Overview
The ADS4249IRGC25, produced by Texas Instruments, is a dual-channel, 14-bit analog-to-digital converter (ADC) designed for high-performance and ultra-low power consumption. This device is part of the ADS42xx family and is well-suited for multi-carrier, wide-bandwidth communications applications. It operates on a single 1.8-V supply and features innovative design techniques to achieve high dynamic performance while minimizing power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 Bits | |
| Maximum Sample Rate | 250 MSPS | |
| Signal-to-Noise Ratio (SNR) | 71.7 dBFS at 170 MHz | |
| Spurious-Free Dynamic Range (SFDR) | 80 dBc at 170 MHz | |
| Differential Input Voltage Range | 2 VPP | |
| Analog Supply Current | 167-190 mA | |
| Digital Output Interface | LVDS, Parallel CMOS | |
| Package | 9-mm × 9-mm, 64-Pin VQFN | |
| Operating Temperature Range | –40°C to 85°C |
Key Features
- Ultra-Low Power Consumption: Total power of 560 mW at 250 MSPS with a single 1.8-V supply.
- High Dynamic Performance: 71.7 dBFS SNR and 80 dBc SFDR at 170 MHz.
- Programmable Gain: Up to 6 dB gain with SNR/SFDR trade-off.
- DC Offset Correction: Internal dc offset correction loop to cancel ADC offset.
- Output Interface Options: Double Data Rate (DDR) LVDS with programmable swing and parallel CMOS interface.
- Low Input Clock Amplitude Support: Down to 200 mVPP.
- Compact Package: 9-mm × 9-mm, 64-Pin VQFN PowerPAD™ package.
Applications
- Wireless Communications Infrastructure: Suitable for base stations and other wireless communication equipment.
- Software Defined Radios (SDRs): Ideal for SDR applications requiring high dynamic range and low power consumption.
- Power Amplifier Linearization: Used in systems that require precise analog-to-digital conversion for power amplifier linearization.
Q & A
- What is the maximum sample rate of the ADS4249IRGC25?
The maximum sample rate is 250 MSPS. - What is the resolution of the ADS4249IRGC25?
The resolution is 14 bits. - What are the available output interfaces for the ADS4249IRGC25?
The device supports both DDR LVDS and parallel CMOS output interfaces. - What is the power consumption of the ADS4249IRGC25 at 250 MSPS?
The total power consumption is 560 mW at 250 MSPS. - Does the ADS4249IRGC25 support programmable gain?
Yes, it supports programmable gain up to 6 dB with SNR/SFDR trade-off. - What is the operating temperature range of the ADS4249IRGC25?
The operating temperature range is –40°C to 85°C. - What package type is the ADS4249IRGC25 available in?
The device is available in a 9-mm × 9-mm, 64-Pin VQFN PowerPAD™ package. - Is the ADS4249IRGC25 suitable for wireless communications infrastructure?
Yes, it is suitable for wireless communications infrastructure and other high-bandwidth applications. - Does the ADS4249IRGC25 have internal references?
Yes, it includes internal references and eliminates the need for traditional reference pins and decoupling capacitors. - Is the ADS4249IRGC25 still in production?
No, the ADS4249IRGC25 is obsolete and no longer manufactured.
