Overview
The LTC2261-14 is a 14-bit, 125Msps ultra-low power analog-to-digital converter (ADC) designed by Analog Devices Inc. This ADC is optimized for digitizing high frequency, wide dynamic range signals, making it ideal for demanding communications applications. It features exceptional AC performance, including a signal-to-noise ratio (SNR) of 73.4dB and a spurious free dynamic range (SFDR) of 85dB. The ultra-low jitter of 0.17ps RMS enables undersampling of IF frequencies with excellent noise performance. The device operates on a single 1.8V supply and is available in a 40-pin (6mm × 6mm) QFN package.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 14-bit | |
| Sampling Rate | 125 Msps | |
| SNR | 73.4 dB | |
| SFDR | 85 dB | |
| Jitter | 0.17 ps RMS | |
| Power Consumption | 127 mW | |
| Supply Voltage | 1.8 V | |
| Output Types | CMOS, DDR CMOS, DDR LVDS | |
| Input Ranges | 1 Vpp to 2 Vpp | |
| Full-Power Bandwidth S/H | 800 MHz | |
| Package | 40-Pin (6mm × 6mm) QFN | |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- High AC performance with 73.4dB SNR and 85dB SFDR
- Ultra-low jitter of 0.17ps RMS for excellent noise performance
- Low power consumption: 127mW/106mW/89mW
- Single 1.8V supply
- CMOS, DDR CMOS, or DDR LVDS output options
- Selectable input ranges: 1Vpp to 2Vpp
- 800MHz full-power bandwidth sample-and-hold
- Optional data output randomizer and clock duty cycle stabilizer
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible with 14-bit and 12-bit versions
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Portable Medical Imaging
- Multi-Channel Data Acquisition
- Nondestructive Testing
Q & A
- What is the resolution of the LTC2261-14 ADC?
The LTC2261-14 has a resolution of 14 bits.
- What is the maximum sampling rate of the LTC2261-14?
The maximum sampling rate is 125 Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2261-14?
The SNR is 73.4 dB.
- What types of digital outputs are available on the LTC2261-14?
The digital outputs can be CMOS, DDR CMOS, or DDR LVDS.
- What is the power consumption of the LTC2261-14?
The power consumption is typically 127 mW.
- What are the selectable input ranges for the LTC2261-14?
The input ranges are selectable from 1 Vpp to 2 Vpp.
- Does the LTC2261-14 support different operating temperatures?
- What package type is the LTC2261-14 available in?
- Are there any power management features in the LTC2261-14?
- How is the LTC2261-14 configured?
