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AD684:  Monolithic Quad Sample-and-hold Amplifier (SHA)

Product Details

The AD684 is a monolithic quad sample-and-hold amplifier (SHA). It features four complete sampling channels, each controlled by an independent hold command. Each SHA is complete with an internal hold capacitor. The high accuracy SHA channels are self-contained and require no external components or adjustments. The AD684 is manufactured on a BiMOS process which provides a merger of high performance bipolar circuitry and low power CMOS logic.

The AD684 is ideal for high performance, multichannel data acquisition systems. Each SHA channel can acquire a signal in less than 1 µs and retain the held value with a droop rate of less than 0.01 µV/µs. Excellent linearity and ac performance make the AD684 an ideal front end for high speed 12- and 14-bit ADCs.

The AD684 has a self-correcting architecture that minimizes hold mode errors and insures accuracy over temperature. Each channel of the AD684 is capable of sourcing 5 mA and incorporates output short circuit protection.

The AD684 is specified for three temperature ranges. The J grade device is specified for operation from 0 to +70°C, the A grade from -40°C to +85°C and the S grade from -55°C to +125°C.

Functional Block Diagram for AD684

AD684 Diagram
Functional Block Diagram for AD684


Title Content Type File Type
AD684: Four-Channel Sample-and-Hold Amplifier Data Sheet (Rev A, 08/1991) (pdf, 362 kB) Data Sheets PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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Price, packaging, availability

AD684 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
5962-9201301MEA Status: Production 16 ld CerDIP 16 Mil Tube, 25 $174.51 $157.74 N  Material Info PCN Purchase
AD684AQ Status: Production 16 ld CerDIP 16 Ind Tube, 25 $52.87 $47.80 N  Material Info PCN Purchase
AD684JQ Status: Production 16 ld CerDIP 16 Comm. Tube, 25 $44.07 $39.84 N  Material Info PCN Purchase
AD684SQ Status: Production 16 ld CerDIP 16 Mil Tube, 25 $172.99 $172.99 N  Material Info PCN Purchase
AD684SQ/883B Status: Production 16 ld CerDIP 16 Mil Tube, 25 $179.75 $162.48 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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