Overview
The ADS4449IZCRR is a high-performance, quad-channel, 14-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed for low power consumption and high spurious-free dynamic range (SFDR), making it ideal for various high-frequency applications. The ADS4449 features a maximum sampling rate of 250 MSPS, low-noise performance, and outstanding SFDR over a large input frequency range. It is packaged in a 144-terminal NFBGA (10.00 mm × 10.00 mm) and operates within a temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Resolution | 14 Bits | |
| Maximum Sampling Rate | 250 MSPS | |
| Power Dissipation per Channel | 365 mW | |
| SNR at 170-MHz IF | 69 dBFS | |
| SFDR at 170-MHz IF | 86 dBc | |
| Analog Input Full-Scale | 2 VPP | |
| Input Resistance (Differential) | 700 Ω | |
| Input Capacitance (Differential) | 3.3 pF | |
| Analog Input Bandwidth (3 dB) | 500 MHz | |
| Supply Voltage (AVDD33) | 3.3 V | |
| Supply Current (IAVDD33) | 51 mA | |
| Operating Temperature Range | –40°C to 85°C |
Key Features
- Quad-channel configuration for simultaneous sampling of four analog inputs.
- High-linearity and low-noise performance.
- DDR LVDS digital output interface for high-speed data transfer.
- Internal dither for improved spectral performance.
- Low power consumption with a total power dissipation of 1.47 W.
- High spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR).
- Support for various clock input modes including LVPECL, LVCMOS, and LVDS.
Applications
- Multi-carrier GSM cellular infrastructure base stations.
- RADAR and smart antenna arrays.
- Multi-carrier multi-mode cellular infrastructure base stations.
- Active antenna arrays for wireless infrastructures.
- Communications test equipment.
Q & A
- What is the maximum sampling rate of the ADS4449?
The maximum sampling rate of the ADS4449 is 250 MSPS. - How many channels does the ADS4449 support?
The ADS4449 supports four channels. - What is the resolution of the ADS4449?
The resolution of the ADS4449 is 14 bits. - What is the typical power dissipation per channel of the ADS4449?
The typical power dissipation per channel is 365 mW. - What is the SFDR at a 170-MHz input frequency?
The SFDR at a 170-MHz input frequency is typically 86 dBc. - What is the analog input full-scale range of the ADS4449?
The analog input full-scale range is 2 VPP. - What is the operating temperature range of the ADS4449?
The operating temperature range is –40°C to 85°C. - What type of digital output interface does the ADS4449 use?
The ADS4449 uses a DDR LVDS digital output interface. - What are some common applications of the ADS4449?
Common applications include multi-carrier GSM cellular infrastructure base stations, RADAR and smart antenna arrays, and communications test equipment. - What is the package type of the ADS4449?
The ADS4449 is packaged in a 144-terminal NFBGA (10.00 mm × 10.00 mm).
