參數(shù)資料
型號(hào)： MAX5186BEEI
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： DAC
英文描述： Dual, 8-Bit, 40MHz, Current/Voltage, Simultaneous-Output DACs
中文描述： PARALLEL, 8 BITS INPUT LOADING, 0.025 us SETTLING TIME, 8-BIT DAC, PDSO28
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-28
文件頁數(shù)： 13/16頁
文件大?。?/td> 266K
代理商： MAX5186BEEI
M
Dual, 8-Bit, 40MHz, Current/Voltage,
Simultaneous-Output DACs
______________________________________________________________________________________
13
I/Q Reconstruction in a QAM Application
The MAX5186/MAX5189’s low distortion supports ana-
log reconstruction of in-phase (I) and quadrature (Q)
carrier components typically used in quadrature ampli-
tude modulation (QAM) architectures where I and Q
data are interleaved on a common data bus. A QAM
signal is both amplitude and phase modulated, created
by summing two independently modulated carriers of
identical frequency but different phase (90° phase dif-
ference).
In a typical QAM application (Figure 7), the modulation
occurs in the digital domain and the MAX5186/
MAX5189’s dual DACs may be used to reconstruct the
analog I and Q components.
The I/Q reconstruction system is completed by a quad-
rature modulator that combines the reconstructed I and
Q components with in-phase and quadrature carrier
frequencies and then sums both outputs to provide the
QAM signal.
Grounding and Power-Supply Decoupling
Grounding and power-supply decoupling strongly influ-
ence the MAX5186/MAX5189’s performance. Unwanted
digital crosstalk may couple through the input, refer-
0
2
1
4
3
7
6
5
000
010
DIGITAL INPUT CODE
001
011
100
101
110
AT STEP
011 (1/2 LSB )
AT STEP
001 (1/4 LSB )
111
A
Figure 5a. Integral Nonlinearity
0
2
1
3
000
010
001
DIGITAL INPUT CODE
011
ACTUAL
DIAGRAM
IDEAL DIAGRAM
ACTUAL
OFFSET
POINT
OFFSET ERROR
(+1 1/4 LSB)
IDEAL OFFSET
POINT
A
Figure 5c. Offset Error
0
5
4
6
7
000
101
100
110
111
IDEAL DIAGRAM
GAIN ERROR
(-1 1/4 LSB)
IDEAL FULL-SCALE OUTPUT
ACTUAL
FULL-SCALE
OUTPUT
DIGITAL INPUT CODE
A
Figure 5d. Gain Error
0
2
1
4
3
6
5
000
010
DIGITAL INPUT CODE
001
011
100
101
DIFFERENTIAL LINEARITY
ERROR (-1/4 LSB)
DIFFERENTIAL
LINEARITY ERROR (+1/4 LSB)
1 LSB
1 LSB
A
Figure 5b. Differential Nonlinearity
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5186BEEI+ 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 2Ch High Speed 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
MAX5186BEEI+T 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 2Ch High Speed 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
MAX5186BEEI-T 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
MAX5186-MAX5189 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual, 8-Bit, 40MHz, Current/Voltage, Simultaneous-Output DACs
MAX5187 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:8-Bit, 40MHz, Current/Voltage-Output DACs
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