UPC8001 NEC, UPC8001 Datasheet - Page 11

• Manufacturer Part Number: UPC8001
• Description: IF AMPLIFIER IC WITH ON-CHIP MIXER FOR DIGITAL CELLULAR PHONES
• Manufacturer: NEC

Note The values L and C are affected by the parasitic capacitance and inductance of the board. Therefore,
Remark The signal source impedance is 50 .
Remark Signal source impedance is 50 .
f
1
adjust L and C so that the impedance at the MIX IN pin from the signal source equals 50 .
= 130.1 MHz, f
16.7
16.7
V
MIX IN
f
MIX IN1
1
14
2
(a) 50
0.01 F
= 130.2 MHz
50
f
2
50
16.7
0.01 F
Termination
Figure 3-2. Third Order Intercept
Measure 455 kHz component
level with spectrum analyzer
14 MIX IN1
Figure 3-1.
MIX OUT
9
1.5 k
0.01 F
Mixer Input
6 dB/OCT
18 dB/OCT
V
MIX IN
5 pF
OSC IN
(b) LC Matching
Note
11
0.01 F
f
107 nH
OSC IN
50
0.01 F
= 129.545 MHz
Third order intercept
Note
V
OSC IN
14
= –15 dBm
f
f
1
2
MIX IN1
= 130.1 MHz
= 130.2 MHz
V
MIX IN
f = 130 MHz
PC8001
[dBm]
11