ADL5387ACPZ-R2 datasheet(16/27 Pages) AD

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ADL5387

Data Sheet

Rev. C | Page 16 of 27

APPLICATIONS INFORMATION

BASIC CONNECTIONS

Figure 51 shows the basic connections schematic for the ADL5387.

POWER SUPPLY

The nominal voltage supply for the ADL5387 is 5 V and is

applied to the VPA, VPB, VPL, and VPX pins. Ground should

be connected to the COM, CML, and CMRF pins. Each of

the supply pins should be decoupled using two capacitors;

recommended capacitor values are 100 pF and 0.1 µF.

LOCAL OSCILLATOR (LO) INPUT

The LO port is driven in a single-ended manner. The LO signal

must be ac-coupled via a 1000 pF capacitor directly into LOIP,

and LOIN is ac-coupled to ground also using a 1000 pF capacitor.

The LO port is designed for a broadband 50 Ω match and

therefore exhibits excellent return loss from 60 MHz to 4 GHz.

The LO return loss can be seen in Figure 24. Figure 50 shows

the LO input configuration.

LO INPUT

LOIP

LOIN

1000pF

Figure 50. Single-Ended LO Drive

The recommended LO drive level is between −6 dBm and

+6 dBm. For operation below 50 MHz, a minimum LO drive

level of 0 dBm should be used. The LO frequency at the input to

the device should be twice that of the desired LO frequency at

the mixer core. The applied LO frequency range is between

60 MHz and 4 GHz.

RFC

120nH

1000pF 1000pF

100pF

0.1µF

1000pF

100pF

1000pF

0.1µF

VPOS

ETC1-1-13

ADL5387

QHI

QLO

IHI

ILO

CMRF CMRF RFIP

RFIN CMRF

VPX

CML

VPA

COM

BIAS

VPL

VPB

QHI

QLO

IHI

ILO

LOIP

LOIN

CML

COM

Figure 51. Basic Connections Schematic for ADL5387

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