Analog Devices Releases Low-Power Single-Supply ADC Drivers for Low-Voltage, 14-Bit Converters

Analog Devices, Inc. (ADI), a world leader in semiconductors for high-performance signal processing applications and leading supplier of signal conditioning technology, introduced today low-power, low-noise drivers for 14-bit ADCs (analog-to-digital converters). The ADA4930-1 and ADA4930-2 ultra-low-noise ADC drivers are capable of driving dc to 1.35-GHz signals while consuming only 115 mW (milliWatts) of power and operating with a single supply. The new ADC drivers feature one of the industry's lowest noise specification of 1.2 nV/rt-Hz and low distortion in the frequency range of 20 MHz to 100 MHz. The combination of low noise and low distortion ensures more accurate measurement and signal representation for 14-bit ADCs used in electronic test and measurement equipment, data acquisition systems, wireless direct-conversion receivers and other wideband applications with data throughput of 40 MSPS (million samples per second) to 200 MSPS. View product page Download data sheet Watch video Free, online ADIsimDiffAmp design tool The ADA4930-1 and ADA4930-2 ultra-low-noise ADC drivers feature a 0.9-V output common mode voltage and are ADI's first single-supply ADC drivers capable of driving the input of a dc-coupled, 1.8-V ADCs all the way to ground. This eliminates the second voltage supply required by other ADC drivers and reduces cost, power use and board space. The ADA4930-2 dual-channel ADC driver works well with ADI's AD9640 dual ADC, while the ADA4930-1 single-channel ADC driver is suited to operate with ADI's AD9255 single ADC. "The ADA4930 ADC driver offers one of the lowest input-voltage noise specifications of any high-frequency ADC driver at a third less power consumption than competing products," said Jim Doscher, product line director, High Speed Linear Products, Analog Devices. "For analog circuit designers who need dc-coupled ADC signal paths for their high-frequency designs, the ADA4930 series drives high fidelity signals at a much wider bandwidth than competing devices, while removing the need for a second power supply." Key features of the ADA4930 Ultra-low-noise ADC Drivers:

• 1.2-nV/?Hz input voltage noise
• 1.8-V, 3.3-V or 5-V single-supply operation
• 0.9-V common-mode output on single supply
• Low harmonic distortion of -103 dBc HD2 @ 10 MHz to -75 dBc HD2 @ 100 MHz
• -3 dB bandwidth of 1.35 GHz at Gain = 1
• Differential-to-differential or single-ended-to-differential operation