Overview
The LTC2265IUJ-14 is a 14-bit, dual-channel, simultaneous sampling analog-to-digital converter (ADC) produced by Analog Devices, Inc. This device is designed to digitize high-frequency, wide dynamic range signals, making it ideal for demanding communications applications. It features low power consumption, high signal-to-noise ratio (SNR), and spurious free dynamic range (SFDR), along with ultralow jitter, which allows for excellent noise performance even when undersampling IF frequencies.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 14-bit | |
| Sampling Rate | 65Msps | |
| Signal-to-Noise Ratio (SNR) | 73.7dB | dBFS |
| Spurious Free Dynamic Range (SFDR) | 90dB | dBFS |
| Power Consumption (Total) | 171mW / 113mW / 94mW | mW |
| Power Consumption (Per Channel) | 85mW / 56mW / 47mW | mW |
| Supply Voltage | 1.8V | V |
| Input Range | 1Vpp to 2Vpp | Vpp |
| Full Power Bandwidth | 800MHz | MHz |
| Output Type | Serial LVDS | |
| Package Type | 40-Pin QFN (6mm x 6mm x 0.75mm) |
Key Features
- 2-channel simultaneous sampling ADC
- Low power consumption: 171mW/113mW/94mW total, 85mW/56mW/47mW per channel
- Single 1.8V supply voltage
- Serial LVDS outputs: 1 or 2 bits per channel with optional internal termination and adjustable output levels
- Selectable input ranges: 1Vpp to 2Vpp
- 800MHz full power bandwidth sample-and-hold (S/H)
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible with 14-bit and 12-bit versions
- Ultralow jitter of 0.15ps RMS
- No missing codes over temperature; ±1LSB INL (typ), ±0.3LSB DNL (typ)
Applications
The LTC2265IUJ-14 is particularly suited for demanding communications applications, including:
- High-frequency signal processing
- Wide dynamic range signal digitization
- IF (Intermediate Frequency) undersampling
- Wireless communication systems
- Radar and surveillance systems
- Medical imaging and diagnostic equipment
Q & A
- What is the resolution of the LTC2265IUJ-14 ADC?
The LTC2265IUJ-14 has a resolution of 14 bits.
- What are the sampling rates available for the LTC2265IUJ-14?
The LTC2265IUJ-14 can sample at rates of up to 65Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2265IUJ-14?
The SNR of the LTC2265IUJ-14 is 73.7dB.
- What is the spurious free dynamic range (SFDR) of the LTC2265IUJ-14?
The SFDR of the LTC2265IUJ-14 is 90dB.
- How much power does the LTC2265IUJ-14 consume?
The total power consumption is 171mW/113mW/94mW, and per channel it is 85mW/56mW/47mW.
- What is the supply voltage for the LTC2265IUJ-14?
The supply voltage is 1.8V.
- What are the input ranges for the LTC2265IUJ-14?
The input ranges are selectable from 1Vpp to 2Vpp.
- What is the full power bandwidth of the sample-and-hold (S/H) circuit?
The full power bandwidth is 800MHz.
- Does the LTC2265IUJ-14 have power management features?
Yes, it has shutdown and nap modes for power management.
- How is the output data transmitted from the LTC2265IUJ-14?
The output data is transmitted via serial LVDS, with options for 1 or 2 bits per channel.
