Overview
The LTC2358-18 is a high-performance, 18-bit, low-noise, 8-channel simultaneous sampling successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the SoftSpan™ family, offering flexible input ranges and high voltage capabilities. It operates from a 5V low voltage supply and can accept a variety of input signal ranges, including ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V, making it ideal for applications requiring wide dynamic range and high accuracy.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18 bits |
| Number of Channels | 8 |
| Sampling Rate | 200 ksps per channel |
| Input Range | ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V |
| Common Mode Range | 30Vpp |
| Integral Non-Linearity (INL) | ±3.5 LSB |
| Signal-to-Noise Ratio (SNR) | 96.4 dB |
| Supply Voltage (VCC) | -0.3V to (VEE + 40V) |
| Supply Voltage (VEE) | -17.4V to 0.3V |
| Supply Voltage Difference (VCC - VEE) | 40V |
| Package | 48-Lead LQFP (7mm x 7mm) |
Key Features
- Buffered differential inputs with picoamp input currents and 128dB common-mode rejection ratio (CMRR)
- Flexible input ranges configurable on a conversion-by-conversion basis
- Simultaneous sampling of all 8 channels
- Pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces
- Optional use of one to eight lanes of data output in CMOS mode for optimized bus width and throughput
- No missing codes at 18 bits and low noise performance
Applications
- High voltage measurement systems
- Industrial control and automation
- Medical devices requiring high accuracy and low noise
- Aerospace and defense applications
- Test and measurement equipment
Q & A
- What is the resolution of the LTC2358-18 ADC?
The LTC2358-18 has an 18-bit resolution. - How many channels does the LTC2358-18 support?
The LTC2358-18 supports 8 simultaneous sampling channels. - What are the input range options for the LTC2358-18?
The input ranges include ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V. - What is the common mode range of the LTC2358-18?
The common mode range is 30Vpp. - What is the integral non-linearity (INL) of the LTC2358-18?
The INL is ±3.5 LSB. - What is the signal-to-noise ratio (SNR) of the LTC2358-18?
The SNR is 96.4 dB. - What are the supply voltage ranges for the LTC2358-18?
The supply voltage ranges are -0.3V to (VEE + 40V) for VCC and -17.4V to 0.3V for VEE. - What is the package type of the LTC2358-18?
The package is a 48-Lead LQFP (7mm x 7mm). - Does the LTC2358-18 support multiple serial interfaces?
Yes, it supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. - Can the data output lanes be configured in CMOS mode?
Yes, the user can employ one to eight lanes of data output in CMOS mode.
