Part # AD684 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD684 Four-Channel Sample-and-Hold Amplifier


Part Details:

a Four-Channel Sample-and-Hold Amplifier AD684* FEATURES FUNCTIONAL BLOCK DIAGRAM Four Matched Sample-and-Hold AmplifiersIndependent Inputs, Outputs and Control Pins500 ns Hold Mode Settling1 s Maximum Acquisition Time to 0.01% Low Droop Rate: 0.01 V/ s Internal Hold Capacitors75 ps Maximum Aperture JitterLow Power Dissipation: 430 mW0.3" Skinny DIP PackageMIL-STD-883 Compliant Versions Available PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS The AD684 is a monolithic quad sample-and-hold amplifier 1. Fast acquisition time (1 µs) and low aperture jitter (75 ps) (SHA). It features four complete sampling channels, each make the AD684 the best choice for multiple channel data controlled by an independent hold command. Each SHA is acquisition systems. complete with an internal hold capacitor. The high accuracy 2. Monolithic construction insures excellent interchannel SHA channels are self-contained and require no external matching in terms of timing and accuracy, as well as high components or adjustments. The AD684 is manufactured on a reliability. BiMOS process which provides a merger of high performance 3. Independent inputs, outputs and sample-and-hold controls bipolar circuitry and low power CMOS logic. allow user flexibility in system architecture. The AD684 is ideal for high performance, multichannel data 4. Low droop (0.01 µV/µs) and internally compensated hold acquisition systems. Each SHA channel can acquire a signal in mode error results in superior system accuracy. less than 1 µs and retain the held value with a droop rate of lessthan 0.01 µV/µs. Excellent linearity and ac performance make 5. The AD684 s fast settling time and low output impedance the AD684 an ideal front end for high speed 12- and 14-bit make it ideal for driving high speed analog to digital ADCs. converters such as the AD578, AD674, AD7572 and theAD7672. The AD684 has a self-correcting architecture that minimizeshold mode errors and insures accuracy over temperature. Each 6. The AD684 is available in versions compliant with MIL- channel of the AD684 is capable of sourcing 5 mA and STD-883. Refer to the Analog Devices Military Products incorporates output short circuit protection. Databook or current AD684/883B data sheet for detailedspecifications. The AD684 is specified for three temperature ranges. The Jgrade device is specified for operation from 0 to +70°C, the Agrade from ­40°C to +85°C and the S grade from ­55°C to+125°C. *Protected by U.S. Patent Number 4,962,325. REV. A Information furnished by Analog Devices is believed to be accurate andreliable. However, no responsibility is assumed by Analog Devices for itsuse, nor for any infringements of patents or other rights of third partieswhich may result from its use. No license is granted by implication or One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. otherwise under any patent or patent rights of Analog Devices. Tel: 617/329-4700 Fax: 617/326-8703 AD684­SPECIFICATIONS (TMIN to TMAX with VCC = +12 V 10%, VEE = ­12 V 10%, unless otherwise noted)


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AD684.pdf Datasheet