Overview
The LTC2268CUJ-14#PBF is a 14-bit, dual-channel, simultaneous sampling analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for digitizing 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 | Bits |
| Sampling Rate | 125 Msps | |
| Integral Linearity Error (INL) | ±1 LSB (typ) | |
| Differential Linearity Error (DNL) | ±0.3 LSB (typ) | |
| Signal-to-Noise Ratio (SNR) | 73.1 dB | |
| Spurious Free Dynamic Range (SFDR) | 88 dB | |
| Jitter | 0.15 ps RMS | |
| Supply Voltage | 1.8 V | |
| Power Consumption (Total) | 299 mW | |
| Power Consumption (Per Channel) | 150 mW | |
| Operating Temperature Range | 0°C to 70°C (Commercial), -40°C to 85°C (Industrial) | |
| Package | 40-Lead QFN (6mm x 6mm x 0.75mm) |
Key Features
- 2-channel simultaneous sampling ADC
- High AC performance: 73.1 dB SNR and 88 dB SFDR
- Low power consumption: 299 mW total, 150 mW per channel
- Single 1.8 V supply
- Serial LVDS outputs: 1 or 2 bits per channel
- Selectable input ranges: 1 Vpp to 2 Vpp
- 800 MHz full power bandwidth S/H
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible 14-bit and 12-bit versions
- Internal clock duty cycle stabilizer for high performance across various clock duty cycles
Applications
The LTC2268CUJ-14#PBF 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 diagnostics
Q & A
- What is the resolution of the LTC2268CUJ-14#PBF?
The resolution is 14 bits.
- What is the sampling rate of the LTC2268CUJ-14#PBF?
The sampling rate is 125 Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2268CUJ-14#PBF?
The SNR is 73.1 dB.
- What is the spurious free dynamic range (SFDR) of the LTC2268CUJ-14#PBF?
The SFDR is 88 dB.
- What is the jitter performance of the LTC2268CUJ-14#PBF?
The jitter is 0.15 ps RMS.
- What is the power consumption of the LTC2268CUJ-14#PBF?
The total power consumption is 299 mW, with 150 mW per channel.
- What is the operating temperature range of the LTC2268CUJ-14#PBF?
The operating temperature range is 0°C to 70°C (commercial) and -40°C to 85°C (industrial).
- What type of package does the LTC2268CUJ-14#PBF come in?
The device comes in a 40-Lead QFN (6mm x 6mm x 0.75mm) package.
- Does the LTC2268CUJ-14#PBF support different input ranges?
Yes, it supports selectable input ranges from 1 Vpp to 2 Vpp.
- What are the power management features of the LTC2268CUJ-14#PBF?
The device includes shutdown and nap modes for power management.
