Overview
The LTC2377CDE-20#TRPBF is a high-performance, low noise, and low power 20-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This ADC operates from a single 2.5V supply and features a ±VREF fully differential input range, with VREF ranging from 2.5V to 5.1V. It is designed for high-speed applications, offering a fast 500ksps throughput with no cycle latency and a high speed SPI-compatible serial interface that supports various logic levels (1.8V, 2.5V, 3.3V, and 5V). The device also includes a unique digital gain compression (DGC) function, which eliminates the need for a negative supply voltage for the driver amplifier while preserving the full resolution of the ADC.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 20 bits |
| Sampling Rate | 500 kS/s |
| Analog Supply Voltage | 2.5 V |
| Input Type | Differential |
| Architecture | SAR (Successive Approximation Register) |
| Reference Type | External |
| Package / Case | 16-Lead DFN (4mm x 3mm w/ EP) |
| Power Dissipation | 10.5 mW |
| Integral Nonlinearity (INL) | ±2 ppm maximum |
| Signal to Noise and Distortion Ratio (SINAD) | 104 dB |
| Operating Temperature | 0°C to 70°C |
| Data Interface | SPI-compatible serial interface |
Key Features
- High-speed SPI-compatible serial interface supporting 1.8V, 2.5V, 3.3V, and 5V logic levels.
- Daisy-chain mode for multiple device operation.
- Internal oscillator for setting conversion time, reducing external timing considerations.
- Automatic power-down between conversions to reduce power dissipation.
- Unique digital gain compression (DGC) function to eliminate the need for a negative supply voltage for the driver amplifier.
- No missing codes at 20 bits and ±2 ppm INL maximum.
- Low power consumption of 10.5 mW.
Applications
- High-speed data acquisition systems.
- Medical imaging and diagnostic equipment.
- Industrial control and automation systems.
- Aerospace and defense applications requiring high precision and low power consumption.
- Test and measurement instruments.
Q & A
- What is the resolution of the LTC2377CDE-20#TRPBF ADC?
The LTC2377CDE-20#TRPBF has a resolution of 20 bits.
- What is the sampling rate of the LTC2377CDE-20#TRPBF?
The sampling rate is 500 kS/s.
- What is the analog supply voltage for the LTC2377CDE-20#TRPBF?
The analog supply voltage is 2.5 V.
- What type of input does the LTC2377CDE-20#TRPBF support?
The input type is differential.
- What is the architecture of the LTC2377CDE-20#TRPBF ADC?
The architecture is Successive Approximation Register (SAR).
- What is the power dissipation of the LTC2377CDE-20#TRPBF?
The power dissipation is 10.5 mW.
- Does the LTC2377CDE-20#TRPBF have any special power-saving features?
Yes, it automatically powers down between conversions to reduce power dissipation.
- What is the unique digital gain compression (DGC) function in the LTC2377CDE-20#TRPBF?
The DGC function eliminates the need for a negative supply voltage for the driver amplifier while preserving the full resolution of the ADC.
- What is the operating temperature range of the LTC2377CDE-20#TRPBF?
The operating temperature range is 0°C to 70°C.
- What type of data interface does the LTC2377CDE-20#TRPBF support?
The data interface is SPI-compatible serial interface.
