Overview
The LTC2157-14, produced by Analog Devices Inc., is a high-performance, dual-channel, 14-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This ADC is part of the LTC2157 family, which includes 12-bit and 14-bit versions with varying sample rates. The LTC2157-14 operates at a sample rate of 250 Msps and is powered by a single 1.8V supply, making it suitable for demanding applications such as communications, cellular basestations, software-defined radios, medical imaging, and high-definition video.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Number of A/D Converters | 2 |
| Sampling Rate | 250 Msps |
| Supply Voltage | 1.7V ~ 1.9V (Analog and Digital) |
| Input Type | Differential |
| Input Range | 1.5V P-P |
| Full Power Bandwidth | 1.25 GHz |
| SNR | 70 dB |
| SFDR | 90 dB |
| Power Consumption | 650 mW (Total) |
| Package | 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP) |
| Operating Temperature | 0°C ~ 70°C |
| Data Interface | DDR LVDS Outputs |
Key Features
- Simultaneous sampling of two channels
- Low power consumption with sleep and nap modes
- Single 1.8V supply
- DDR LVDS outputs for high-speed data transfer
- Easy-to-drive 1.5V P-P input range
- Optional clock duty cycle stabilizer for high performance across various clock duty cycles
- Serial SPI port for configuration
- Pin-compatible 12-bit versions available
- Low transition noise (1.82 LSB RMS)
Applications
- Communications
- Cellular Basestations
- Software Defined Radios
- Medical Imaging
- High Definition Video
- Testing and Measurement Instruments
Q & A
- What is the sampling rate of the LTC2157-14 ADC?
The LTC2157-14 ADC has a sampling rate of 250 Msps. - How many channels does the LTC2157-14 ADC have?
The LTC2157-14 ADC is a dual-channel ADC. - What is the resolution of the LTC2157-14 ADC?
The resolution of the LTC2157-14 ADC is 14 bits. - What is the supply voltage for the LTC2157-14 ADC?
The supply voltage for the LTC2157-14 ADC is 1.7V to 1.9V for both analog and digital supplies. - What type of data interface does the LTC2157-14 ADC use?
The LTC2157-14 ADC uses DDR LVDS outputs for data transfer. - What is the full power bandwidth of the LTC2157-14 ADC?
The full power bandwidth of the LTC2157-14 ADC is 1.25 GHz. - What are the key applications of the LTC2157-14 ADC?
The key applications include communications, cellular basestations, software-defined radios, medical imaging, high-definition video, and testing and measurement instruments. - Does the LTC2157-14 ADC support low power modes?
Yes, the LTC2157-14 ADC supports low power sleep and nap modes. - What is the package type of the LTC2157-14 ADC?
The LTC2157-14 ADC is packaged in a 64-Lead QFN (9mm x 9mm x 0.75mm w/ EP). - Is the LTC2157-14 ADC RoHS compliant?
Yes, the LTC2157-14 ADC is RoHS compliant.
