19-0583; Rev 1; 2/12
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
MAX2014
General Description
Features
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.
♦ 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
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.
♦ Controller Mode with Error Output
♦ Shutdown Mode with Typically 1µA of Supply
Current
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.
♦ Available in 8-Pin TDFN and 8-pin µMAX® Package
Applications
AGC Measurement and Control
RF Transmitter Power Measurement
RSSI Measurements
*See the Power-Supply Connections section.
Cellular Base-Station, WLAN, Microwave Link,
Radar, and other Military Applications
Optical Networks
Ordering Information appears at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Functional Diagram
V
CC
1, 4
POWER DETECTORS
Σ
Σ
Σ
8
7
2
3
OUT
SET
INHI
INLO
50Ω
7dB
7dB
7dB
20kΩ
20kΩ
5
OFFSET AND COMMON-
MODE AMP
PWDN
MAX2014
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.