Overview
The LTC2257CUJ-14#TRPBF is a high-performance, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the LTC2257 family and is designed for digitizing high-frequency, wide dynamic range signals. It is particularly suited for demanding communications applications due to its excellent AC performance and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | 40 Msps |
| Supply Voltage | 1.7V to 1.9V |
| Package Type | 40-Pin QFN (6mm x 6mm x 0.75mm) |
| Output Type | CMOS, DDR CMOS, or DDR LVDS |
| Input Range | 1V P-P to 2V P-P |
| Full-Power Bandwidth S/H | 800 MHz |
| SNR | 74 dB |
| SFDR | 88 dB |
| Power Consumption | 81 mW / 49 mW / 35 mW |
| RoHS Compliance | Yes |
Key Features
- Ultralow jitter of 0.17 ps RMS, allowing for undersampling of IF frequencies with excellent noise performance.
- Low power consumption with options for shutdown and nap modes.
- Selectable input ranges: 1V P-P to 2V P-P.
- Optional data output randomizer and clock duty cycle stabilizer.
- Serial SPI port for configuration.
- Pin compatible with 14-bit and 12-bit versions.
- Separate output power supply allowing CMOS output swing from 1.2V to 1.8V.
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 LTC2257CUJ-14#TRPBF? The resolution is 14 bits.
- What is the sampling rate of this ADC? The sampling rate is 40 Msps.
- What are the supply voltage requirements? The supply voltage ranges from 1.7V to 1.9V.
- What types of output are supported? The device supports CMOS, DDR CMOS, or DDR LVDS outputs.
- What is the full-power bandwidth of the sample and hold (S/H) circuit? The full-power bandwidth of the S/H circuit is 800 MHz.
- Does the device support differential or single-ended inputs? Yes, the device supports both differential and single-ended inputs.
- What are the power consumption options for this ADC? The power consumption options are 81 mW, 49 mW, and 35 mW.
- Is the LTC2257CUJ-14#TRPBF RoHS compliant? Yes, it is RoHS compliant.
- What are some of the key applications for this ADC? Key applications include communications, cellular base stations, software defined radios, portable medical imaging, multi-channel data acquisition, and nondestructive testing.
- Does the device have any power-saving modes? Yes, it has shutdown and nap modes for power saving.
