參數(shù)資料
型號(hào)： DAC1627D1G25
廠商： NXP SEMICONDUCTORS
元件分類： DAC
中文描述： PARALLEL, WORD INPUT LOADING, 0.02 us SETTLING TIME, 16-BIT DAC, PQCC72
封裝： 10 X 10 MM, 0.85 MM HEIGHT, PLASTIC, SOT813-3, HVQFN-72
文件頁數(shù)： 26/69頁
文件大?。?/td> 1677K
代理商： DAC1627D1G25
DAC1627D1G25
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Objective data sheet
Rev. 1 — 29 April 2011
26 of 69
NXP Semiconductors
DAC1627D1G25
Dual 16-bit DAC: up to 1.25 Gsps; x2, x4 and x8 interpolating
Where:
M is the two’s complement coding representation of FREQ_NCO[40:0]
f
s
is the DAC clock sampling frequency
The default settings are:
f
NCO
= 96 MHz
f
s
= 640 Msps
The phase of the NCO can be set by registers PHINCO_LSB and PHINCO_MSB over
16 bits from 0 to 360° (see
Table 44
and
Table 45
).
10.9.2
NCO low power
When using NCO low power (bit NCO_LP_SEL; see
Table 25
), the frequency can be set
by the five MSB-bits of register FREQNCO_B4 (bits FREQ_NCO[39:35]; see
Table 31
).
The frequency is calculated with
Equation 2
.
(2)
Where:
M is the two’s complement coding representation of FREQ_NCO[39:35]
f
s
is the DAC clock sampling frequency
The phase of the NCO low power can be set by the five MSB-bits of register
PHINCO_MSB (see
Table 45
).
10.9.3
Complex modulator
The complex modulator upconverts the single side band by mixing NCO signals and I and
Q input signals.
Table 16
shows the various possibilities set by bits MODULATION[2:0] of
register TXCFG (see
Table 25
).
f
NCO
M
--------------
f
s
×
2
=
Table 16.
MODULATION[2:0]
000
001
Complex modulator operation mode
Mode
bypass
positive
upper ssb
positive
lower ssb
negative
upper ssb
negative
lower ssb
not defined
Path A
Path B
010
011
100
others
-
-
I t
( )
Q t
( )
I t
( )
ω
NCO
t
×
(
)
cos
Q t
( )
ω
NCO
t
×
(
)
sin
×
–
×
I t
( )
ω
NCO
t
×
(
)
sin
Q t
( )
ω
NCO
t
×
(
)
cos
×
+
×
I t
( )
ω
NCO
t
×
(
)
cos
Q t
( )
ω
NCO
t
×
(
)
sin
×
+
×
I t
( )
ω
NCO
t
×
(
)
sin
Q t
( )
ω
NCO
t
×
(
)
cos
×
–
×
I t
( )
ω
NCO
t
×
(
)
cos
Q t
( )
ω
NCO
t
×
(
)
sin
×
–
×
I t
( )
–
ω
NCO
t
×
(
)
sin
Q t
( )
ω
NCO
t
×
(
)
cos
×
–
×
I t
( )
ω
NCO
t
×
(
)
cos
Q t
( )
ω
NCO
t
×
(
)
sin
×
+
×
I t
( )
–
ω
NCO
t
×
(
)
sin
Q t
( )
ω
NCO
t
×
(
)
cos
×
+
×
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DAC1627D1G25/DB,598 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 DAC DEMOBOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
DAC1627D1G25HN/C1, 功能描述:調(diào)節(jié)器/解調(diào)器 DUAL 16b 1.25GSPS to 1.25 Gsps RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel
DAC1627D1G25HN/C1,551 功能描述:調(diào)節(jié)器/解調(diào)器 Dual 16-bit DAC, up to 1.25 Gsps RoHS:否 制造商:Texas Instruments 封裝 / 箱體:PVQFN-N24 封裝:Reel
DAC1627D1G25HN-C1 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
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