AD644JH

 AD644KH

 AD644LH

 AD644SH

 AD644SH/883

The AD644 is a pair of matched high speed monolithic FET input operational amplifiers fabricated with the most advanced bipolar, JFET and laser-trimming technologies. The AD644 offers matched bias currents that are significantly lower than currently available monolithic dual BiFET operational amplifiers: 35 pA max, matched to 25 pA for the AD644K and L, 75 pA max matched to 35 pA for the AD644J and S. In addition, the offset voltage is laser trimmed to less than 0.5 mV, and matched to 0.25 mV for the AD644L, 1.0 mV and matched to 0.5 mV for the AD644K, utilizing Analog Devices' laser-wafer trimming (LWT) process.

The tight matching and temperature tracking between the operational amplifiers is achieved by ion-implanted JFETs and laser-wafer trimming. Ion-implantation permits the fabrication of precision, matched JFETs on a monolithic bipolar chip. This process optimizes the ability to produce matched amplifiers which have lower initial bias currents than other popular BiFET op amps. Laser-wafer trimming each amplifier's input offset voltage assures tight initial match and superior IC processing guarantees offset voltage tracking over the temperature range.

AD644 is recommended for applications in which both excellent ac and dc performance is required. The matched amplifiers provide a low cost solution to true wideband instrumentation amplifiers, low dc drift active filters and output amplifiers for four quadrant multiplying D/A converters such as the AD7541, 12-bit CMOS DAC.

The AD644 is available in four versions: the "J", "K" and "L" are specified over the 0°C to +70°C temperature range and the "S" over the -55°C to +125°C operating temperature range

企业名：湖人半导体（深圳）有限公司

类型：贸易/代理/分销

电话： 0755-82578272
0755-82577852

手机：16670529611
13302942150

联系人：王小姐/雷小姐

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邮箱：hurenbandaoti@chinaxilinx.com

地址：广东深圳深圳市福田区华强北街道福强社区华强北路1002号赛格广场6010A