MC13109
ELECTRICAL CHARACTERISTICS (continued)
FM Receiver
The FM receivers can be used with either a quad coil or a
ceramic resonator. The FM receiver and 1st LO have been
designed to work for all country channels, including 25
channel U.S., without the need for any external switching
circuitry (see Figure 29).
(Test Conditions: VCC = 2.6 V, TA = 25°C, fO = 46.61 MHz, fDEV = ± 3.0 kHz, fmod = 1.0 kHz.)
Characteristic
Condition
Input Measure
Pin
Pin
Symbol
Min
Typ
Max
Unit
Sensitivity (Input for 12 Matched Impedance
Mix1
Det Out
VSIN
–
0.7
dB SINAD)
Differential Input
In1/2
1st Mixer Conversion
Vin = 1.0 mVrms, with
Mix1
CF1
MXgain1
–
10
Gain
CF1 Load
In1/2
2nd Mixer Conversion Vin = 3.0 mVrms, with Mix2 In
CF2
MXgain2
–
20
Gain
CF2 Load
1st and 2nd Mixer Gain Vin = 1.0 mVrms, with
Mix1
CF2
MXgainT
24
30
Total
CF1 and CF2 Load
In1/2
1st Mixer Input
Impedance
–
–
Mix1 In1
Zin1
–
1.0
Mix1 In2
2nd Mixer Input
Impedance
–
–
Mix2 In
Zin2
–
3.0
–
µVrms
–
dB
–
dB
–
dB
–
kΩ
–
kΩ
1st Mixer Output
Impedance
–
–
Mix1 Out Zout1
–
330
–
Ω
2nd Mixer Output
Impedance
–
–
Mix2 Out Zout2
–
1.5
–
kΩ
IF –ā3.0 dB Limiting
Sensitivity
fin = 455 kHz
Lim In Det Out IF Sens
–
55
–
µVrms
Total Harmonic Distortion With RC = 8.2 kΩ/
Mix1 Det Out
THD
–
0.7
–
%
(CCITT Filter)
0.01 µF Filter at Det
In1/2
Out
Recovered Audio
With RC = 8.2 kΩ/
Mix1 Det Out
AFO
80
0.01 µF Filter at Det
In1/2
Out
100
154
mVrms
Demodulator Bandwidth
–
Lim In Det Out
BW
–
20
–
kHz
Signal to Noise Ratio
Vin = 10 mVrms,
Mix1 Det Out
SN
–
49
–
dB
RC = 8.2 kΩ/0.01 µF
In1/2
AM Rejection Ratio
30% AM, Vin =
Mix1 Det Out
AMR
–
37
–
dB
10 mVrms,
In1/2
RC = 8.2 kΩ/0.001 µF
First Mixer 3rd Order
Matched Impedance
Mix1 Mix1 Out TOImix1
–
–10
–
dBm
Intercept (Input
Input
In1/2
Referred)
Second Mixer 3rd
Matched Impedance
Mix2 In Mix2 Out TOImix2
–
– 27
–
dBm
Order Intercept (Input Input
Referred)
Detector Output
Impedance
–
–
Det Out
ZO
–
870
–
Ω
MOTOROLA ANALOG IC DEVICE DATA
5