C2306 データシートの表示（PDF） - Unspecified

部品番号

コンポーネント説明

メーカー

C2306

MMDS / ISM / S-Band Mixer 1800 to 4800 MHz Operation

Unspecified 

Page 3

C2306

Recommended LO IN Port Matching

The LO IN port of the C2306 can be matched into 50 ohms with a lossy network. At 3dBm drive, the

unmatched port is at Z = 5 –15j ohms at 2.278 GHz. Also of note is that this impedance varies somewhat with

the LO drive level. Therefore a narrow band high Q network is not recommended due to inherent

manufacturing variation in LO drive available. The simple network below matches this port over an ~ 10%

bandwidth.

TRL 1

LO Source

50 ohm

C1

R1

LO IN

Pin 2

Part

C1

R1

TRL1

Value/Type

1.8pF NPO

4.3 Ω

θ = 21°, Z0=110Ω

Size

0603

0603

@2.5GHz

Test Board Layout

RF IN

LO IN

VDD

VDD

IF AMP

Material : GETEK

.028”

IF OUT

Biasing and Electrical Ground/

Thermal Considerations

Pins 3,4,5,10 and 12 should have ground vias straddling

both sides of the pin solder contact. This insures good

electrical and thermal grounding. If the IF AMP is run at

Idss (DC Grounded IF BIAS pin 14), this pin should be

grounded as described above. It is recommended that a

continuous ground plane be present under the package

to lower pin impedance and maintain similarity with the

matching environment used in the schematic in the

Application Information section. Bias for the IF amplifier

is supplied thru IF OUT pin 14. All ports are DC coupled

to the IC. Pins 2,6 and 13 should be kept at 0V DC to

maintain proper gate voltages. Pin 9 is internally biased

at 5V under normal operation and requires an external DC

block.

Specifications Subject to Change Without Notice

C2306Spec Rev

5 12/30/99

Share Link: