High Performance Sample-Hold Amplifier Gives Engineers a Stand-Alone Alternative

· SHM-50 provides a stand-alone Sample-Hold solution

· Fast acquisition time with up to 0.005% accuracy

· Small 8-pin mini-DIP package

· TTL interface

April 2006 - C&D Technologies has introduced a miniature, high-speed, stand-alone, Sample-Hold Amplifier designed to provide highly accurate capture and hold of fast signals and pulses in a wide range of analog signal processing applications such as those found in high-speed, multi-channel, multiple-event pieces of equipment.

The SHM-50 provides an alternative to engineers who have previously only been able to obtain sample-hold functionality integrated within an Analog-to-Digital Converter. With a small-signal bandwidth of 70MHz, it is available in a through-hole or surface-mount 8-pin mini-DIP package. The device is a complete sample-hold circuit containing a precision MOS hold capacitor and a MOSFET switching configuration, resulting in faster switching and excellent feed-through attenuation of –78dB. A TTL interface is also included within the specification.

A FET input amplifier design allows a fast acquisition time of 40 nanoseconds for a 2V step to ±0.01% accuracy, and 50 nanoseconds to ±0.005% - equivalent to 14-bit accuracy. Fast sample-to-hold settling times of typically 30 nanoseconds to ±0.01% are also achieved while maintaining a considerably lower droop rate and an aperture uncertainty of just ±2 picoseconds.

Requiring a supply voltage of ±5V, the SHM-50 has a typical power consumption of 225mW. Operating temperature for the through hole version is 0ºC to +70ºC, while the SHM-50MM version is suitable for use between –55ºC and +125ºC.

With lead-times from stock to 6 weeks, the SHM-50 list price is $87.00 with 100 piece pricing in the range of $65.00

C&D Technologies, Inc. is a technology company that produces and markets systems for the conversion and storage of electrical power, including telecom/industrial batteries, rectifiers and electronics. Corporate headquarters are in Blue Bell, Pennsylvania, USA and the company is traded on the NYSE under the symbol ‘CHP’.

The Power Electronics Division of C&D Technologies, Inc. is headquartered in Mansfield, Massachusetts, USA. The division designs, manufactures and distributes DC/DC converters, AC/DC power supplies, magnetics, data acquisition devices and panel meters, and offers these products in custom, standard and modified-standard variations. These products, which are built to exacting requirements in ISO9000:2000-approved facilities, are typically used worldwide within telecommunications, computing, industrial and other high-tech applications.