MC13055
Wideband FSK Receiver
The MC13055 is intended fo RF data link systems using carrier
frequencies up to 40 MHz and FSK (frequency shift keying) data rates up to
2.0 M Baud (1.0 MHz). This design is similar to the MC3356, except that it
does not include the oscillator/mixer. The IF bandwidth has been increased
and the detector output has been revised to a balanced configuration. The
received signal strength metering circuit has been retained, as has the
versatile data slicer/comparator.
•
Input Sensitivity 20
µV
@ 40 MHz
WIDEBAND
FSK
RECEIVER
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
Signal Strength Indicator Linear Over 3 Decades
Available in Surface Mount Package
Easy Application, Few Peripheral Components
P SUFFIX
PLASTIC PACKAGE
CASE 648
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
PIN CONNECTIONS
Figure 1. Block Diagram and Application Circuit
Comparator Gnd
VCC
0.01
1
2
3
40MHz
IF
Input
(50Ω)
L1
0.01
4
22pF
27pF
0.1
0.01
8 VCC
1.0k
39pF
5
6
7
0.8V
–
+
+
–
16
15
14
13 100pF
12
Limiter
11
10
9
3.9k
Device
MC13055D
L2
MC13055P
5.0k
68pF
3.9k
Squelch
Adjust
(meter)
Quad Bias
Data
Output
Comparator VCC
IF Ground
IF VCC
Limiter Input
Carrier
Detect
Limiter Bias
7
8
10
9
1
2
3
4
5
6
16
+ 15
Data Out
Comparator
– 14
13
12
11
Carrier Detect
Meter Drive
Detector
Out
Quad Input
ORDERING INFORMATION
Operating
Temperature Range
TA = – 40 to +85°C
Package
SO–16
Plastic DIP
MOTOROLA ANALOG IC DEVICE DATA
8–121
MC13055
MAXIMUM RATINGS
Rating
Power Supply Voltage
Operating Supply Voltage Range
Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
Power Dissipation, Package Rating
Symbol
VCC(max)
V2, V4
TJ
TA
Tstg
PD
Value
15
3.0 to 12
150
–40 to +85
–65 to +150
1.25
Unit
Vdc
Vdc
°C
°C
°C
W
ELECTRICAL CHARACTERISTICS
(VCC = 5.0 Vdc, fo = 40 MHz, fmod = 1.0 MHz,
∆f
=
±1.0
MHz, TA = 25°C, test circuit of Figure 2.)
Characteristic
Total Drain Current
Data Comparator Pull–Down Current
Meter Drive Slope versus Input
Carrier Detect Pull–Down Current
Carrier Detect Pull–Up Current
Carrier Detect Threshold Voltage
DC Output Current
Recovered Signal
Sensitivity for 20 dB S + N/N, BW = 5.0 MHz
S + N/N at Vin = 50
µV
Input Impedance @ 40 MHz
Quadrature Coil Loading
Rin
Cin
Rin
Cin
Conditions
12 + 14
I16
I12
I13
I13
V12
I10, I11
V10 – V11
VIN
V10 – V11
Pin 5, Ground
Pin 9 to 8
Min
–
–
4.5
–
–
690
–
–
–
–
–
–
–
–
Typ
20
10
7.0
1.3
500
800
430
350
20
30
4.2
4.5
7.6
5.2
Max
25
–
9.0
–
–
1010
–
–
–
–
–
–
–
–
Unit
mA
mA
µA/dB
mA
µA
mV
µA
mVrms
µVrms
dB
kΩ
pF
kΩ
pF
Figure 2. Test Circuit
1
0.01
VCC
0.01
4
22pF
Input
L1
27pF
6
0.1
7
0.01
0.01
8
1.0k
39pF
Coils – Shielded
Coilcraft UNI–10/142
L1 Gray 8–1/2 Turns, nominal 300 nH
L2 Black 10–1/2 Turns, nominal 380 nH
9
3.9k
3.9k
10
5
13
12
Meter Drive
11
Detector
Output
Carrier
Detect Output
2
3
14
100pF
16
15
L2
8–122
MOTOROLA ANALOG IC DEVICE DATA
MC13055
Figure 3. Overall Gain, Noise, AM Rejection
0
RELATIVE OUTPUT (dB)
–10
–20
–30
–40
–50
–60
–100
–80
–60
–40
SIGNAL INPUT (dBm)
–20
0
0
–100
–80
–60
–40
INPUT SIGNAL (dBm)
–20
0
AMR 1.0 kHz
30%
Noise
l12, METER CURRENT (
µ
A)
Output fmod = 1.0 MHz
∆f
= 1.0 MHz
600
500
400
300
200
100
VCC = 5.0 V, 7.0 V
3.0 V
12 V
Figure 4. Meter Current versus Signal
Figure 5. Untuned Input: Limiting Sensitivity
versus Frequency
VIN, INPUT LIMITING SENSITIVITY (dBm)
0
–10
–20
–30
0.1
Figure 6. Untuned Input: Meter Current
versus Frequency
800
0.1
Input 0 dBm
–10
–20
0.1
Input
51
0.1
Input
51
l12, METER CURRENT (
µ
Adc)
5
MC13055
7
9
20k
8
700
600
500
400
300
200
100
5
MC13055
7
9
20k
8
–40
–50
–60
–70
–80
–90
–100
0
10
20
30 40
50
60
70
f, INPUT FREQUENCY (MHz)
80
90
100
–30
–40
–50
–60
–70
–80
0
0
10
20
30
40 50
60
70
f, INPUT FREQUENCY (MHz)
80
90
100
Figure 7. Limiting Sensitivity and Detuning
versus Supply Voltage
VIN, INPUT LIMITING SENSITIVITY (dBm)
l10 + l11, DETECTOR CURRENT (
µ
Adc)
–40
–50
–60
–70
–80
–90
0 1.0
3.0
5.0
7.0
9.0
11
VCC, SUPPLY VOLTAGE (Vdc)
13
15
Limiting
Sensitivity
40 MHz
Quadrature
Coil Tuning
40 3
40.2
40.1
40.0
39.9
39.8
39.7
39.6
39.5
39.4
39.3
39.2
Figure 8. Detector Current and Power Supply
Current versus Supply Voltage
l2 + I4, POWER SUPPLY CURRENT (mA)
1200
1000
800
600
I2 + I4
400
200
0
0 1.0
3.0
5.0
7.0
9.0
11
VCC, SUPPLY VOLTAGE (Vdc)
13
20
10
0
15
I10 + I11
60
50
40
30
QUAD COIL TUNING (MHz)
MOTOROLA ANALOG IC DEVICE DATA
8–123
MC13055
Figure 10. Carrier Detect Threshold versus
Temperature
V12, CARRIER DETECT THRESHOLD (mV)
–40
–20
0
20
40
60 80 100
TA, AMBIENT TEMPERATURE (°C)
120
140
1000
900
800
700
600
500
–60
Figure 9. Recovered Audio versus Temperature
V10, RELATIVE AUDIO OUTPUT (dB)
4.0
2.0
0
–2.0
–4.0
–6.0
–8.0
–10
–12
–60
–40
–20
0
20 40
60 80 100
TA, AMBIENT TEMPERATURE (°C)
120
140
Figure 11. Meter Current versus Temperature
Input 0 dBm
l12, METER CURRENT (
µ
A)
500
400
300
–50
200
100
–60 –40
–60
–20 0
20 40
60 80 100
TA, AMBIENT TEMPERATURE (°C)
120
140
–10
–20
–30
–40
VIN, INPUT LIMITING SENSITIVITY (dBm)
600
–50
–60
–70
–80
–90
Figure 12. Input Limiting versus Temperature
–60 –40 –20
0
20
40 60 80 100 120
TA, AMBIENT TEMPERATURE (°C)
140
Figure 13. Input Impedance, Pin 5
1.0
Cp = 4p5
0.5
Rp = 4k2
Y = 0.24 + j1.1
0.2
5.0
0
0.2
200M
0.5
1.0
2.0
1.0M
0.2
100M
10M
5.0
50M
30M
0.5
20M
2.0
1.0
8–124
MOTOROLA ANALOG IC DEVICE DATA
MC13055
Figure 14. Test Fixture
(Component Layout)
.01
MC13055
BNC
.01
.3
µH
27P
.1
68P
.01
100P
22P
4
I
3.9K
3.9K
5K
POT
.01
1K
39P
.4
µH
4
I
(Circuit Side View)
INPUT
SQUELCH
CONTROL
MC13055
4
I
MOTOROLA ANALOG IC DEVICE DATA
GND
VCC
DATA OUT
CARRIER
DETECT
METER
DRIVE
DETECTOR OUTPUT
4
I
8–125
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