DESCRIPTION
The LT®5504 is an 800MHz to 2700MHz monolithic integrated measuring receiver, capable of detecting a wide dynamic range RF signal from –75dBm to +5dBm. The logarithm of the RF signal is precisely converted into a linear DC voltage. The LT5504 consists of RF/IF limiters, an LO buffer amplifier, a limiting mixer, a 3rd-order 450MHz integrated low pass filter, RF/IF detectors and an output interface. The ultrawide dynamic range is achieved by simultaneously measuring the RF signal and a down converted IF signal obtained using the on-chip mixer and an external local oscillator.

FEATURES
■ RF Frequency Range: 800MHz to 2.7GHz
■ Ultra Wide Dynamic Range: 75dB at 900MHz
■ Wide Power Supply Range: 2.7V to 5.25V
■ Low Supply Current: 14.7mA at 3V
■ 8-Lead MS0P Package

APPLICATIONS
■ RSSI Measurements
■ Receive AGC
■ Transmit Power Control
■ ASK and Envelope Demodulation
■ GSM/TDMA/CDMA/WCDMA