[AK1222]

MS1314-E-01

2013/05

- 16 -

10. Typical Evaluation Board Schematic

1. Typical Evaluation Board Schematic

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)

RF Input

Impedance Matching

Output Load

Resistor

RLoad

RFIN

LOINN

LOINP

IFOUTP

IFOUTN

AK1222

VSS

L1

BALUN

VDD

(Powefeeding for Open-drain Output)

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

VSS