Wilmington, MAAnalog Devices is introducing the industry's first single-chip RF VGA (variable-gain amplifier/attenuator) that operates at RF power levels for wireless infrastructure equipment. The ADL5330 is the first monolithic VGA to provide broadband operation from 1 MHz to 3 GHz with a precision 60-dB linear-in-dB gain-control range.
Unlike conventional discrete solutions that require many external components, the single-chip ADL5330 integrates broadband amplifiers and attenuators, offering considerable savings in board area, component count and solution cost as compared to discrete implementations. The precision linear-in-dB control interface further simplifies and eases circuit design.
The ADL5330 provides 60 dB dynamic gain and attenuation (approximately
+20 dB gain and -40 dB attenuation), an output power level of +22 dBm
(1-dB compression point), an output third-order intercept (OIP3) of + 31 dBm at 1 GHz and a noise figure (NF) of 8 dB.
The wide dynamic range of the ADL5330, combined with its low distortion and low noise, makes the device suited for transmit signal paths--at both RF and IF frequencies--within wireless infrastructure equipment such as cellular base stations (CDMA, W-CDMA, GSM), point-to-point and point-to-multipoint radio links, satellite equipment, wireless local loop and broadband access services.
The ADL5330 works with the company's I/Q modulators (AD8345, AD8346 and AD8349) and power detectors (AD8313, AD8314 and AD8362). Using the ADL5330 in conjunction with these devices can enable a complete transmit signal path.
The ADL5330 single-chip VGA is currently sampling in 24-lead (4 mm x 4
mm) chip-scale packaging (CSP) and is priced at $4.98 per unit in 1,000-piece quantities. Full production will begin in February 2005.
For more information:
ADL5330 Data Sheet
Analog Devices, Inc. +1-800-262-5643