v02.0118
Typical Applications
The HMC863ALC4 is ideal for:
• Point-to-Point Radios
• Point-to-Multi-Point Radios
• VSAT
9 • Military & Space
Functional Diagram
HMC863ALC4
GaAs pHEMT MMIC 1/2 WATT
POWER AMPLIFIER, 24 - 29.5 GHz
Features
High P1dB Output Power: +27 dBm
High Psat Output Power: +28.5 dBm
High Gain: 24 dB
High Output IP3: +38.5 dBm
Supply Voltage: +5.5 V @ 350 mA
No External Matching Required
24 Lead 4x4 mm SMT Package: 16 mm²
General Description
The HMC863ALC4 is a three stage GaAs pHEMT
MMIC 1/2 Watt Power Amplifier which operates
between 24 and 29.5 GHz. The HMC863ALC4 pro-
vides 24 dB of gain, +28.5 dBm of saturated output
power and 22.5% PAE from a +5.5V supply. High
output IP3 makes the HMC863ALC4 ideal for point-to-
point and point-to-multi-point radio systems as well as
VSAT applications. The RF I/Os are DC blocked and
matched to 50 Ohms for ease of integration into higher
level assemblies. The HMC863ALC4 can be operated
over a Vdd range of +4.0 to +6.0V.
9-1
Electrical Specifications, TA = +25° C, Vdd = +5.5 V, Idd = 350 mA*
Parameter
Min.
Typ. Max. Min
Typ
Frequency Range
24 - 29
29 - 29.5
Gain
20.5
24
24
Gain Flatness
2 1.5
Gain Variation Over Temperature
0.03
0.03
Input Return Loss
8 17.5
Output Return Loss
13 15
Output Power for 1 dB Compression (P1dB)
24.5
27
27
Saturated Output Power (Psat)
28.5
28.5
Output Third Order Intercept (IP3)
*Pout/Tone = + 14 dBm
38.5
37.5
Noise Figure
4.5 6
5
Supply Current (Idd)
350 350
Supply Voltage (Vdd)
4 5.5 6 4
5.5
* Adjust Vgg1 between -2 to 0 V to achieve IDD = 350 mA; Typical Vgg1 = -0.75 V.
Max
6
Units
GHz
dB
dB
dB/ °C
dB
dB
dBm
dBm
dBm
dB
mA
V
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