The
MAX2015 is the industry’s first RF log amplifier
to fully cover the 0.1- to 2.5-GHz band with exceptional
dynamic range and ± 1-dB precision over temperature.
The device can be configured as a simple RF power detector
or as a complete closed-loop controller. The outstanding
combination of precision and dynamic range makes this
log amplifier particularly useful in a variety of base
station and other wireless applications including automatic
gain control (AGC), transmitter power measurements,
and received-signal-strength indication (RSSI) circuitry.
While
maintaining ± 3-dB log conformance at 25°C, the device
provides dynamic ranges of 75, 65, and 45 dB for 900,
1900, and 2500 MHz, respectively. However, the key to
the MAX2015’s success is its superior precision over
temperature and supply. At 900 MHz, this device delivers
55 dB of dynamic range with ± 1 dB of precision over
the –40° to 85°C temperature range. Measurements at
190 and 2500 MHz are equally impressive with dynamic
ranges of 46 and 38 dB under the same precision and
temperature constraints. Offering ± 0.25 dB precision
over VCC ± 15%, it is also virtually unaffected
by voltage-supply variations. These precision levels
significantly enhance the accuracy of an RF power measurement.
The
MAX2015 is available in a space-saving, eight-pin microMAX
package, making it ideal as a drop-in replacement for
the AD8313 log amp. Prices start at $6.35 in
1000-piece quantities.
Maxim
Integrated Products
(408) 737-7600
www.maxim-ic.com
