mga-31189 Avago Technologies, mga-31189 Datasheet - Page 9

• Manufacturer Part Number: mga-31189
• Description: 70 To 500 Mhz Ampliier For If Applications Using The Avago Technologies Mga-31189 Ampliier
• Manufacturer: Avago Technologies

Performance of the MGA-31189 at 170 MHz
At 170 MHz, the MGA-31189 delivers a small signal gain
of 21.2 dB, as shown in Figure 17, and an excellent IRL of
-17.2 dB, as shown in Figure 16. On the other hand, the ORL
is about -10.4 dB at 170 MHz. Figure 18 shows the MGA-
31189’s reverse isolation is about -27.9 dB at 170 MHz. The
MGA-31189 NF was measured to be about 2.5 dB at 170
MHz. As for linearity performance, the MGA-31189 exhibits
41dBm of OIP3 and 23.1 dBm of OP1dB at 170 MHz. Table
7 shows the MGA-31189’s performance at 170 MHz.
Figure 16. Input and output return loss
Figure 18. Reverse isolation
9
-10
-12
-14
-16
-18
-20
-22
-24
-24
-25
-26
-27
-28
-29
-30
-31
-32
-6
-8
150
150
155
155
160
160
165
165
Frequency (MHz)
Frequency (MHz)
170
170
RED = Input Return Loss
BLUE = Output Return Loss
175
175
180
180
185
185
190
190
Table 7. MGA-31189 performance summary at 170 MHz
Figure 17. Small signal gain
Parameter
Frequency
Input Return Loss (IRL)
Small Signal Gain (SSGain)
Reverse Isolation (ISO)
Output Return Loss (ORL)
Noise Figure (NF)
Third-Order Intercept Point (OIP3)
1 dB Gain Compression Point (OP1dB)
22.0
21.5
21.0
20.5
20.0
19.5
150
155
160
165
F requency (MHz)
170
175
Performance Unit
170
-17.2
21.2
-27.9
-10.4
2.5
41.0
23.1
180
185
MHz
dB
dB
dB
dB
dB
dBm
dBm
190