300 MHz to 1100 MHz Balanced Mixer,

LO Buffer, and RF Balun

Data Sheet

ADL5369

Rev. A

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FEATURES

RF frequency range of 300 MHz to 1100 MHz

IF frequency range of 30 MHz to 450 MHz

Power conversion loss: 6.2 dB

SSB noise figure of 7.2 dB

Input IP3 of 28 dBm

Typical LO interface return loss of 0 dBm

Single-ended, 50 Ω RF and LO input ports

High isolation SPDT LO input switch

Typical single-supply operation: 3.3 V to 5 V

Exposed pad, 5 mm × 5 mm, 20-lead LFCSP

APPLICATIONS

Cellular base station receivers

Transmit observation receivers

Radio link downconverters

FUNCTIONAL BLOCK DIAGRAM

2

3

1

20

19

18

17

16

6

7

8

9

10

4

5

14

13

15

12

BIAS

GENERATOR

VPMX

RFIN

RFCT

COMM

COMM

LOI2

VPSW

VGS1

VGS0

LOI1

VCMI

IFOP

IFON

PWDN

COMM

VLO3

LGM3

VLO2

LOSW

NIC

ADL5369

NIC = NOT INTERNALLY CONNECTED.

11

Figure 1.

GENERAL DESCRIPTION

The ADL5369 uses a highly linear, doubly balanced passive mixer

core along with integrated radio frequency (RF) and local oscillator

(LO) balancing circuitry to allow single-ended operation. The

ADL5369 incorporates an RF balun, allowing optimal performance

over a 300 MHz to 1100 MHz RF input frequency range. The

balanced passive mixer arrangement provides good LO to RF

leakage, typically better than −25 dBm, and excellent intermod-

ulation performance. The balanced mixer core also provides

extremely high input linearity, allowing the device to be used in

demanding cellular applications where in-band blocking signals

may otherwise result in the degradation of dynamic perform-

ance. The passive mixer core yields a typical power conversion loss

of 6.2 dB.

The ADL5369 provides two switched LO paths that can be

used in time division duplex (TDD) applications where it is

desirable to rapidly switch between two local oscillators. LO

current can be externally set using a resistor to minimize dc

current commensurate with the desired level of performance.

For low voltage applications, the ADL5369 is capable of operation

at voltages down to 3.3 V with substantially reduced current.

Under low voltage operation, an additional logic pin is provided

to power down (<200 μA) the circuit when desired.

The ADL5369 is fabricated using a BiCMOS high performance

IC process. The device is available in a 5 mm × 5 mm, 20-lead

LFCSP and operates over a −40°C to +85°C temperature range.

An evaluation board is also available.

Table 1. Passive Mixers

RF Frequency

(MHz)

Single

Mixer

Single Mixer

and IF Amp

Dual Mixer

and IF Amp

300 to 1100

ADL5369

Not applicable

Not applicable

500 to 1700

ADL5367

ADL5357

ADL5358

1200 to 2500

ADL5365

ADL5355

ADL5356

2200 to 2700

Not

applicable

ADL5353

ADL5354

2300 to 2900

ADL5363

Not applicable

Not applicable