MAX2205 Datasheet, PDF (1/7 Pages) Maxim Integrated Products – RF Power Detectors in UCSP

19-2015; Rev 2; 8/02
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RF Power Detectors in UCSP
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 50Ω 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 1mm²
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)
Ordering Information
PART
TEMP RANGE BUMP-PACKAGE
MAX2205EBS
-40°C to +85°C 2 × 2 UCSP*
MAX2206EBS
-40°C to +85°C 2 × 2 UCSP*
MAX2207EBS
-40°C to +85°C 2 × 2 UCSP*
MAX2208EBS
-40°C to +85°C 2 × 2 UCSP*
*Requires solder temperature profile described in the Absolute
Maximum Ratings section.
2 ✕ 2 UCSP
1.01 mm ✕ 1.01 mm
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configuration/Functional Diagram/Typical Operating Circuit
TOP VIEW
FROM PA OUTPUT
(MAX2205)
680Ω (MAX2205)
10Ω (MAX2206)
0Ω (MAX2207/MAX2208)
FROM COUPLER/TAP
(MAX2206/MAX2207/MAX2208)
47pF
SHDN LOGIC INPUT
10kΩ (MAX2205)
240Ω (MAX2206/MAX2207/MAX2208)
RFIN/SHDN
(A1)
TEMPERATURE-
COMPENSATED
PEAK
DETECTOR
SHUTDOWN
LOGIC
V_CC
(A2)
MAX2205
MAX2206
MAX2207
MAX2208
V_CC
27pF
GND
OUT
(B1)
(B2)
UCSP
C_FILTER
(OPTIONAL)
TO ADC
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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.