Overview
The ADS41B29IRGZR, produced by Texas Instruments, is a 12-bit, 250 MSPS (mega-samples per second) analog-to-digital converter (ADC) that is part of the ultralow-power ADS4xxx family. This device features an integrated high-impedance analog input buffer, which ensures constant performance and input impedance across a wide frequency range. The ADS41B29IRGZR is designed to achieve high dynamic performance while consuming extremely low power, making it suitable for various high-speed and power-sensitive applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 | Bits |
| Maximum Sample Rate | 250 | MSPS |
| Analog Input Voltage Range | 1.5 | VPP |
| Differential Input Resistance | 10 | kΩ |
| Differential Input Capacitance | 3.5 | pF |
| Analog Input Bandwidth | 800 | MHz |
| SNR (at 170 MHz) | 69 | dBFS |
| SFDR (at 170 MHz) | 82.5 | dBc |
| Output Interface | DDR LVDS, Parallel CMOS | |
| Power Consumption (Analog, Buffer, I/O) | 180 mW, 96 mW, 135 mW | mW |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package | VQFN-48 (7 mm × 7 mm) |
Key Features
- Integrated high-impedance analog input buffer 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.
- High dynamic performance: SNR of 69 dBFS and SFDR of 82.5 dBc at 170 MHz input frequency.
- Programmable gain for SNR and SFDR trade-off.
- DC offset correction capability.
- Support for low input clock amplitude.
- Double Data Rate (DDR) LVDS and parallel CMOS digital output interfaces.
- Low-swing LVDS mode to reduce power consumption.
- Adjustable LVDS output buffer strength.
Applications
- Power Amplifier Linearization
- Software Defined Radio
- Wireless Communications Infrastructure
- Multi-carrier, wide bandwidth communications applications.
Q & A
- What is the maximum sample rate of the ADS41B29IRGZR?
The maximum sample rate is 250 MSPS. - What is the resolution of the ADS41B29IRGZR?
The resolution is 12 bits. - What types of output interfaces does the ADS41B29IRGZR support?
The device supports DDR LVDS and parallel CMOS digital output interfaces. - What is the power consumption of the ADS41B29IRGZR?
The power consumption is 180 mW for analog power, 96 mW for buffer power, and 135 mW for I/O power. - What is the operating temperature range of the ADS41B29IRGZR?
The operating temperature range is –40°C to +85°C. - Does the ADS41B29IRGZR have DC offset correction capability?
Yes, it has an integrated DC offset correction loop. - What is the analog input bandwidth of the ADS41B29IRGZR?
The analog input bandwidth is 800 MHz. - What are some of the key applications of the ADS41B29IRGZR?
Key applications include power amplifier linearization, software-defined radio, and wireless communications infrastructure. - Does the ADS41B29IRGZR support low input clock amplitude?
Yes, it supports low input clock amplitude. - What is the package type and size of the ADS41B29IRGZR?
The package type is VQFN-48, and the size is 7 mm × 7 mm.
