Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsMAX2015EUA+

General Description

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.

Applications

AGC Measurement and Control

RF Transmitter Power Measurement

RSSI Measurements

Cellular Base Station, WLAN, Microwave Link,

Radar, and other Military Applications

Features

♦ 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

Variations

♦ Controller Mode with Error Output

♦ Shutdown Mode with Typically 1µA of Supply

Current

♦ Available in 8-Pin µMAX

and TDFN Packages

MAX2015

0.1GHz to 3GHz, 75dB Logarithmic

Detector/Controller

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

MAX2015

7dB

50Ω

20kΩ

SET

OUT

INHI

INLO

1, 4

PWDN

20kΩ

7dB

GND

POWER DETECTORS

OFFSET AND COMMON-

MODE AMP

Functional Diagram

19-2998; Rev 2; 2/07

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.

EVALUATION KIT

AVAILABLE

Pin Configuration appears at end of data sheet.

PART

TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX2015EUA

-40°C to +85°C

8 µMAX

U8-1

MAX2015EUA-T

-40°C to +85°C

8 µMAX

U8-1

*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.

Summary of content (13 pages)

PAGE 1
9-2998; Rev 2; 2/07 KIT ATION EVALU LE B A IL A AV 0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller Features ♦ Complete RF Detector/Controller 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.
PAGE 2
MAX2015 0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller ABSOLUTE MAXIMUM RATINGS VCC (Pins, 1, 4) to GND.......................................-0.3V to +5.25V SET, PWDN to GND....................................-0.3V to (VCC + 0.3V) Input Power Differential INHI, INLO................................+23dBm Input Power Single Ended (INHI or INLO grounded).....+19dBm Continuous Power Dissipation (TA = +70°C) 8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW 8-Pin TDFN (derate 18.
PAGE 3
0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller (MAX2015 typical application circuit (Figure 1), VS = +3.3V, fRF = 100MHz to 3000MHz, R1 = 0Ω, R4 = 0Ω, RL = 10kΩ, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL RF Input Frequency Range fRF Return Loss S11 Large-Signal Response Time CONDITIONS PIN = no signal to 0dBm, ±0.5dB settling accuracy MIN TYP MAX UNITS 0.
PAGE 4
MAX2015 0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller AC ELECTRICAL CHARACTERISTICS (continued) (MAX2015 typical application circuit (Figure 1), VS = +3.3V, fRF = 100MHz to 3000MHz, R1 = 0Ω, R4 = 0Ω, RL = 10kΩ, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Intercept (Note 5) -83 dBm Typical Intercept Variation TA = -40°C to +85°C 0.
PAGE 5
0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller fIN = 0.1GHz 1.8 2 3 MAX2015 toc02 3 MAX2015 toc01 2.0 fIN = 0.1GHz NORMALIZED TO DATA AT +25°C fIN = 0.1GHz, TA = +85°C NORMALIZED TO DATA AT +25°C 2 1.6 TA = +85°C 1.2 TA = +85°C 1.0 0 VCC = 3.6V 1 ERROR (dB) 1 1.4 ERROR (dB) OUTPUT VOLTAGE (V) OUTPUT-VOLTAGE ERROR vs. INPUT POWER OUTPUT-VOLTAGE ERROR vs. INPUT POWER MAX2015 toc03 OUTPUT VOLTAGE vs. INPUT POWER TA = +25°C 0 VCC = 2.7V VCC = 3.0V VCC = 3.3V -1 -1 0.
PAGE 6
Typical Operating Characteristics (continued) (MAX2015 typical application circuit (Figure 1), VS = VCC = 3.3V, PIN = -10dBm, fIN = 100MHz, R1 = 0Ω, R4 = 0Ω, RL = 10kΩ, VPWDN = 0V, TA = +25°C, unless otherwise noted.) OUTPUT-VOLTAGE ERROR vs. INPUT POWER 1 ERROR (dB) TA = +25°C -1 TA = -40°C VCC = 2.7V VCC = 3.6V 1 0 VCC = 2.7V -1 -1 VCC = 3.0V -2 -3 -40 -30 -20 -10 0 10 -3 -60 -50 -40 -20 -10 0 10 -60 -50 -40 -10 0 INPUT POWER (dBm) OUTPUT VOLTAGE vs.
PAGE 7
0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller 1.0 MAGNITUDE (dB) 1.5 -12.5 RFIN (AC-COUPLED) 0.5 0 VCC = 2.7V, 3.0V -15.0 -17.5 -20.0 TA = -40°C -12.5 MAGNITUDE (dB) VOUT -10.0 MAX2015 toc20 MAX2015 toc19 RF INPUT VOLTAGE, OUTPUT VOLTAGE (V) fIN = 100MHz 2.0 S11 MAGNITUDE S11 MAGNITUDE -10.0 MAX2015 toc21 RF PULSE RESPONSE 2.5 -15.0 -17.5 TA = +85°C -20.0 TA = +25°C -0.5 -22.5 -1.0 -25.0 VCC = 3.3V, 3.6V -25.0 0 TIME (50ns/div) -22.5 0.5 1.0 1.5 2.0 2.5 3.
PAGE 8
MAX2015 0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller Detailed Description Applications Information The MAX2015 is a successive detection logarithmic amplifier designed for use in RF power measurement and AGC applications with a 0.1GHz to 3GHz frequency range from a single 2.7V to 3.6V power supply. It is pin compatible with other leading logarithmic amplifiers.
PAGE 9
0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller MAX2015 POWER AMPLIFIER VS R4 TRANSMITTER 1 C6 COUPLER VCC GAIN-CONTROL INPUT C5 DETECTORS C1 RFIN C2 2 3 4 C4 INHI INLO VCC OUT 8 20kΩ VOUT OUT SET 7 VSET SET-POINT DAC 20kΩ GND MAX2015 PWDN 6 LOGARITHMIC DETECTOR IN SET 20kΩ 5 20kΩ C3 MAX2015 Figure 2. Controller-Mode Typical Application Circuit Figure 3. System Diagram for Automatic Gain-Control Loop detected signal with a reference voltage determined by VSET.
PAGE 10
MAX2015 0.
PAGE 11
0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller 8 INCHES DIM A A1 A2 b E Ø0.50±0.1 H c D e E H 0.6±0.1 L 1 1 α 0.6±0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.014 0.010 0.007 0.005 0.120 0.116 0.0256 BSC 0.120 0.116 0.198 0.188 0.026 0.016 6° 0° 0.0207 BSC 8LUMAXD.EPS 4X S 8 MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 4.78 5.03 0.41 0.66 0° 6° 0.
PAGE 12
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 6, 8, &10L, DFN THIN.EPS MAX2015 0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller PACKAGE OUTLINE, 6,8,10 & 14L, TDFN, EXPOSED PAD, 3x3x0.
PAGE 13
0.1GHz to 3GHz, 75dB Logarithmic Detector/Controller PACKAGE VARIATIONS COMMON DIMENSIONS SYMBOL MIN. MAX. PKG. CODE N D2 E2 e JEDEC SPEC b A 0.70 0.80 T633-1 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF D 2.90 3.10 T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF [(N/2)-1] x e E 2.90 3.10 T833-1 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF A1 0.00 0.05 T833-2 8 1.50±0.10 2.30±0.10 0.