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RFMD’s products enable worldwide mobility, provide enhanced connectivity and support advanced functionality in the cellular handset, wireless infrastructure, wireless local area network (WLAN), CATV/broadband and aerospace and defense markets. The Greensboro, N.C. headquartered firm is recognized for its diverse portfolio of semiconductor technologies and RF systems expertise.
Analog Devices Unveils Highly integrated SiGe BiCMOS and GaAs RF/IF Amplifier
The firm’s latest variable gain control amplifiers are claimed to provide unprecedented levels of performance and integration at RF and IF Frequencies. The ADL52XX series combines multiple functions in single chip, achieving significant BOM savings and breakthrough radio performance.
Analog Devices, a global leader in high- performance semiconductors for signal-processing applications and RF integrated circuits, has introduced a series of highly integrated RF/IF variable gain amplifiers (VGAs).
ADI’s new ADL5201, ADL5202, ADL5240 and ADL5243 variable gain amplifiers offer breakthrough levels of integration—combining up to four discrete RF/IF blocks into a single device. With this unprecedented level of integration, radio system manufacturers can realize a significant reduction in component count and a major savings in BOM (bill of materials) cost.
In addition to unsurpassed integration, the new VGAs offer industry-leading performance, linearity and flexibility that make them well-suited for demanding applications, such as cellular base stations, industrial/instrumentation and defense equipment.
“These new RF / IF variable gain amplifiers further expand ADI’s commitment to offering best-in-class levels of integration and performance for both RF
and IF applications,” said Peter Real, VP of Linear and RF products, Analog Devices.
“Both product families provide the user with flexibility to select their preferred parallel or serial formats, and offer fine 0.5dB digital gain steps. This approach simplifies and eases system design, decreases footprint and enables designers of equipment such as next generation base stations to reduce component count, board area, supply lines and cost,” he continued.
The ADL5201 and its dual version, the ADL5202, are digitally controlled, IF variable gain amplifiers designed to support high IF sampling receiver designs that require precise gain control, high IP3 and a low noise figure for new broadband radio designs. The new VGAs combine highest dynamic range with lowest distortion and noise figures for IF frequencies up to 400 MHz.
The ADL5201 and ADL5202 are ideally suited for driving high-speed, next generation ADCs such as ADI’s AD9268. The new VGAs incorporate proprietary distortion cancellation techniques that enable them to achieve the industry’s highest linearity at more than 47 dBm output IP3 and noise figure of 6 dB.
The ADL5201 and ADL5202 provide gain control range of 31.5 dB with 0.5 dB resolution and are capable of supporting serial and parallel interface modes. The ADL5201 and ADL5202 were developed on an advanced SiGe BiCMOS process which enables the reduction in component count, power and supply voltages.
Operating in the 100 MHz to 4000 MHz frequency range, the ADL5240 and ADL5243 RF/IF digitally
October 2010
www.compoundsemiconductor.net 103
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