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LTC2431IMS from LINEAR

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LTC2431IMS

Manufacturer: LINEAR, LT

20-Bit No Latency Delta Sigma ADCs with Differential Input and Differential Reference

Partnumber Manufacturer Quantity Availability
LTC2431IMS LINEAR, LT 124 In Stock

Description and Introduction

20-Bit No Latency Delta Sigma ADCs with Differential Input and Differential Reference The LTC2431IMS is a high-performance 24-bit delta-sigma analog-to-digital converter (ADC) manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Resolution:** 24 bits  
- **Input Type:** Differential  
- **Input Voltage Range:** ±VREF (programmable)  
- **Reference Voltage:** External (supports up to 5V)  
- **Supply Voltage:** 2.7V to 5.5V  
- **Conversion Rate:** Programmable (1.7Hz to 3.5Hz)  
- **Noise Performance:** 0.5μVRMS (at 1.7Hz)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-Lead MSOP  

### **Descriptions:**  
The LTC2431IMS is a low-noise, high-resolution ADC designed for precision measurement applications. It features an integrated oscillator, eliminating the need for an external clock. The device includes a flexible differential input and operates with a wide supply voltage range, making it suitable for battery-powered and industrial systems.  

### **Features:**  
- **No Latency:** Provides accurate conversions without settling time.  
- **Internal Oscillator:** No external clock required.  
- **Programmable Data Rate:** Adjustable conversion speed.  
- **Low Power Consumption:** 200μA (typical) at 3V.  
- **SPI-Compatible Serial Interface:** Easy interfacing with microcontrollers.  
- **Auto-Calibration:** Eliminates offset and full-scale errors.  
- **Direct Sensor Interface:** Works with thermocouples, RTDs, and bridge sensors.  

For detailed application-specific information, refer to the official datasheet from Analog Devices (formerly Linear Technology).

Application Scenarios & Design Considerations

20-Bit No Latency Delta Sigma ADCs with Differential Input and Differential Reference

Alternative Part Number

  • AD7790BRMZ --: Pin-compatible 16-bit sigma-delta ADC in MSOP with similar low-power single-channel architecture, direct functional replacement from the same parent company.
  • MCP3421A0T-E/CH --: 18-bit single-channel delta-sigma ADC in SOT-23 with I2C interface, suitable low-speed precision measurement alternative with lower pin count.
  • ADS1115IDGSR --: 16-bit delta-sigma ADC with I2C and PGA in VSSOP, widely available and offers comparable resolution for low-frequency sensor applications.
  • AD7780BRUZ --: Pin-compatible 24-bit sigma-delta ADC with similar low-noise performance and SPI interface, suitable drop-in replacement for precision measurement applications.
  • ADS1220IPW --: 24-bit low-power delta-sigma ADC with PGA and SPI, providing similar functionality and precision for industrial and instrumentation applications.

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