Document
19-2015; Rev 2; 8/02
KIT ATION EVALU E L B A AVAIL
RF Power Detectors in UCSP
General Description Features
o Space-Saving 2
✕2
MAX2205–MAX2208
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 output 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 integrated filter to allow for average power detection of CDMA signals over a 25dB dynamic range. The MAX2206/MAX2207/MAX2208 offer internal 50Ω termination for interfacing with a directional coupler. The MAX2205 has a high-impedance input to provide a lowloss 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.
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 MAX2205EBS MAX2206EBS MAX2207EBS MAX2208EBS 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*
*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.
Applications
Dual-Band GSM/EDGE Handsets Dual-Band CDMA/TDMA Handsets WCDMA Handsets PA Modules
Pin Configuration/Functional Diagram/Typical Operating Circuit
TOP VIEW
SHDN LOGIC INPUT 10kΩ (MAX2205) 240Ω (MAX2206/MAX2207/MAX2208) 680Ω (MAX2205) 10Ω (MAX2206) 0Ω (MAX2207/MAX2208) RFIN/SHDN (A1) TEMPERATURECOMPENSATED PEAK DETECTOR VCC (A2) VCC
FROM PA OUTPUT (MAX2205)
FROM COUPLER/TAP (MAX2206/MAX2207/MAX2208)
47pF
27pF
SHUTDOWN LOGIC
MAX2205 MAX2206 MAX2207 MAX2208
OUT (B2)
GND (B1)
TO ADC CFILTER (OPTIONAL)
UCSP
________________________________________________________________ Maxim Integrated Products
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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.
RF Power Detectors in UCSP MAX2205–MAX2208
ABSOLUTE MAXIMUM RATINGS
VCC to GND ...........................................................-0.3V to +6.5V RFIN/SHDN to GND....................................-0.3V to (VCC + 0.3V) RF Input Power (800MHz) (MAX2206/MAX2207/MAX2208) ...........................