Mixed Signal/Analog

Analog Devices’ new 2.8-GSPS dual 16-bit converter is aimed at telecommunications system manufacturers that require microwave frequencies in point-to-point wireless backhaul equipment. The 16-bit AD9136 and 11-bit AD9135 dual D/A converters achieve up to 70 percent higher signal bandwidth than competing devices while enabling designers to support emerging E-band (71-76 GHz and 81-86 GHz) frequencies being adopted by wireless carriers to sup...

Three new Analog Devices converters including a 16-bit digital to analogue devices are available at Richardson RFPD.  The new devices also include an analogue-to-digital converter and a dual analogue-to-digital converter. All of the devices are suitable for a range of applications, including 3G/4G cellular infrastructure, aerospace and defence, and instrumentation. 

Texas Instruments has introduced the first devices in a high-voltage family of SAR ADCs. Claimed to provide the industry’s lowest gain drift, offset voltage and offset drift, the eight-channel ADS8688 and four-channel ADS8684 allow an input of up to ±10.24V from a single 5V supply, significantly simplifying system power requirements.

For optimum performance, an ADC’s sample clock inputs (CLK+ and CLK−) should be driven with a differential signal. This signal is typically AC-coupled to the CLK+ and CLK− pins via a transformer or capacitors. These pins are biased internally and require no additional biasing. By Ian Beavers, Staff Engineer, Analog Devices.

Claimed to be the fastest, most accurate, lowest power A/D converter in the industry, the 16-bit AD7981 has been unveiled by Analog Devices. The company claims that the device is more than twice as fast as existing converters and provides error-free operation at temperatures of up to 175°C. The device, with sample rates up to 600-kSPS, scales power linearly using only 4.65 mW at a full speed of 600 kSPS and 70 µW at 10 kSPS. 

The Wideband Digital Down-Converter (Wideband DDC) IP core has been introduced by RFEL. Designed to accept wideband digitised data at sample rates of up to 3.6GS/s, the IP core supports first or second Nyquist bandwidths of up to 1.8GHz. From anywhere within the chosen input Nyquist band, signals with bandwidths as high as 180MHz can be down-converted to I/Q.

Energy and water metering can now be made more accurate by an order of magnitude says Maxim Integrated by using the MAXREFDES70# ultrasonic flow meter system. Its low power attributes mean it can operate for up to 20 years on a single “A”- size battery. It will see off the traditional mechanical flow meters prone to friction and contaminants, which causes inaccurate meter readings.

The first product in the company's Timberwolf family, Microsemi has claimed that the ZL38040 audio processor delivers best-in-class HD voice communication solutions for the enterprise hands-free speakerphone markets. The device incorporates an advanced wideband acoustic echo canceller for echo cancellation and noise reduction in HD audio speaker phone and IP phone applications.

Designed for high-speed data acquisition systems which require a high level of accuracy, precision and power efficiency, a family of rail-to-rail amplifiers have been introduced by Analog Devices. The 100MHz ADA4805-1 (single) and ADA4805-2 (dual) amplifiers feature DPS which allows users to manage power consumption by shutting-down the amplifier between ADC samples.

With best in class settling time, noise and distortion, the ADA4805 minimises the power consumption for portable and battery-powered high speed data acquisition systems without sacrificing the high performance requirement.