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MAX1426
10-Bit, 10Msps ADC
______________________________________________________________________________________
13
octal D-latched flip-flop (74ALS374), or use octal
buffers such as the 74ALS541.
Typical Application Using an
External Reference
Figure 7 shows an application circuit that shuts down
the internal reference, allowing an external reference to
be used for selecting a different common-mode volt-
age. This added flexibility also allows for ratiometric
conversions, as well as for calibration.
Using Transformer Coupling
A small transformer (Figure 8) provides isolation and
AC-coupling to the ADC’s input. Connecting the trans-
former's center tap to CML provides a +2.25VDC level
shift to the input. Transformer coupling reduces the
need for high-speed op amps, thereby reducing cost.
Although a 1:1 transformer is shown, a step-up trans-
former may be selected to reduce the drive require-
ments.
Single-Ended DC-Coupled Input Signal
Figure 9 shows an AC-coupled, single-ended applica-
tion. The MAX4106 quad op amp provides high speed,
high bandwidth, low noise, and low distortion to main-
tain the integrity of the input signal.
4.5k
CMLP
INP
INN
CMLN
4.5k
TO T/H INPUT
5.5k
Figure 6. Analog Input DC Bias Circuit
Figure 7. Using an External Reference for REFP, REFN, and CML (internal reference shut down)
MAX1426
REFIN
REFN
R
50
R
+1V
R
50
50
R
VDD
2
CML
0.1
F
0.1
F
0.1
F
AGND
VDD
2
VDD
2
VDD
4
VDD
4
MAX4284
( )
VDD
2
- 1V
(
)
REFP
VDD
2
+ 1V
(
)
MAX4284
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相关代理商/技术参数
MAX1426EAI-T 功能描述:模数转换器 - ADC 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
MAX1427ETN+ 制造商:Maxim from Components Direct 功能描述:THE MAXIM MAX1427ETN+ IS AN ANALOG TO DIGITAL CONVERTER. - Rail/Tube 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Maxim 功能描述:Maxim MAX1427ETN+, 15bit Analog-to-Digital Converter 5V 80Msps -79.dBFS 56-pin TQFN
MAX1427ETN+TD 制造商:Maxim Integrated Products 功能描述:- Tape and Reel
MAX1427ETN-D 功能描述:模数转换器 - ADC 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
MAX1427ETN-TD 功能描述:模数转换器 - ADC 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
MAX1427EVKIT 功能描述:数据转换 IC 开发工具 RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V
MAX1428ETN+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX1428ETN+TD 制造商:Maxim Integrated Products 功能描述:ADC SGL PIPELINED 80MSPS 15-BIT PARALLEL 56TQFN EP - Tape and Reel