Overview
The LTC2377-20, produced by Analog Devices Inc., is a high-performance, low-power, 20-bit successive approximation register (SAR) analog-to-digital converter (ADC). This device operates from a single 2.5V supply and is designed for high-speed, low-noise applications. It features a fully differential input range with a reference voltage (VREF) that can range from 2.5V to 5.1V. The ADC is known for its low power consumption, achieving only 10.5mW, and its high signal-to-noise ratio (SNR) of 104dB. The LTC2377-20 is ideal for various high-speed applications due to its fast 500ksps throughput and no cycle latency.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 20 bits |
| Sample Rate | 500ksps |
| Supply Voltage | 2.5V |
| Input Range | ±VREF (VREF: 2.5V to 5.1V) |
| Power Consumption | 10.5mW |
| Integral Nonlinearity (INL) | ±2ppm maximum |
| Signal-to-Noise Ratio (SNR) | 104dB |
| Interface | SPI-compatible serial interface (1.8V, 2.5V, 3.3V, 5V logic) |
| Package | 16-Lead MSOP |
| Operating Temperature Range | 0°C to 70°C (commercial grade) |
Key Features
- Low Noise and Low Power: The LTC2377-20 is designed for low noise and low power consumption, making it suitable for power-sensitive applications.
- High Speed: It features a fast 500ksps throughput with no cycle latency, ideal for high-speed data acquisition.
- Digital Gain Compression (DGC): The ADC includes a unique DGC function that eliminates the need for a negative supply voltage while preserving full resolution.
- SPI-Compatible Interface: Supports 1.8V, 2.5V, 3.3V, and 5V logic levels and includes a daisy-chain mode.
- Internal Oscillator: An internal oscillator sets the conversion time, simplifying external timing considerations.
- Automatic Power Down: The ADC automatically powers down between conversions to reduce power dissipation.
Applications
- High-Speed Data Acquisition Systems: Ideal for applications requiring fast and accurate data conversion.
- Medical Devices: Suitable for medical imaging and diagnostic equipment due to its high resolution and low noise.
- Industrial Automation: Used in control systems and monitoring applications where high accuracy and speed are required.
- Aerospace and Defense: Applicable in various military and aerospace applications where low power and high performance are critical.
- Scientific Instruments: Utilized in precision measurement instruments such as spectrometers and analyzers.
Q & A
- What is the resolution of the LTC2377-20 ADC?
The LTC2377-20 has a resolution of 20 bits. - What is the sample rate of the LTC2377-20?
The sample rate of the LTC2377-20 is 500ksps. - What is the supply voltage for the LTC2377-20?
The supply voltage for the LTC2377-20 is 2.5V. - What is the input range of the LTC2377-20?
The input range is ±VREF with VREF ranging from 2.5V to 5.1V. - How much power does the LTC2377-20 consume?
The LTC2377-20 consumes 10.5mW. - What is the integral nonlinearity (INL) of the LTC2377-20?
The INL is ±2ppm maximum. - What is the signal-to-noise ratio (SNR) of the LTC2377-20?
The SNR is 104dB. - What type of interface does the LTC2377-20 use?
The LTC2377-20 uses a SPI-compatible serial interface supporting 1.8V, 2.5V, 3.3V, and 5V logic levels. - What is the package type of the LTC2377-20?
The package type is 16-Lead MSOP. - Does the LTC2377-20 have an internal oscillator?
Yes, the LTC2377-20 has an internal oscillator that sets the conversion time.
