Overview
The LTC2157IUP-12 is a high-performance, dual 12-bit analog-to-digital converter (ADC) designed by Analog Devices Inc. This component is part of the LTC2157 family, which includes 12-bit, 14-bit, and other variants, each optimized for digitizing high-frequency, wide dynamic range signals. The LTC2157IUP-12 is particularly suited for demanding applications in communications, medical imaging, and high-definition video, among others.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 250 Msps |
| Signal-to-Noise Ratio (SNR) | 68.5 dB |
| Spurious Free Dynamic Range (SFDR) | 90 dB |
| Analog Supply Voltage | 1.8 V |
| Input Bandwidth | 1.25 GHz |
| Input Range | 1.5 V P-P |
| Output Type | DDR LVDS |
| Power Consumption | 628 mW (total) |
| Package Type | 64-Lead QFN (9mm x 9mm x 0.75mm) |
| Integral Linearity Error (INL) | ±0.26 LSB (typ) |
| Differential Linearity Error (DNL) | ±0.16 LSB (typ) |
Key Features
- High AC performance with 68.5 dB SNR and 90 dB SFDR.
- Single 1.8 V supply voltage.
- DDR LVDS outputs for high-speed data transfer.
- Easy-to-drive 1.5 V P-P input range.
- Optional clock duty cycle stabilizer for high performance across various clock duty cycles.
- Low power sleep and nap modes for power efficiency.
- Serial SPI port for configuration.
- Pin-compatible with 14-bit versions.
Applications
- Communications and cellular basestations.
- Software-defined radios.
- Medical imaging.
- High-definition video.
- Testing and measurement instruments.
Q & A
- What is the resolution of the LTC2157IUP-12 ADC?
The LTC2157IUP-12 has a resolution of 12 bits. - What is the maximum sampling rate of the LTC2157IUP-12?
The maximum sampling rate is 250 Msps. - What is the signal-to-noise ratio (SNR) of the LTC2157IUP-12?
The SNR is 68.5 dB. - What type of output does the LTC2157IUP-12 use?
The output type is DDR LVDS. - What is the input bandwidth of the LTC2157IUP-12?
The input bandwidth is 1.25 GHz. - How much power does the LTC2157IUP-12 consume?
The total power consumption is 628 mW. - What package type is the LTC2157IUP-12 available in?
The LTC2157IUP-12 is available in a 64-Lead QFN package (9mm x 9mm x 0.75mm). - What are some of the key applications for the LTC2157IUP-12?
Key applications include communications, cellular basestations, software-defined radios, medical imaging, high-definition video, and testing and measurement instruments. - Does the LTC2157IUP-12 have low power modes?
Yes, it has low power sleep and nap modes for power efficiency. - How can the LTC2157IUP-12 be configured?
The LTC2157IUP-12 can be configured via a serial SPI port.
