[AK1220]

10. Typical Evaluation Board Schematic

RF Input

Impedance Matching

Output Load

Resistor

RFIN

LOINN

LOINP

IFOUTP

IFOUTN

AK1220

VSS

L1

BALUN

VDD

(Powefeeding for Open-drain

)

VSS

VDD

VSS

LO Buffer

Iref

Mixer

VSS

BIAS

Current Adjustment Resistor

22 to 56k

Ω

RF Input

LO Input

IF Output

100pF

10nF

100pF

100pF

IF Output

Impedance Matching

100pF

10nF

VSS

VDD

VSS

C1

50

Ω

Fig. 11 Typical Evaluation Board Schematic

Note 1) The open drain output needs power feeding via a inductor. (IFOUTP pin and IFOUTN)

Note 2) It is necessary to adjust impedance matching as to its setting frequency. (RF input and IF output)

MS1165-E-01

16

2010/11