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MAX145ACUA from MAXI,MAXIM - Dallas Semiconductor

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MAX145ACUA

Manufacturer: MAXI, MAXIM

+2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin レMAX

Partnumber Manufacturer Quantity Availability
MAX145ACUA MAXI, MAXIM 1323 In Stock

Description and Introduction

+2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin レMAX The MAX145ACUA is a signal conditioner for piezoresistive sensors manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX145ACUA  
- **Package:** 8-pin µMAX (microMAX)  
- **Operating Voltage Range:** 4.5V to 5.5V  
- **Operating Temperature Range:** -40°C to +125°C  
- **Sensor Excitation Current:** Programmable up to 2mA  
- **Gain Accuracy:** ±0.1% (typical)  
- **Offset Compensation Range:** ±60mV (typical)  
- **Output Voltage Range:** 0V to VDD  
- **Digital Calibration:** Via an external microcontroller  

### **Descriptions:**  
The MAX145ACUA is a high-precision analog sensor signal conditioner designed for piezoresistive sensors, such as pressure sensors. It provides amplification, calibration, and temperature compensation to improve sensor accuracy. The device includes a programmable sensor excitation current, offset and span calibration, and temperature compensation through an internal or external temperature sensor.  

### **Features:**  
- **Integrated Signal Conditioning:** Amplifies and compensates sensor signals.  
- **Digital Calibration Interface:** Allows external microcontroller-based calibration.  
- **Programmable Gain and Offset:** Adjustable via external EEPROM or microcontroller.  
- **Low-Power Operation:** Suitable for battery-powered applications.  
- **Temperature Compensation:** Compensates for sensor drift over temperature.  
- **Small Form Factor:** 8-pin µMAX package for space-constrained designs.  

For detailed application notes and schematics, refer to the official datasheet from Analog Devices (formerly Maxim Integrated).

Application Scenarios & Design Considerations

+2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin レMAX

Alternative Part Number

  • AD7811YN --: Pin-compatible 8-channel 12-bit ADC with similar serial interface and supply range, widely available as a direct functional substitute.
  • LTC1298CN8 --: Low-power 12-bit serial ADC offering comparable resolution and sampling performance in an 8-pin package.
  • TLC2543CN --: 11-channel 12-bit SPI ADC with similar resolution and interface, suitable when extra input channels are acceptable.
  • AD781ANZ --: Pin-compatible 8-channel sample-and-hold amplifier with similar acquisition time and supply range, widely available and often used as a direct substitute.
  • LF198H --: Monolithic sample-and-hold amplifier with comparable hold accuracy and droop, suitable for replacing the MAX145 in data acquisition circuits.
  • SHM-5 --: Industry-standard sample-and-hold module with equivalent function and timing characteristics, usable as a drop-in functional replacement.

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