MAX2014_V1 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 50MHz to 1000MHz, 75dB Logarithmic Detector/Controller

19-0583; Rev 1; 2/12
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
General Description
The MAX2014 complete multistage logarithmic amplifier is
designed to accurately convert radio-frequency (RF) sig-
nal power in the 50MHz to 1000MHz frequency range to
an equivalent DC voltage. The outstanding dynamic range
and precision over temperature of this log amplifier make it
particularly useful for a variety of base-station and other
wireless applications, including automatic gain control
(AGC), transmitter power measurements, and received-
signal-strength indication (RSSI) for terminal devices.
The MAX2014 can also be operated in a controller
mode where it measures, compares, and controls the
output power of a variable-gain amplifier as part of a
fully integrated AGC loop.
This logarithmic amplifier provides much wider mea-
surement range and superior accuracy compared to
controllers based on diode detectors, while achieving
excellent temperature stability over the full -40°C to
+85°C operating range.
Features
♦ Complete RF Detector/Controller
♦ 50MHz to 1000MHz Frequency Range
♦ Exceptional Accuracy Over Temperature
♦ High Dynamic Range
♦ 2.7V to 5.25V Supply Voltage Range*
♦ Scaling Stable Over Supply and Temperature
Variations
♦ Controller Mode with Error Output
♦ Shutdown Mode with Typically 1µA of Supply
Current
♦ Available in 8-Pin TDFN and 8-pin µMAX^® Package
Applications
AGC Measurement and Control
RF Transmitter Power Measurement
RSSI Measurements
Cellular Base-Station, WLAN, Microwave Link,
Radar, and other Military Applications
Optical Networks
µMAX is a registered trademark of Maxim Integrated Products, Inc.
*See the Power-Supply Connections section.
Ordering Information appears at end of data sheet.
Functional Diagram
V_CC
1, 4
2
INHI
3
INLO
POWER DETECTORS
Σ
Σ
50Ω
7dB
7dB
Σ
7dB
8
OUT
7
SET
20kΩ
5
PWDN
MAX2014
OFFSET AND COMMON-
MODE AMP
20kΩ
6
GND
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.