FEATURES
General Description
The MAX4003 low-cost, low-power logarithmic amplifier is designed to detect the power levels of RF power amplifiers (PAs) operating from 100MHz to 2500MHz. A typical dynamic range of 45dB makes this logarithmic amplifier useful in a variety of wireless applications including cellular handset PA control, TSSI for wireless terminal devices, and other transmitter power measurements. This logarithmic amplifier provides much wider measurement range and superior accuracy than typical diode-based detectors. Excellent temperature stability is achieved over the full operating range of -40°C to +85°C.
Features
♦ Complete RF Detector
♦ Frequency Range from 100MHz to 2500MHz
♦ Input Range of -58dBV to -13dBV
(-45dBm to 0dBm into 50Ω)
♦ Fast Response: 70ns in 10dB Steps
♦ Low-Current Consumption: 5.9mA at VCC = 3.0V
♦ 13µA (typ) Shutdown Current
♦ Available in 8-Bump UCSP or 8-Pin µMAX and
Thin QFN Packages
Applications
Cellular Handsets (TDMA, CDMA, GPRS, GSM)
TSSI for Wireless Terminal Devices
Transmitter Power Measurement and Control
RSSI for Fiber Modules
Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.