ADL5365

Rev. 0 | Page 18 of 24

The performance of this amplifier is critical in achieving a

high intercept passive mixer without degrading the noise floor

of the system. This is a critical requirement in an interferer rich

environment, such as cellular infrastructure, where blocking

interferers can limit mixer performance. The bandwidth of the

intermodulation performance is somewhat influenced by the

current in the LO amplifier chain. For dc current sensitive

applications, it is permissible to reduce the current in the

LO amplifier by raising the value of the external bias control

resistor. For dc current critical applications, the LO chain

can operate with a supply voltage as low as 3.3 V, resulting in

substantial dc power savings.

In addition, when operating with supply voltages below 3.6 V,

the ADL5365 has a power-down mode that permits the dc

current to drop to <200 μA.

All of the logic inputs are designed to work with any logic family

that provides a Logic 0 input level of less than 0.4 V and a Logic 1

input level that exceeds 1.4 V. All logic inputs are high impedance

up to Logic 1 levels of 3.3 V. At levels exceeding 3.3 V, protection

circuitry permits operation up to 5.5 V, although a small bias

current is drawn.