Tiny Analog Front Ends Shrink Test And Measurement, Wireless Communications, And Optical Networking Systems

DALLAS, Dec. 5, 2012 /PRNewswire/ -- Texas Instruments Incorporated (TI) (NASDAQ: TXN) today introduced two analog front ends (AFEs) that provide low power, high performance and space savings for test and measurement, wireless communications and optical networking equipment. The AFE7071 is a complete radio transmitter that reduces board space by up to 80 percent compared to discrete implementations. It integrates a dual digital-to-analog converter (DAC), tunable baseband filters, IQ modulator and digital quadrature modulation correction circuit. The AFE7070 adds a direct digital synthesizer (DDS) with 32-bit numerically controlled oscillator (NCO) and LVDS output buffer. For more information and to order samples of these new AFEs, visit www.ti.com/afe7070-pr.

Key features and benefits of the AFE7070 and AFE7071

• Highly integrated: Providing a dual 14-bit, 65-MSPS DAC, programmable low-pass filter and RF IQ modulator with an RF output range of 100 MHz to 2700 MHz in a single device simplifies design and reduces board space. 
• Small size: 7-mm x 7-mm package with multiplexed CMOS input is 80-perent smaller than typical discrete solutions to enable compact or mobile designs, such as small-cell base stations and portable test and measurement equipment.
• Flexible RF output: The devices are tunable from 100 MHz to 2700 MHz with output power up to 0.3 dBm to accommodate a wide range of frequencies and maximize system flexibility.
• High performance, low power: Adjacent channel power ratio is 66 dB with 5-MHz WCDMA and 61 dB with 20-MHz LTE at 2.1 GHz while using only 325 mW, more than 50 percent lower than discrete designs.
• Low output noise floor: 156 dBm/Hz enables high signal quality.

Additional features and benefits of the AFE7070

• Space-efficient, cost-effective: Direct digital synthesis with 32-bit NCO and LVDS output buffer for frequency translation. This enables space-efficient designs by reducing interface lines and components while providing a cost-effective method for optical time alignment and arbitrary waveform generation.
• Simplifies design: Integrated 800-MHz LVDS output can be used in a clock phase-locked loop (PLL) to drive the pre-scaler, eliminating the need for a separate analog-to-LVDS converter.
• Configurable digital input: Can accept input data as a 14-bit complex value or 16-bit NCO phase value for constant amplitude modulation.

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