Overview
The LTC2344CUH-18 is a quad-channel, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the LTC2344-18 series and is known for its low noise, high speed, and simultaneous sampling capabilities. It operates from a 5V supply and features differential, wide common mode range inputs. Each channel can be independently configured on a conversion-by-conversion basis to accept various input signal ranges, including ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V. The LTC2344CUH-18 is ideal for applications requiring wide dynamic range and high precision.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Resolution | 18 bits | |
| Number of Channels | 4 | |
| Sampling Rate | 400 ksps per channel | |
| Analog Supply Voltage | 5V | |
| Digital Supply Voltage | 1.8V to 5V | |
| Input Voltage Range | ±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V | Per channel, configurable |
| Integral Nonlinearity (INL) | ±4 LSB (maximum) | |
| Signal-to-Noise Ratio (SNR) | 95 dB (typical) | |
| Common Mode Rejection Ratio (CMRR) | 102 dB | |
| Operating Temperature Range | -40°C to 125°C | |
| Package | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) |
Key Features
- Simultaneous sampling of four channels
- Differential, wide common mode range inputs
- Independent channel configuration for input voltage range on a conversion-by-conversion basis
- Internal 2.048V reference and 2× buffer
- Pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces
- Flexible data output modes: one to four lanes in CMOS mode
- No missing codes at 18 bits
- Low noise and high linearity
Applications
- Industrial automation and control systems
- High-speed imaging and instrumentation
- Communications applications requiring wide dynamic range and significant signal bandwidth
- Medical imaging and diagnostic equipment
- High-speed control loop applications
Q & A
- What is the resolution of the LTC2344CUH-18 ADC?
The LTC2344CUH-18 has a resolution of 18 bits.
- How many channels does the LTC2344CUH-18 ADC have?
The LTC2344CUH-18 has four simultaneous sampling channels.
- What is the sampling rate of the LTC2344CUH-18 ADC?
The sampling rate is 400 ksps per channel.
- What are the input voltage ranges supported by the LTC2344CUH-18?
The input voltage ranges include ±4.096V, 0V to 4.096V, ±2.048V, and 0V to 2.048V, configurable on a per-channel basis.
- What is the common mode rejection ratio (CMRR) of the LTC2344CUH-18?
The CMRR is 102 dB.
- What are the supported digital interfaces for the LTC2344CUH-18?
The device supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- Can the data output lanes be configured?
- What is the operating temperature range of the LTC2344CUH-18?
The operating temperature range is -40°C to 125°C.
- What package type is the LTC2344CUH-18 available in?
The device is available in a 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) package.
- Does the LTC2344CUH-18 have any missing codes at 18 bits?
No, the LTC2344CUH-18 guarantees no missing codes at 18 bits.
