Overview
The LTC2335ILX-18 is an 18-bit, low noise, 8-channel multiplexed successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This ADC features differential inputs with a wide common mode range, making it suitable for a variety of high voltage applications. It operates from a 5V low voltage supply and can be configured to accept different input voltage ranges on a conversion-by-conversion basis, including ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V. The ADC also includes an internal 2.048V reference and a 2× buffer, which simplifies its operation and enhances its signal-to-noise ratio (SNR).
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 18 |
| Number of Channels | 8 |
| Sampling Rate | 1 Msps |
| Input Type | Differential |
| Input Voltage Range | ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V |
| Supply Voltage (Digital) | 5V |
| Supply Voltage (Analog) | 5V |
| Package | 48-Lead LQFP (7mm x 7mm) |
| Operating Temperature | -40°C to 85°C |
| SNR | 96.7 dB |
| INL (Integral Non-Linearity) | ±3 LSB |
| CMRR (Common Mode Rejection Ratio) | 118 dB |
| Data Interface | SPI CMOS (1.8V to 5V), LVDS |
Key Features
- 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 and enhanced SNR.
- Wide input common mode range and high CMRR, enabling direct digitization of various signals.
- No missing codes at 18 bits and low INL of ±3 LSB.
- Pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- Low noise and high speed operation, making it ideal for high voltage applications requiring wide dynamic range.
Applications
- High voltage measurement and monitoring systems.
- Industrial automation and control systems.
- Medical devices requiring precise signal acquisition.
- Aerospace and defense applications needing high accuracy and reliability.
- Test and measurement equipment.
Q & A
- What is the resolution of the LTC2335ILX-18 ADC?
The LTC2335ILX-18 has an 18-bit resolution.
- How many channels does the LTC2335ILX-18 ADC have?
The LTC2335ILX-18 has 8 channels.
- What is the sampling rate of the LTC2335ILX-18?
The sampling rate is 1 Msps (1 million samples per second).
- What are the input voltage ranges supported by the LTC2335ILX-18?
The ADC can accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals.
- What is the operating temperature range of the LTC2335ILX-18?
The operating temperature range is -40°C to 85°C.
- What data interfaces are supported by the LTC2335ILX-18?
The ADC supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- What is the common mode rejection ratio (CMRR) of the LTC2335ILX-18?
The CMRR is 118 dB.
- Does the LTC2335ILX-18 have an internal reference and buffer?
Yes, it includes an internal 2.048V reference and a 2× buffer.
- What is the signal-to-noise ratio (SNR) of the LTC2335ILX-18?
The SNR is 96.7 dB.
- Is the LTC2335ILX-18 RoHS compliant?
Yes, the LTC2335ILX-18 is lead-free and RoHS compliant.
