Texas Instruments ADC32RF45 Dual Channel ADCs
Texas Instruments ADC32RF45 Dual Channel Analog-to-Digital Converters (ADCs) are 14-bit 3.0GSPS dual-channel ADCs that support RF sampling with input frequencies up to 4GHz and beyond. Designed for a high signal-to-noise ratio (SNR), the ADC32RF45 delivers a -155 dBFS/Hz noise spectral density. It also offers an excellent dynamic range and channel isolation over a large input frequency range. The buffered analog input with on-chip termination provides uniform input impedance across a wide frequency range and minimizes sample-and-hold glitch energy.
Each ADC channel can be connected to a dual-band, digital down-converter (DDC) with up to three independent, 16-bit numerically-controlled oscillators (NCOs) per DDC for phase-coherent frequency hopping. Additionally, the ADC is equipped with front-end peak and RMS power detectors and alarm functions to support external automatic gain control (AGC) algorithms. The Texas Instruments ADC32RF45 supports the JESD204B serial interface with subclass 1-based deterministic latency using data rates of 12.3Gbps with up to four lanes per ADC.
Features
- 14-bit, dual channel, 3.0GSPS ADC
- -155dBFS/Hz noise floor
- RF input support (up to 4.0GHz)
- 70fS aperture jitter
- 95dB at fIN = 1.8GHz channel isolation
- Spectral performance (fIN = 900MHz)
- SNR: 60.6dBFS
- SFDR: 64dBc HD2, HD3
- SFDR: 72dBFS worst spur
- Spectral performance (fIN = 1.78GHz)
- SNR: 58.0dBFS
- SFDR: 63dBc HD2, HD3
- SFDR: 77dBFS worst spur
- On-chip digital down-converters
- Up to four DDCs (dual-band mode)
- Up to three independent NCOs per DDC
- On-chip input clamp for overvoltage protection
- Programmable on-chip power detectors with alarm pins for AGC support
- On-chip dither
- On-chip 50Ω termination
- Input full scale (1.35Vpp)
- Support for multi-chip synchronization
- JESD204B interface
- Subclass 1-based deterministic latency
- Four lanes per ADC at 12.3Gbps
- 3.2W/Ch at 3.0GSPS power dissipation
- 72-pin VQFN package (10mm x 10mm)
Applications
- Multi-band, multi-mode 2G, 3G, 4G cellular receivers
- Phased array radars
- Electronic warfare
- Cable infrastructure
- Broadband wireless
- High-speed digitizers
- Software-defined radios
- Communications test equipment
- Microwave and Millimeter-Wave receivers
Videos
Functional Block Diagram
Associated Development Tools
Texas Instruments ADC32RF45EVM Evaluation Module (EVM)
Demonstrates the performance of the ADC32RF45, a dual 3Gsps 14-bit ADC with the JESD204B interface.
Texas Instruments TSW40RF80EVM Evaluation Module (EVM)
Two-transmit two-receive (2T2R) RF-sampling transceiver reference design.