MAX2014ETA+ [MAXIM]
50MHz to 1000MHz, 75dB Logarithmic Detector/Controller; 50MHz至1000MHz ， 75分贝对数检测器/控制器
| 型号： | MAX2014ETA+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 50MHz to 1000MHz, 75dB Logarithmic Detector/Controller |
| 文件： | 总12页 (文件大小：304K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0583; Rev 1; 2/12
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
MAX2014
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
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.
♦ Available in 8-Pin TDFN and 8-pin µMAX® Package
Applications
AGC Measurement and Control
RF Transmitter Power Measurement
RSSI Measurements
*See the Power-Supply Connections section.
Cellular Base-Station, WLAN, Microwave Link,
Radar, and other Military Applications
Optical Networks
Ordering Information appears at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Functional Diagram
V
CC
1, 4
POWER DETECTORS
Σ
Σ
Σ
8
7
2
3
OUT
SET
INHI
INLO
50Ω
7dB
7dB
7dB
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 Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
ABSOLUTE MAXIMUM RATINGS
CC
SET, PWDN to GND....................................-0.3V to (V
Input Power Differential INHI, INLO................................+23dBm
Input Power Single Ended (INHI or INLO grounded).....+19dBm
Continuous Power Dissipation (T = +70°C)
A
V
(Pins 1, 4) to GND........................................-0.3V to +5.25V
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
Soldering Temperature (reflow) .......................................+260°C
+ 0.3V)
CC
TDFN (derate 18.5mW/°C above +70°C)....................1480mW
µMAX (derate 4.5mW/°C above +70°C) .......................362mW
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.
MAX2014
PACKAGE THERMAL CHARACTERISTICS (Note 1)
TDFN:
Junction-to-Ambient Thermal Resistance (θ ) ............54°C/W
µMAX:
Junction-to-Ambient Thermal Resistance (θ ) ..........221°C/W
JA
JA
Junction-to-Case Thermal Resistance (θ )...................8°C/W
Junction-to-Case Thermal Resistance (θ ).................42°C/W
JC
JC
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7. For detailed
information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
DC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit (Figure 1), V = +3.3V, f = 50MHz to 1000MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, T = -40°C to +85°C,
S
RF
L
A
unless otherwise noted. Typical values are at T = +25°C, unless otherwise noted.) (Note 2)
A
PARAMETER
POWER SUPPLY
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
R4 = 75Ω 1ꢀ, PWDN must be
connected to GND
4.75
2.7
5.25
3.6
Supply Voltage
Supply Current
V
S
R4 = 0Ω
T
= +25°C, V = 5.25V,
S
R4 = 75Ω
A
17.3
I
mA
CC
T
T
= +25°C
17.3
0.05
1
20.5
A
A
Supply Current Variation with Temp
Shutdown Current
I
I
= -40°C to +85°C
mA/°C
µA
CC
CC
V
= V
CC
PWDN
CONTROLLER REFERENCE (SET)
SET Input Voltage Range
SET Input Impedance
0.5 to 1.8
40
V
kΩ
DETECTOR OUTPUT (OUT)
Source Current
4
mA
µA
V
Sink Current
450
0.5
1.8
Minimum Output Voltage
Maximum Output Voltage
V
OUT(MIN)
V
V
OUT(MAX)
2
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
MAX2014
AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit (Figure 1), V = +3.3V, f = 50MHz to 1000MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, T = -40°C to +85°C,
S
RF
L
A
unless otherwise noted. Typical values are at T = +25°C, unless otherwise noted.) (Note 2)
A
PARAMETER
RF Input Frequency Range
Return Loss
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MHz
dB
f
RF
50 to 1000
-15
S
11
P
= no signal to 0dBm,
0.5dB settling accuracy
IN
Large-Signal Response Time
150
ns
RSSI MODE—50MHz
RF Input Power Range
3dB Dynamic Range
Range Center
(Note 3)
-65 to +5
70
dBm
dB
T
T
= -40°C to +85°C (Note 4)
= +25°C to +85°C,
A
-30
dBm
A
Temp Sensitivity when T > +25°C
+0.0083
-0.0154
dB/°C
dB/°C
A
P
= -25dBm
IN
T
A
= -40°C to +25°C,
Temp Sensitivity when T < +25°C
A
P
= -25dBm
IN
Slope
(Note 5)
T = -40°C to +85°C
A
19
-4
mV/dB
µV/°C
Typical Slope Variation
Intercept
(Note 6)
= -40°C to +85°C
-100
0.03
dBm
Typical Intercept Variation
RSSI MODE—100MHz
RF Input Power Range
3dB Dynamic Range
Range Center
T
dBm/°C
A
(Note 3)
-65 to +5
70
dBm
dB
T
= -40°C to +85°C (Note 4)
A
-30
dBm
T
P
= +25°C to +85°C,
A
Temp Sensitivity when T > +25°C
+0.0083
-0.0154
dB/°C
dB/°C
A
= -25dBm
IN
T
A
= -40°C to +25°C,
Temp Sensitivity when T < +25°C
A
P
= -25dBm
IN
Slope
(Note 5)
T = -40°C to +85°C
A
19
-4
mV/dB
µV/°C
Typical Slope Variation
Intercept
(Note 6)
= -40°C to +85°C
-100
0.03
dBm
Typical Intercept Variation
RSSI MODE—900MHz
RF Input Power Range
3dB Dynamic Range
Range Center
T
dBm/°C
A
(Note 3)
-65 to +5
70
dBm
dB
T
= -40°C to +85°C (Note 4)
A
-30
dBm
T
P
= +25°C to +85°C,
A
Temp Sensitivity when T > +25°C
0.0083
dB/°C
A
= -25dBm
IN
3
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit (Figure 1), V = +3.3V, f = 50MHz to 1000MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, T = -40°C to +85°C,
S
RF
L
A
unless otherwise noted. Typical values are at T = +25°C, unless otherwise noted.) (Note 2)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
T
P
= -40°C to +25°C,
A
Temp Sensitivity when T < +25°C
A
-0.0154
dB/°C
= -25dBm
IN
Slope
(Note 5)
T = -40°C to +85°C
A
18.1
-4
mV/dB
µV/°C
MAX2014
Typical Slope Variation
Intercept
(Note 6)
= -40°C to +85°C
-97
0.02
dBm
Typical Intercept Variation
T
dBm/°C
A
Note 2: The MAX2014 is guaranteed by design for T = -40°C to +85°C, as specified.
A
Note 3: Typical minimum and maximum range of the detector at the stated frequency.
Note 4: Dynamic range refers to the range over which the error remains within the stated bounds. The error is calculated at T = -40°C
A
and +85°C, relative to the curve at T = +25°C.
A
Note 5: 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 6: 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.
Typical Operating Characteristics
(Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, V
= 0V,
S
CC
IN
IN
L
PWDN
T
= +25°C, unless otherwise noted.)
A
OUTPUT VOLTAGE vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
2.0
3
f
IN
= 50MHz, T = +85°C
A
f
= 50MHz
IN
f
IN
= 50MHz
NORMALIZED TO DATA AT +25°C
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
NORMALIZED TO DATA AT +25°C
2
2
V
CC
= 3.6V
T
A
= +85°C
1
1
T
A
= -20°C
0
0
V
CC
= 2.7V
T
A
= +85°C
-1
-2
-3
-1
-2
-3
V
= 3.3V
CC
T
A
= -40°C
T
A
= -40°C
V
CC
= 3.0V
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
4
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
MAX2014
Typical Operating Characteristics (continued)
(Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, V
= 0V,
PWDN
S
CC
IN
IN
L
T
= +25°C, unless otherwise noted.)
A
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
OUTPUT VOLTAGE vs. INPUT POWER
2.0
f
= 100MHz
f
= 100MHz
IN
IN
f
= 50MHz, T = -40°C
A
IN
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
1
2
T
= +85°C
A
1
V
= 3.0V
CC
V
= 2.7V
CC
0
0
T = -20°C
A
T
A
= +85°C
-1
-2
-3
-1
-2
-3
T
A
= -40°C
V
CC
= 3.3V
T
= -40°C
A
V
= 3.6V
CC
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
3
f
= 100MHz, T = -40°C
A
f
IN
= 100MHz, T = +85°C
A
IN
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
2
V
CC
= 3.6V
1
1
V
= 2.7V, 3.0V
CC
0
0
V
= 2.7V
CC
V
= 3.0V
CC
-1
-2
-3
-1
-2
-3
V
CC
= 3.3V
V
CC
= 3.3V
V
CC
= 3.6V
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
5
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
Typical Operating Characteristics (continued)
(Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, V
= 0V,
S
CC
IN
IN
L
PWDN
T
= +25°C, unless otherwise noted.)
A
OUTPUT VOLTAGE vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
2.0
3
3
f
IN
= 450MHz
f
IN
= 450MHz
f = 450MHz, T = +85°C
IN A
NORMALIZED TO DATA AT +25°C
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
NORMALIZED TO DATA AT +25°C
2
2
MAX2014
T
A
= +85°C
V
CC
= 3.6V
1
1
T
A
= -20°C
0
0
V
CC
= 2.7V
T
A
= +85°C
V
CC
= 3.0V
-1
-2
-3
-1
-2
-3
T
A
= -40°C
V
CC
= 3.3V
T
A
= -40°C
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
OUTPUT VOLTAGE vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
3
f
= 450MHz, T = -40°C
A
IN
f
= 900MHz
IN
NORMALIZED TO DATA AT +25°C
2
1
V
= 2.7V
CC
0
-1
-2
-3
T
A
= +85°C
T
A
= -40°C
V
= 3.3V
CC
V
CC
= 3.0V
V
CC
= 3.6V
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
3
f
= 900MHz, T = +85°C
A
f
= 900MHz
IN
IN
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
2
1
T
A
= +85°C
V
CC
= 3.6V
1
T
A
= -20°C
0
0
V
= 2.7V
CC
V
= 3.3V
CC
-1
-2
-3
-1
-2
-3
V
= 3.0V
CC
T
A
= -40°C
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
6
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
MAX2014
Typical Operating Characteristics (continued)
(Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, V
= 0V,
S
CC
IN
IN
L
PWDN
T
= +25°C, unless otherwise noted.)
A
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
3
2.0
f
IN
= 900MHz, T = -40°C
A
f
= 1GHz
IN
f
= 1GHz
IN
NORMALIZED TO DATA AT +25°C
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
2
1
NORMALIZED TO DATA AT +25°C
2
T
A
= +85°C
1
V
= 2.7V
CC
0
0
T
A
= -20°C
T
= +85°C
A
-1
-2
-3
-1
-2
-3
T
A
= -40°C
V
CC
= 3.3V
T
A
= -40°C
V
CC
= 3.0V
V
= 3.6V
CC
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
3
f
= 1GHz, T = +85°C
A
IN
f
= 1GHz, T = -40°C
A
IN
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
2
V
= 3.6V
CC
1
1
V
= 2.7V
= 3.0V
CC
0
0
V
= 2.7V
CC
-1
-2
-3
-1
-2
-3
V
= 3.0V
V
CC
= 3.3V
CC
V
CC
= 3.3V
V
CC
V
CC
= 3.6V
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
-80 -70 -60 -50 -40 -30 -20 -10
INPUT POWER (dBm)
0
OUTPUT VOLTAGE vs. FREQUENCY
OUTPUT VOLTAGE vs. FREQUENCY
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
T = +25°C, +85°C
A
P
P
P
= +5dBm
= -5dBm
= -15dBm
IN
IN
IN
P
= -10dBm
= -30dBm
IN
T
A
= -40°C
P
P
= -25dBm
= -35dBm
IN
IN
P
IN
P
P
= -45dBm
= -55dBm
IN
IN
P
= -45dBm
= -60dBm
IN
T
A
= +85°C
P
IN
P
= -65dBm
IN
T
A
= +25°C
T
A
= -40°C
0
200
400
600
800
1000
0
200
400
600
800
1000
FREQUENCY INPUT (MHz)
FREQUENCY INPUT (MHz)
7
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
Typical Operating Characteristics (continued)
(Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, V
= 0V,
S
CC
IN
IN
L
PWDN
T
= +25°C, unless otherwise noted.)
A
OUTPUT VOLTAGE vs. FREQUENCY
RF PULSE RESPONSE
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
2.5
2.0
1.5
1.0
0.5
0
V
CC
= 3.6V
f
IN
= 100MHz
V
OUT
P
IN
= -10dBm
MAX2014
V
= 2.7V
CC
RFIN
(AC-COUPLED)
P
IN
P
IN
P
IN
= -30dBm
= -45dBm
= -60dBm
-0.5
-1.0
V
= 2.7V, 3.3V, 3.6V
CC
0
200
400
600
800
1000
TIME (50ns/div)
FREQUENCY INPUT (MHz)
S11 MAGNITUDE
S11 MAGNITUDE
-10.0
-12.5
-15.0
-17.5
-20.0
-22.5
-25.0
-10.0
-12.5
-15.0
-17.5
-20.0
-22.5
-25.0
T = -20°C
A
T = -40°C
A
V
= 2.7V, 3.0V, 3.3V, 3.6V
CC
T = +25°C
A
T = +85°C
A
0
200
400
600
800
1000
0
200
400
600
800
1000
FREQUENCY (MHz)
FREQUENCY (MHz)
Pin Description
PIN
1, 4
2, 3
5
NAME
DESCRIPTION
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).
V
CC
INHI, INLO Differential RF Inputs
Power-Down Input. Drive PWDN with a logic-high to power down the IC. PWDN must be connected to
GND for V between 4.75V and 5.25V with R4 = 75Ω.
PWDN
GND
SET
S
6
Ground. Connect to the printed circuit (PC) board ground plane.
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.
7
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).
8
OUT
EP
Exposed Pad (TDFN Package Only). Connect EP to GND using multiple vias, or the EP can also be left
unconnected.
—
8
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
MAX2014
Detailed Description
Applications Information
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 logarith-
mic amplifiers.
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 feed-
back 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.
The MAX2014 provides for improved performance with
a high 75dB dynamic range at 100MHz, and exception-
al accuracy over the extended temperature range and
supply voltage range.
V
S
R4
C6
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 AC-
coupled 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.
1
2
V
CC
C5
DETECTORS
8
7
OUT
SET
OUT
C1
INHI
20kΩ
RFIN
R1
20kΩ
C2
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.
INLO
3
4
6
5
GND
MAX2014
V
CC
PWDN
C4
C3
Figure 1. Detector-Mode (RSSI) Typical Application Circuit
Power-Supply Connections
The MAX2014 requires power-supply bypass capacitors
Table 1. Suggested Components of
Typical Application Circuits
connected close to each V
pin. At each V
pin,
CC
CC
connect a 0.1µF capacitor (C4, C6) and a 100pF capac-
itor (C3, C5), with the 100pF capacitor being closest to
the pin.
DESIGNATION
C1, C2
VALUE
680pF
100pF
0.1µF
0Ω
TYPE
0603 ceramic capacitors
0603 ceramic capacitors
0603 ceramic capacitors
0603 resistor
For power-supply voltages (V ) between 2.7V and 3.6V,
S
set R4 = 0Ω (see the typical application circuits, Figures
C3, C5
1 and 2 ).
C4, C6
For power-supply voltages (V ) between 4.75V and
S
R1*
5.25V, set R4 = 75Ω 1ꢀ (100ppm/°C max) and PWDN
R4**
0Ω
0603 resistor
must be connected to GND.
*RSSI mode only.
**V = 2.7V to 3.6V.
S
Power-Down Mode
The MAX2014 can be powered down by driving PWDN
This provides a detector slope of approximately
18mV/dB with a 0.5V to 1.8V output range.
with logic-high (logic-high = V ). In power-down
CC
mode, the supply current is reduced to a typical value
of 1µA. For normal operation, drive PWDN with a logic-
low. It is recommended when using power-down that
an RF signal not be applied before the power-down
signal is low.
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
9
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
variable-gain PA. As shown in the figure, the MAX2014
monitors the output of the PA through a directional cou-
pler. An internal integrator (Figure 2) compares the
detected signal with a reference voltage determined by
Layout Considerations
As with any RF circuit, the layout of the MAX2014 circuit
affects the device’s performance. Use an abundant num-
ber 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.
V
. The integrator, acting like a comparator, increas-
SET
es or decreases the voltage at OUT, according to how
closely the detected signal level matches the V ref-
SET
erence. 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).
Pin Configurations
MAX2014
TOP VIEW
OUT SET GND PWDN
V
S
8
7
6
5
R4
C6
1
2
V
CC
MAX2014
EP
C5
DETECTORS
8
7
OUT
SET
V
V
OUT
+
C1
INHI
20kΩ
RFIN
1
2
3
4
SET
V
INHI INLO
V
CC
CC
20kΩ
C2
TDFN
INLO
3
4
6
5
GND
TOP VIEW
+
8
7
6
5
OUT
1
2
3
4
V
CC
MAX2014
V
PWDN
CC
INHI
SET
C4
C3
MAX2015
INLO
GND
PWDN
Figure 2. Controller-Mode Typical Application Circuit
V
CC
POWER AMPLIFIER
µMAX
TRANSMITTER
COUPLER
GAIN-CONTROL INPUT
IN
LOGARITHMIC
DETECTOR
OUT
SET
SET-POINT
DAC
20kΩ
20kΩ
MAX2014
Figure 3. System Diagram for Automatic Gain-Control Loop
10
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
MAX2014
Package Information
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing per-
tains to the package regardless of RoHS status.
PACKAGE TYPE
8 TDFN-EP
PACKAGE CODE
T833+2
OUTLINE NO.
21-0137
LAND PATTERN NO.
90-0059
8 µMAX
U8+1
21-0036
90-0092
Ordering Information
Chip Information
PROCESS: BiCMOS
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 TDFN-EP*
8 TDFN-EP*
8 µMAX
MAX2014ETA+
MAX2014ETA+T
MAX2014EUA+
MAX2014EUA+T
8 µMAX
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
11
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
1
6/06
2/12
Initial release
Added µMAX package and updated style
—
1–7, 9, 10
MAX2014
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. The parametric values (min and max limits) shown in
the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
12 ____________________________Maxim Integrated Products, 160 Rio Robles, San Jose, CA 95134 408-601-1000
© 2012 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
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