Overview
The LTC1857CG#PBF is an 8-channel, 12-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 | 12-bit |
| Sampling Rate | 100ksps |
| Input Spans | 0V to 5V, 0V to 10V, ±5V, ±10V |
| Supply Voltage | 5V |
| Power Dissipation | 40mW |
| Integral Nonlinearity (INL) | ±1LSB |
| Input Protection | ±25V fault protection |
| Package | 28-Lead SSOP |
| Operating Temperature Range | 0°C to 70°C |
Key Features
- Software-programmable input spans for flexibility in various applications.
- Low power consumption with two user-selectable power shutdown modes.
- Onboard high-performance sample-and-hold and precision reference.
- 8-channel multiplexer that can be programmed for single-ended or differential inputs.
- ±25V fault protection on all channels.
- Internal clock trimmed for 5µs maximum conversion time.
- Separate convert start input and data ready signal (BUSY) for easy integration with FIFOs, DSPs, and microprocessors.
Applications
The LTC1857CG#PBF is suitable for a variety of applications that require high precision and low power consumption, such as:
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems.
- Automotive systems, including sensor interfaces and data acquisition.
- Test and measurement equipment.
Q & A
- What is the resolution of the LTC1857CG#PBF ADC?
The LTC1857CG#PBF has a 12-bit resolution.
- What are the available input spans for the LTC1857CG#PBF?
The input spans can be software-programmed for 0V to 5V, 0V to 10V, ±5V, or ±10V.
- What is the sampling rate of the LTC1857CG#PBF?
The sampling rate is 100ksps.
- How many channels does the LTC1857CG#PBF have?
The device has 8 channels.
- What is the power dissipation of the LTC1857CG#PBF?
The power dissipation is 40mW.
- Does the LTC1857CG#PBF have fault protection?
- What is the operating temperature range of the LTC1857CG#PBF?
The operating temperature range is 0°C to 70°C.
- What package type is the LTC1857CG#PBF available in?
The device is available in a 28-Lead SSOP package.
- Can the LTC1857CG#PBF be used with differential inputs?
- How does the LTC1857CG#PBF integrate with other components like FIFOs and microprocessors?
The device features a separate convert start input and data ready signal (BUSY) for easy integration.
