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Maxim Integrated Products 18
MAX11101
14-Bit, +5V, 200ksps ADC with 10A Shutdown
Supplies, Layout, Grounding and Bypassing
Use PCBs with separate analog and digital ground
planes. Do not use wire-wrap boards. Connect the two
ground planes together at the MAX11101. Isolate the
digital supply from the analog with a low-value resistor
(10I) or ferrite bead when the analog and digital sup-
plies come from the same source (Figure 14).
Constraints on sequencing the power supplies and
inputs are as follows:
U
Apply AGND before DGND.
U
Apply AIN and REF after AVDD and AGND are present.
U
DVDD is independent of the supply sequencing.
Ensure that digital return currents do not pass through
the analog ground and that return-current paths are
low impedance. A 5mA current flowing through a PCB
ground trace impedance of only 0.05I creates an error
voltage of about 250FV, 1 LSB error with a 4V full-scale
system.
The board layout should ensure that digital and analog
signal lines are kept separate. Do not run analog and dig-
ital (especially the SCLK and DOUT) lines parallel to one
another. If one must cross another, do so at right angles.
The ADCs high-speed comparator is sensitive to high-
frequency noise on the AVDD power supply. Bypass an
excessively noisy supply to the analog ground plane with
a 0.1FF capacitor in parallel with a 1FF to 10FF low-ESR
capacitor. Keep capacitor leads short for best supply-
noise rejection.
Ordering Information
Chip Information
PROCESS: BiCMOS
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.com/packages. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
Figure 14. Powering AVDD and DVDD from a Single Supply
+Denotes a lead(Pb)-free/RoHS-compliant package.
PART
TEMP RANGE
PIN-PACKAGE
MAX11101EUB+
-40NC to +85NC
10 FMAX
MAX11101EWC+
-40NC to +85NC
12 WLP
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
10 FMAX
U10+2
21-0061
90-0330
12 WLP
W121A2+1
21-0009
Refer to
Application
Note 1891
SCLK
DOUT
AGND
DGND
AIN
10
REF
AVDD
DVDD
DOUT
SCLK
CS
AIN
VREF
+5V
4.7F
0.1F
GND
MAX11101
CS
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相关代理商/技术参数
MAX11101EUB+T 功能描述:模数转换器 - ADC 14-Bit 5V 200ksps w/10uA Shutdown RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX11101EWC 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:14-Bit, +5V, 200ksps ADC with 10μA Shutdown
MAX11101EWC+ 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:14-Bit, 5V, 200ksps ADC with 10??A Shutdown
MAX11101EWC+T 功能描述:模数转换器 - ADC 14-Bit 5V 200ksps w/10uA Shutdown RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32
MAX11102 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2Msps/3Msps, Low-Power, Serial 12-/10-/8-Bit ADCs
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MAX11102_1108 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:2Msps/3Msps, Low-Power, Serial 12-/10-/8-Bit ADCs
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