Overview
The Texas Instruments ADS42LB49IRGCT is a high-performance, dual-channel analog-to-digital converter (ADC) designed for applications requiring high speed and precision. This 14-bit ADC operates at a maximum clock rate of 250 MSPS, making it suitable for a wide range of high-frequency signal processing tasks. The device features a buffered analog input, which provides uniform input impedance across a wide frequency range, and supports DDR and QDR LVDS output interfaces. The ADS42LB49IRGCT is part of the ADS42LBx9 family, known for its high linearity, low power consumption, and excellent spurious-free dynamic range (SFDR).
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 (Dual-Channel) |
| Resolution | 14-bit (also available in 16-bit configuration) |
| Maximum Clock Rate | 250 MSPS |
| Analog Input Type | Differential |
| Data Interface | LVDS - Parallel (DDR or QDR) |
| Input Full-Scale Range | 2 V PP and 2.5 V PP (SPI-Programmable) |
| Package Type | 64-Pin VQFN (9-mm × 9-mm) |
| Operating Temperature Range | -40°C to 85°C |
| Power Dissipation per Channel | 820 mW |
| Aperture Jitter | 85 fs |
| Channel Isolation | 100 dB |
| SNR at fIN = 170 MHz, 2 V PP | 73.2 dBFS |
| SNR at fIN = 170 MHz, 2.5 V PP | 74.9 dBFS |
| SFDR at fIN = 170 MHz, 2 V PP | 87 dBc (HD2 and HD3), 100 dBc (Non HD2 and HD3) |
| SFDR at fIN = 170 MHz, 2.5 V PP | 85 dBc (HD2 and HD3), 97 dBc (Non HD2 and HD3) |
Key Features
- Dual-channel operation with 14-bit and 16-bit resolution options
- Maximum clock rate of 250 MSPS
- Buffered analog input with high impedance input
- Flexible input clock buffer with divide-by-1, -2, and -4 options
- DDR or QDR LVDS output interface
- Internal dither for improved noise performance
- High channel isolation of 100 dB
- Low power consumption of 820 mW per channel
- Compact 64-Pin VQFN package (9-mm × 9-mm)
Applications
The ADS42LB49IRGCT is suitable for a variety of high-speed data acquisition and signal processing applications, including:
- Medical Imaging and Diagnostic Equipment
- Radar and Electronic Warfare Systems
- High-Speed Data Acquisition Systems
- Test and Measurement Equipment
- Wireless Communication Systems
Q & A
- What is the maximum clock rate of the ADS42LB49IRGCT?
The maximum clock rate of the ADS42LB49IRGCT is 250 MSPS. - What are the available resolutions for the ADS42LB49IRGCT?
The ADS42LB49IRGCT is available in both 14-bit and 16-bit resolutions. - What type of analog input does the ADS42LB49IRGCT support?
The ADS42LB49IRGCT supports differential analog inputs. - What are the supported output interfaces for the ADS42LB49IRGCT?
The ADS42LB49IRGCT supports DDR and QDR LVDS output interfaces. - What is the power dissipation per channel for the ADS42LB49IRGCT?
The power dissipation per channel for the ADS42LB49IRGCT is 820 mW. - What is the operating temperature range for the ADS42LB49IRGCT?
The operating temperature range for the ADS42LB49IRGCT is -40°C to 85°C. - What is the channel isolation of the ADS42LB49IRGCT?
The channel isolation of the ADS42LB49IRGCT is 100 dB. - What are the typical SNR and SFDR values for the ADS42LB49IRGCT at 170 MHz input frequency?
At 170 MHz input frequency, the typical SNR is 73.2 dBFS for 2 V PP and 74.9 dBFS for 2.5 V PP. The SFDR is 87 dBc (HD2 and HD3) and 100 dBc (Non HD2 and HD3) for 2 V PP, and 85 dBc (HD2 and HD3) and 97 dBc (Non HD2 and HD3) for 2.5 V PP. - What is the package type and size of the ADS42LB49IRGCT?
The ADS42LB49IRGCT comes in a 64-Pin VQFN package with dimensions of 9-mm × 9-mm. - What are some common applications for the ADS42LB49IRGCT?
The ADS42LB49IRGCT is commonly used in medical imaging, radar and electronic warfare systems, high-speed data acquisition systems, test and measurement equipment, and wireless communication systems.
