Overview
The LTC2378IMS-20#PBF is a high-performance, 20-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is renowned for its low noise, low power consumption, and high speed, making it ideal for a wide range of high-speed applications. Operating from a single 2.5V supply, the LTC2378-20 features a fully differential input range and supports a high-speed SPI-compatible serial interface.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 20 bits |
| Sample Rate | 1 Msps |
| Supply Voltage | 2.5V |
| Input Range | ±5V fully differential |
| Reference Voltage Range | 2.5V to 5.1V |
| Power Consumption | 21mW |
| Integral Nonlinearity (INL) | ±2ppm max |
| Signal-to-Noise Ratio (SNR) | 104dB |
| Interface | SPI-compatible serial interface (1.8V, 2.5V, 3.3V, 5V logic) |
| Package | 16-Lead MSOP |
| Temperature Range | -40°C to 85°C |
Key Features
- Low noise and low power consumption, making it suitable for power-sensitive applications.
- High-speed SPI-compatible serial interface supporting multiple logic levels (1.8V, 2.5V, 3.3V, 5V).
- Digital gain compression (DGC) function, which eliminates the need for a negative supply voltage while preserving full resolution.
- No missing codes at 20 bits and ±2ppm INL maximum.
- Internal oscillator for setting conversion time, reducing external timing considerations.
- Automatic power-down between conversions to reduce power dissipation.
- Daisy-chain mode for multiple device operation.
Applications
- High-speed data acquisition systems.
- Medical imaging and diagnostics.
- Aerospace and defense applications requiring high precision and low power.
- Industrial automation and control systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the LTC2378-20 ADC?
The LTC2378-20 has a resolution of 20 bits.
- What is the sample rate of the LTC2378-20?
The sample rate of the LTC2378-20 is 1 Msps.
- What is the supply voltage for the LTC2378-20?
The LTC2378-20 operates from a single 2.5V supply.
- What is the input range of the LTC2378-20?
The LTC2378-20 supports a ±5V fully differential input range.
- What is the power consumption of the LTC2378-20?
The power consumption of the LTC2378-20 is 21mW.
- Does the LTC2378-20 have any special power-saving features?
Yes, the LTC2378-20 automatically powers down between conversions to reduce power dissipation.
- What is the signal-to-noise ratio (SNR) of the LTC2378-20?
The SNR of the LTC2378-20 is 104dB.
- Does the LTC2378-20 support multiple logic levels for its serial interface?
Yes, the LTC2378-20 supports 1.8V, 2.5V, 3.3V, and 5V logic levels for its SPI-compatible serial interface.
- What is the purpose of the digital gain compression (DGC) function in the LTC2378-20?
The DGC function eliminates the need for a negative supply voltage while preserving the full resolution of the ADC.
- What package options are available for the LTC2378-20?
The LTC2378-20 is available in a 16-Lead MSOP package.
