Overview
The LTC2335HLX-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, wide common mode range inputs and operates from a 5V low voltage supply. The SoftSpan™ feature allows the ADC to be configured on a conversion-by-conversion basis to accept various input signal ranges, including ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V on any channel. This flexibility, combined with its high precision and low noise characteristics, makes the LTC2335HLX-18 an ideal choice for high voltage applications requiring wide dynamic range.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 18 | |
| Number of Channels | 8 | |
| Sampling Rate | 1 Msps | |
| Input Type | Differential/Pseudo-Differential/Single-Ended | |
| Input Voltage Range | ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V | V |
| Integral Nonlinearity (INL) | ±3 LSB | |
| Signal-to-Noise Ratio (SNR) | 96.7 dB | dB |
| Common Mode Rejection Ratio (CMRR) | 118 dB | dB |
| Supply Voltage (Analog) | 5 V | V |
| Supply Voltage (Digital) | 5 V | V |
| Operating Temperature | -40°C to 125°C | °C |
| Package/Case | 48-LQFP (7x7) | |
| Data Interface | SPI CMOS (1.8V to 5V), LVDS |
Key Features
- 18-bit resolution with no missing codes.
- Low noise and high precision with ±3 LSB INL.
- SoftSpan™ feature for flexible input voltage range configuration on a conversion-by-conversion basis.
- Differential, wide common mode range inputs with 118 dB CMRR.
- Support for SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- Internal 2.048V reference and 2× buffer for simplified operation.
- Option to use an external reference to increase input range and SNR.
- Operating temperature range of -40°C to 125°C.
Applications
The LTC2335HLX-18 is suitable for a variety of high voltage applications that require wide dynamic range and high precision. These include:
- Industrial automation and control systems.
- Medical devices requiring precise signal measurement.
- Aerospace and defense applications where high accuracy is critical.
- Test and measurement equipment.
- Automotive systems, especially those involving high voltage sensors.
Q & A
- What is the resolution of the LTC2335HLX-18 ADC?
The LTC2335HLX-18 has an 18-bit resolution.
- How many channels does the LTC2335HLX-18 support?
The LTC2335HLX-18 supports 8 channels.
- What is the sampling rate of the LTC2335HLX-18?
The sampling rate is 1 Msps (1 million samples per second).
- What are the supported input voltage ranges for the LTC2335HLX-18?
The supported input voltage ranges include ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V.
- What is the common mode rejection ratio (CMRR) of the LTC2335HLX-18?
The CMRR is 118 dB.
- What data interfaces are supported by the LTC2335HLX-18?
The ADC supports SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- Can the LTC2335HLX-18 use an external reference?
- What is the operating temperature range of the LTC2335HLX-18?
The operating temperature range is -40°C to 125°C.
- What package type is the LTC2335HLX-18 available in?
The LTC2335HLX-18 is available in a 48-LQFP (7x7) package.
- Does the LTC2335HLX-18 have any specific power supply requirements?
The ADC operates from a 5V low voltage supply for both analog and digital sections.
