Overview
The LTC2122, produced by Analog Devices Inc., is a dual 14-bit analog-to-digital converter (ADC) designed for high-frequency, wide dynamic range signal digitization. It operates at a sampling rate of 170 Msps and features serial JESD204B outputs. This ADC is particularly suited for demanding communications applications, offering excellent AC performance with a signal-to-noise ratio (SNR) of 70 dBFS and a spurious free dynamic range (SFDR) of 90 dBFS. The device is powered by a single 1.8V supply and is available in a 48-lead QFN package.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Channels | 2 | |
| Resolution | 14 bits | |
| Sampling Rate | 170 Msps | |
| Input Range | 1.5V P-P | |
| Full Power Bandwidth | 1.25 GHz | |
| SNR | 70 dBFS | |
| SFDR | 90 dBFS | |
| Power Consumption | 751 mW | |
| Supply Voltage | 1.8 V | |
| Package | 48-Lead QFN |
Key Features
- Simultaneous sampling of two channels
- 6.0 Gbps JESD204B serial interface, allowing both ADCs to share one output lane up to 150 Msps
- Low power consumption with sleep and nap modes
- Optional clock divide-by-two circuit and clock duty cycle stabilizer
- Serial SPI port for configuration
- Easy-to-drive 1.5V P-P input range
- Low power sleep and nap modes
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Medical Imaging
- High Definition Video
- Test and Measurement Instrumentation
Q & A
- What is the sampling rate of the LTC2122 ADC?
The LTC2122 ADC has a sampling rate of 170 Msps.
- How many channels does the LTC2122 ADC have?
The LTC2122 ADC has two channels.
- What is the resolution of the LTC2122 ADC?
The resolution of the LTC2122 ADC is 14 bits.
- What is the input range of the LTC2122 ADC?
The input range of the LTC2122 ADC is 1.5V P-P.
- What is the full power bandwidth of the LTC2122 ADC?
The full power bandwidth of the LTC2122 ADC is 1.25 GHz.
- What is the SNR and SFDR of the LTC2122 ADC?
The SNR is 70 dBFS, and the SFDR is 90 dBFS.
- What is the power consumption of the LTC2122 ADC?
The power consumption of the LTC2122 ADC is 751 mW.
- What type of serial interface does the LTC2122 ADC use?
The LTC2122 ADC uses a 6.0 Gbps JESD204B serial interface.
- What are some of the key applications of the LTC2122 ADC?
Key applications include communications, cellular base stations, software defined radios, medical imaging, high definition video, and test and measurement instrumentation.
- What package type is the LTC2122 ADC available in?
The LTC2122 ADC is available in a 48-lead QFN package.
