Analog Devices introduces 16-bit SAR converter
Analog Devices, Inc. (NYSE:ADI), a provider of high-performance semiconductors for signal processing applications and a supplier of data converters, introduced what the company claims is the first 1 MSPS (mega sample per second), 16-bit SAR (successive-approximation register) analog-to-digital converter (ADC). SAR converters are widely considered the most cost-effective technology for applications that require very precise digital modeling of analog signals. The AD7671 PulSAR converter doubles performance for a variety of high-precision applications, including medical instrumentation, spectrum analyzers, data acquisition systems, scanners, wired communications, and fiber optic networking equipment.
The AD7671's conversion rate is twice that of what was previously available on the market and uses only 115 milliwatts (mW)--half the power used by other 16-bit SAR converters. Many applications benefit from this faster response time. For example, optical switches can direct information packages more quickly, and data acquisition systems can respond faster to external stimuli and better perform key functions, such as moderating temperatures.
The AD7671 has no data latency, and it operates at three different speeds, including 1 MSPS "warp" mode for asynchronous sampling applications, 800 kSPS "normal" mode, and an "impulse" mode, in which power consumption varies with throughput. This low-power device uses a single 5 Volt power supply and typically dissipates only 115 mW, even less in the impulse mode. The device also offers a power-down mode to further extend battery life.
The AD7671's flexibility makes it easy for the devices to interface with the rest of the circuit. It accommodates variable input ranges by offering bipolar/unipolar inputs. It also offers calibration and error correction circuits, an internal clock, and both 8- or 16-bit and two-wire serial interfaces.
With its compact, 9x9 mm 48-lead LQFP (low-profile quad flat pack) package, the AD7671 saves board space, is pin compatible with the ADI PulSAR family of 16-bit SAR converters, and is specified to operate from -40 to +85 degrees Celsius.
The AD7671 PulSAR ADC is priced at $25 in 10,000-piece quantities. Evaluation boards and production quantities are now available.
About Analog Devices:
Analog Devices is a manufacturer of precision high-performance integrated circuits used in analog and digital signal processing applications.