Overview
The ADS42LB49IRGCR is a high-performance, dual-channel analog-to-digital converter (ADC) produced by Texas Instruments. This component is part of the ADS42LBx9 family, which includes 14- and 16-bit resolution ADCs with a maximum clock rate of 250 MSPS. The ADS42LB49 is specifically designed for applications requiring high linearity, low power consumption, and flexible output interfaces.
The device features a buffered analog input that provides uniform input impedance across a wide frequency range, minimizing sample-and-hold glitch energy. It supports both DDR (Double Data Rate) and QDR (Quad Data Rate) LVDS (Low-Voltage Differential Signaling) output interfaces, making it versatile for various system architectures.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14-bit | |
| Maximum Clock Rate | 250 | MSPS |
| Analog Input Full-Scale Range | 2 VPP, 2.5 VPP | |
| Power Dissipation per Channel | 820 | mW |
| Aperture Jitter | 85 | fS |
| Channel Isolation | 100 | dB |
| SNR at fIN = 170 MHz, 2 VPP, –1 dBFS | 73.2 | dBFS |
| SFDR at fIN = 170 MHz, 2 VPP, –1 dBFS | 87 dBc (HD2 and HD3), 100 dBc (Non HD2 and HD3) | |
| Package Type | VQFN (RGC) | |
| Pins | 64 | |
| Operating Temperature Range | -40 to 85 | °C |
Key Features
- Dual-channel operation with 14-bit resolution
- Maximum clock rate of 250 MSPS
- Analog input buffer with high impedance input
- Flexible input clock buffer with divide-by-1, -2, and -4 options
- SPI-programmable 2 VPP and 2.5 VPP differential full-scale input
- 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
- 64-pin VQFN package (9-mm × 9-mm)
Applications
- Communication and Cable Infrastructure
- Multi-Carrier, Multimode Cellular Receivers
- Radar and Smart Antenna Arrays
- Broadband Wireless Systems
- Test and Measurement Systems
- Software-Defined and Diversity Radios
- Microwave and Dual-Channel I/Q Receivers
- Repeaters
- Power Amplifier Linearization
Q & A
- What is the maximum clock rate of the ADS42LB49IRGCR?
The maximum clock rate of the ADS42LB49IRGCR is 250 MSPS.
- What are the available resolutions for the ADS42LB49IRGCR?
The ADS42LB49IRGCR is available with 14-bit resolution.
- What type of output interface does the ADS42LB49IRGCR support?
The ADS42LB49IRGCR supports both DDR and QDR LVDS output interfaces.
- What is the power dissipation per channel for the ADS42LB49IRGCR?
The power dissipation per channel for the ADS42LB49IRGCR is 820 mW.
- What is the aperture jitter of the ADS42LB49IRGCR?
The aperture jitter of the ADS42LB49IRGCR is 85 fS.
- What is the channel isolation of the ADS42LB49IRGCR?
The channel isolation of the ADS42LB49IRGCR is 100 dB.
- What are the typical SNR and SFDR values at fIN = 170 MHz, 2 VPP, –1 dBFS?
The typical SNR is 73.2 dBFS, and the SFDR is 87 dBc (HD2 and HD3) and 100 dBc (Non HD2 and HD3).
- What is the package type and pin count of the ADS42LB49IRGCR?
The ADS42LB49IRGCR comes in a 64-pin VQFN (RGC) package.
- What is the operating temperature range of the ADS42LB49IRGCR?
The operating temperature range of the ADS42LB49IRGCR is -40 to 85°C.
- What are some common applications for the ADS42LB49IRGCR?
Common applications include communication and cable infrastructure, multi-carrier cellular receivers, radar and smart antenna arrays, broadband wireless systems, and more.
