Overview
The LTC2345HUK-18#TRPBF is an 18-bit, low noise, octal-channel simultaneous sampling successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the LTC2345 family and is known for its high precision and flexibility in signal processing. It operates from a 5V low voltage supply and features an internal 2.048V reference and buffer, which simplifies its basic operation. The ADC is designed to handle a wide range of input signals, making it suitable for various applications requiring high dynamic range and precision.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Number of Channels | 8 channels |
| Sampling Rate | 200 ksps per channel |
| Input Type | Differential |
| Input Voltage Range | ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V (per channel) |
| Supply Voltage | 5V |
| Package | 48-Lead QFN (7mm x 7mm x 0.75mm with exposed pad) |
| Data Interface | LVDS - Serial, SPI (pin-selectable) |
| Integral Non-Linearity (INL) | ±5 LSB |
| Signal-to-Noise Ratio (SNR) | 91.8 dB |
| Common Mode Rejection Ratio (CMRR) | 102 dB |
Key Features
- Simultaneous sampling of all 8 channels
- Flexible SoftSpan™ interface allowing conversion-by-conversion control of the input voltage span on a per-channel basis
- Internal 2.048V reference and 2× buffer for simplified operation
- Wide input common mode range and high CMRR for direct digitization of various signals
- No missing codes at 18 bits and low noise operation
- Pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces
- Ability to disable individual channels to increase throughput on remaining channels
Applications
The LTC2345HUK-18#TRPBF is ideal for applications requiring high precision and wide dynamic range, such as:
- Industrial process control and monitoring
- Medical imaging and diagnostics
- Aerospace and defense systems
- Automotive systems, especially those requiring simultaneous sampling of multiple signals
- Test and measurement equipment
Q & A
- What is the resolution of the LTC2345HUK-18#TRPBF ADC?
The resolution is 18 bits.
- How many channels does the LTC2345HUK-18#TRPBF support?
It supports 8 channels.
- What is the sampling rate of the LTC2345HUK-18#TRPBF?
The sampling rate is 200 ksps per channel.
- What types of input signals can the LTC2345HUK-18#TRPBF handle?
The ADC can handle differential input signals with various voltage ranges (±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V) on a per-channel basis.
- What is the supply voltage for the LTC2345HUK-18#TRPBF?
The supply voltage is 5V.
- What package type is the LTC2345HUK-18#TRPBF available in?
The device is available in a 48-Lead QFN package (7mm x 7mm x 0.75mm with exposed pad).
- What data interfaces does the LTC2345HUK-18#TRPBF support?
The device supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- What is the Integral Non-Linearity (INL) of the LTC2345HUK-18#TRPBF?
The INL is ±5 LSB.
- What is the Signal-to-Noise Ratio (SNR) of the LTC2345HUK-18#TRPBF?
The SNR is 91.8 dB.
- What is the Common Mode Rejection Ratio (CMRR) of the LTC2345HUK-18#TRPBF?
The CMRR is 102 dB.
