Overview
The LTC1857IG#PBF is an 8-channel, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This SoftSpan ADC is designed for low power consumption and high precision, making it suitable for a variety of applications requiring multiple input channels. The device operates from a single 5V supply and can be software-programmed for different 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 Span | Software-programmable: 0V to 5V, 0V to 10V, ±5V, ±10V |
| Supply Voltage | 5V |
| Power Dissipation | 40mW (typical) |
| Integral Non-Linearity (INL) | ±1LSB |
| Input Configuration | Single-ended or differential inputs |
| Fault Protection | ±25V on all channels |
| Package | 28-Lead SSOP |
| Operating Temperature Range | -40°C to 85°C |
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 for flexibility.
- 8-channel multiplexer supporting single-ended or differential inputs.
- Fault protection up to ±25V 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 LTC1857IG#PBF is suitable for various applications requiring high precision and multiple input channels, such as:
- Data acquisition systems.
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
Q & A
- What is the resolution of the LTC1857IG#PBF ADC?
The LTC1857IG#PBF has a 12-bit resolution.
- What is the sampling rate of the LTC1857IG#PBF?
The sampling rate is 100ksps.
- What are the programmable input spans for the LTC1857IG#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 LTC1857IG#PBF?
The typical power dissipation is 40mW.
- Does the LTC1857IG#PBF support differential inputs?
- What is the fault protection level for the LTC1857IG#PBF?
The device has fault protection up to ±25V on all channels.
- What is the operating temperature range for the LTC1857IG#PBF?
The operating temperature range is -40°C to 85°C.
- What package type is the LTC1857IG#PBF available in?
The device is available in a 28-Lead SSOP package.
- Does the LTC1857IG#PBF have onboard reference and sample-and-hold?
- How can the LTC1857IG#PBF be integrated with other components?
The device has a separate convert start input and data ready signal (BUSY) for easy integration with FIFOs, DSPs, and microprocessors.
