Archived Press Releases


18 Bit Integrating Dual Slope A/D Converter Front-End For Precision Digital Multimeter Applications

Sunnyvale, CA March 20, 1999 -- Advanced Linear Devices, Inc., announces a family of monolithic CMOS analog processor chips that implement precision, low power, low noise integrating dual slope A/D converters having a resolution of 16, 17 & 18 bits, plus sign bit and overrange bit. These devices are ideally suited for a variety of high accuracy line powered and portable digital multimeter applications requiring 4 1/2 to 5 1/2 digit plus sign measurement resolution.

Designated the ALD500 Series, these front-end analog processors feature low linearity errors typically 0.001% full scale, 10mW total power dissipation, 2pA input current at 0V, +/- 3.5V input signal range, and a 1µs fast zero-crossing comparator. Conversion speed can be regulated by an external microprocessor under software control or by utilizing fixed logic digital inputs.

Typical applications for the ALD500 A/D Converter include sensor and scientific measurement add-on modules and boards for PC based systems. Also, PCMCIA lap top computer add-on precision multimeters, battery operated DVMs with on-board microcontroller and other custom ASIC based systems which demand higher analog measurement accuracy than available from generic 3 1/2 digit devices.

ALD500 prices start from $ 2.19 US in 10k pcs volume for standard ALD500 devices to $2.83 for the "AU" 18 bit grade. Industrial temperature grade devices are also available. Standard packaging includes 16-pin plastic DIP and small outline SOIC. Evaluation quantities are available from stock.

About Advanced Linear Devices, Inc. Advanced Linear Devices, Inc. develops and manufactures a full line of precision CMOS linear integrated circuits, including analog switches, D/A converters, voltage comparators, operational amplifiers, conventional and EPAD® (Electrically Programmable Analog Device) MOSFET transistors. Most standard devices are available as ASIC cells for the development of semi-custom integrated circuits.
Download Data Sheet ALD500AU/ALD500A/ALD500