Overview
The LTC2341HUH-18 is a dual, 18-bit, successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed for high-speed and low-noise applications, featuring simultaneous sampling of two channels. It operates from a 5V supply and can be configured to accept various input ranges, including ±4.096V, 0V to 4.096V, ±2.048V, and 0V to 2.048V, on a conversion-by-conversion basis. The LTC2341HUH-18 is part of the SoftSpan™ ADC family, known for its wide input common mode range and high common mode rejection ratio (CMRR) of 105dB, making it suitable for a variety of signal digitization tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 18 |
| Sampling Rate | 666 kS/s per channel |
| Number of Channels | 2 |
| Input Type | Differential |
| Data Interface | LVDS - Serial, SPI |
| Configuration | S/H-MUX-ADC |
| Architecture | SAR |
| Reference Type | Internal, External |
| Voltage - Supply, Analog | 4.75 V ~ 5.25 V |
| Voltage - Supply, Digital | 4.75 V ~ 5.25 V |
| Operating Temperature | -40°C ~ 125°C |
| Package / Case | 32-WFQFN Exposed Pad |
| INL - Integral Nonlinearity | ±4 LSB |
| DNL - Differential Nonlinearity | 0.5 LSB |
| SINAD - Signal to Noise and Distortion Ratio | 95 dB |
| THD - Total Harmonic Distortion | -114 dB |
Key Features
- Simultaneous sampling of two channels at 666 kS/s each.
- Differential, wide common mode range inputs with 105dB CMRR.
- Flexible SoftSpan™ input ranges: ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V.
- Pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- Option to disable one channel to increase throughput on the other channel.
- No missing codes at 18 bits and ±4LSB INL.
- Low noise operation with 95dB SNR.
- Compact 32-WFQFN Exposed Pad package.
Applications
The LTC2341HUH-18 is suitable for various applications requiring high-speed, low-noise, and wide dynamic range signal digitization. These include:
- Industrial control systems.
- Medical imaging and diagnostics.
- Aerospace and defense systems.
- High-performance data acquisition systems.
- Automotive and automotive safety systems.
Q & A
- What is the resolution of the LTC2341HUH-18 ADC?
The LTC2341HUH-18 has a resolution of 18 bits.
- What is the sampling rate of the LTC2341HUH-18?
The sampling rate is 666 kS/s per channel.
- What types of input signals can the LTC2341HUH-18 accept?
The LTC2341HUH-18 can accept differential input signals with ranges of ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V.
- What are the available data interfaces for the LTC2341HUH-18?
The available data interfaces are SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- What is the common mode rejection ratio (CMRR) of the LTC2341HUH-18?
The CMRR is 105dB.
- Can one channel be disabled to increase throughput on the other channel?
- What is the signal to noise and distortion ratio (SINAD) of the LTC2341HUH-18?
The SINAD is 95 dB.
- What is the total harmonic distortion (THD) of the LTC2341HUH-18?
The THD is -114 dB.
- What is the operating temperature range of the LTC2341HUH-18?
The operating temperature range is -40°C to 125°C.
- What is the package type of the LTC2341HUH-18?
The package type is 32-WFQFN Exposed Pad.
