ML13135
LANSDALE Semiconductor, Inc.
Figure 8. Op Amp Gain and Phase
versus Frequency
Figure 9. First Mixer Third Order Intermodulation
(Unmatched Input)
50
30
80
20
0
120
160
200
Phase
Gain
– 20
– 40
– 60
– 80
–100
10
0
Desired Products
3rd Order
–10
– 30
– 50
Intermod
Products
240
280
10 k
100 k
1.0 M
f, FREQUENCY (Hz)
10 M
–100
– 80
– 60
– 40
– 20
0
RF INPUT (dBm)
Figure 10. Recovered Audio versus
Figure 11. Distortion versus
Deviation for ML13135
Deviation for ML13135
2000
1500
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
V
V
CC
CC
R = 68 kΩ
R = 68 k
Ω
Ω
Ω
R
R
13
13
455 kHz
Quad Coil
Toko 7MC–8128Z
455 kHz
Quad Coil
Toko 7MC–8128Z
R = 47 k
R = 39 k
R = 47 kΩ
1000
500
0
R = 39 kΩ
1.0
3.0
5.0
, DEVIATION (kHz)
7.0
9.0
1.0
3.0
5.0
, DEVIATION (kHz)
7.0
9.0
f
f
DEV
DEV
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