuration
The use of a differentially coupled transformer output (see
Figure 22
) provides optimum
distortion performance. In addition, it helps to match the impedance and provides
electrical isolation.
The DAC1617D1G0 can operate a differential output of up to 2 V (p-p). In this
configuration, connect the center tap of the transformer to a 62
resistor, which is
connected to the 3.3 V analog power supply. This adjusts the DC common-mode to
around 2.7 V (see
Figure 23
).
Auxiliary DAC transfer function
AUX_A[9:2]/AUX_A[1:0];
AUX_B[9:0]/AUX_B[1:0]
(binary coding)
00 0000 0000
...
10 0000 0000
...
11 1111 1111
I
AUXAP
; I
AUXBP
(mA)
I
AUXAN
; I
AUXBN
(mA)
0
...
512
...
1023
0
...
1.55
...
3.1
3.1
...
1.55
...
0
Fig 22. 1 V (p-p) differential output with transformer
aaa-000260
50 Ω
50 Ω
2:1
50 Ω
IOUTAP/IOUTBP
DAC1617D
IOUTAP/IOUTAN
IOUTBP/IOUTBN
V
O(cm)
= 2.8 V
V
O(dif)
= 1 V
IOUTAN/IOUTBN
3.3 V
3.3 V
0 mA to 20 mA
0 mA to 20 mA
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