Overview
The LTC2333HLX-18#PBF 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 part of the SoftSpan™ series and is designed to offer high flexibility and performance in various high-voltage applications. It operates from a 5V low-voltage supply and can be configured to accept a range of input signals, including ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V on any channel. The integrated picoamp-input analog buffers and wide input common mode range make it ideal for directly digitizing a variety of signals with minimal board space and power consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 18 bits |
| Number of Channels | 8 channels |
| Sampling Rate | 800 ksps |
| Input Range | ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V |
| Input Leakage | 500 pA / 12 nA at 85°C / 125°C |
| Integral Nonlinearity (INL) | ±3 LSB (maximum ±10.24V range) |
| Signal-to-Noise Ratio (SNR) | 96.4 dB |
| Common Mode Range | 30 Vpp |
| Common Mode Rejection Ratio (CMRR) | 128 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-LQFP (7x7) |
| Serial Interface | SPI CMOS (1.8V to 5V), LVDS |
Key Features
- Buffered differential inputs with wide common mode range and high CMRR (128 dB)
- Flexible input ranges: ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
- Low noise and high accuracy: ±3 LSB INL, no missing codes at 18 bits, 96.4 dB SNR
- Picoamp-input analog buffers for minimal input leakage (500 pA / 12 nA at 85°C / 125°C)
- Support for pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces
- Internal reference and buffer for flexible configuration on a conversion-by-conversion basis
Applications
- High-voltage industrial control systems
- Medical devices requiring high accuracy and low noise
- Aerospace and defense applications with stringent performance requirements
- Automotive systems needing robust and reliable ADCs
- Data acquisition systems in various industries
Q & A
- What is the resolution of the LTC2333HLX-18#PBF ADC?
The LTC2333HLX-18#PBF has an 18-bit resolution.
- How many channels does the LTC2333HLX-18#PBF support?
The device supports 8 multiplexed channels.
- What are the input ranges supported by the LTC2333HLX-18#PBF?
The device can be configured to accept ±10.24V, 0V to 10.24V, ±5.12V, and 0V to 5.12V input signals.
- What is the sampling rate of the LTC2333HLX-18#PBF?
The sampling rate is 800 ksps.
- What is the common mode rejection ratio (CMRR) of the LTC2333HLX-18#PBF?
The CMRR is 128 dB.
- What are the supply voltage requirements for the LTC2333HLX-18#PBF?
The supply voltage requirements include VCC (-0.3V to (VEE + 40V)), VEE (-17.4V to 0.3V), and a supply voltage difference (VCC – VEE) of 40V.
- What serial interfaces are supported by the LTC2333HLX-18#PBF?
The device supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces.
- What is the package type of the LTC2333HLX-18#PBF?
The device is packaged in a 48-LQFP (7x7) package.
- What are some typical applications of the LTC2333HLX-18#PBF?
Typical applications include high-voltage industrial control systems, medical devices, aerospace and defense, automotive systems, and data acquisition systems.
- How does the LTC2333HLX-18#PBF handle input leakage?
The device features picoamp-input analog buffers with minimal input leakage (500 pA / 12 nA at 85°C / 125°C).
