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MAX11253 PDF预览

MAX11253

更新时间: 2024-09-16 01:05:55
品牌 Logo 应用领域
美信 - MAXIM 电池
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51页 1066K
描述
Longer Battery Life for Portable Applications

MAX11253 数据手册

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EVALUATION KIT AVAILABLE  
MAX11253  
16-Bit, 6-Channel, 64ksps, 6.2nV/√Hz PGA,  
Delta-Sigma ADC with SPI Interface  
General Description  
Benefits and Features  
High Resolution for Industrial Applications that  
Require a Wide Dynamic Range  
• 98dB SNR at 1000sps  
The MAX11253 is a 6-channel, 16-bit delta-sigma ADC  
that achieves exceptional performance while consuming  
very low power. Sample rates up to 64ksps allow preci-  
sion DC measurements. The MAX11253 communicates  
via a SPI serial interface and is available in a small (5mm  
x 5mm) TQFN package.  
Longer Battery Life for Portable Applications  
• 2.2mA Operating Mode Current  
1μA Sleep Current  
The MAX11253 offers a 6.2nV/Hz noise programmable  
gain amplifier (PGA) with gain settings from 1x to 128x.  
The integrated PGA provides isolation of the signal inputs  
from the switched capacitor sampling network. The PGA  
also enables the MAX11253 to interface directly with  
high-impedance sources without compromising available  
dynamic range.  
Single or Split Analog Supplies Provide Input Voltage  
Range Flexibility  
• 2.7V to 3.6V (Single Supply) or ±1.8V (Split Supply)  
Enables System Integration  
• Low Noise, 6.2nV/Hz PGA with Gains of 1, 2, 4,  
8, 16, 32, 64, 128  
• 6-Channel, Fully Differential Input  
The MAX11253 operates from a single 2.7V to 3.6V  
analog supply, or split ±1.8V analog supplies, allowing  
the analog input to be sampled below ground. The digital  
supply range is 1.7V to 2.0V or 2.0V to 3.6V, allowing  
communication with 1.8V, 2.5V, 3V, or 3.3V logic.  
Enables On-Demand Device and System Gain and  
Offset Calibration  
• User-Programmable Offset and Gain Registers  
Robust Performance in a Small Package  
• -40°C to +125°C Operating Temperature Range  
• TQFN Package, 5mm x 5mm  
Applications  
Analog I/O for Programmable Logic Controllers  
Weigh Scales  
Pressure Sensors  
Battery-Powered Instrumentation  
Ordering Information appears at end of data sheet.  
Typical Application Circuit  
2.7V TO 3.6V  
REF  
2.0V TO 3.6V  
1µF  
10nF  
1µF  
REFN REFP  
AVDD  
DVDD  
AIN0P  
1nF  
C0G  
RSTB  
CSB  
AIN0N  
SCLK  
µC  
MAX11253  
DIN  
DOUT  
AIN5P  
RDYB  
1nF  
C0G  
AIN5N  
GPO0 GPO1 GPOGND CAPP CAPN CAPREG AVSS  
DGND  
220nF  
0603  
X7R  
1nF  
C0G  
RESISTIVE BRIDGE MEASUREMENT CIRCUIT, SPI CONFIGURATION  
19-7650; Rev 0; 6/15  

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