TI Korea(CEO Kent Chun) has launched an analog front end that integrates digital I/Q demodulation and decimation functions for the first time in the industry. The AFE5809 is the industry's first analog front end (AFE) that reduces FPGA processing requirements in ultrasonic systems as well as ultrasonic applications such as sonar and non-destructive testing by integrating demodulation and decimation functions.

Additionally, by integrating a CWD (continuous wave Doppler) processor on-chip that enables blood flow velocity measurement, it is possible to significantly reduce the BOM (bill of materials) of medical ultrasound equipment. The new AFE5809 also has the advantage of allowing designers to optimize system performance through various optional power/noise combinations. (For samples, EVM orders, and details, refer to www.ti.com/afe5809-pr )

Key Features and Benefits of AFE5809
• Reduced FPGA processing requirements: By integrating a digital demodulator on-chip, data throughput and LVDS traces within the system are reduced, enabling more cost-effective designs
• Integrated CW (continuous wave) mixer: Enables blood flow velocity measurement by integrating a CWD mixer with low close-in phase noise of -156dBc/Hz at 1KHz spacing from a 2.5MHz carrier and a combined amplifier
• Industry's lowest noise and lowest power ultrasonic AFE with digital demodulation function: The AFE5809 consumes noise spec of 0.75nV/rtHz and 158mW power per channel, and each 14-bit, 65MSPS analog-to-digital converter (ADC) included in the AFE5809 provides 77dBFS SNR (signal-to-noise ratio) to enable clear image implementation
• Pre-set profiles: The digital I/Q demodulator includes up to 32 pre-set configuration profiles, enabling simplified design
• System optimization: The comprehensive integrated functions of AFE5809 optimize system performance for each ultrasound and ultrasonic application
o Programmable LNA (low-noise amplifier) with flexible dynamic terminals
o Excellent dynamic range with maximum gain of 54dB
o 12-bit and 14-bit ADCs providing up to 65MSPS LVDS output
o Digital I/Q demodulator with 1~64 decimation coefficients
o Programmable mode optimizes power and performance for various imaging methods
o Supports low-frequency signal processing (below 100KHz)

Tools and Support
The AFE5809EVM evaluation module is currently available for purchase at $299. It includes TINA-TI SPICE models, allowing designers to conveniently simulate the performance of the AFE5809.

Availability and Pricing
The AFE5809 is offered in a 15mm x 9mm, 135-pin BGA package and costs $87 per unit at a quantity of 1,000.