1200 MHz to 2500 MHz, Dual-Balanced

Mixer, LO Buffer, IF Amplifier, and RF Balun

ADL5356

Rev. 0

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FEATURES

RF frequency range of 1200 MHz to 2500 MHz

IF frequency range of 30 MHz to 450 MHz

Power conversion gain: 8.2 dB

SSB noise figure of 9.9 dB

SSB noise figure with 5 dBm blocker of 21 dB

Input IP3 of 31 dBm

Input P1dB of 11 dBm

Typical LO drive of 0 dBm

Single-ended, 50 Ω RF and LO input ports

High isolation SPDT LO input switch

Single-supply operation: 3.3 V to 5 V

Exposed paddle, 6 mm × 6 mm, 36-lead LFCSP

APPLICATIONS

Cellular base station receivers

Transmit observation receivers

Radio link downconverters

GENERAL DESCRIPTION

The ADL5356 uses a highly linear, doubly balanced, passive mixer

core along with integrated RF and local oscillator (LO) balancing

circuitry to allow single-ended operation. The ADL5356

incorporates the RF baluns, allowing for optimal performance over

a 1200 MHz to 2500 MHz RF input frequency range. Performance

is optimized for RF frequencies from 1700 MHz to 2500 MHz

using a low-side LO and RF frequencies from 1200 MHz to

1700 MHz using a high-side LO. The balanced passive mixer

arrangement provides good LO-to-RF leakage, typically better

than −35 dBm, and excellent intermodulation 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 performance. A high linearity IF buffer

amplifier follows the passive mixer core to yield a typical power

conversion gain of 8.2 dB and can be used with a wide range of

output impedances.

The ADL5356 provides two switched LO paths that can be used

in TDD applications where it is desirable to ping-pong 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 ADL5356 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 (<300 μA) the circuit when desired.

FUNCTIONAL BLOCK DIAGRAM

2

3

1

36

35

34

33

32

31

30

29

28

10

11

12

13

14

15

16

17

18

4

6

7

5

8

9

26

25

27

24

22

21

23

20

19

ADL5356

VGS0

VGS1

VGS2

LOSW

PWDN

VPOS

COMM

LOI2

LOI1

MNIN

MNCT

COMM

DVIN

VPOS

COMM

VPOS

COMM

DVCT

Figure 1.

The ADL5356 is fabricated using a BiCMOS high performance

IC process. The device is available in a 6 mm × 6 mm, 36-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

500 to 1700

ADL5367

ADL5357

ADL5358

1200 to 2500

ADL5365

ADL5355

ADL5356