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MAX1452_09

更新时间： 2024-11-20 05:48:59
品牌 Logo 应用领域
美信 - MAXIM 传感器
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25页 178K
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Low-Cost Precision Sensor Signal Conditioner

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19-1829; Rev 2; 4/09  
Low-Cost Precision Sensor  
Signal Conditioner  
MAX1452  
General Description  
Features  
o Provides Amplification, Calibration, and  
The MAX1452 is a highly integrated analog-sensor sig-  
nal processor optimized for industrial and process con-  
trol applications utilizing resistive element sensors. The  
MAX1452 provides amplification, calibration, and tem-  
perature compensation that enables an overall perfor-  
mance approaching the inherent repeatability of the  
sensor. The fully analog signal path introduces no quan-  
tization noise in the output signal while enabling digitally  
controlled trimming with the integrated 16-bit DACs.  
Offset and span are calibrated using 16-bit DACs,  
allowing sensor products to be truly interchangeable.  
Temperature Compensation  
o Accommodates Sensor Output Sensitivities  
from 4mV/V to 60mV/V  
o Single Pin Digital Programming  
o No External Trim Components Required  
o 16-Bit Offset and Span Calibration Resolution  
o Fully Analog Signal Path  
o On-Chip Lookup Table Supports Multipoint  
The MAX1452 architecture includes a programmable  
sensor excitation, a 16-step programmable-gain ampli-  
fier (PGA), a 768-byte (6144 bits) internal EEPROM,  
four 16-bit DACs, an uncommitted op amp, and an on-  
chip temperature sensor. In addition to offset and span  
compensation, the MAX1452 provides a unique tem-  
perature compensation strategy for offset TC and  
FSOTC that was developed to provide a remarkable  
degree of flexibility while minimizing testing costs.  
Calibration Temperature Correction  
o Supports Both Current and Voltage Bridge  
Excitation  
o Fast 150µs Step Response  
o On-Chip Uncommitted Op Amp  
o Secure-Lock™ Prevents Data Corruption  
o Low 2mA Current Consumption  
The MAX1452 is packaged for the commercial, industri-  
al, and automotive temperature ranges in 16-pin SSOP/  
TSSOP and 24-pin TQFN packages.  
Customization  
Ordering Information  
Maxim can customize the MAX1452 for high-volume  
dedicated applications. Using our dedicated cell library  
of more than 2000 sensor-specific functional blocks,  
Maxim can quickly provide a modified MAX1452 solu-  
tion. Contact Maxim for further information.  
PART  
TEMP RANGE  
0°C to +70°C  
PIN-PACKAGE  
16 SSOP  
MAX1452CAE+  
MAX1452EAE+  
MAX1452AAE+  
MAX1452AUE+  
MAX1452ATG+  
MAX1452C/D  
-40°C to +85°C  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
0°C to +70°C  
16 SSOP  
16 SSOP  
16 TSSOP  
24 TQFN-EP*  
Dice**  
Applications  
Pressure Sensors  
Transducers and Transmitters  
Strain Gauges  
Pressure Calibrators and Controllers  
Resistive Elements Sensors  
Accelerometers  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
**Dice are tested at T = +25°C, DC parameters only.  
A
Detailed Block Diagram and Pin Configurations appear at  
the end of data sheet.  
Humidity Sensors  
Outputs Supported  
4–20mA  
0 to +5V (rail-to-rail)  
+0.5V to +4.5V Ratiometric  
+2.5V to 2.5V  
Secure-Lock is a trademark of Maxim Integrated Products.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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