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RF-Sampling Transceivers Embed Four ADCs and Four DACs

Texas Instruments (TI) has introduced two new RF-sampling transceivers that integrate four analog-to-digital converters (ADCs) and four digital-to-analog converters (DACs) in a single chip. TI says the device offers the industry’s widest frequency range, highest instantaneous bandwidth and 75% smaller design footprint than a discrete solution. The quad-channel AFE7444 (shown) and dual-channel AFE7422 transceivers help engineers more easily achieve multiantenna, direct RF sampling for radar, software defined radio and wireless 5G applications.

Offering the highest IBW among radio frequency (RF)-sampling transceivers according to TI, the AFE7444 and AFE7422 enable engineers to achieve up to 600% more data throughput. While sampling up to 9 Gsamples per second (GSPS) per DAC and up to 3 GSPS per ADC, the AFE7444 receives and transmits up to 800 MHz of information from each of the four antennae, and the AFE7422 receives and transmits 1.2 GHz from each of the two antennae. The new RF-sampling wideband transceivers give engineers flexibility to design applications covering any frequency from 10 MHz to 6 GHz.

The AFE7444 and AFE7422 enable engineers to support up to eight antennae and 16 RF bands with only one device. The AFE7444 and AFE7422 also allow engineers to directly sample input frequencies into C-band without the need for additional frequency conversion stages, eliminating local oscillators, mixers, amplifiers and filters in designs. Additionally, the two transceivers’ architecture allows for greater programmability than traditional RF solutions, and flexible decimation options enable optimization of data bandwidth. With four ADCs and four DACs in one chip, the AFE7444 and AFE7422 help engineers significantly reduce design cycles that are associated with the manufacturing and testing phases required when designing with discrete components.

Measuring 17 mm by 17 mm, TI’s RF-sampling transceivers help save engineers 75% of board space when compared to using discrete RF-sampling data converters. The integration and small size of the AFE7444 and AFE7422 enable engineers to optimize transceiver proximity to the antenna, enabling digital beam forming in high-frequency and high-density antenna arrays.

The AFE7444EVM and AFE7422EVM evaluation modules, available today from the TI store and authorized distributors. The evaluation modules are priced at $2,499 and $1,999 respectively. Pricing for the AFE7444 quad-channel, wideband RF-sampling transceiver in 100-unit quantities starts at $1,749.90. That’s for a 17-mm-by-17-mm, FCBGA package. Pricing for the AFE7422 dual-channel, wideband RF-sampling transceiver in a 17-mm-by-17-mm FCBGA package starts at $1,249.90 for 100 units.

Texas Instruments | www.ti.com

 

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