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LTC2420CS8 from LT

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LTC2420CS8

Manufacturer: LT

20-Bit uPower No Latency ADC in SO-8

Partnumber Manufacturer Quantity Availability
LTC2420CS8 LT 577 In Stock

Description and Introduction

20-Bit uPower No Latency ADC in SO-8 The LTC2420CS8 is a high-performance, 20-bit delta-sigma analog-to-digital converter (ADC) manufactured by Linear Technology (now part of Analog Devices).  

### **Specifications:**  
- **Resolution:** 20 bits  
- **Input Type:** Differential  
- **Input Voltage Range:** ±VREF  
- **Reference Voltage:** External (typically 2.5V or 5V)  
- **Supply Voltage:** 2.7V to 5.5V  
- **Conversion Rate:** 3.5 samples per second (typ)  
- **Noise-Free Resolution:** 20 bits at 1.7Hz  
- **Integral Nonlinearity (INL):** ±2ppm of FSR (max)  
- **Power Consumption:** 200µA (typ)  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package:** 8-Lead SOIC  

### **Descriptions and Features:**  
- **High Accuracy:** Provides 20-bit resolution with no missing codes and low noise.  
- **Differential Input:** Supports true differential input signals.  
- **Internal Oscillator:** No external clock required.  
- **Single-Cycle Settling:** Output settles in a single conversion cycle.  
- **Flexible Power Supply:** Operates from a single 2.7V to 5.5V supply.  
- **Low Power:** Consumes only 200µA, making it suitable for battery-powered applications.  
- **SPI-Compatible Serial Interface:** Easy interfacing with microcontrollers.  
- **No Latency:** No pipeline delay in conversion results.  

The LTC2420CS8 is commonly used in precision measurement applications, including industrial process control, instrumentation, and medical equipment.

Application Scenarios & Design Considerations

20-Bit uPower No Latency ADC in SO-8

Alternative Part Number

  • AD7690BRMZ --: Pin-compatible 18-bit SAR ADC in MSOP with similar serial interface; ADI acquired Linear Technology so support and supply are aligned.
  • MCP3421A0T-E/CH --: Low-power 18-bit delta-sigma ADC with I2C interface, suitable for low-speed precision measurement replacement.
  • ADS1115IDGSR --: 16-bit delta-sigma ADC with I2C and PGA, widely available and easy drop-in for low-frequency sensing applications.
  • AD7705BRZ --: 16-bit sigma-delta ADC with similar SPI interface and low-power operation, suitable replacement for low-speed precision measurement applications.

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