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Product category: Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: Convertors in chip scale packaging
Edited by the Electronicstalk Editorial Team on 27 September 2002

Convertors shrink to
chip scale packaging

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Analog Devices reckons it is the first to offer high-speed convertors in CSP technology, which increases the design flexibility and reduces the package size by up to 87%

Analog Devices reckons it is the first to offer high-speed convertors in CSP technology, which increases the design flexibility and reduces the package size by up to 87%, without compromising superior performance levels. ADI has initially applied its new streamlined design to select high-speed and precision data convertor products.

Other parts, including amplifiers, power management devices, and switches/muxes will soon be available in CSP as well.

The package design is especially useful for applications such as ultrasound and imaging, where multiple signal channels rapidly increase the number of components needed.

Furthermore, the performance and small footprint are equally appropriate for customer premise communications equipment, such as set-top boxes, wireless modems, and LMDS transceivers, where cost and size are key drivers.

CSP technology allows the placement of ICs, regardless of the physical configuration of the die, into standard square packages.

This makes it easier to provide pin compatibility across families and across generations of product, giving customers simple migration paths for modifying the end-system.

Also, implementing high-performance convertors in application specific integrated circuits (ASICs), can be very risky and, in many cases, desired performance levels cannot be attained.

CSP convertors provide designers with the option to not integrate the convertor and leave it outside the ASIC, thereby achieving the desired performance level without paying a real-estate premium.

"Analog Devices continues to devise methods for applying leading-edge packaging technology without sacrificing product performance", said Carl Roberts, director of advanced packaging and engineering fellow at Analog Devices.

"Our new chip-scale packaging maintains all the advanced features design engineers expect from ADI products while helping our customers increase design flexibility, reduce board space and lower costs".

The AD9748/40/42/44 is a family of high-performance, competitively priced transmit DACs (3rd generation TxDAC family) with 8/10/12/14bit resolutions.

This pin-compatible family is offered in a 32-lead CSP, which measures only 5 x 5mm - 87% smaller than an SOIC.

With dynamic performance of up to 83dBc SFDR at 5MHz, there was no compromise in performance as this industry-standard high-performance DAC family migrated to CSP technology.

The AD9215, AD9235, and AD9236 are a pin-compatible family of ADCs offering resolutions of 10 and 12bit, and sampling rates up to 105Msample/s.

Offered in 32-lead CSP, this family delivers SNR (to Nyquist) of up to 70dB for precision-driven applications, where space is a consideration.

Portable instrumentation, medical ultrasound, and communications systems are some of the end-systems that will benefit from superior performance in a smaller package.

The AD7490 is a 12bit, 1Msample/s, 16-channel successive-approximation (SAR) analogue-to-digital convertor (ADC).

It is appropriate for multichannel applications such as optical networking, where multiple temperatures are monitored for laser frequency control and power is measured to determine gain.

In addition to the 28-pin TSSOP, the AD7490 is now also available in 32-pin leadless chip-scale package.

The ADG732 is a 32-channel or dual 16-channel analogue multiplexer manufactured in CMOS and designed for telecom network systems.

The ADG732 is available in 48-pin TQFP and now also in 48-pin leadless chip-scale package.

The ADuC831/2/4 MicroConverters are fully integrated 12bit data acquisition systems-on-a-chip.

They feature precision A/D and D/A conversion and a Flash memory-based microcontroller on a single chip.

In addition to the 52-pin PQFP, these devices are now also available in 8 x 8mm 56-pin leadless chip-scale packages.

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