Overview
The LTC2335-18 is an 18-bit, low noise, 8-channel multiplexed successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is characterized by its differential, wide common mode range inputs and flexible SoftSpan™ interface, which allows for conversion-by-conversion control of the input voltage span on a per-channel basis. It operates from a 5V low voltage supply and supports flexible high voltage supplies. The ADC can be configured to accept various input ranges such as ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V on any channel, making it highly versatile for various high voltage applications requiring wide dynamic range.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 18 bits | |||
| Sampling Rate | 1 Msps | |||
| Number of Channels | 8 | |||
| Input Voltage Range | ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V | V | ||
| Integral Nonlinearity (INL) | ±3 LSB | LSB | ||
| Signal-to-Noise Ratio (SNR) | 96.7 dB | dB | ||
| Common Mode Rejection Ratio (CMRR) | 118 dB | dB | ||
| Supply Voltage (VCC) | 0 | 5 | V | |
| Package Type | 48-Lead LQFP (7mm x 7mm) | |||
Key Features
- Differential, wide common mode range inputs with 118dB CMRR.
- Flexible SoftSpan™ interface allowing conversion-by-conversion control of the input voltage span.
- Supports various input ranges: ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V on any channel.
- Low noise operation with ±3LSB INL and no missing codes at 18 bits.
- High signal-to-noise ratio (SNR) of 96.7 dB.
- Pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- Internal 2.048V reference and 2× buffer for simplified operation.
Applications
- High voltage applications requiring wide dynamic range.
- Automotive systems, including electronic cockpit solutions, battery management systems (BMS), motor/electric drive sensors, and autonomous driving solutions.
- Industrial automation and control systems.
- Medical devices requiring high precision and low noise ADCs.
- Test and measurement equipment.
Q & A
- What is the resolution of the LTC2335-18 ADC?
The LTC2335-18 has a resolution of 18 bits.
- What is the sampling rate of the LTC2335-18?
The sampling rate of the LTC2335-18 is 1 Msps.
- How many channels does the LTC2335-18 support?
The LTC2335-18 supports 8 channels.
- What are the input voltage ranges supported by the LTC2335-18?
The LTC2335-18 supports input voltage ranges of ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V on any channel.
- What is the integral nonlinearity (INL) of the LTC2335-18?
The integral nonlinearity (INL) of the LTC2335-18 is ±3 LSB.
- What is the signal-to-noise ratio (SNR) of the LTC2335-18?
The signal-to-noise ratio (SNR) of the LTC2335-18 is 96.7 dB.
- What is the common mode rejection ratio (CMRR) of the LTC2335-18?
The common mode rejection ratio (CMRR) of the LTC2335-18 is 118 dB.
- What serial interfaces are supported by the LTC2335-18?
The LTC2335-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- Does the LTC2335-18 have an internal reference and buffer?
Yes, the LTC2335-18 has an internal 2.048V reference and 2× buffer for simplified operation.
- What is the package type of the LTC2335-18?
The LTC2335-18 is available in a 48-Lead LQFP (7mm x 7mm) package.
