MAXIM MAX2015 Technical data

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 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 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 mea­surement 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

Σ

50Ω

20kΩ

SET

OUT

8

7

2

INHI

INLO

3

6

1, 4

PWDN

5

20kΩ

Σ

7dB

Σ

7dB

V

CC

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-

PKG

CODE

MAX2015EUA

8 µMAX

U8-1

MAX2015EUA-T

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.

PACKAGE

-40°C to +85°C

-40°C to +85°C

MAX2015

0.1GHz to 3GHz, 75dB Logarithmic
Detector/Controller

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(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 T

A

= +25°C, unless otherwise noted.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VCC(Pins, 1, 4) to GND.......................................-0.3V to +5.25V

SET, PWDN to GND....................................-0.3V to (V

CC

+ 0.3V)

Input Power Differential INHI, INLO................................+23dBm

Input Power Single Ended (INHI or INLO grounded).....+19dBm

Continuous Power Dissipation (T

A

= +70°C)

8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW

8-Pin TDFN (derate 18.5mW/°C above +70°C) .........1480mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS MIN TYP MAX UNITS

POWER SUPPLY

R4 = 75Ω ±1%, PWDN must be
connected to GND

4.75 5.25

Supply Voltage V

S

R4 = 0Ω 2.7 3.6

V

TA = +25°C, VS = 5.25V,
R4 = 75Ω

17.3

Supply Current I

CC

TA = +25°C 17.3 20.5

mA

I

CC

TA = -40°C to +85°C 0.05 mA/°C

Shutdown Current I

CC

V

PWDN

= V

CC

1µA

CONTROLLER REFERENCE (SET)

SET Input Voltage Range

V

SET Input Impedance 40 kΩ

DETECTOR OUTPUT (OUT)

Source Current 4mA

Sink Current 450 µA

Minimum Output Voltage

)

0.5 V

Maximum Output Voltage

)

1.8 V

Supply Current Variation with Temp

0.5 to 1.8

V

OUT(MIN

V

OUT(MAX

MAX2015

0.1GHz to 3GHz, 75dB Logarithmic
Detector/Controller

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS

(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 T

A

= +25°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS MIN TYP MAX

UNITS

RF Input Frequency Range f

RF

GHz

Return Loss S

11

-15 dB

Large-Signal Response Time

P

IN

= no signal to 0dBm,

±0.5dB settling accuracy

150 ns

RSSI MODE—0.1GHz

RF Input Power Range (Note 2)

dBm

±3dB Dynamic Range TA = -40°C to +85°C (Note 3) 70 dB

Range Center -30 dBm

Temp Sensitivity when TA > +25°C

T

A

= +25°C to +85°C,

P

IN

= -25dBm

dB/°C

Temp Sensitivity when TA < +25°C

T

A

= -40°C to +25°C,

P

IN

= -25dBm

dB/°C

Slope (Note 4) 19

mV/dB

Typical Slope Variation TA = -40°C to +85°C -4

µV/°C

Intercept (Note 5) -100 dBm

Typical Intercept Variation TA = -40°C to +85°C 0.03

dBm/°C

RSSI MODE—0.9GHz

RF Input Power Range (Note 2)

dBm

±3dB Dynamic Range TA = -40°C to +85°C (Note 3) 70 dB

Range Center -30 dBm

Temp Sensitivity when TA > +25°C

T

A

= +25°C to +85°C,

P

IN

= -25dBm

dB/°C

Temp Sensitivity when TA < +25°C

T

A

= -40°C to +25°C,

P

IN

= -25dBm

dB/°C

Slope (Note 4) 18.1

mV/dB

Typical Slope Variation TA = -40°C to +85°C -4

µV/°C

Intercept (Note 5) -97 dBm

Typical Intercept Variation TA = -40°C to +85°C 0.02

dBm/°C

RSSI MODE—1.9GHz

RF Input Power Range (Note 2)

dBm

±3dB Dynamic Range TA = -40°C to +85°C (Note 3) 60 dB

Range Center -25 dBm

Temp Sensitivity when TA > +25°C

T

A

= +25°C to +85°C,

P

IN

= -25dBm

dB/°C

Temp Sensitivity when TA < +25°C

T

A

= -40°C to +25°C,

P

IN

= -25dBm

dB/°C

Slope (Note 4) 18

mV/dB

Typical Slope Variation TA = -40°C to +85°C -4.8

µV/°C

SYMBOL

0.1 to 3

-65 to +5

+0.0083

-0.0154

-65 to +5

±0.0083

-0.0154

-55 to +5

±0.0033

-0.0138

MAX2015

0.1GHz to 3GHz, 75dB Logarithmic
Detector/Controller

4 _______________________________________________________________________________________

PARAMETER

SYMBOL

CONDITIONS MIN TYP MAX

UNITS

Intercept (Note 5) -83 dBm

Typical Intercept Variation TA = -40°C to +85°C 0.03

dBm/°C

RSSI MODE—2.5GHz

RF Input Power Range (Note 2)

dBm

±3dB Dynamic Range TA = -40°C to +85°C (Note 3) 40 dB

Range Center -25 dBm

Temp Sensitivity when TA > +25°C

T

A

= +25°C to +85°C,

P

IN

= -25dBm

dB/°C

Temp Sensitivity when TA < +25°C

T

A

= -40°C to +25°C,

P

IN

= -25dBm

dB/°C

Slope (Note 4) 16.8

mV/dB

Typical Slope Variation TA = -40°C to +85°C -8

µV/°C

Intercept (Note 5) -81 dBm

Typical Intercept Variation TA = -40°C to +85°C 0.03

dBm/°C

Note 1: The MAX2015 is guaranteed by design for TA= -40°C to +85°C, as specified.
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°C, relative to the curve at +25°C.

Note 4: The slope is the variation of the output voltage per change in input power. It is calculated by fitting a root-mean-square

(RMS) straight line to the data indicated by RF input power range.

Note 5: The intercept is an extrapolated value that corresponds to the output power for which the output voltage is zero.

It is calculated by fitting an RMS straight line to the data.

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 T

A

= +25°C, unless otherwise noted.) (Note 1)

-45 to -5

-0.0083

-0.0083