Active Receive Mixer

Low Frequency to 3.8 GHz

Data Sheet

AD8342

Rev. C

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FEATURES

Broadband RF, LO, and IF ports

Conversion gain: 3.7 dB

Noise figure: 12.2 dB

Input IP3: 22.7 dBm

Input P1dB: 8.3 dBm

LO drive: 0 dBm

Differential high impedance RF input port

Single-ended, 50 Ω LO input port

Open-collector IF output port

Single-supply operation: 5 V at 98 mA

Power-down mode

Exposed pad LFCSP: 3 mm × 3 mm

APPLICATIONS

Cellular base station receivers

ISM receivers

Radio links

RF instrumentation

FUNCTIONAL BLOCK DIAGRAM

8

7

6

13

15

16

COMM

IFOP

IFOM

5

COMM

14

2

1

3

4

COMM

RFCM

RFIN

VPMX

VPDC

PWDN

EXRB

COMM

11

12

10

9

VPLO

LOCM

LOIN

COMM

BIAS

AD8342

Figure 1.

GENERAL DESCRIPTION

The AD8342 is a high performance, broadband active mixer. It

is well suited for demanding receive channel applications that

require wide bandwidth on all ports and very low intermodulation

distortion and noise figure.

The AD8342 provides a typical conversion gain of 3.7 dB with

an RF frequency of 238 MHz. The integrated LO driver presents

a 50 Ω input impedance with a low LO drive level, helping to

minimize the external component count.

The differential high impedance broadband RF port allows easy

interfacing to both active devices and passive filters. The RF

input accepts input signals as large as 1.6 V p-p or 8 dBm

(relative to 50 Ω) at P1dB.

The open-collector differential outputs provide excellent balance

and can be used with a differential filter or IF amplifier, such as

the AD8370, AD8375, AD8351, AD8352, or ADL5561. These

outputs can also be converted to a single-ended signal using a

matching network or a balun transformer. The outputs are capable

of swinging 2 V p-p when biased to the VPOS supply rail.

The AD8342 is fabricated on an Analog Devices, Inc.,

proprietary, high performance SiGe IC process. The AD8342 is

available in a 16-lead LFCSP. It operates over a −40°C to +85°C

temperature range. An evaluation board is also available.