19-5493; Rev 0; 9/10
TION KIT
EVALUA BLE
AVAILA
RF Power Detector
with Shutdown Control
Features
S
-25dBm to -5dBm Power Detection Range
S
±0.5dB Detection Error Due to Temperature
S
+2.7V to +5V Single-Supply Operation
S
Space-Saving 4-Bump, 1mm
2
UCSP Package
S
Shutdown Control
S
140ns Step-Response Time
General Description
The MAX2209A is a wideband (800MHz to 2GHz) RF
power detector. It takes an RF signal from the directional
coupler at the input, and
outputs a DC voltage propor-
tional to the RF peak voltage. The change in output
voltage versus temperature is very repeatable from part
to part and enables a lookup table based on nominal
behavior, minimizing the effective detection error
to less
than
Q0.5dB
relative to room temperature.
The MAX2209A comes in a space-saving 2 x 2, 0.5mm
pitch UCSP™.
MAX2209A
Applications
Dual-Band WCDMA Handsets
High-Speed Downlink Packet Access (HSDPA)
High-Speed Uplink Packet Access (HSUPA)
PART
Ordering Information
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
AGJ
MAX2209AEBS+ -40NC to +85NC
4 UCSP
+Denotes a lead(Pb)-free/RoHS-compliant package.
Functional Diagram/Typical Operating Circuit
MAX2209A
ADC
A1
OUT
A2
V
CC
V
CC
B1
GND
B2
RFIN/
SHDN
RF INPUT
2kI
SHDN
UCSP is a trademark of Maxim Integrated Products, Inc.
_______________________________________________________________
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.
RF Power Detector
with Shutdown Control
MAX2209A
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND.............................................................-0.3V to +6V
RFIN to GND ......................................... -0.3V to + (V
CC
+ 0.3V)
OUT to GND .......................................... -0.3V to + (V
CC
+ 0.3V)
RFIN Input Power .......................................................... +10dBm
Continuous Power Dissipation (T
A
= +70NC)
4-Bump WLP (derate 3mW/NC above +70NC).............238mW
Junction-to-Ambient Thermal
Resistance (B
JA
) (Note 1) ..........................................335NC/W
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range............................ -65NC to +160NC
Junction Temperature ....................................................+150NC
Bump Temperature (soldering, Note 2)
Infrared (15s) ...............................................................+260NC
Soldering Temperature (reflow) ......................................+240NC
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a
4-layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
Note 2:
For detailed information on soldering, refer to Application Note 1891:
Wafer-Level Packaging (WLP) and Its Applications.
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.
CAUTION!
ESD SENSITIVE DEVICE
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 2.7V to 5.0V, no RF signal applied, T
A
= -40NC to +85NC. Typical values are at V
CC
= 2.8V, T
A
= +25NC, unless otherwise
noted.) (Note 3)
PARAMETER
Supply Voltage
Supply Current
Idle Output Voltage
Output Current Source Capability
Output Current Sink Capability
Shutdown Current
SHDN
Logic-High
SHDN
Logic-Low
Turn-On Time
RF Step-Response Time
P
IN
= -5dBm, V
OUT
forced 100mV lower than open-
circuit output voltage
P
IN
= -25dBm, V
OUT
forced 10mV higher than open-
circuit output voltage
V
SHDN
= 0V
V
IH
, including 2kI resistor
V
IL
, including 2kI resistor
SHDN transitions to V
IH
, V
OUT
is within 90% of final
value (Note 4)
RF transitions from < -25dBm to -5dBm, V
OUT
is
within 90% of final value, 1kW + 10pF load (Note 4)
1.5
140
1.2
0.45
2
200
1000
75
CONDITIONS
MIN
2.7
3.9
35
2300
150
25
50
TYP
MAX
5.0
6
UNITS
V
mA
mV
FA
FA
FA
V
V
Fs
ns
2
______________________________________________________________________________________
RF Power Detector
with Shutdown Control
AC ELECTRICAL CHARACTERISTICS
(50I system, V
CC
= 2.8V, T
A
= -40NC to +85NC. Typical values are at T
A
= +25NC, unless otherwise noted.) (Note 3)
PARAMETER
RF Input Frequency
RF Input Return Loss
Output Voltage, 836MHz
Output Voltage, 1950MHz
Residual Error after Room
Temperature Calibration
(T
A
= -40NC to +85NC) (Note 4)
800MHz
2000MHz
-5dBm input
-25dBm input
-5dBm input
-25dBm input
-5dBm input
-25dBm input
CONDITIONS
MIN
800
16
9
0.88
0.06
0.72
0.06
Q0.5
Q1.5
TYP
MAX
2000
UNITS
MHz
dB
V
V
MAX2209A
dB
Note 3:
Guaranteed by production test at T
A
= +25NC. Guaranteed by design and characterization at T
A
= -40NC and T
A
= +85NC.
Note 4:
Guaranteed by design and characterization. See the
Typical Operating Characteristics.
Typical Operating Characteristics
(V
CC
= 2.8V. Typical values are at T
A
= +25NC, unless otherwise noted.)
OUTPUT VOLTAGE vs. INPUT POWER
(RF = 836MHz)
MAX2209A toc01
OUTPUT VOLTAGE vs. INPUT POWER
(RF = 1950MHz)
MAX2209A toc02
OUTPUT VOLTAGE vs. FREQUENCY
MAX2209A toc03
10
10
1
P
IN
= -5dBm
1
OUT (V)
OUT (V)
1
OUT (V)
0.1
P
IN
= -10dBm
0.1
0.1
P
IN
= -25dBm
0.01
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
0.01
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
0.01
0
500
1000 1500 2000 2500 3000 3500
INPUT FREQUENCY (MHz)
ERROR DUE TO TEMPERATURE
(RF = 836MHz, 58 UNITS)
MAX2209A toc04
ERROR DUE TO TEMPERATURE
(RF = 1950MHz, 58 UNITS)
MAX2209A toc05
SIGMA OF -40°C ERROR
0.14
0.12
SIGMA (dB)
MAX2209A toc06
1.5
1.0
0.5
ERROR (dB)
-40°C
1.5
1.0
0.5
ERROR (dB)
-40°C
0.16
0.10
0.08
0.06
0.04
0.02
0
RF = 836MHz
0
-0.5
-1.0
-1.5
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
+85°C
0
-0.5
+85°C
RF = 1950MHz
-1.0
-1.5
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
_______________________________________________________________________________________
3
RF Power Detector
with Shutdown Control
MAX2209A
Typical Operating Characteristics (continued)
(V
CC
= 2.8V. Typical values are at T
A
= +25NC, unless otherwise noted.)
SIGMA OF +85°C ERROR
MAX2209A toc07
RESIDUAL ERROR AFTER ROOM
TEMPERATURE CALIBRATION
MAX2209A toc08
RESIDUAL ERROR AFTER ROOM
TEMPERATURE CALIBRATION
0.4
0.3
0.2
ERROR (dB)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
RF = 836MHz, 58 UNITS, +85°C
MAX2209A toc09
0.12
0.10
0.08
SIGMA (dB)
0.5
0.4
0.3
0.2
ERROR (dB)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
RF = 836MHz, 58 UNITS, -40°C
0.5
RF = 1950MHz
0.06
0.04
0.02
0
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
RF = 836MHz
-25
-20
-15
-10
-5
0
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
INPUT POWER (dBm)
RESIDUAL ERROR AFTER ROOM
TEMPERATURE CALIBRATION
MAX2209A toc10
RESIDUAL ERROR AFTER ROOM
TEMPERATURE CALIBRATION
0.4
0.3
0.2
ERROR (dB)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
RF = 1950MHz, 58 UNITS, +85°C
MAX2209A toc11
0.5
0.4
0.3
0.2
ERROR (dB)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-25
-20
-15
-10
-5
RF = 1950MHz, 58 UNITS, -40°C
0.5
0
-25
-20
-15
-10
-5
0
INPUT POWER (dBm)
INPUT POWER (dBm)
SETTLING TIME FROM RF POWER
(ON/OFF RF = 836MHz)
1.0
0.8
OUT (V)
0.6
P
IN
= -7dBm
0.4
P
IN
= -10dBm
0.2
0
P
IN
= -15dBm
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
TIME (µs)
5
0
0
500
MAX2209A toc12
RF RETURN LOSS
vs. FREQUENCY
MAX2209A toc13
30
25
RETURN LOSS (dB)
20
15
10
P
IN
= -5dBm
1000 1500 2000 2500 3000 3500
FREQUENCY (MHz)
4
______________________________________________________________________________________
RF Power Detector
with Shutdown Control
Bump Configuration
TOP VIEW
BUMP SIDE DOWN
MAX2209A
+
OUT
A1
GND
B1
V
CC
A2
REFIN/SHDN
B2
MAX2209A
UCSP
Bump Description
BUMP
A1
A2
B1
B2
NAME
OUT
V
CC
GND
RFIN/SHDN
Detector Output
Power Supply. Bypass to GND with a capacitor as close as possible to the bump.
Ground Connection. Connect to PCB ground plane with as low inductance as possible.
RF Input and Shutdown Control. AC-couple the RF input and DC couple the shutdown control
through a 2kI resistor to this pin.
FUNCTION
_______________________________________________________________________________________
5
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