50
30
10
0
–10
– 30
– 50
10 k
MC13135 MC13136
Figure 8. Op Amp Gain and Phase
versus Frequency
80
120
Phase
Gain
160
200
240
100 k
1.0 M
280
10 M
f, FREQUENCY (Hz)
Figure 9. First Mixer Third Order Intermodulation
(Unmatched Input)
20
0
– 20
– 40
Desired Products
– 60
– 80
3rd Order
Intermod
Products
–100
–100
– 80
– 60
– 40
– 20
0
RF INPUT (dBm)
2000
13
1500
Figure 10. Recovered Audio versus
Deviation for MC13135
VCC
R
455 kHz
Quad Coil
Toko 7MC–8128Z
R = 68 kΩ
R = 47 kΩ
1000
R = 39 kΩ
500
0
±1.0
± 3.0
± 5.0
± 7.0
± 9.0
fDEV, DEVIATION (kHz)
8.0
7.0 13
6.0
5.0
4.0
3.0
2.0
1.0
±1.0
Figure 11. Distortion versus
Deviation for MC13135
VCC
R
455 kHz
Quad Coil
Toko 7MC–8128Z
R = 68 kΩ
R = 47 kΩ
R = 39 kΩ
± 3.0
± 5.0
± 7.0
± 9.0
fDEV, DEVIATION (kHz)
1000
14
800 13
600
Figure 12. Recovered Audio versus
Deviation for MC13136
VCC
muRata
C R 455 kHz
Resonator
CDB455C34
R = 2.7 kΩ
C = 270 pF
R=∞
C = 660 pF
400
200
R = 1.2 kΩ
C = 100 pF
0
± 3.0 ± 4.0 ± 5.0 ± 6.0 ± 7.0 ± 8.0 ± 9.0
fDEV, DEVIATION (kHz)
10
14
8.0 13
6.0
Figure 13. Distortion versus
Deviation for MC13136
VCC
CR
muRata
455 kHz
Resonator
CDB455C34
R=∞
C = 660 pF
4.0
R = 2.7 kΩ
C = 270 pF
2.0
R = 1.2 kΩ
C = 100 pF
0
± 3.0 ± 4.0 ± 5.0 ± 6.0 ± 7.0 ± 8.0 ± 9.0
fDEV, DEVIATION (kHz)
MOTOROLA ANALOG IC DEVICE DATA
5