Overview
The LTC2256IUJ-14#PBF is a 14-bit, 25Msps analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for digitizing high-frequency, wide dynamic range signals, making it ideal for demanding communications and other high-performance applications. It features a single 1.8V supply and is available in a compact 40-lead QFN package.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | 25 Msps |
| Signal-to-Noise Ratio (SNR) | 74 dB |
| Spurious Free Dynamic Range (SFDR) | 88 dB |
| Power Consumption | 81 mW / 49 mW / 35 mW |
| Supply Voltage | 1.8 V |
| Output Formats | CMOS, DDR CMOS, DDR LVDS |
| Input Range | 1 V P-P to 2 V P-P |
| Full-Power Bandwidth S/H | 800 MHz |
| Package Type | 40-Lead QFN (6mm x 6mm x 0.75mm) |
Key Features
- Ultralow jitter of 0.17 ps RMS
- Optional data output randomizer and clock duty cycle stabilizer
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible with 12-bit and 14-bit versions
- Low transition noise of 1.13 LSB RMS
- No missing codes over temperature
- DC specs include ±1 LSB INL (typical) and ±0.3 LSB DNL (typical)
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 LTC2256IUJ-14#PBF?
The resolution of the LTC2256IUJ-14#PBF is 14 bits. - What is the sampling rate of this ADC?
The sampling rate is 25 Msps. - What are the available output formats for this ADC?
The digital outputs can be either full rate CMOS, double data rate CMOS, or double data rate LVDS. - What is the power consumption of this device?
The power consumption is 81 mW / 49 mW / 35 mW. - What is the supply voltage for this ADC?
The supply voltage is 1.8 V. - What are the key applications of this ADC?
Key applications include communications, cellular base stations, software defined radios, portable medical imaging, multi-channel data acquisition, and nondestructive testing. - 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 this ADC have any power-saving modes?
Yes, it has shutdown and nap modes for power management. - How is the device configured?
The device can be configured via a serial SPI port. - What is the package type of this ADC?
The package type is a 40-Lead QFN (6mm x 6mm x 0.75mm).
