General Description
The MAX2205–MAX2208 wideband (800MHz to 2GHz)
power detectors are ideal for GSM/EDGE (MAX2206),
TDMA (MAX2207), and CDMA (MAX2205/MAX2208)
applications. The MAX2206/MAX2207/MAX2208 take an
RF signal from a directional coupler at the input, and out-
put a highly repeatable voltage. The output voltage
increases monotonically with increasing input power. The
output is compensated for temperature and process
shifts, reducing the worst-case variation to less than
±1dB at full power and ±2.5dB at the lowest power.
The MAX2206 features 40dB dynamic range, making
it ideally suited to GSM/EDGE applications. The
MAX2207 offers reduced current consumption for TDMA
applications. The MAX2205/MAX2208 each have an inte-
grated filter to allow for average power detection of
CDMA signals over a 25dB dynamic range. The
MAX2206/MAX2207/MAX2208 offer internal 50
termina-
tion for interfacing with a directional coupler. The
MAX2205 has a high-impedance input to provide a low-
loss resistive tap in CDMA applications. All devices allow
the user to control the averaging time constant externally.
The MAX2205–MAX2208 come in a space-saving 2
2,
0.5mm-pitch UCSP and require only three external
components.
Applications
Dual-Band GSM/EDGE Handsets
Dual-Band CDMA/TDMA Handsets
WCDMA Handsets
PA Modules
Features
o
Space-Saving 2
2 UCSP Occupies Only 1mm
2
o
Internal Temperature Compensation Gives ±0.3dB
Detection Accuracy
o
No External Filter or Op Amp Required
o
Power-Detection Range
40dB (MAX2206)
25dB (MAX2205/MAX2207/2208)
M
RF Power Detectors in UCSP
________________________________________________________________
Maxim Integrated Products
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.
1
TOP VIEW
GND
(B1)
OUT
(B2)
TEMPERATURE-
COMPENSATED
PEAK
DETECTOR
SHUTDOWN
LOGIC
UCSP
TO ADC
10k
(MAX2205)
240
(MAX2206/MAX2207/MAX2208)
27pF
680
(MAX2205)
10
(MAX2206)
0
(MAX2207/MAX2208)
47pF
FROM COUPLER/TAP
(MAX2206/MAX2207/MAX2208)
MAX2205
MAX2206
MAX2207
MAX2208
SHDN LOGIC INPUT
RFIN/SHDN
(A1)
V
CC
(A2)
V
CC
C
(OPTIONAL)
FROM PA OUTPUT
(MAX2205)
Pin Configuration/Functional Diagram/Typical Operating Circuit
19-2015; Rev 2; 8/02
EVALUATION KIT
AVAILABLE
Ordering Information
UCSP is a trademark of Maxim Integrated Products, Inc.
*
Requires solder temperature profile described in the Absolute
Maximum Ratings section.
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
BUMP-PACKAGE
2
×
2 UCSP*
2
×
2 UCSP*
2
×
2 UCSP*
2
×
2 UCSP*
MAX2205
EBS
MAX2206
EBS
MAX2207
EBS
MAX2208
EBS
2
2 UCSP
1.01 mm
1.01 mm