19-0583; Rev 0; 6/06
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
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
♦ Available in 8-Pin TDFN Package
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.
*See the Power-Supply Connections section.
Ordering Information
PIN-
PACKAGE
PKG
CODE
PART
TEMP RANGE
Applications
AGC Measurement and Control
RF Transmitter Power Measurement
RSSI Measurements
8 TDFN-EP*
(3mm x 3mm)
MAX2014ETA-T
-40°C to +85°C
T833-2
T833-2
8 TDFN-EP*
(3mm x 3mm)
MAX2014ETA+T -40°C to +85°C
Cellular Base-Station, WLAN, Microwave Link,
Radar, and other Military Applications
+Denotes lead-free package.
T = Tape-and-reel package.
*EP = Exposed paddle.
Optical Networks
Functional Diagram
V
CC
1, 4
POWER DETECTORS
Σ
Σ
Σ
8
2
3
OUT
INHI
INLO
7
50Ω
7dB
7dB
7dB
SET
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/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.