QPA7489A
RFMD + TriQuint = Qorvo
Component Values For Specific Frequency and Voltage in Application Circuit
Frequency (MHz)
Reference
Designator
100
1000pF
100pF
470nH
500
220pF
100pF
68nH
850
100pF
68pF
33nH
1950
68pF
22pF
22nH
2400
56pF
22pF
18nH
C4, C5
C3
L1
Required Bias Resistance for ID =118mA
Bias Resistance = RBIAS + RLDC = ( VS -VD ) / ID
Supply Voltage (VS)
7 V
8 V
9 V
12 V
Bias Resistance (R1 = RBias
)
17 Ω
26 Ω
35 Ω
61 Ω
*Note: Bias resistor improves current stability over temperature
Pin Configuration and Description
Pin
Label
Description
RF input pin. This pin requires the use of an external DC blocking capacitor as shown in
the application schematics
1
2
3
RF IN
G
ND
Connect to ground per application circuit drawing.
RF output and bias pin. Bias will be supplied to this pin through an external RF choke. A DC
blocking capacitor is necessary on the RF output as shown in the application circuit
RF OUT
Exposed area on the bottom side of the package needs to be soldered to the ground plane
of the board for thermal and RF performance. Vias should be located under the EPAD as
shown in the recommended land pattern.
4
GND
Revision DS20160202
Disclaimer: Subject to change without notice
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RFMD [ RF MICRO DEVICES ]
