ADL5369

Data Sheet

Rev. A | Page 18 of 23

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 ADL5369 has a power-down mode that permits the dc

current to drop to <200 μA.

All of the logic inputs 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.