Overview
The LTC1858IG#PBF is an 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, known for its low power consumption and high precision. The device 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. It features an onboard high-performance sample-and-hold and precision reference, minimizing the need for external components.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Resolution | 14-bit |
| Sampling Rate | 100 ksps |
| Input Ranges | 0V to 5V, 0V to 10V, ±5V, ±10V (software-programmable) |
| Supply Voltage | 5V |
| Power Dissipation | 40 mW (typical) |
| Integral Nonlinearity (INL) | ±1.5 LSB |
| Input Protection | ±25V fault protection |
| Package | 28-Lead SSOP |
| Operating Temperature | -40°C to 85°C (industrial grade) |
Key Features
- Software-programmable input ranges: 0V to 5V, 0V to 10V, ±5V, or ±10V.
- Single-ended or differential input configurations.
- Onboard high-performance sample-and-hold and precision reference.
- Low power dissipation with two user-selectable power shutdown modes (Nap and Sleep).
- SPI/MICROWIRE compatible serial I/O.
- Internal synchronized clock with a maximum conversion time of 5 µs.
- Separate convert start input and data ready signal (BUSY) for easy connections to FIFOs, DSPs, and microprocessors.
Applications
The LTC1858IG#PBF is suitable for a variety of applications requiring high precision and low power consumption, such as:
- Data acquisition systems.
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
Q & A
- What is the resolution of the LTC1858IG#PBF ADC?
The LTC1858IG#PBF has a 14-bit resolution.
- What are the software-programmable input ranges for the LTC1858IG#PBF?
The input ranges can be programmed for 0V to 5V, 0V to 10V, ±5V, or ±10V.
- What is the maximum sampling rate of the LTC1858IG#PBF?
The maximum sampling rate is 100 ksps.
- What is the power dissipation of the LTC1858IG#PBF?
The typical power dissipation is 40 mW.
- Does the LTC1858IG#PBF have fault protection on its inputs?
- What package options are available for the LTC1858IG#PBF?
The device is available in a 28-Lead SSOP package.
- What are the operating temperature ranges for the LTC1858IG#PBF?
The device operates from -40°C to 85°C (industrial grade).
- Does the LTC1858IG#PBF support both single-ended and differential inputs?
- What serial interface does the LTC1858IG#PBF use?
The device uses SPI/MICROWIRE compatible serial I/O.
- Are there any power shutdown modes available on the LTC1858IG#PBF?
