Overview
The ADS41B49IRGZR is a 14-bit, 250 MSPS (Mega Samples Per Second) analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ultralow-power ADS4xxx ADC family and features integrated high-impedance analog input buffers. It is designed to achieve high dynamic performance while consuming extremely low power, making it suitable for a variety of high-performance applications.
The ADS41B49IRGZR supports both double data rate (DDR) low-voltage differential signaling (LVDS) and parallel CMOS digital output interfaces, allowing for flexible integration into different system architectures. The device also includes features such as programmable gain, DC offset correction, and support for low input clock amplitudes, enhancing its versatility and performance in various use cases.
Key Specifications
| Parameter | ADS41B49 | Unit |
|---|---|---|
| Resolution | 14 | Bits |
| Maximum Sample Rate | 250 | MSPS |
| SNR (Signal-to-Noise Ratio) at 170 MHz | 69.1 dBFS | dBFS |
| SFDR (Spurious-Free Dynamic Range) at 170 MHz | 82.5 dBc | dBc |
| Analog Input Voltage Range | 1.5 VPP | VPP |
| Analog Input Resistance at DC | 10 kΩ | kΩ |
| Analog Input Capacitance | 3.5 pF | pF |
| Analog Supply Current (IAVDD) | 115 mA | mA |
| Analog Input Buffer Supply Current (IAVDD_BUF) | 42 mA | mA |
| Output Buffer Supply Current (IDRVDD) - LVDS Interface | 90 mA | mA |
| Operating Temperature Range | -40°C to +105°C | °C |
| Package Type | VQFN-48 (7 mm × 7 mm) |
Key Features
- Integrated high-impedance analog input buffers with 2 pF input capacitance and 3 kΩ input resistance at 200 MHz.
- Ultralow power consumption: 180 mW for analog power, 96 mW for buffer power, and 135 mW for I/O power (DDR LVDS).
- High dynamic performance: SNR up to 69.1 dBFS and SFDR up to 82.5 dBc at 170 MHz.
- Programmable gain for SNR and SFDR trade-off.
- DC offset correction loop.
- Support for both DDR LVDS and parallel CMOS digital output interfaces.
- Low-swing LVDS mode to reduce power consumption.
- Adjustable LVDS output buffer strength to support 50-Ω differential termination.
Applications
- Power Amplifier Linearization
- Software Defined Radio (SDR)
- Wireless Communications Infrastructure
- Multi-carrier, wide bandwidth communications applications.
Q & A
- What is the maximum sample rate of the ADS41B49IRGZR?
The maximum sample rate of the ADS41B49IRGZR is 250 MSPS.
- What is the resolution of the ADS41B49IRGZR?
The resolution of the ADS41B49IRGZR is 14 bits.
- What are the power consumption levels for the ADS41B49IRGZR?
The device consumes 180 mW for analog power, 96 mW for buffer power, and 135 mW for I/O power (DDR LVDS).
- What types of output interfaces does the ADS41B49IRGZR support?
The device supports both DDR LVDS and parallel CMOS digital output interfaces.
- What is the operating temperature range of the ADS41B49IRGZR?
The operating temperature range is -40°C to +105°C.
- What is the package type of the ADS41B49IRGZR?
The package type is VQFN-48 (7 mm × 7 mm).
- Does the ADS41B49IRGZR have integrated analog input buffers?
Yes, it has integrated high-impedance analog input buffers.
- What are some key applications of the ADS41B49IRGZR?
Key applications include Power Amplifier Linearization, Software Defined Radio (SDR), and Wireless Communications Infrastructure.
- Can the gain of the ADS41B49IRGZR be programmed?
Yes, the gain can be programmed for SNR and SFDR trade-off.
- Does the ADS41B49IRGZR support DC offset correction?
Yes, it supports DC offset correction through an integrated DC offset correction loop.
