MAX4473 Datasheet - Maxim

MAX4473 Low-Cost / Low-Voltage / PA Power Control Amplifier

The MAX4473 PA power control IC is intended for closed-loop bias control of GSM power amplifiers. The device facilitates accurate control of the current delivered to the power amplifier (PA) via a control voltage. The error amplifier senses the voltage drop across an external current-sense resistor .

MAX4473 Features

* o Optimized for GSM Timing Requirements o +2.7V to +6.5V Single-Supply Operation o 1.2mA Supply Current o ≤1µA Supply Current in Shutdown Mode o Guaranteed 1.5µs Enable/Disable Times o Active Output Pull-Down in Shutdown Mode o Rail-to-Rail Error Amplifier Output o Rail-to-Rail Power Control Input o

MAX4473_MaximIntegratedProducts.pdf