RF2368PCBA 查看數據表（PDF） - RF Micro Devices

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RF2368PCBA

DCS/PCS 2.7V LOW NOISE AMPLIFIER

RF Micro Devices 

Preliminary

RF2368

Pin Function Description

Interface Schematic

1

BIAS

BIAS is set to the supply voltage at high gain mode. For bypass mode

BIAS

see “Application Notes”.

2

GND

3

IN

DCS1800/PCS1900 RF input pin.

4

GND1

LNA1 emittance inductance. Total inductance is comprised of

package+bondwire+L2 on PCB.

To Bias

Circuit

VCC1

RF IN

4

GND1

5

VCC

Open collector for first stage LNA of DCS1800/PCS1900. It must be

VCC1

biased to VCC through a choke or matching inductor.

GND1

6

GND2

LNA2 emittance inductance. Total inductance is comprised of

package+bondwire+L4 on PCB.

7

OUT

DCS1800 Amplifier Output pin. This pin is an open-collector output. It

must be biased to VCC through a choke or matching inductor. This pin

is typically matched to 50Ω with a shunt bias/matching inductor and

series blocking/matching capacitor. Refer to application schematics.

RF OUT

8

SELECT This pin selects high gain.

Select <0.8V, high gain.

Select >1.8V, low gain.

GND2

SELECT

Rev A0 010503

4-201

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