News just out...
Needed for High-Frequency Transceiver Designs
This Easy-to-Implement, Low-Power, Low-Cost Log-Amp
Comes Packaged in a Tiny 16-Lead TSSOP
NORWOOD, Mass., Nov. 20 /PRNewswire/ -- Analog Devices, Inc. (NYSE: ADI)
extends its leadership position in RF/IF Measurement and Control ICs by
announcing a 500-MHz, 100-dB logarithmic amplifier, the AD8309. Until now, it
required a lot of work to coax the kind of dynamic range engineers needed from
their high-frequency transceiver designs. The AD8309 provides both
logarithmic and limiter outputs for accurate phase detection in PSK
(phase-shift keying) and FSK (frequency-shift keying) applications including
CDMA (Code Division Multiple Access) and GSM (Global System for Mobile
communications).
Designed with attention to ease-of-implementation, temperature stability,
minimizing of external components, low power and low cost, the AD8309 detects
the RF envelope of the signal, so engineers do not have to demodulate it. The
limiter outputs provide a hard-limited signal as a differential current from
open collector outputs. The output buffer provides an adjustable and
temperature-stable output.
The 500-MHz bandwidth, high accuracy and temperature stability make this
product well-suited for high-speed signal strength measurement in RF/IF
applications such as cellular basestations and radar. The bandwidth,
accuracy, dynamic range and low noise also make this log amp well-suited for
applications which require wide dynamic range capability for compression
(log conversion) prior to digitization.
The AD8309 is packaged in a 16-lead TSSOP package and is fully specified
at +3-V and +5-V power supplies. Operating temperature range is from --
40 to +85 degrees Celsius. This logarithmic amplifier is available now and
sells for $7.75 in 1,000-piece quantities. For more information on
logarithmic amplifiers, including tutorials, application notes and samples,
visit analog.com.
With fiscal 1997 sales of $1.24 billion, Analog Devices (NYSE: ADI) is a
leading manufacturer of precision high-performance integrated circuits used in
analog and digital signal processing applications. Headquartered in Norwood,
Massachusetts, the company employs approximately 7,500 people worldwide and
has manufacturing facilities in Massachusetts, California, North Carolina,
Ireland, the Philippines and Taiwan.
Readers should contact: Analog Devices, Inc., Ray Stata Technology
Center, 804 Woburn Street, Wilmington, MA 01887; Tel: 781-937-1428,
Fax: 781-937-1021
SOURCE Analog Devices, Inc.
-0- 11/20/98
/NOTE TO EDITORS: Send sales leads to Analog Devices Literature
Distribution Center, One Technology Way, Norwood, MA 02062, or fax to
781-461-3700
Figure 1. Received Signal Strength Indicator (RSSI) block diagram shows
phase detection circuits This diagram can be seen in the AD8309 press release
at analog.com
A slide is available by calling the below contact./
/CONTACT: Cheryl O'Connor of Analog Devices, 781-937-1154, fax,
781-937-1026, or cheryl.oconnor@analog.com/
/Company News On-Call: prnewswire.com or
fax, 800-758-5804, ext. 054550/
/Web site: analog.com
analog.com
(ADI) |
