MAX2015 Maxim, MAX2015 Datasheet

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MAX2015

Manufacturer Part Number
MAX2015
Description
The MAX2015 complete multistage logarithmic amplifier is designed to accurately convert radio-frequency (RF) signal power in the 0
Manufacturer
Maxim
Datasheet

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The MAX2015 complete multistage logarithmic amplifier
is designed to accurately convert radio-frequency (RF)
signal power in the 0.1GHz to 3GHz frequency range to
an equivalent DC voltage. The outstanding dynamic
range and precision over temperature of this log ampli-
fier make it particularly useful for a variety of base sta-
tion and other wireless applications, including
automatic gain control (AGC), transmitter power mea-
surements, and received signal strength indication
(RSSI) for terminal devices.
The MAX2015 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.
19-2998; Rev 2; 2/07
Pin Configuration appears at end of data sheet.
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.
AGC Measurement and Control
RF Transmitter Power Measurement
RSSI Measurements
Cellular Base Station, WLAN, Microwave Link,
Radar, and other Military Applications
PWDN
INLO
INHI
________________________________________________________________ Maxim Integrated Products
2
3
5
General Description
50Ω
0.1GHz to 3GHz, 75dB Logarithmic
POWER DETECTORS
Σ
Applications
7dB
MAX2015
Σ
7dB
GND
V
CC
1, 4
6
♦ Complete RF Detector/Controller
♦ 0.1GHz to 3GHz Frequency Range
♦ Exceptional Accuracy Over Temperature
♦ High Dynamic Range
♦ 2.7V to 5.25V Supply Voltage Range*
♦ Scaling Stable Over Supply and Temperature
♦ Controller Mode with Error Output
♦ Shutdown Mode with Typically 1µA of Supply
♦ Available in 8-Pin µMAX
*See Power-Supply Connections section.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
T = Tape-and-reel.
+Denotes lead-free and RoHS compliance.
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
MAX2015EUA
MAX2015EUA-T
Σ
Variations
Current
OFFSET AND COMMON-
7dB
PART
MODE AMP
Detector/Controller
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
Functional Diagram
20kΩ
20kΩ
®
and TDFN Packages
8
7
PACKAGE
OUT
SET
8 µMAX
8 µMAX
PIN-
Features
CODE
PKG
U8-1
U8-1
1

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MAX2015 Summary of contents

Page 1

... The MAX2015 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. ...

Page 2

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (MAX2015 typical application circuit (Figure 1), V +85°C, unless otherwise noted. Typical values are at T PARAMETER ...

Page 3

... Logarithmic AC ELECTRICAL CHARACTERISTICS (MAX2015 typical application circuit (Figure 1), V +85°C, unless otherwise noted. Typical values are at T PARAMETER RF Input Frequency Range Return Loss Large-Signal Response Time RSSI MODE—0.1GHz RF Input Power Range ±3dB Dynamic Range Range Center Temp Sensitivity when T > ...

Page 4

... Intercept Typical Intercept Variation Note 1: The MAX2015 is guaranteed by design for T Note 2: Typical minimum and maximum range of the detector at the stated frequency. Note 3: Dynamic range refers to the range over which the error remains within the stated bounds. The error is calculated at -40°C and +85° ...

Page 5

... Logarithmic (MAX2015 typical application circuit (Figure 1 +25°C, unless otherwise noted.) OUTPUT VOLTAGE vs. INPUT POWER 2 0.1GHz IN 1.8 1.6 1.4 1 +85°C A 1.0 0 +25° -40°C A 0.4 -70 -60 -50 -40 -30 -20 -10 0 INPUT POWER (dBm) OUTPUT-VOLTAGE ERROR vs. INPUT POWER 0.1GHz -40°C ...

Page 6

... Logarithmic Detector/Controller (MAX2015 typical application circuit (Figure 1 +25°C, unless otherwise noted.) OUTPUT-VOLTAGE ERROR vs. INPUT POWER 1.9GHz IN NORMALIZED TO DATA AT +25° +85° +25° -40° -60 -50 -40 -30 -20 - INPUT POWER (dBm) OUTPUT VOLTAGE vs ...

Page 7

... Logarithmic (MAX2015 typical application circuit (Figure 1 +25°C, unless otherwise noted.) RF PULSE RESPONSE 2 100MHz IN V OUT 2.0 1.5 RFIN 1.0 (AC-COUPLED) 0.5 0 -0.5 -1.0 TIME (50ns/div) PIN NAME Supply Voltage. Bypass with capacitors as specified in the application drawing. Place capacitors close to the pin as possible (see the Power-Supply Connections section). ...

Page 8

... RF Input The MAX2015 can also be used as a detector/controller within an AGC loop. Figure 3 depicts one scenario where the MAX2015 is employed as the controller for a variable-gain PA. As shown in the figure, the MAX2015 monitors the output of the PA through a directional cou- pler. An internal integrator (Figure 2) compares the ...

Page 9

... GND 5 PWDN Figure 3. System Diagram for Automatic Gain-Control Loop As with any RF circuit, the layout of the MAX2015 circuit affects the device’s performance. Use an abundant num- ref- ber of ground vias to minimize RF coupling. Place the SET input capacitors (C1, C2) and the bypass capacitors (C3– ...

Page 10

... TDFN-EP* MAX2015ETA-T -40°C to +85°C (3mm x 3mm) 8 TDFN-EP* MAX2015ETA+ -40°C to +85°C (3mm x 3mm) 8 TDFN-EP* MAX2015ETA+T -40°C to +85°C (3mm x 3mm Tape-and-reel. +Denotes lead-free and RoHS compliance. *EP = Exposed paddle. 10 ______________________________________________________________________________________ PIN- PKG TOP VIEW PACKAGE CODE 8 µ ...

Page 11

... Logarithmic (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages Ø0.50±0.1 0.6±0.1 1 0.6±0.1 D TOP VIEW FRONT VIEW ______________________________________________________________________________________ BOTTOM VIEW ...

Page 12

... Logarithmic Detector/Controller (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE, 6,8,10 & 14L, TDFN, EXPOSED PAD, 3x3x0.80 mm 21-0137 ...

Page 13

... Revision History Pages changed at Rev 2: 1–10, 12, 13 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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