Product category:
Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: AD6645
Edited by the Electronicstalk Editorial
Team on 11 October 2001
14bit A/D conversion at 105Msample/s
Analog Devices is claiming another industry breakthrough with the first 14bit ADC to run at 105Msample/s.
Analog Devices is claiming another industry breakthrough with the first 14bit ADC to run at 105Msample/s The AD6645 is more than 60% faster than its predecessor, released last year by ADI
This article was originally published on Electronicstalk on 2 Jul 2008 at 8.00am (UK)
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The new ADC enables multicarrier software radio architectures in wireless basestations to achieve higher levels of signal quality as well as to keep pace with future air interface standards.
Multistandard, or multicarrier, software-defined radio provides dramatic cost savings by allowing base station designers to program different standards in the field rather than developing separate, dedicated receiver platforms for the multiple wireless standards currently being promoted.
In addition, the AD6645 also serves other applications requiring high dynamic range, such as communications test equipment, satellite receiver ground stations and broadband wireless basestations.
Two grades of the AD6645 are available, featuring 105 or 80Msample/s sampling rates.
The two-tone spurious-free dynamic range (SFDR) is 100dB and the signal-to-noise ratio (SNR) is 74 or 70dB with 70 and 200MHz inputs, respectively.
The fast conversion rate of the AD6645 allows for more cost-effective designs for two major reasons.
First, it enables intermediate frequency (IF) sampling, which eliminates a down-conversion stage and the associated components.
The reduced part count improves the overall reliability of the base station.
Secondly, it allows designers to reduce costs by using less expensive analogue filters.
Using breakthrough devices such as the AD6645, ADI offers complete all-air-interfaces basestation signal chain solutions, including analogue RF and IF signal processing, data conversion, and digital signal processing.
The device is an extension of the core technology found in the AD664x family of high-performance convertors, and is part of ADI's SoftCell multicarrier transceiver chipset which includes components from ADI's VersaCOMM digital convertors, TxDACs, ADCs, and the SHARC family of DSPs.
These functional blocks are key to implementing a software radio platform.
The AD6645ASQ-80 is available in a thermally enhanced 52-lead PowerQuad 4 package, priced at $54 in 1000-piece quantities.
The AD6645ASQ-105 is offered in the same package, priced at $75 in 1000-piece quantities.
Samples of both chips are available now.
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