MAXIM MAX2014 Technical data

General Description

The MAX2014 complete multistage logarithmic amplifier is
designed to accurately convert radio-frequency (RF) sig­nal 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 received­signal-strength indication (RSSI) for terminal devices.

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.

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
Optical Networks

Features

♦ 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

♦ Controller Mode with Error Output

♦ Shutdown Mode with Typically 1µA of Supply

Current

♦ Available in 8-Pin TDFN Package

MAX2014

50MHz to 1000MHz, 75dB Logarithmic

Detector/Controller

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

MAX2014

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

19-0583; Rev 0; 6/06

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.

Pin Configuration appears at end of data sheet.

PART

PIN­PACKAGE

PKG

CODE

MAX2014ETA-T

8 TDFN-EP*

T833-2

MAX2014ETA+T

8 TDFN-EP*

T833-2

*See the Power-Supply Connections section.

+Denotes lead-free package.

T = Tape-and-reel package.
*EP = Exposed paddle.

TEMP RANGE

-40°C to +85°C

-40°C to +85°C

(3mm x 3mm)

(3mm x 3mm)

MAX2014

50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(MAX2014 Typical Application Circuit (Figure 1), VS= +3.3V, fRF= 50MHz to 1000MHz, 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 TDFN (derate 18.5mW/°C above +70°C) .........1480mW

θ

JA

(without airflow)..........................................................54°C/W

θ

JC

(junction to exposed paddle) ...................................8.3°C/W

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

AC ELECTRICAL CHARACTERISTICS

(MAX2014 Typical Application Circuit (Figure 1), VS= +3.3V, fRF= 50MHz to 1000MHz, 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

MHz

Return Loss S

11

-15 dB

Large-Signal Response Time

P

IN

= no signal to 0dBm,

±0.5dB settling accuracy

150 ns

RSSI MODE—50MHz

RF Input Power Range (Note 2)

dBm

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

Range Center -30 dBm

Supply Current Variation with Temp

0.5 to 1.8

V

OUT(MIN

V

OUT(MAX

SYMBOL

50 to 1000

-65 to +5

MAX2014

50MHz to 1000MHz, 75dB Logarithmic

Detector/Controller

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2014 Typical Application Circuit (Figure 1), VS= +3.3V, fRF= 50MHz to 1000MHz, 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

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—100MHz

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—900MHz

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

Note 1: The MAX2014 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 T

A

= -40°C

and +85°C, relative to the curve at T

A

= +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.

SYMBOL

+0.0083

-0.0154

-65 to +5

+0.0083

-0.0154

-65 to +5

±0.0083

-0.0154

MAX2014

50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller

4 _______________________________________________________________________________________

OUTPUT VOLTAGE vs. INPUT POWER

MAX2014 toc01

INPUT POWER (dBm)

OUTPUT VOLTAGE (V)

-10-20-70 -60 -50 -40 -30

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

0.4

-80 0

fIN = 50MHz

TA = +85°C

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc02

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

fIN = 50MHz
NORMALIZED TO DATA AT +25°C

TA = +85°C

TA = -20°C

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc03

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 3.3V

fIN = 50MHz, TA = +85°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V

VCC = 3.0V

VCC = 3.6V

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc04

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 2.7V

fIN = 50MHz, TA = -40°C
NORMALIZED TO DATA AT +25°C

VCC = 3.0V

VCC = 3.3V

VCC = 3.6V

OUTPUT VOLTAGE vs. INPUT POWER

INPUT POWER (dBm)

OUTPUT VOLTAGE (V)

MAX2014 toc05

-80 -70 -60 -50 -40 -30 -20 -10 0

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

TA = +85°C

fIN = 100MHz

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc06

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

TA = +85°C

fIN = 100MHz
NORMALIZED TO DATA AT +25°C

TA = -20°C

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc07

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 3.3V

fIN = 100MHz, TA = +85°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V

VCC = 3.0V

VCC = 3.6V

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc08

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

fIN = 100MHz, TA = -40°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V, 3.0V

VCC = 3.3V

VCC = 3.6V

Typical Operating Characteristics

(MAX2014 Typical Application Circuit (Figure 1), VS= VCC= 3.3V, PIN= -10dBm, fIN= 100MHz, R1 = 0Ω, R4 = 0Ω, RL= 10kΩ,
V

PWDN

= 0V, TA= +25°C, unless otherwise noted.)

MAX2014

50MHz to 1000MHz, 75dB Logarithmic

Detector/Controller

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(MAX2014 Typical Application Circuit (Figure 1), VS= VCC= 3.3V, PIN= -10dBm, fIN= 100MHz, R1 = 0Ω, R4 = 0Ω, RL= 10kΩ,
V

PWDN

= 0V, TA= +25°C, unless otherwise noted.)

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc10

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

TA = +85°C

fIN = 450MHz
NORMALIZED TO DATA AT +25°C

TA = -20°C

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc11

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 3.3V

fIN = 450MHz, TA = +85°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V

VCC = 3.0V

VCC = 3.6V

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc12

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 2.7V

fIN = 450MHz, TA = -40°C
NORMALIZED TO DATA AT +25°C

VCC = 3.0V

VCC = 3.3V

VCC = 3.6V

OUTPUT VOLTAGE vs. INPUT POWER

INPUT POWER (dBm)

OUTPUT VOLTAGE (V)

MAX2014 toc13

-80 -70 -60 -50 -40 -30 -20 -10 0

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

TA = +85°C

fIN = 900MHz

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc14

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

TA = +85°C

fIN = 900MHz
NORMALIZED TO DATA AT +25°C

TA = -20°C

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc15

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 3.3V

fIN = 900MHz, TA = +85°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V

VCC = 3.0V

VCC = 3.6V

OUTPUT VOLTAGE vs. INPUT POWER

INPUT POWER (dBm)

OUTPUT VOLTAGE (V)

MAX2014 toc09

-80 -70 -60 -50 -40 -30 -20 -10 0

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

TA = +85°C

fIN = 450MHz

TA = -40°C

MAX2014

50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(MAX2014 Typical Application Circuit (Figure 1), VS= VCC= 3.3V, PIN= -10dBm, fIN= 100MHz, R1 = 0Ω, R4 = 0Ω, RL= 10kΩ,
V

PWDN

= 0V, TA= +25°C, unless otherwise noted.)

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc18

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

TA = +85°C

fIN = 1GHz
NORMALIZED TO DATA AT +25°C

TA = -20°C

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc16

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 3.3V

fIN = 900MHz, TA = -40°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V

VCC = 3.0V

VCC = 3.6V

OUTPUT VOLTAGE vs. INPUT POWER

INPUT POWER (dBm)

OUTPUT VOLTAGE (V)

MAX2014 toc17

-80 -70 -60 -50 -40 -30 -20 -10 0

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

TA = +85°C

fIN = 1GHz

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc19

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 3.3V

fIN = 1GHz, TA = +85°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V

VCC = 3.0V

VCC = 3.6V

OUTPUT VOLTAGE vs. FREQUENCY

FREQUENCY INPUT (MHz)

OUTPUT VOLTAGE (V)

MAX2014 toc22

0 200 400 600 800 1000

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

PIN = -60dBm

PIN = -10dBm

PIN = -30dBm

PIN = -45dBm

TA = +25°C, +85°C

TA = -40°C

TA = +85°C

TA = +25°C

TA = -40°C

OUTPUT VOLTAGE ERROR vs. INPUT POWER

INPUT POWER (dBm)

ERROR (dB)

MAX2014 toc20

-80 -70 -60 -50 -40 -30 -20 -10 0

-3

-2

-1

0

1

2

3

VCC = 3.3V

fIN = 1GHz, TA = -40°C
NORMALIZED TO DATA AT +25°C

VCC = 2.7V

VCC = 3.0V

VCC = 3.6V

OUTPUT VOLTAGE vs. FREQUENCY

FREQUENCY INPUT (MHz)

OUTPUT VOLTAGE (V)

MAX2014 toc21

0 200 400 600 800 1000

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

PIN = +5dBm

PIN = -5dBm

PIN = -15dBm

PIN = -25dBm

PIN = -35dBm

PIN = -45dBm

PIN = -55dBm

PIN = -65dBm

MAX2014

50MHz to 1000MHz, 75dB Logarithmic

Detector/Controller

_______________________________________________________________________________________ 7

Pin Description

PIN NAME DESCRIPTION

1, 4 V

CC

Supply Voltage. Bypass with capacitors as specified in the typical application circuits. Place capacitors
as close to the pin as possible (see the Power-Supply Connections section).

2, 3

Differential RF Inputs

5 PWDN

Power-Down Input. Drive PWDN with a logic-high to power down the IC. PWDN must be connected to
GND for V

S

between 4.75V and 5.25V with R4 = 75Ω.

6 GND Ground. Connect to the printed circuit (PC) board ground plane.

7 SET

Set-Point Input. To operate in detector mode, connect SET to OUT. To operate in controller mode,
connect a precision voltage source to control the power level of a power amplifier.

8 OUT

Detector Output. In detector mode, this output provides a voltage proportional to the log of the input
power. In controller mode, this output is connected to a power-control input on a power amplifier (PA).

— EP Exposed Paddle. Connect EP to GND using multiple vias, or the EP can also be left unconnected.

Typical Operating Characteristics (continued)

(MAX2014 Typical Application Circuit (Figure 1), VS= VCC= 3.3V, PIN= -10dBm, fIN= 100MHz, R1 = 0Ω, R4 = 0Ω, RL= 10kΩ,
V

PWDN

= 0V, TA= +25°C, unless otherwise noted.)

OUTPUT VOLTAGE vs. FREQUENCY

2.0

1.8

1.6
PIN = -10dBm

1.4

1.2

PIN = -30dBm

1.0
PIN = -45dBm

OUTPUT VOLTAGE (V)

0.8

PIN = -60dBm

0.6

0.4

0 200 400 600 800 1000

FREQUENCY INPUT (MHz)

VCC = 3.6V

VCC = 2.7V

VCC = 2.7V, 3.3V, 3.6V

MAX2014 toc23

2.5

RF PULSE RESPONSE

f

100MHz

IN =

2.0

1.5

1.0

0.5

0

-0.5

RF INPUT VOLTAGE, OUTPUT VOLTAGE (V)

-1.0

V

OUT

RFIN
(AC-COUPLED)

TIME (50ns/div)

MAX2014 toc24

-10.0

S11 MAGNITUDE

-12.5

-15.0

-17.5

MAGNITUDE (dB)

-20.0

-22.5

-25.0

VCC = 2.7V, 3.0V, 3.3V, 3.6V

0 200 400 600 800 1000

FREQUENCY (MHz)

MAX2014 toc25

-10.0

-12.5

-15.0

-17.5

MAGNITUDE (dB)

-20.0

-22.5

-25.0
0 200 400 600 800 1000

S11 MAGNITUDE

TA = -20°C

TA = +85°C

FREQUENCY (MHz)

INHI, INLO

MAX2014 toc26

TA = -40°C

TA = +25°C

MAX2014

50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller

8 _______________________________________________________________________________________

Detailed Description

The MAX2014 is a successive detection logarithmic
amplifier designed for use in RF power measurement
and AGC applications with a 50MHz to 1000MHz
frequency range from a single 2.7V to 3.6V power
supply. It is pin compatible with other leading logarith­mic amplifiers.

The MAX2014 provides for improved performance with
a high 75dB dynamic range at 100MHz, and exception­al accuracy over the extended temperature range and
supply voltage range.

RF Input

The MAX2014 differential RF input (INHI, INLO) allows
for broadband signals between 50MHz and 1000MHz.
For single-ended signals, AC-couple INLO to ground.
The RF inputs are internally biased and need to be AC­coupled using 680pF capacitors as shown in Figures 1
and 2. An internal 50Ω resistor between INHI and INLO
provides a good 50MHz to 1000MHz match.

SET Input

The SET input is used for loop control when in controller
mode or to set the slope of the output signal (mV/dB)
when in detector mode. The internal input structure of
SET is two series 20kΩ resistors connected to ground.
The center node of the resistors is fed to the negative
input of the internal output op amp.

Power-Supply Connections

The MAX2014 requires power-supply bypass capacitors
connected close to each VCCpin. At each VCCpin,
connect a 0.1µF capacitor (C4, C6) and a 100pF capac­itor (C3, C5), with the 100pF capacitor being closest to
the pin.

For power-supply voltages (VS) between 2.7V and 3.6V,
set R4 = 0Ω (see the typical application circuits, Figures
1 and 2 ).

For power-supply voltages (VS) between 4.75V and

5.25V, set R4 = 75Ω ±1% (100ppm/°C max) and PWDN
must be connected to GND.

Power-Down Mode

The MAX2014 can be powered down by driving PWDN
with logic-high (logic-high = VCC). In power-down
mode, the supply current is reduced to a typical value
of 1µA. For normal operation, drive PWDN with a logic­low. It is recommended when using power-down that
an RF signal not be applied before the power-down
signal is low.

Applications Information

Detector (RSSI) Mode

In detector mode, the MAX2014 acts like an RSSI,
which provides an output voltage proportional to the
input power. This is accomplished by providing a feed­back path from OUT to SET (R1 = 0Ω; see Figure 1).

By connecting SET directly to OUT, the op amp gain is
set to 2V/V due to two internal 20kΩ feedback resistors.
This provides a detector slope of approximately
18mV/dB with a 0.5V to 1.8V output range.

MAX2014

C6

C1

C5

1

2

OUT

SET

C4 C3

4

V

CC

V

CC

INLO

OUT

20kΩ

20kΩ

INHI

7

8

RFIN

C2

3

DETECTORS

R1

GND

6

PWDN

5

R4

V

S

Figure 1. Detector-Mode (RSSI) Typical Application Circuit

Table 1. Suggested Components of
Typical Applications Circuits

DESIGNATION

VALUE TYPE

C1, C2 680pF 0603 ceramic capacitors

C3, C5 100pF 0603 ceramic capacitors

C4, C6 0.1µF 0603 ceramic capacitors

R1* 0Ω 0603 resistor

R4** 0Ω 0603 resistor

*RSSI mode only.
**V

S

= 2.7V to 3.6V.

MAX2014

50MHz to 1000MHz, 75dB Logarithmic

Detector/Controller

_______________________________________________________________________________________ 9

Controller Mode

The MAX2014 can also be used as a detector/controller
within an AGC loop. Figure 3 depicts one scenario
where the MAX2014 is employed as the controller for a
variable-gain PA. As shown in the figure, the MAX2014
monitors the output of the PA through a directional cou­pler. An internal integrator (Figure 2) compares the
detected signal with a reference voltage determined by
V

SET

. The integrator, acting like a comparator, increas­es or decreases the voltage at OUT, according to how
closely the detected signal level matches the V

SET

ref­erence. The MAX2014 adjusts the power of the PA to a
level determined by the voltage applied to SET. With R1 =
0Ω, the controller mode slope is approximately
19mV/dB (RF = 100MHz).

Layout Considerations

As with any RF circuit, the layout of the MAX2014 circuit
affects the device’s performance. Use an abundant num­ber of ground vias to minimize RF coupling. Place the
input capacitors (C1, C2) and the bypass capacitors
(C3–C6) as close to the IC as possible. Connect the
bypass capacitors to the ground plane with multiple vias.

MAX2014

C6

R4

C1

C5

1

2

OUT

SET

V

S

C4 C3

4

V

CC

V

CC

INLO

V

OUT

V

SET

20kΩ

20kΩ

INHI

7

8

RFIN

C2

3

DETECTORS

GND

6

PWDN

5

Figure 2. Controller-Mode Typical Application Circuit

MAX2014

OUT

SET

20kΩ

20kΩ

IN

COUPLER

LOGARITHMIC

DETECTOR

TRANSMITTER

POWER AMPLIFIER

GAIN-CONTROL INPUT

SET-POINT

DAC

Figure 3. System Diagram for Automatic Gain-Control Loop

134

865

MAX2014

2

7

TDFN

TOP VIEW

OUT SET GND PWDN

V

CC INHI INLOVCC

Pin Configuration

Chip Information

PROCESS: BiCMOS

MAX2014

50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller

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.

10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2006 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.

Package Information

(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

H

1

2

21-0137

PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm

COMMON DIMENSIONS

SYMBOL

MIN. MAX.
A 0.70 0.80
D 2.90 3.10
E 2.90 3.10
A1

0.00 0.05

L 0.20 0.40

PKG. CODE N D2 E2 e JEDEC SPEC b [(N/2)-1] x e

PACKAGE VARIATIONS

0.25 MIN.k

A2 0.20 REF.

2.30±0.101.50±0.106T633-1 0.95 BSC MO229 / WEEA 1.90 REF0.40±0.05

1.95 REF0.30±0.050.65 BSC2.30±0.108T833-1

2.00 REF0.25±0.050.50 BSC2.30±0.1010T1033-1

2.40 REF0.20±0.05- - - - 0.40 BSC1.70±0.10 2.30±0.1014T1433-1

1.50±0.10

1.50±0.10

MO229 / WEEC

MO229 / WEED-3

0.40 BSC - - - - 0.20±0.05 2.40 REFT1433-2 14 2.30±0.101.70±0.10

T633-2 6 1.50±0.10 2.30±0.10

0.95 BSC MO229 / WEEA

0.40±0.05 1.90 REF

T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
T833-3 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF

-DRAWING NOT TO SCALE-

H

2

2

21-0137

PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm

2.30±0.10

MO229 / WEED-3

2.00 REF0.25±0.05

0.50 BSC

1.50±0.1010T1033-2