RF2173PCBA-41X Просмотр технического описания (PDF) - RF Micro Devices

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RF2173PCBA-41X

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RF Micro Devices 

RF2173

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Pkg

Base

Function

GND

GND2

RF IN

GND1

VCC1

APC1

APC2

VCC

GND

RF OUT

RF OUT

RF OUT

2F0

NC

VCC2

VCC2

GND

Description

Interface Schematic

Internally connected to the ground slug.

Ground connection for the driver stage. To minimize the noise power at the

output, it is recommended to connect this pin with a trace of about 40mil

to the ground plane. This will slightly reduce the small signal gain, and

lower the noise power. It is important for stability that this pin have it’s own

vias to the ground plane, minimizing common inductance.

See pin 15.

RF Input. This is a 50Ω input, but the actual impedance depends on the

interstage matching network connected to pin 5. An external DC blocking

capacitor is required if this port is connected to a DC path to ground or a

DC voltage.

VCC1

RF IN

From Bias

Stages GND1

Ground connection for the pre-amplifier stage. Keep traces physically short

and connect immediately to the ground plane for best performance. It is

important for stability that this pin has it’s own vias to the groundplane, to

minimize any common inductance.

See pin 3.

Power supply for the pre-amplifier stage and interstage matching. This pin

forms the shunt inductance needed for proper tuning of the interstage

match. Refer to the application schematic for proper configuration. Note

that position and value of the components are important.

See pin 3.

Power Control for the driver stage and pre-amplifier. When this pin is "low,"

all circuits are shut off. A "low" is typically 0.5V or less at room tempera-

ture. A shunt bypass capacitor is required. During normal operation this pin

is the power control. Control range varies from about 1.0V for -10dBm to

2.6V for +35dBm RF output power. The maximum power that can be

achieved depends on the actual output matching; see the application infor-

mation for more details. The maximum current into this pin is 5mA when

VAPC1=2.6V, and 0mA when VAPC=0V.

APC VCC

To RF

Stages

GND

Power Control for the output stage. See pin 6 for more details.

GND

See pin 6.

Power supply for the bias circuits.

See pin 6.

Internally connected to the ground slug.

RF Output and power supply for the output stage. Bias voltage for the final

stage is provided through this wide output pin. An external matching net-

work is required to provide the optimum load impedance.

RF OUT

From Bias

Stages GND

PCKG BAS

Same as pin 10.

Same as pin 10.

Same as pin 10.

Same as pin 10.

Connection for the second harmonic trap. This pin is internally connected

to the RF OUT pins. The bonding wire together with an external capacitor

form a series resonator that should be tuned to the second harmonic fre-

quency in order to increase efficiency and reduce spurious outputs.

Not connected.

Same as pin 10.

Power supply for the driver stage and interstage matching. This pin forms

the shunt inductance needed for proper tuning of the interstage match.

Please refer to the application schematic for proper configuration, and

note that position and value of the components are important.

Same as pin 15.

VCC2

From Bias

Stages GND2

Same as pin 15.

Ground connection for the output stage. This pad should be connected to

the ground plane by vias directly under the device. A short path is required

to obtain optimum performance, as well as to provide a good thermal path

to the PCB for maximum heat dissipation.

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7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.

Rev A8 DS070730

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