Overview
The LTC2311-12, produced by Analog Devices Inc., is a high-performance, low-noise, 12-bit + sign successive approximation register (SAR) analog-to-digital converter (ADC). This component is designed with differential inputs and a wide input common mode range, making it ideal for applications requiring high dynamic range and common mode rejection. Operating from a single 3.3V or 5V supply, the LTC2311-12 features an 8VP-P differential input range and achieves ±0.25LSB INL typical, with no missing codes at 12 bits and a typical signal-to-noise ratio (SNR) of 73dB. The ADC includes an onboard low drift temperature-compensated reference and supports high-speed SPI-compatible serial interfaces with CMOS or LVDS options.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit + sign |
| Sampling Rate | 5 Msps |
| Differential Input Range | 8VP-P |
| Supply Voltage | 3.3V or 5V |
| Integral Non-Linearity (INL) | ±0.25LSB typical |
| Signal-to-Noise Ratio (SNR) | 73dB typical |
| Reference Voltage | 2.048V or 4.096V (onboard), 1.25V (external buffered) |
| Interface | High-speed SPI-compatible (CMOS or LVDS) |
| Power Consumption | 50mW at 5V supply |
| Operating Temperature | –40°C to 85°C |
| Package | 16-Lead Plastic MSOP |
Key Features
- Low noise and high speed operation
- Differential inputs with wide input common mode range
- Onboard low drift temperature-compensated reference (20ppm/°C max)
- External 1.25V buffered reference input option
- High-speed SPI-compatible serial interface supporting CMOS or LVDS
- Fast 5Msps throughput with one-cycle latency
- Nap and sleep modes for reduced power consumption
- No missing codes at 12 bits
Applications
The LTC2311-12 is ideally suited for a wide variety of high-speed applications, including but not limited to:
- High-speed data acquisition systems
- Medical imaging and diagnostics
- Aerospace and defense systems
- Industrial automation and control systems
- High-performance test and measurement equipment
Q & A
- What is the resolution of the LTC2311-12 ADC? The LTC2311-12 has a resolution of 12-bit + sign.
- What is the sampling rate of the LTC2311-12? The sampling rate is 5 Msps.
- What is the differential input range of the LTC2311-12? The differential input range is 8VP-P.
- What are the supply voltage options for the LTC2311-12? The LTC2311-12 can operate from a single 3.3V or 5V supply.
- What is the typical INL of the LTC2311-12? The typical INL is ±0.25LSB.
- What is the typical SNR of the LTC2311-12? The typical SNR is 73dB.
- Does the LTC2311-12 have onboard reference options? Yes, it includes onboard low drift temperature-compensated references of 2.048V or 4.096V.
- What types of serial interfaces does the LTC2311-12 support? The LTC2311-12 supports high-speed SPI-compatible serial interfaces with CMOS or LVDS options.
- How much power does the LTC2311-12 consume at 5V supply? The power consumption is 50mW at a 5V supply.
- Does the LTC2311-12 have power-saving modes? Yes, it has nap and sleep modes to reduce power consumption during inactive periods.
