High IP3,

10 MHz to 6 GHz, Active Mixer

ADL5801

Rev. 0

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FEATURES

Broadband upconverter/downconverter

Power conversion gain of 1.8 dB

Broadband RF, LO, and IF ports

SSB noise figure (NF) of 9.75 dB

Input IP3: 28.5 dBm

Input P1dB: 13.3 dBm

Typical LO drive: 0 dBm

Single-supply operation: 5 V at 130 mA

Adjustable bias for low power operation

Exposed paddle, 4 mm × 4 mm, 24-lead LFCSP package

APPLICATIONS

Cellular base station receivers

Radio link downconverters

Broadband block conversion

Instrumentation

FUNCTIONAL BLOCK DIAGRAM

GND

VPLO

ENBL VSET

VPDT

GND

RFIP

NC

GND

VPLO

7

8

15

16

17

18

21

22

23

ADL5801

19

20

GND

IFON

13

14

DETO GND

VPRF

GND

GND

GND

IFOP

RFIN

GND

GND

LOIP

LOIN

6

5

4

3

2

1

24

9

10

11

12

DET

V2I

Figure 1.

GENERAL DESCRIPTION

The ADL5801 uses a high linearity, doubly balanced, active

mixer core with integrated LO buffer amplifier to provide high

dynamic range frequency conversion from 10 MHz to 6 GHz.

The mixer benefits from a proprietary linearization architecture

that provides enhanced input IP3 performance when subject to

high input levels. A bias adjust feature allows the input linearity,

SSB noise figure, and dc current to be optimized using a single

control pin. An optional input power detector is provided for

adaptive bias control. The high input linearity allows the device

to be used in demanding cellular applications where in-band

blocking signals may otherwise result in degradation in

dynamic performance. The adaptive bias feature allows the part

to provide high input IP3 performance when presented with

large blocking signals. When blockers are removed, the

ADL5801 can automatically bias down to provide low noise

figure and low power consumption.

The balanced active mixer arrangement provides superb LO-to-

RF and LO-to-IF leakage, typically better than −40 dBm. The IF

outputs are designed to provide a typical voltage conversion

gain of 7.8 dB when loaded into a 200 Ω load. The broad

frequency range of the open-collector IF outputs allows the

ADL5801 to be applied as an upconverter for various transmit

applications.

The ADL5801 is fabricated using a SiGe high performance IC

process. The device is available in a compact 4 mm × 4 mm,

24-lead LFCSP package and operates over a −40°C to +85°C

temperature range. An evaluation board is also available.