Overview
The LTC1744CFW#PBF, produced by Analog Devices Inc., is a high-performance 14-bit analog-to-digital converter (ADC) designed to digitize high-frequency, wide dynamic range signals. This ADC operates at a sample rate of 50 Msps and is particularly suited for demanding communications applications. It features excellent AC performance, including a signal-to-noise ratio (SNR) of 77 dB and a spurious free dynamic range (SFDR) of 87 dB for the 3.2V input range. The device is known for its ultralow jitter of 0.3 ps RMS, enabling undersampling of IF frequencies with excellent noise performance.
Key Specifications
| Parameter | Value |
|---|---|
| Sample Rate | 50 Msps |
| Resolution | 14 bits |
| SNR (3.2V Range) | 77 dB |
| SFDR (3.2V Range) | 87 dB |
| SNR (2V Range) | 73.5 dB |
| SFDR (2V Range) | 90 dB |
| Input Ranges | ±1V, ±1.6V (pin selectable), resistor programmable |
| Power Supply | Single 5V |
| Power Dissipation | 1.2 W |
| Full Power Bandwidth S/H | 150 MHz |
| Package | 48-Lead TSSOP |
| Jitter | 0.3 ps RMS |
Key Features
- No missing codes over temperature.
- Pin selectable input ranges of ±1V and ±1.6V.
- Resistor programmable input range for flexibility.
- Ultralow jitter of 0.3 ps RMS for excellent noise performance.
- Compatible with 5V, 3V, and 2V logic systems.
- ENC and ENC inputs can be driven differentially from PECL, GTL, and other low swing logic families or single-ended TTL or CMOS.
- Separate output power supply can be operated from 0.5V to 5V.
- Flow-through pinout in TSSOP package simplifies board layout.
Applications
- Telecommunications
- Receivers
- Base Stations
- Spectrum Analysis
- Imaging Systems
Q & A
- What is the sample rate of the LTC1744CFW#PBF?
The sample rate of the LTC1744CFW#PBF is 50 Msps. - What are the input ranges for the LTC1744CFW#PBF?
The input ranges are ±1V and ±1.6V, which are pin selectable, and also resistor programmable. - What is the SNR and SFDR for the 3.2V input range?
The SNR is 77 dB and the SFDR is 87 dB for the 3.2V input range. - What is the power dissipation of the LTC1744CFW#PBF?
The power dissipation is 1.2 W. - What is the package type of the LTC1744CFW#PBF?
The package type is a 48-Lead TSSOP. - What is the jitter performance of the LTC1744CFW#PBF?
The jitter performance is 0.3 ps RMS. - Is the LTC1744CFW#PBF compatible with different logic systems?
Yes, it is compatible with 5V, 3V, and 2V logic systems. - What are some typical applications of the LTC1744CFW#PBF?
Typical applications include telecommunications, receivers, base stations, spectrum analysis, and imaging systems. - Can the output power supply be operated at different voltages?
Yes, the separate output power supply can be operated from 0.5V to 5V. - How does the flow-through pinout in the TSSOP package benefit the design?
The flow-through pinout simplifies the board layout.
