Overview
The LTC2185CUP, produced by Analog Devices Inc., is a 16-bit, 125 Msps low power dual analog-to-digital converter (ADC). This component is designed for digitizing high frequency, wide dynamic range signals, making it ideal for demanding communications and other high-performance applications. The LTC2185 features two-channel simultaneous sampling, which allows for precise and synchronized data acquisition. With its low power consumption and high AC performance, it is well-suited for applications requiring excellent signal-to-noise ratio (SNR) and spurious free dynamic range (SFDR).
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Sampling Frequency | 125 | MHz |
| Resolution | 16-bit | |
| SNR | 76.8 dB | |
| SFDR | 90 dB | |
| Power Consumption (Total) | 370 mW | |
| Power Consumption (Per Channel) | 185 mW | |
| Supply Voltage | 1.8 V | |
| Output Modes | CMOS, DDR CMOS, DDR LVDS | |
| Input Ranges | 1 V P-P to 2 V P-P | |
| Full Power Bandwidth S/H | 550 MHz | |
| Jitter | 0.07 ps RMS | |
| Package Type | 64-Pin (9mm × 9mm) QFN |
Key Features
- Two-channel simultaneous sampling for synchronized data acquisition.
- Low power consumption with 185 mW per channel.
- High AC performance with 76.8 dB SNR and 90 dB SFDR.
- Single 1.8 V supply voltage.
- CMOS, DDR CMOS, or DDR LVDS digital outputs.
- Selectable input ranges from 1 V P-P to 2 V P-P.
- 550 MHz full power bandwidth sample-and-hold (S/H).
- 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 sampling frequency of the LTC2185CUP?
The sampling frequency of the LTC2185CUP is 125 Msps.
- What is the resolution of the LTC2185CUP?
The resolution of the LTC2185CUP is 16 bits.
- What are the SNR and SFDR specifications of the LTC2185CUP?
The LTC2185CUP has an SNR of 76.8 dB and an SFDR of 90 dB.
- How much power does the LTC2185CUP consume?
The total power consumption of the LTC2185CUP is 370 mW, with 185 mW per channel.
- What are the output modes available for the LTC2185CUP?
The LTC2185CUP supports CMOS, DDR CMOS, and DDR LVDS output modes.
- What is the full power bandwidth of the sample-and-hold (S/H) in the LTC2185CUP?
The full power bandwidth of the S/H is 550 MHz.
- Does the LTC2185CUP support power management features?
Yes, the LTC2185CUP includes shutdown and nap modes for power management.
- How is the LTC2185CUP configured?
The LTC2185CUP can be configured via a serial SPI port.
- What are some typical applications of the LTC2185CUP?
Typical applications include communications, portable medical imaging, multi-channel data acquisition, and nondestructive testing.
- What is the package type of the LTC2185CUP?
The LTC2185CUP comes in a 64-Pin (9mm × 9mm) QFN package.
