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AD582:  Low-Cost Sample-and-Hold Amplifier

Product Details


The AD582 is a sample-and-hold amplifier consisting of a high performance operational amplifier, a low leakage analog switch and a JFET integrating amplifier – all fabricated on a single monolithic chip. An external holding capacitor, connected to the device, completes the sample-and-hold function.

With the analog switch closed, the AD582 functions like a standard op amp; any feedback network may be connected around the device to control gain and frequency response. With the switch open, the capacitor holds the output at its last level, regardless of input voltage.

Typical applications for the AD582 include sampled data systems, D/A deglitchers, analog de-multiplexers, auto null systems, strobed measurement systems and A/D speed enhancement.

The device is available in two versions: the "K" specified for operation over the 0 to +70° commercial temperature range and the "S" specified over the extended temperature range, -55°C to +125°C. All versions may be obtained in either the hermetic sealed, TO-100 can or the TO-116 DIP.

Product Highlights

  1. The specially designed input stage presents a high impedance to the signal source in both sample and hold modes (up to ±12V). Even with signal levels up to ±VS, no undesirable signal inversion, peaking or loss of hold voltage occurs.
  2. The AD582 may be connected in any standard op amp configuration to control gain or frequency response and provide signal inversion, etc.
  3. The AD582 offers a high, sample-to-hold current ratio: 107. The ratio of the available charging current to the holding leakage current is often used as a figure of merit for a sample and hold circuit.
  4. The AD582 has a typical charge transfer less than 2pC. A low charge transfer produces less offset error and permits the use of smaller hold capacitors for faster signal acquisition.
  5. The AD582 provides separate analaog and digital grounds, thus improving the device's immunity to ground and switching transients.
  6. The AD582 is available in versions compliant with MIL-STD-883. Refer to the Analog Devices Military Products Databook or current AD582/883B data sheet for detailed specifications.

FEATURES and BENEFITS

  • Suitable for 12-bit applications
  • High sample/hold currrent ratio: 107
  • Low acquisition time:
    6µ to 0.1%
  • Low charge transfer: <2pC
  • High input impedence in sample-and-hold modes
  • Connect in any op amp configuration
  • Differential logic inputs
  • MIL-STD-883 compliant versions available

Documentation

Title Content Type File Type
AD582: Low Cost Sample/Hold Amplifier Data Sheet (Rev A, 06/1986) (pdf, 208 kB) Data Sheets PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

AD582 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD582KD Status: Production 14 ld Bottom-Brazed CerDIP 14 Comm. Tube, 25 $33.51 $30.29 N  Material Info PCN Purchase
AD582KH Status: Production ROUND HEADER/METAL CAN 10 Comm. Tube, 100 $17.88 $16.16 N  Material Info PCN Purchase
AD582SD Status: Production 14 ld Bottom-Brazed CerDIP 14 Mil Tube, 25 $124.65 $124.65 N  Material Info PCN Purchase
AD582SD/883B Status: Production 14 ld Bottom-Brazed CerDIP 14 Mil Tube, 25 $130.70 $118.15 N  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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