Overview
The LTC1858CG#PBF is a high-performance, 8-channel, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This SoftSpan™ ADC is part of the LTC1857/LTC1858/LTC1859 family and is known for its low power consumption and versatility in input configurations. It operates from a single 5V supply and can be software-programmed for various input spans, including 0V to 5V, 0V to 10V, ±5V, or ±10V. The device features an onboard high-performance sample-and-hold and precision reference, minimizing the need for external components.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 14 bits |
| Number of Channels | 8 channels |
| Sampling Rate | 100 ksps |
| Input Span | Software-programmable: 0V to 5V, 0V to 10V, ±5V, ±10V |
| Supply Voltage | 5V |
| Power Dissipation | 40 mW |
| Conversion Time | 5 µs maximum |
| Integral Non-Linearity (INL) | ±1.5 LSB |
| Package | 28-Lead SSOP |
| Operating Temperature | Commercial (0°C to 70°C) and Industrial (-40°C to 85°C) grades available |
Key Features
- Low power consumption with two user-selectable power shutdown modes.
- Onboard high-performance sample-and-hold and precision reference.
- Software-programmable input spans and channel configurations (single-ended or differential inputs).
- Fault protection up to ±25V on all channels without affecting the conversion result of the selected channel.
- Separate convert start input and data ready signal (BUSY) for easy integration with FIFOs, DSPs, and microprocessors.
Applications
The LTC1858CG#PBF is suitable for a variety of applications requiring high accuracy and low power consumption, such as:
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
- Data acquisition systems.
Q & A
- What is the resolution of the LTC1858CG#PBF ADC?
The LTC1858CG#PBF has a resolution of 14 bits. - How many channels does the LTC1858CG#PBF support?
The device supports 8 channels. - What is the sampling rate of the LTC1858CG#PBF?
The sampling rate is 100 ksps. - What are the possible input spans for the LTC1858CG#PBF?
The input spans can be software-programmed for 0V to 5V, 0V to 10V, ±5V, or ±10V. - What is the power dissipation of the LTC1858CG#PBF?
The power dissipation is 40 mW. - What is the maximum conversion time for the LTC1858CG#PBF?
The maximum conversion time is 5 µs. - Does the LTC1858CG#PBF have fault protection?
Yes, all channels are fault protected up to ±25V. - What package options are available for the LTC1858CG#PBF?
The device is available in a 28-Lead SSOP package. - What are the operating temperature ranges for the LTC1858CG#PBF?
The device is available in commercial (0°C to 70°C) and industrial (-40°C to 85°C) grades. - Can the LTC1858CG#PBF be integrated with other digital systems?
Yes, it has a separate convert start input and data ready signal (BUSY) for easy integration with FIFOs, DSPs, and microprocessors.
