Overview
The LTC2379-18, produced by Analog Devices Inc., is a high-performance, low noise, and low power 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). This component is designed to operate from a single 2.5V supply and features a high speed SPI-compatible serial interface, making it suitable for a wide range of high-speed applications. The ADC achieves a high signal-to-noise ratio (SNR) of 101.2dB and consumes only 18mW of power, with automatic power-down between conversions to reduce power dissipation.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 18 |
| Sampling Rate | 1.6Msps |
| Supply Voltage | 2.5V |
| Input Range | ±VREF (2.5V to 5.1V) |
| SNR | 101.2dB |
| INL (Integral Non-Linearity) | ±2LSB |
| Power Consumption | 18mW |
| Package | 16-Lead DFN (4mm x 3mm w/ EP), 16-Lead MSOP |
| Interface | SPI-compatible serial interface (1.8V, 2.5V, 3.3V, 5V logic) |
Key Features
- High speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3.3V, and 5V logic.
- Daisychain mode for multiple ADCs.
- Internal oscillator for setting conversion time, eliminating external timing needs.
- Automatic power-down between conversions to reduce power dissipation.
- Digital gain compression (DGC) function to eliminate the need for a negative supply voltage while preserving full resolution.
- No cycle latency and fast 1.6Msps throughput.
Applications
The LTC2379-18 is ideally suited for a variety of high-speed applications, including data acquisition systems, medical devices, industrial control systems, and any environment where high precision and low power consumption are critical. Its high SNR and low power characteristics make it particularly useful in applications requiring accurate and efficient analog-to-digital conversion.
Q & A
- What is the resolution of the LTC2379-18 ADC?
The LTC2379-18 is an 18-bit successive approximation register (SAR) ADC. - What is the maximum sampling rate of the LTC2379-18?
The maximum sampling rate is 1.6Msps. - What is the supply voltage for the LTC2379-18?
The LTC2379-18 operates from a single 2.5V supply. - What is the input range of the LTC2379-18?
The input range is ±VREF with VREF ranging from 2.5V to 5.1V. - What is the signal-to-noise ratio (SNR) of the LTC2379-18?
The SNR is 101.2dB. - How much power does the LTC2379-18 consume?
The power consumption is 18mW. - What types of packages are available for the LTC2379-18?
The LTC2379-18 is available in 16-Lead DFN (4mm x 3mm w/ EP) and 16-Lead MSOP packages. - Does the LTC2379-18 support daisychain mode?
Yes, the LTC2379-18 supports daisychain mode for multiple ADCs. - What is the purpose of the digital gain compression (DGC) function in the LTC2379-18?
The DGC function eliminates the need for a negative supply voltage while preserving the full resolution of the ADC. - How does the LTC2379-18 manage power consumption during idle periods?
The LTC2379-18 automatically powers down between conversions to reduce power dissipation.
