Overview
The LTC2142-14, produced by Analog Devices Inc., is a high-performance, 14-bit, two-channel simultaneous sampling analog-to-digital converter (ADC). This device is designed to digitize high-frequency, wide dynamic range signals, making it ideal for demanding communications and other high-speed applications. It features excellent AC performance, including a signal-to-noise ratio (SNR) of 73.2dB and a spurious free dynamic range (SFDR) of 90dB. The LTC2142-14 is known for its low power consumption and high accuracy, with specifications such as ±1LSB INL (typical) and ±0.3LSB DNL (typical) over temperature.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Sampling Rate | Up to 65 Msps |
| Signal-to-Noise Ratio (SNR) | 73.2 dB |
| Spurious Free Dynamic Range (SFDR) | 90 dB |
| Power Consumption | 95 mW (total), 48 mW per channel |
| Supply Voltage | Single 1.8 V |
| Input Range | Selectable: 1 V P-P to 2 V P-P |
| Output Type | CMOS, DDR CMOS, or DDR LVDS |
| Package | 64-Lead QFN (9mm x 9mm x 0.75mm) |
| Jitter | 0.08 ps RMS |
Key Features
- Two-channel simultaneous sampling ADC
- Low power consumption: 95 mW total, 48 mW per channel
- Single 1.8 V supply
- CMOS, DDR CMOS, or DDR LVDS outputs
- Selectable input ranges: 1 V P-P to 2 V P-P
- 750 MHz 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
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 LTC2142-14 ADC?
The LTC2142-14 has a resolution of 14 bits. - What is the maximum sampling rate of the LTC2142-14?
The maximum sampling rate is up to 65 Msps. - What is the signal-to-noise ratio (SNR) of the LTC2142-14?
The SNR is 73.2 dB. - What types of output can the LTC2142-14 provide?
The outputs can be CMOS, DDR CMOS, or DDR LVDS. - What is the power consumption of the LTC2142-14?
The total power consumption is 95 mW, with 48 mW per channel. - What are the selectable input ranges for the LTC2142-14?
The input ranges are selectable from 1 V P-P to 2 V P-P. - Does the LTC2142-14 support differential or single-ended inputs?
Yes, the inputs can be driven differentially or single-ended. - What is the package type of the LTC2142-14?
The package is a 64-Lead QFN (9mm x 9mm x 0.75mm). - What are some of the key applications for the LTC2142-14?
Key applications include communications, cellular base stations, software defined radios, portable medical imaging, and multi-channel data acquisition. - Does the LTC2142-14 have any power management features?
Yes, it includes shutdown and nap modes for power management.
