參數(shù)資料
型號(hào)： MAX1183ECM
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： ADC
英文描述： Dual 10-Bit, 40Msps, +3V, Low-Power ADC with Internal Reference and Parallel Outputs
中文描述： DUAL 1-CH 10-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQFP48
封裝： 7 X 7 MM, 1.0 MM HEIGHT, MS-026ABAHD, TQFP-48
文件頁(yè)數(shù)： 15/18頁(yè)
文件大?。?/td> 495K
代理商： MAX1183ECM
quadrature (Q) carrier component, where the Q compo-
nent is 90-degree phase-shifted with respect to the in-
phase component. At the receiver, the QAM signal is
divided down into its I and Q components, essentially
representing the modulation process reversed. Figure 8
displays the demodulation process performed in the
analog domain, using the dual matched +3V, 10-bit
ADC MAX1183 and the MAX2451 quadrature demodu-
lator to recover and digitize the I and Q baseband sig-
nals. Before being digitized by the MAX1183, the
mixed-down signal components may be filtered by
matched analog filters, such as Nyquist or pulse-shap-
ing filters, which remove any unwanted images from the
mixing process, thereby enhancing the overall SNR
performance and minimizing intersymbol interference.
Grounding, Bypassing, and
Board Layout
The MAX1183 requires high-speed board layout design
techniques. Locate all bypass capacitors as close to
the device as possible, preferably on the same side as
the ADC, using surface-mount devices for minimum
inductance. Bypass V
DD
, REFP, REFN, and COM with
two parallel 0.1μF ceramic capacitors and a 2.2μF
bipolar capacitor to GND. Follow the same rules to
bypass the digital supply (OV
DD
) to OGND. Multilayer
boards with separated ground and power planes pro-
duce the highest level of signal integrity. Consider the
use of a split ground plane arranged to match the
physical location of the analog ground (GND) and the
digital output driver ground (OGND) on the ADC
’
s
package. The two ground planes should be joined at a
single point such that the noisy digital ground currents
do not interfere with the analog ground plane. The ideal
location of this connection can be determined experi-
mentally at a point along the gap between the two
ground planes, which produces optimum results. Make
this connection with a low-value, surface-mount resistor
M
Dual 10-Bit, 40Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
______________________________________________________________________________________
15
MAX1183
T1
N.C.
V
IN
6
1
5
2
4
3
22pF
22pF
0.1
μ
F
0.1
μ
F
2.2
μ
F
25
25
MINICIRCUITS
TT1
–
6
T1
N.C.
V
IN
6
1
5
2
4
3
22pF
22pF
0.1
μ
F
0.1
μ
F
2.2
μ
F
25
25
MINICIRCUITS
TT1
–
6
INA-
INA+
INB-
INB+
COM
Figure 6. Transformer-Coupled Input Drive
MAX1183
0.1
μ
F
1k
1k
100
100
C
IN
22pF
C
IN
22pF
INB+
INB-
COM
INA+
INA-
0.1
μ
F
R
ISO
50
R
ISO
50
REFP
REFN
V
IN
MAX4108
0.1
μ
F
1k
1k
100
100
C
IN
22pF
C
IN
22pF
0.1
μ
F
R
ISO
50
R
ISO
50
REFP
REFN
V
IN
MAX4108
Figure 7. Using an Op Amp for Single-Ended, AC-Coupled
Input Drive
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1183ECM+D 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 2Ch 40Msps High Speed ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1183ECM+TD 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 2Ch 40Msps High Speed ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1183ECM-D 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1183ECM-TD 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1184ECM 制造商:Maxim Integrated Products 功能描述:DUAL 10-BIT, 20MSPS, +3V, LOW-POWER ADC WITH - Rail/Tube
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