RF2459 datasheet(3/8 Pages) RFMD

3 / 8 page

Preliminary

8-99

RF2459

Rev A2 010717

Function

Description

Interface Schematic

1LO IN

Mixer LO single-ended input. The pin is internally DC blocked. External

matching sets impedance.

2GND2

Ground for downconverter. Keep traces physically short and connect

directly to ground plane for best performance.

3VCC

Supply voltage for downconverter. External RF bypassing is required.

The trace length between the bypass caps and the pin should be mini-

mized. Connect ground sides of caps directly to ground.

4GND1

Same as pin 2.

5RF IN

Mixer RF single-ended input. The pin is internally DC blocked. External

matching sets input impedance.

6GND3

Same as pin 2.

7IF-

IF output pin. The output is balanced. A current combiner external net-

work performs a differential to single-ended conversion and sets the

output impedance. There must be a DC path from VCC to this pin. this

is normally achieved with the current combiner network. A DC blocking

cap must be present if the IF filter input has a DC path to ground.

8IF+

Same as pin 7, except complementary output.

LO IN

RF IN

IF+

IF-

RF2459 Datasheet(PDF) 3 Page - RF Micro Devices