MAX2014 [MAXIM]
50MHz to 1000MHz, 75dB Logarithmic Detector/Controller; 50MHz至1000MHz ， 75分贝对数检测器/控制器
| 型号： | MAX2014 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 50MHz to 1000MHz, 75dB Logarithmic Detector/Controller |
| 文件： | 总10页 (文件大小：278K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0583; Rev 0; 6/06
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
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
♦ Available in 8-Pin TDFN Package
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.
*See the Power-Supply Connections section.
Ordering Information
PIN-
PACKAGE
PKG
CODE
PART
TEMP RANGE
Applications
AGC Measurement and Control
RF Transmitter Power Measurement
RSSI Measurements
8 TDFN-EP*
(3mm x 3mm)
MAX2014ETA-T
-40°C to +85°C
T833-2
T833-2
8 TDFN-EP*
(3mm x 3mm)
MAX2014ETA+T -40°C to +85°C
Cellular Base-Station, WLAN, Microwave Link,
Radar, and other Military Applications
+Denotes lead-free package.
T = Tape-and-reel package.
*EP = Exposed paddle.
Optical Networks
Functional Diagram
V
CC
1, 4
POWER DETECTORS
Σ
Σ
Σ
8
2
3
OUT
INHI
INLO
7
50Ω
7dB
7dB
7dB
SET
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/Dallas 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
8-Pin TDFN (derate 18.5mW/°C above +70°C) .........1480mW
V
(Pins 1, 4) to GND........................................-0.3V to +5.25V
θ
θ
(without airflow)..........................................................54°C/W
(junction to exposed paddle) ...................................8.3°C/W
JA
JC
+ 0.3V)
CC
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
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.
DC ELECTRICAL CHARACTERISTICS
(MAX2014 Typical Application Circuit (Figure 1), V = +3.3V, f = 50MHz to 1000MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, T = -40°C to
S
RF
L
A
+85°C, unless otherwise noted. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
A
PARAMETER
POWER SUPPLY
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
R4 = 75Ω 1ꢀ, PWDN must be
connected to GND
4.75
2.7
5.25
3.6
Supply Voltage
Supply Current
V
S
V
R4 = 0Ω
T
= +25°C, V = 5.25V,
S
A
17.3
R4 = 75Ω
I
mA
CC
T
T
= +25°C
17.3
0.05
1
20.5
A
Supply Current Variation with Temp
Shutdown Current
I
I
= -40°C to +85°C
mA/°C
µA
CC
A
V
= V
CC
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)
AC ELECTRICAL CHARACTERISTICS
(MAX2014 Typical Application Circuit (Figure 1), V = +3.3V, f = 50MHz to 1000MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, T = -40°C to
S
RF
L
A
+85°C, unless otherwise noted. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
A
PARAMETER
RF Input Frequency Range
Return Loss
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MHz
dB
f
50 to 1000
-15
RF
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 2)
= -40°C to +85°C (Note 3)
-65 to +5
70
dBm
dB
T
A
-30
dBm
2
_______________________________________________________________________________________
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2014 Typical Application Circuit (Figure 1), V = +3.3V, f = 50MHz to 1000MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ, T = -40°C to
S
RF
L
A
+85°C, unless otherwise noted. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
A
PARAMETER
Temp Sensitivity when T > +25°C
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
T
P
= +25°C to +85°C,
= -25dBm
A
+0.0083
-0.0154
dB/°C
A
IN
T
A
= -40°C to +25°C,
= -25dBm
Temp Sensitivity when T < +25°C
A
dB/°C
P
IN
Slope
(Note 4)
T = -40°C to +85°C
A
19
-4
mV/dB
µV/°C
Typical Slope Variation
Intercept
(Note 5)
= -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
A
dBm/°C
(Note 2)
-65 to +5
70
dBm
dB
T
= -40°C to +85°C (Note 3)
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 4)
T = -40°C to +85°C
A
19
-4
mV/dB
µV/°C
Typical Slope Variation
Intercept
(Note 5)
= -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
A
dBm/°C
(Note 2)
-65 to +5
70
dBm
dB
T
= -40°C to +85°C (Note 3)
A
-30
dBm
T
P
= +25°C to +85°C,
A
Temp Sensitivity when T > +25°C
0.0083
dB/°C
dB/°C
A
= -25dBm
IN
T
A
= -40°C to +25°C,
Temp Sensitivity when T < +25°C
A
-0.0154
P
= -25dBm
IN
Slope
(Note 4)
T = -40°C to +85°C
A
18.1
-4
mV/dB
µV/°C
Typical Slope Variation
Intercept
(Note 5)
= -40°C to +85°C
-97
0.02
dBm
Typical Intercept Variation
T
A
dBm/°C
Note 1: The MAX2014 is guaranteed by design for T = -40°C to +85°C, as specified.
A
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 = -40°C
A
and +85°C, relative to the curve at T = +25°C.
A
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.
_______________________________________________________________________________________
3
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
Typical Operating Characteristics
(MAX2014 Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ,
S
CC
IN
IN
L
V
= 0V, T = +25°C, unless otherwise noted.)
PWDN
A
OUTPUT VOLTAGE vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
3
f
= 50MHz, T = +85°C
A
f
= 50MHz
IN
IN
f
= 50MHz
IN
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
2
1
V
= 3.6V
CC
T
= +85°C
A
1
T
= -20°C
A
0
0
V
= 2.7V
CC
T
= +85°C
A
-1
-2
-3
-1
-2
-3
V
= 3.3V
CC
T
= -40°C
A
T
= -40°C
A
V
= 3.0V
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
3
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
OUTPUT VOLTAGE vs. INPUT POWER
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
f
= 100MHz
f
= 100MHz
IN
IN
f
= 50MHz, T = -40°C
A
IN
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
2
T
= +85°C
A
1
1
V
= 3.0V
CC
V
= 2.7V
CC
0
0
T = -20°C
A
T
= +85°C
A
-1
-2
-3
-1
-2
-3
T
= -40°C
A
V
= 3.3V
T
= -40°C
CC
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
2
1
0
3
f
= 100MHz, T = -40°C
A
f
= 100MHz, T = +85°C
A
IN
IN
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
V
= 3.6V
CC
1
V
= 2.7V, 3.0V
CC
0
V
= 2.7V
CC
V
= 3.0V
CC
-1
-2
-3
-1
-2
-3
V
= 3.3V
CC
V
= 3.3V
CC
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
4
_______________________________________________________________________________________
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
Typical Operating Characteristics (continued)
(MAX2014 Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ,
S
CC
IN
IN
L
V
= 0V, T = +25°C, unless otherwise noted.)
PWDN
A
OUTPUT VOLTAGE vs. INPUT POWER
OUTPUT VOLTAGE ERROR 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
3
f
= 450MHz
IN
f
= 450MHz
f = 450MHz, T = +85°C
IN A
NORMALIZED TO DATA AT +25°C
IN
NORMALIZED TO DATA AT +25°C
2
1
2
T
= +85°C
A
V
CC
= 3.6V
1
T
= -20°C
A
0
0
V
= 2.7V
CC
T
= +85°C
A
V
= 3.0V
CC
-1
-2
-3
-1
-2
-3
T
= -40°C
V
= 3.3V
A
CC
T
= -40°C
A
-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
= +85°C
A
T
= -40°C
A
V
= 3.3V
CC
V
= 3.0V
CC
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
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
= +85°C
A
V
= 3.6V
CC
1
T
= -20°C
A
0
0
V
= 2.7V
CC
V
= 3.3V
CC
-1
-2
-3
-1
-2
-3
V
= 3.0V
CC
T
= -40°C
A
-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)
(MAX2014 Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ,
S
CC
IN
IN
L
V
= 0V, T = +25°C, unless otherwise noted.)
PWDN
A
OUTPUT VOLTAGE ERROR vs. INPUT POWER
OUTPUT VOLTAGE vs. INPUT POWER
OUTPUT VOLTAGE ERROR vs. INPUT POWER
3
2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
3
f
= 900MHz, T = -40°C
A
IN
f
= 1GHz
IN
f
= 1GHz
IN
NORMALIZED TO DATA AT +25°C
NORMALIZED TO DATA AT +25°C
2
T
= +85°C
A
1
1
V
= 2.7V
CC
0
0
T
= -20°C
A
T
= +85°C
A
-1
-2
-3
-1
-2
-3
T
= -40°C
A
V
= 3.3V
CC
T
= -40°C
A
V
= 3.0V
CC
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
= 3.3V
CC
CC
V
= 3.3V
CC
V
CC
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
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
= -40°C
A
P
P
= -25dBm
= -35dBm
IN
IN
P
IN
P
P
= -45dBm
= -55dBm
IN
IN
P
= -45dBm
= -60dBm
IN
T
= +85°C
A
P
IN
P
= -65dBm
IN
T
= +25°C
T
= -40°C
A
A
0
200
400
600
800
1000
0
200
400
600
800
1000
FREQUENCY INPUT (MHz)
FREQUENCY INPUT (MHz)
6
_______________________________________________________________________________________
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
Typical Operating Characteristics (continued)
(MAX2014 Typical Application Circuit (Figure 1), V = V
= 3.3V, P = -10dBm, f = 100MHz, R1 = 0Ω, R4 = 0Ω, R = 10kΩ,
IN IN L
S
CC
V
= 0V, T = +25°C, unless otherwise noted.)
PWDN
A
OUTPUT VOLTAGE vs. FREQUENCY
RF PULSE RESPONSE
2.0
2.5
2.0
1.5
1.0
0.5
0
V
= 3.6V
f
= 100MHz
CC
IN
V
OUT
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
P
= -10dBm
IN
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
A
= -40°C
A
V
= 2.7V, 3.0V, 3.3V, 3.6V
CC
T
= +25°C
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 Paddle. Connect EP to GND using multiple vias, or the EP can also be left unconnected.
_______________________________________________________________________________________
7
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
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.
This provides a detector slope of approximately
18mV/dB with a 0.5V to 1.8V output range.
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
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.
R4
C6
1
2
V
CC
C5
DETECTORS
8
7
OUT
SET
OUT
C1
INHI
20kΩ
RFIN
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.
R1
20kΩ
C2
INLO
3
4
6
5
GND
V
CC
PWDN
MAX2014
C4
C3
Power-Supply Connections
The MAX2014 requires power-supply bypass capacitors
connected close to each V
pin. At each V
pin,
CC
Figure 1. Detector-Mode (RSSI) Typical Application Circuit
CC
connect a 0.1µF capacitor (C4, C6) and a 100pF capac-
itor (C3, C5), with the 100pF capacitor being closest to
the pin.
Table 1. Suggested Components of
Typical Applications Circuits
For power-supply voltages (V ) between 2.7V and 3.6V,
S
set R4 = 0Ω (see the typical application circuits, Figures
DESIGNATION
C1, C2
C3, C5
C4, C6
R1*
VALUE
680pF
100pF
0.1µF
0Ω
TYPE
1 and 2 ).
0603 ceramic capacitors
0603 ceramic capacitors
0603 ceramic capacitors
0603 resistor
For power-supply voltages (V ) between 4.75V and
S
5.25V, set R4 = 75Ω 1ꢀ (100ppm/°C max) and PWDN
must be connected to GND.
Power-Down Mode
R4**
0Ω
0603 resistor
The MAX2014 can be powered down by driving PWDN
with logic-high (logic-high = V ). In power-down
CC
*RSSI mode only.
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.
**V = 2.7V to 3.6V.
S
8
_______________________________________________________________________________________
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
Controller Mode
The MAX2014 can also be used as a detector/controller
POWER AMPLIFIER
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 cou-
pler. An internal integrator (Figure 2) compares the
detected signal with a reference voltage determined by
TRANSMITTER
COUPLER
GAIN-CONTROL INPUT
V
. The integrator, acting like a comparator, increas-
SET
IN
LOGARITHMIC
DETECTOR
es or decreases the voltage at OUT, according to how
closely the detected signal level matches the V ref-
OUT
SET
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).
SET-POINT
DAC
20kΩ
20kΩ
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.
MAX2014
Figure 3. System Diagram for Automatic Gain-Control Loop
Pin Configuration
V
S
R4
C6
TOP VIEW
OUT SET GND PWDN
1
2
V
CC
8
7
6
5
C5
DETECTORS
8
7
OUT
SET
V
V
OUT
C1
INHI
20kΩ
RFIN
SET
MAX2014
20kΩ
C2
INLO
3
4
6
5
GND
1
2
3
4
V
CC
PWDN
MAX2014
V
V
CC
CC
INHI INLO
C4
C3
TDFN
Figure 2. Controller-Mode Typical Application Circuit
Chip Information
PROCESS: BiCMOS
_______________________________________________________________________________________
9
50MHz to 1000MHz, 75dB Logarithmic
Detector/Controller
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.)
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
1
H
21-0137
2
PACKAGE VARIATIONS
COMMON DIMENSIONS
MIN. MAX.
SYMBOL
PKG. CODE
T633-1
N
6
D2
1.50±0.10 2.30±0.10 0.95 BSC
1.50±0.10 2.30±0.10
E2
e
JEDEC SPEC
MO229 / WEEA
MO229 / WEEA
MO229 / WEEC
MO229 / WEEC
MO229 / WEEC
b
[(N/2)-1] x e
1.90 REF
1.90 REF
1.95 REF
1.95 REF
1.95 REF
2.00 REF
2.00 REF
2.40 REF
2.40 REF
0.40±0.05
0.40±0.05
0.30±0.05
0.30±0.05
0.30±0.05
A
0.70
2.90
2.90
0.00
0.20
0.80
3.10
3.10
0.05
0.40
T633-2
6
D
E
0.95 BSC
T833-1
8
1.50±0.10 2.30±0.10 0.65 BSC
1.50±0.10 2.30±0.10 0.65 BSC
1.50±0.10 2.30±0.10 0.65 BSC
T833-2
8
A1
L
T833-3
8
T1033-1
T1033-2
T1433-1
T1433-2
10
10
14
14
1.50±0.10 2.30±0.10 0.50 BSC MO229 / WEED-3 0.25±0.05
k
0.25 MIN.
0.20 REF.
1.50±0.10 2.30±0.10
0.25±0.05
0.20±0.05
0.20±0.05
A2
0.50 BSC MO229 / WEED-3
1.70±0.10 2.30±0.10 0.40 BSC
1.70±0.10 2.30±0.10 0.40 BSC
- - - -
- - - -
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
2
-DRAWING NOT TO SCALE-
H
21-0137
2
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.
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