8-Bit, Complete, 32 MSPS A/D Converter
The input of the AD9280 has been designed to ease the development of both imaging and communications systems. The user can select a variety of input ranges and offsets and can drive the input either single-ended or differentially.
The sample-and-hold amplifier (SHA) is equally suited for both multiplexed systems that switch full-scale voltage levels in successive channels and sampling single-channel inputs at frequencies up to and beyond the Nyquist rate. AC-coupled input signals can be shifted to a predetermined level, with an onboard clamp circuit. The dynamic performance is excellent.
The AD9280 has an onboard programmable reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the application.
A single clock input is used to control all internal conversion cycles. The digital output data is presented in straight binary output format. An out-of-range signal (OTR) indicates an overflow condition which can be used with the most significant bit to determine low or high overflow.
The AD9280 can operate with a supply range from +2.7 V to +5.5 V, ideally suiting it for low power operation in high speed applications.
The AD9280 is specified over the industrial (-40°C to +85°C) temperature range.
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Designing Power Supplies for High Speed ADC
Correlating High-Speed ADC Performance to Multicarrier 3G Requirements
by Brad Brannon (Mobile Dev Design, 6/1/2003)
DNL and Some of its Effects on Converter Performance
... by Brad Brannon, Analog Devices, Inc. (Wireless Design & Development, June 2001)
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