MOTOROLA MC13155 Wideband fm if Datasheet

Freescale Semiconductor, Inc.Order this document by MC13155/D
The MC13155 is a complete wideband FM detector designed for satellite
TV and other wideband data and analog FM applications. This device may
be cascaded for higher IF gain and extended Receive Signal Strength
Indicator (RSSI) range.
• 12 MHz Video/Baseband Demodulator
Ideal for Wideband Data and Analog FM Systems
Limiter Output for Cascade Operation
SEMICONDUCTOR
TECHNICAL DATA
Low Drain Current: 7.0 mA
Low Supply Voltage: 3.0 to 6.0 V
Operates to 300 MHz
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•
•
•
•
•
WIDEBAND FM IF
MAXIMUM RATINGS
16
Rating
Pin
Symbol
Value
Unit
Power Supply Voltage
11, 14
VEE (max)
6.5
Vdc
Input Voltage
1, 16
Vin
1.0
Vrms
Junction Temperature
–
TJ
+150
°C
Storage Temperature Range
–
Tstg
– 65 to +150
°C
NOTE:
1
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
Devices should not be operated at or outside these values. The “Recommended
Operating Conditions” provide for actual device operation.
PIN CONNECTIONS
Figure 1. Representative Block Diagram
Buffered
RSSI
Decouple Output
15
13
RSSI
Output
12
1
16
Input
Decouple
2
15
Decouple
VCC1
3
14
VEE1
Output
4
13
RSSI Buffer
Output
5
12
RSSI
VCC2
6
11
VEE2
Limiter Out
7
10
Limiter Out
Quad Coil
8
9
Quad Coil
Limiter
Output
10
16
9
Input
1
Input
Three Stage
Amplifier
Quad
Coil
Detector
Input
8
2
Decouple
4
Balanced
Outputs
5
(Top View)
7
Limiter
Output
NOTE: This device requires careful layout and decoupling to ensure stable operation.
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC13155D
TA = – 40 to +85°C
SO–16
 Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICEFor
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Rev 1
1
Freescale Semiconductor,
Inc.
MC13155
RECOMMENDED OPERATING CONDITIONS
Rating
Pin
Symbol
Value
Unit
Power Supply Voltage (TA= 25°C)
– 40°C ≤ TA ≤ 85°C
11, 14
3, 6
VEE
VCC
– 3.0 to – 6.0
Grounded
Vdc
Maximum Input Frequency
1, 16
fin
300
MHz
–
TJ
– 40 to + 85
°C
Ambient Temperature Range
Characteristic
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Drain Current
(VEE = – 5.0 Vdc)
(VEE = – 5.0 Vdc)
Drain Current Total (see Figure 3)
(VEE = – 5.0 Vdc)
(VEE = – 6.0 Vdc)
(VEE = – 3.0 Vdc)
Pin
Symbol
Min
Typ
Max
Unit
11
14
14
I11
I14
I14
2.0
3.0
3.0
2.8
4.3
4.3
4.0
6.0
6.0
mA
11, 14
ITotal
5.0
5.0
5.0
4.7
7.1
7.5
7.5
6.6
10
10.5
10.5
9.5
mA
AC ELECTRICAL CHARACTERISTICS (TA = 25°C, fIF = 70 MHz, VEE = – 5.0 Vdc Figure 2, unless otherwise noted.)
Pin
Min
Typ
Max
Unit
Input for – 3 dB Limiting Sensitivity
1, 16
–
1.0
2.0
mVrms
Differential Detector Output Voltage (Vin = 10 mVrms)
(fdev = ± 3.0 MHz) (VEE = – 6.0 Vdc)
(VEE = – 5.0 Vdc)
(VEE = – 3.0 Vdc)
4, 5
470
450
380
590
570
500
700
680
620
Detector DC Offset Voltage
4, 5
– 250
–
250
mVdc
RSSI Slope
13
1.4
2.1
2.8
µA/dB
RSSI Dynamic Range
13
31
35
39
dB
RSSI Output
(Vin = 100 µVrms)
(Vin = 1.0 mVrms)
(Vin = 10 mVrms)
(Vin = 100 mVrms)
(Vin = 500 mVrms)
12
–
–
16
–
–
2.1
2.4
24
65
75
–
–
36
–
–
RSSI Buffer Maximum Output Current (Vin = 10 mVrms)
13
–
2.3
–
Differential Limiter Output
(Vin = 1.0 mVrms)
(Vin = 10 mVrms)
7, 10
100
–
140
180
–
–
Demodulator Video 3.0 dB Bandwidth
4, 5
–
12
–
MHz
Input Impedance (Figure 14)
@ 70 MHz Rp (VEE = – 5.0 Vdc)
@ 70 MHz Cp (C2=C15 = 100 p)
1, 16
–
–
450
4.8
–
–
Ω
pF
–
46
–
dB
Characteristic
2
µA
mAdc
mVrms
Differential IF Power Gain
NOTE:
mVp–p
1, 7, 10, 16
Positive currents are out of the pins of the device.
MOTOROLA ANALOG IC DEVICE DATA
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DC ELECTRICAL CHARACTERISTICS (TA = 25°C, no input signal.)
Freescale Semiconductor,
Inc.
MC13155
CIRCUIT DESCRIPTION
The MC13155 consists of a wideband three–stage limiting
amplifier, a wideband quadrature detector which may be
operated up to 200 MHz, and a received signal strength
indicator (RSSI) circuit which provides a current output
linearly proportional to the IF input signal level for
approximately 35 dB range of input level.
Figure 2. Test Circuit
1.0n
Vin
Video
Output
27
IN2 16
10n
2 DEC1
DEC2 15
3 VCC1
VEE1 14
4 DETO1
RSSI 13
Buffer
5 DETO2
RSSI 12
6 VCC2
VEE2 11
100n
1.0n
10µ
VEE
+
1.0k
Limiter 1
Output
7 LIMO1
330
VEE
1.0n
100n
1.0n
1.0n
VEE
+
330
QUAD2 9
8 QUAD1
10µ
Limiter 2
Output
LIMO2 10
1.0n
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49.9
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1.0n
1 IN1
499
20p
L1
L1 – Coilcraft part number 146–09J08S
260n
APPLICATIONS INFORMATION
Evaluation PC Board
The evaluation PCB shown in Figures 19 and 20 is very
versatile and is designed to cascade two ICs. The center
section of the board provides an area for attaching all surface
mount components to the circuit side and radial leaded
components to the component ground side of the PCB (see
Figures 17 and 18). Additionally, the peripheral area
surrounding the RF core provides pads to add supporting
and interface circuitry as a particular application dictates.
This evaluation board will be discussed and referenced in
this section.
Limiting Amplifier
Differential input and output ports interfacing the three
stage limiting amplifier provide a differential power gain of
typically 46 dB and useable frequency range of 300 MHz.
The IF gain flatness may be controlled by decoupling of the
internal feedback network at Pins 2 and 15.
Scattering parameter (S–parameter) characterization of
the IF as a two port linear amplifier is useful to implement
maximum stable power gain, input matching, and stability
over a desired bandpass response and to ensure stable
operation outside the bandpass as well. The MC13155 is
unconditionally stable over most of its useful operating
frequency range; however, it can be made unconditionally
stable over its entire operating range with the proper
decoupling of Pins 2 and 15. Relatively small decoupling
capacitors of about 100 pF have a significant effect on the
wideband response and stability. This is shown in the
scattering parameter tables where S–parameters are shown
for various values of C2 and C15 and at VEE of – 3.0 and
– 5.0 Vdc.
MOTOROLA ANALOG IC DEVICEFor
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MC13155
TYPICAL PERFORMANCE AT TEMPERATURE
(See Figure 2. Test Circuit)
Figure 4. RSSI Output versus Frequency and
Input Signal Level
10
ITotal = I14 + I11
6.0
I14
4.0
– 30 dBm
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
Figure 5. Total Drain Current versus Ambient
Temperature and Supply Voltage
Figure 6. Detector Drain Current and Limiter
Drain Current versus Ambient Temperature
– 5.0 Vdc
VEE = – 6.0 Vdc
8.0
7.5
7.0
– 3.0 Vdc
6.5
6.0
5.5
– 30
–10
10
30
50
70
90
I 14 and I 11, DRAIN CURRENT (mAdc)
5.5
8.5
5.0
f = 70 MHz
VEE = – 5.0 Vdc
I14
4.5
4.0
3.5
I11
3.0
2.5
2.0
– 50
110
– 30
–10
10
30
50
70
90
TA, AMBIENT TEMPERATURE (°C)
TA, AMBIENT TEMPERATURE (°C)
Figure 7. RSSI Output versus Ambient
Temperature and Supply Voltage
Figure 8. RSSI Output versus Input Signal
Voltage (Vin at Temperature)
110
100
VEE = – 6.0 Vdc
24.0
23.5
VEE = – 5.0 Vdc
22.5
I
VEE = – 3.0 Vdc
22.0
– 30
–10
10
30
50
70
TA, AMBIENT TEMPERATURE (°C)
90
TA = + 85°C
80
+ 25°C
60
– 40°C
40
12
23.0
21.5
– 50
1000
f, FREQUENCY (MHz)
9.0
5.0
– 50
100
VEE, SUPPLY VOLTAGE (–Vdc)
110
20
0
0.1
1.0
10
100
1000
Vin, INPUT VOLTAGE (mVrms)
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– 40 dBm
0
10
, RSSI OUTPUT ( µ A)
, RSSI OUTPUT ( µ A)
– 20 dBm
40
20
24.5
12
–10 dBm
60
2.0
25.0
4
VEE = – 5.0Vdc
0 dBm
80
I 12 , RSSI OUTPUT ( µ A)
8.0
0.0
0.0
I 11 and I 14 , TOTAL DRAIN CURRENT (mAdc)
100
TA = 25°C
I
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I14 and I Total, DRAIN CURRENT (mAdc)
Figure 3. Drain Current versus Supply Voltage
VEE = – 6.0 Vdc
700
– 5.0 Vdc
650
– 3.0 Vdc
600
550
500
450
400
350
– 50
– 30
–10
10
30
50
70
90
110
220
f = 70 MHz
VEE = – 5.0 Vdc
200
180
160
Vin = 1.0 mVrms
140
120
– 50
– 30
–10
f dev = ± 6.0 MHz
± 5.0 MHz
± 4.0 MHz
800
± 3.0 MHz
600
± 2.0 MHz
400
± 1.0 MHz
200
2.0
2.5
3.0
3.5
4.0
4.5
30
50
70
90
Figure 11B. Differential Detector Output Voltage
versus Q of Quadrature LC Tank
DIFFERENTIAL DETECTOR OUTPUT (mVpp )
DIFFERENTIAL DETECTOR OUTPUT (mVpp )
1600
0
1.5
10
TA, AMBIENT TEMPERATURE (°C)
Figure 11A. Differential Detector Output Voltage
versus Q of Quadrature LC Tank
Vin = – 30 dBm
1400 VEE = – 5.0 Vdc
fc = 70 MHz
1200 fmod = 1.0 MHz
(Figure 16 no external capacitors
1000 between Pins 7, 8 and 9, 10)
Vin = 10 mVrms
5.0
5.5
6.0
2400
Vin = – 30 dBm
VEE = – 5.0 Vdc
2000 fc = 70 MHz
fmod = 1.0 MHz
1600 (Figure 16 no external capacitors
between Pins 7, 8 and 9, 10)
f dev = ± 6.0 MHz
± 5.0 MHz
± 4.0 MHz
1200
± 3.0 MHz
800
± 2.0 MHz
400
± 1.0 MHz
0
1.5
2.0
2.5
Q OF QUADRATURE LC TANK
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Q OF QUADRATURE LC TANK
Figure 11.
Figure 13. – S+N, N versus IF Input
Figure 12. RSSI Output Voltage versus IF Input
0
– 1.0
VEE = – 5.0 Vdc
fc = 70 MHz
(See Figure 16)
10
Capacitively coupled
interstage: no attenuation
S+N
0
–10
15 dB Interstage
Attenuator
– 3.0
– 4.0
S+N, N (dB)
– 2.0
– 20
– 30
– 40
– 50
– 5.0
– 80
– 60
– 60
– 40
– 20
0
20
– 70
– 90
fc = 70 MHz
fmod = 1.0 MHz
fdev = ± 5.0 MHz
VEE = – 5.0 Vdc
– 70
IF INPUT, (dBm)
N
– 50
– 30
–10
10
IF INPUT (dBm)
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750
Figure 10. Differential Limiter Output Voltage
versus Ambient Temperature
(Vin = 1 and 10 mVrms)
DIFFERENTIAL LIMITER OUTPUT VOLTAGE
(Pins 7, 10), (mVrms)
Figure 9. Differential Detector Output
Voltage versus Ambient Temperature
and Supply Voltage
TA, AMBIENT TEMPERATURE (°C)
RSSI OUTPUT VOLTAGE, (Vdc)
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DIFFERENTIAL DETECTOR OUTPUT VOLTAGE
(Pins 4, 5), (mVpp )
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Inc.
MC13155
5
Freescale Semiconductor,
Inc.
MC13155
In the S–parameters measurements, the IF is treated as a
two–port linear class A amplifier. The IF amplifier is
measured with a single–ended input and output configuration
in which the Pins 16 and 7 are terminated in the series
combination of a 47 Ω resistor and a 10 nF capacitor to VCC
ground (see Figure 14. S–Parameter Test Circuit).
The S–parameters are in polar form as the magnitude
(MAG) and angle (ANG). Also listed in the tables are the
calculated values for the stability factor (K) and the Maximum
Available Gain (MAG). These terms are related in the
following equations:
K = (1– IS11 I2 – I S22 I2 + I ∆ I2 ) / ( 2 I S12 S21 I )
where: I ∆ I = I S11 S22 – S12 S21 I.
MAG = 10 log I S21 I / I S12 I + 10 log I K – ( K2 – 1)1/2 I
where: K > 1. The necessary and sufficient conditions for
unconditional stability are given as K > 1:
B1 = 1 + I S11 I2 – I S22 I2 – I ∆ I2 > 0
Figure 14. S–Parameter Test Circuit
SMA
1.0n
1.0n
1 IN1
47
IN2 16
C2
C15
2 DEC1
DEC2 15
3 VCC1
VEE1 14
4 DETO1
RSSI 13
Buffer
5 DETO2
RSSI 12
6 VCC2
VEE2 11
7 LIMO1
LIMO2 10
8 QUAD1
QUAD2 9
VEE
1.0n
100n
10µ
+
SMA
1.0n
47
6
1.0n
IF
Output
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IF
Input
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Inc.
MC13155
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Frequency
Input S11
Forward S21
Rev S12
Output S22
K
MAG
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
MAG
dB
1.0
0.94
–13
8.2
143
0.001
7.0
0.87
– 22
2.2
32
2.0
0.78
– 23
23.5
109
0.001
– 40
0.64
– 31
4.2
33.5
5.0
0.48
1.0
39.2
51
0.001
– 97
0.34
–17
8.7
33.7
7.0
0.59
15
40.3
34
0.001
– 41
0.33
–13
10.6
34.6
10
0.75
17
40.9
19
0.001
– 82
0.41
–1.0
5.7
36.7
20
0.95
7.0
42.9
– 6.0
0.001
– 42
0.45
0
1.05
46.4
50
0.98
–10
42.2
– 48
0.001
– 9.0
0.52
– 3.0
0.29
–
70
0.95
–16
39.8
– 68
0.001
112
0.54
–16
1.05
46.4
100
0.93
– 23
44.2
– 93
0.001
80
0.53
– 22
0.76
–
150
0.91
– 34
39.5
–139
0.001
106
0.50
– 34
0.94
–
200
0.87
– 47
34.9
–179
0.002
77
0.42
– 44
0.97
–
500
0.89
–103
11.1
– 58
0.022
57
0.40
–117
0.75
–
700
0.61
–156
3.5
–164
0.03
0
0.52
179
2.6
13.7
900
0.56
162
1.2
92
0.048
– 44
0.47
112
4.7
4.5
1000
0.54
131
0.8
42
0.072
– 48
0.44
76
5.1
0.4
K
MAG
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S–Parameters (VEE = – 5.0 Vdc, TA = 25°C, C2 and C15 = 0 pF)
S–Parameters (VEE = – 5.0 Vdc, TA = 25°C, C2 and C15 = 100 pF)
Frequency
Input S11
Forward S21
Rev S12
Output S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
MAG
dB
1.0
0.98
–15
11.7
174
0.001
–14
0.84
– 27
1.2
37.4
2.0
0.50
– 2.0
39.2
85.5
0.001
–108
0.62
– 35
6.0
35.5
5.0
0.87
8.0
39.9
19
0.001
100
0.47
– 9.0
4.2
39.2
7.0
0.90
5.0
40.4
9.0
0.001
– 40
0.45
– 8.0
3.1
40.3
10
0.92
3.0
41
1.0
0.001
– 40
0.44
– 5.0
2.4
41.8
20
0.92
– 2.0
42.4
–14
0.001
– 87
0.49
– 6.0
2.4
41.9
50
0.91
– 8.0
41.2
– 45
0.001
85
0.50
– 5.0
2.3
42
70
0.91
–11
39.1
– 63
0.001
76
0.52
– 4.0
2.2
41.6
100
0.91
–15
43.4
– 84
0.001
85
0.50
–11
1.3
43.6
150
0.90
– 22
38.2
–126
0.001
96
0.43
– 22
1.4
41.8
200
0.86
– 33
35.5
–160
0.002
78
0.43
– 21
1.3
39.4
500
0.80
– 66
8.3
– 9.0
0.012
75
0.57
– 63
1.7
23.5
700
0.62
– 96
2.9
– 95
0.013
50
0.49
–111
6.3
12.5
900
0.56
–120
1.0
–171
0.020
53
0.44
–150
13.3
2.8
1000
0.54
–136
0.69
154
0.034
65
0.44
–179
12.5
– 0.8
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Frequency
Input S11
Forward S21
Rev S12
Output S22
K
MAG
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
MAG
dB
1.0
0.74
4.0
53.6
110
0.001
101
0.97
– 35
0.58
–
2.0
0.90
3.0
70.8
55
0.001
60
0.68
– 34
1.4
45.6
5.0
0.91
0
87.1
21
0.001
–121
0.33
– 60
1.1
49
7.0
0.91
0
90.3
11
0.001
–18
0.25
– 67
1.2
48.4
10
0.91
– 2.0
92.4
2.0
0.001
33
0.14
– 67
1.5
47.5
20
0.91
– 4.0
95.5
–16
0.001
63
0.12
–15
1.3
48.2
50
0.90
– 8.0
89.7
– 50
0.001
– 43
0.24
26
1.8
46.5
70
0.90
–10
82.6
–70
0.001
92
0.33
21
1.4
47.4
100
0.91
–14
77.12
–93
0.001
23
0.42
–1.0
1.05
49
150
0.94
– 20
62.0
–122
0.001
96
0.42
– 22
0.54
–
200
0.95
– 33
56.9
–148
0.003
146
0.33
– 62
0.75
–
500
0.82
– 63
12.3
–12
0.007
79
0.44
– 67
1.8
26.9
700
0.66
– 98
3.8
–107
0.014
84
0.40
–115
4.8
14.6
900
0.56
–122
1.3
177
0.028
78
0.39
–166
8.0
4.7
1000
0.54
–139
0.87
141
0.048
76
0.41
165
7.4
0.96
K
MAG
S–Parameters (VEE = – 3.0 Vdc, TA = 25°C, C2 and C15 = 0 pF)
Frequency
8
Input S11
Forward S21
Rev S12
Output S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
MAG
dB
1.0
0.89
–14
9.3
136
0.001
2.0
0.84
– 27
3.2
30.7
2.0
0.76
– 22
24.2
105
0.001
– 90
0.67
– 37
3.5
34.3
5.0
0.52
5.0
35.7
46
0.001
– 32
0.40
–13
10.6
33.3
7.0
0.59
12
38.1
34
0.001
– 41
0.40
–10
9.1
34.6
10
0.78
15
37.2
16
0.001
– 92
0.40
–1.0
5.7
36.3
20
0.95
5.0
38.2
– 9.0
0.001
47
0.51
– 4.0
0.94
–
50
0.96
–11
39.1
– 50
0.001
–103
0.48
– 6.0
1.4
43.7
70
0.93
–17
36.8
– 71
0.001
– 76
0.52
–13
2.2
41.4
100
0.91
– 25
34.7
– 99
0.001
–152
0.51
–19
3.0
39.0
150
0.86
– 37
33.8
–143
0.001
53
0.49
– 34
1.7
39.1
200
0.81
– 49
27.8
86
0.003
76
0.55
– 56
2.4
35.1
500
0.70
– 93
6.2
– 41
0.015
93
0.40
–110
2.4
19.5
700
0.62
–144
1.9
–133
0.049
56
0.40
–150
3.0
8.25
900
0.39
–176
0.72
125
0.11
–18
0.25
163
5.1
–1.9
1000
0.44
166
0.49
80
0.10
– 52
0.33
127
7.5
– 4.8
ARCHIVE INFORMATION
S–Parameters (VEE = – 5.0 Vdc, TA = 25°C, C2 and C15 = 680 pF)
MOTOROLA ANALOG IC DEVICE DATA
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MC13155
Freescale Semiconductor, Inc...
ARCHIVE INFORMATION
Frequency
Input S11
Forward S21
Rev S12
Output S22
K
MAG
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
MAG
dB
1.0
0.97
–15
11.7
171
0.001
– 4.0
0.84
– 27
1.4
36.8
2.0
0.53
2.0
37.1
80
0.001
– 91
0.57
– 31
6.0
34.8
5.0
0.88
7.0
37.7
18
0.001
– 9.0
0.48
– 7.0
3.4
39.7
7.0
0.90
5.0
37.7
8.0
0.001
–11
0.49
– 7.0
2.3
41
10
0.92
2.0
38.3
1.0
0.001
– 59
0.51
– 9.0
2.0
41.8
20
0.92
– 2.0
39.6
–15
0.001
29
0.48
– 3.0
1.9
42.5
50
0.91
– 8.0
38.5
– 46
0.001
– 21
0.51
– 7.0
2.3
41.4
70
0.91
–11
36.1
– 64
0.001
49
0.50
– 8.0
2.3
40.8
100
0.91
–15
39.6
– 85
0.001
114
0.52
–13
1.7
37.8
150
0.89
– 22
34.4
–128
0.001
120
0.48
– 23
1.6
40.1
200
0.86
– 33
32
–163
0.002
86
0.40
– 26
1.7
37.8
500
0.78
– 64
7.6
–12
0.013
94
0.46
– 71
1.9
22.1
700
0.64
– 98
2.3
–102
0.027
58
0.42
–109
4.1
10.1
900
0.54
–122
0.78
179
0.040
38.6
0.35
–147
10.0
– 0.14
1000
0.53
–136
0.47
144
0.043
23
0.38
–171
15.4
– 4.52
K
MAG
ARCHIVE INFORMATION
S–Parameters (VEE = – 3.0 Vdc, TA = 25°C, C2 and C15 = 100 pF)
S–Parameters (VEE = – 3.0 Vdc, TA = 25°C, C2 and C15 = 680 pF)
Frequency
Input S11
Forward S21
Rev S12
Output S22
MHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
MAG
dB
1.0
0.81
3.0
37
101
0.001
–19
0.90
– 32
1.1
43.5
2.0
0.90
2.0
47.8
52.7
0.001
– 82
0.66
– 39
0.72
–
5.0
0.91
0
58.9
20
0.001
104
0.37
– 56
2.3
44
7.0
0.90
–1
60.3
11
0.001
– 76
0.26
– 55
2.04
44
10
0.91
– 2.0
61.8
3.0
0.001
105
0.18
– 52
2.2
43.9
20
0.91
– 4.0
63.8
– 15
0.001
59
0.11
–13
2.0
44.1
50
0.90
– 8.0
60.0
– 48
0.001
96
0.22
33
2.3
43.7
70
0.90
–11
56.5
– 67
0.001
113
0.29
15
2.3
43.2
100
0.91
–14
52.7
– 91
0.001
177
0.36
5.0
2.0
43
150
0.93
– 21
44.5
–126
0.001
155
0.35
–17
1.8
42.7
200
0.90
– 43
41.2
–162
0.003
144
0.17
– 31
1.6
34.1
500
0.79
– 65
7.3
–13
0.008
80
0.44
– 75
3.0
22
700
0.65
– 97
2.3
–107
0.016
86
0.38
–124
7.1
10.2
900
0.56
–122
0.80
174
0.031
73
0.38
–174
12
0.37
1000
0.55
–139
0.52
137
0.50
71
0.41
157
11.3
– 3.4
MOTOROLA ANALOG IC DEVICEFor
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9
DC Biasing Considerations
The DC biasing scheme utilizes two VCC connections
(Pins 3 and 6) and two VEE connections (Pins 14 and 11).
VEE1 (Pin 14) is connected internally to the IF and RSSI
circuits’ negative supply bus while VEE2 (Pin 11) is connected
internally to the quadrature detector’s negative bus. Under
positive ground operation, this unique configuration offers the
ability to bias the RSSI and IF separately from the quadrature
detector. When two ICs are cascaded as shown in the 70
MHz application circuit and provided by the PCB (see
Figures 17 and 18), the first MC13155 is used without biasing
its quadrature detector, thereby saving approximately 3.0
mA. A total current of 7.0 mA is used to fully bias each IC,
thus the total current in the application circuit is
approximately 11 mA. Both VCC pins are biased by the same
supply. VCC1 (Pin 3) is connected internally to the positive
bus of the first half of the IF limiting amplifier, while VCC2 is
internally connected to the positive bus of the RSSI, the
quadrature detector circuit, and the second half of the IF
limiting amplifier (see Figure 15). This distribution of the VCC
enhances the stability of the IC.
RSSI Circuitry
The RSSI circuitry provides typically 35 dB of linear
dynamic range and its output voltage swing is adjusted by
selection of the resistor from Pin 12 to VEE. The RSSI slope
is typically 2.1 µA/dB ; thus, for a dynamic range of 35 dB, the
current output is approximately 74 µA. A 47 k resistor will
yield an RSSI output voltage swing of 3.5 Vdc. The RSSI
buffer output at Pin 13 is an emitter–follower and needs an
external emitter resistor of 10 k to VEE.
In a cascaded configuration (see circuit application in
Figure 16), only one of the RSSI Buffer outputs (Pin 13) is
used; the RSSI outputs (Pin 12 of each IC) are tied together
and the one closest to the VEE supply trace is decoupled to
VCC ground. The two pins are connected to VEE through a 47
k resistor. This resistor sources a RSSI current which is
proportional to the signal level at the IF input; typically,
1.0 mVrms (– 47 dBm) is required to place the MC13155 into
limiting. The measured RSSI output voltage response of the
application circuit is shown in Figure 12. Since the RSSI
current output is dependent upon the input signal level at the
IF input, a careful accounting of filter losses, matching and
other losses and gains must be made in the entire receiver
system. In the block diagram of the application circuit shown
below, an accounting of the signal levels at points throughout
the system shows how the RSSI response in Figure 12 is
justified.
Block Diagram of 70 MHz Video Receiver Application Circuit
Input
Level:
– 45 dBm
1.26 mVrms
– 70 dBm
71 µVrms
IF
Input
– 72 dBm
57 µVrms
16
Saw
Filter
– 47 dBm
1.0 mVrms
Minimum Input to Acquire
Limiting in MC13155
16
10
MC13155
1:4
Transformer
– 25 dB
2.0 dB
(Insertion Loss)
(Insertion Loss)
MC13155
7
1
Cascading Stages
The limiting IF output is pinned–out differentially,
cascading is easily achieved by AC coupling stage to stage.
In the evaluation PCB, AC coupling is shown, however,
interstage filtering may be desirable in some applications. In
which case, the S–parameters provide a means to implement
a low loss interstage match and better receiver sensitivity.
Where a linear response of the RSSI output is desired
when cascading the ICs, it is necessary to provide at least
10 dB of interstage loss. Figure 12 shows the RSSI response
with and without interstage loss. A 15 dB resistive attenuator
is an inexpensive way to linearize the RSSI response. This
has its drawbacks since it is a wideband noise source that is
dependent upon the source and load impedance and the
amount of attenuation that it provides. A better, although
more costly, solution would be a bandpass filter designed to
the desired center frequency and bandpass response while
carefully selecting the insertion loss. A network topology
10
– 32 dBm
57 µVrms
40 dB Gain
1
–15 dB
(Attenuator)
40 dB Gain
ARCHIVE INFORMATION
Freescale Semiconductor, Inc...
ARCHIVE INFORMATION
Freescale Semiconductor,
Inc.
MC13155
shown below may be used to provide a bandpass response
with the desired insertion loss.
Network Topology
1.0n
10
16
0.22µ
7
1
1.0n
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Freescale Semiconductor,
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MC13155
Q = RT/XL
where: RT is the equivalent shunt resistance across the LC
Tank and XL is the reactance of the quadrature inductor at the
IF frequency (XL = 2πfL).
The inductor and capacitor are chosen to form a resonant
LC Tank with the PCB and parasitic device capacitance at the
desired IF center frequency as predicted by:
(2)
fc = (2π √(LCp)) –1
ARCHIVE INFORMATION
Freescale Semiconductor, Inc...
(1)
where: L is the parallel tank inductor and Cp is the equivalent
parallel capacitance of the parallel resonant tank circuit.
The following is a design example for a wideband detector
at 70 MHz and a loaded Q of 5. The loaded Q of the
quadrature detector is chosen somewhat less than the Q of
the IF bandpass. For an IF frequency of 70 MHz and an
IF bandpass of 10.9 MHz, the IF bandpass Q is
approximately 6.4.
Example:
Let the external Cext = 20 pF. (The minimum value here
should be greater than 15 pF making it greater than the
internal device and PCB parasitic capacitance, Cint ≈
3.0 pF).
Cp = Cint + Cext = 23 pF
Rewrite Equation 2 and solve for L:
L = (0.159)2 /(Cp fc2)
L = 198 nH, thus, a standard value is chosen.
L = 0.22 µH (tunable shielded inductor).
The value of the total damping resistor to obtain the
required loaded Q of 5 can be calculated by rearranging
Equation 1:
RT = Q(2πfL)
RT = 5 (2π)(70)(0.22) = 483.8 Ω.
The internal resistance, Rint between the quadrature tank
Pins 8 and 9 is approximately 3200 Ω and is considered in
determining the external resistance, Rext which is calculated
from:
Rext = ((RT)(Rint))/ (Rint – RT)
Rext = 570, thus, choose the standard value.
Rext = 560 Ω.
SAW Filter
In wideband video data applications, the IF occupied
bandwidth may be several MHz wide. A good rule of thumb is
to choose the IF frequency about 10 or more times greater
than the IF occupied bandwidth. The IF bandpass filter is a
SAW filter in video data applications where a very selective
response is needed (i.e., very sharp bandpass response).
The evaluation PCB is laid out to accommodate two SAW
filter package types: 1) A five–leaded plastic SIP package.
Recommended part numbers are Siemens X6950M which
operates at 70 MHz; 10.4 MHz 3 dB passband, X6951M
(X252.8) which operates at 70 MHz; 9.2 MHz 3 dB passband;
and X6958M which operates at 70 MHz, 6.3 MHz 3 dB
passband, and 2) A four–leaded TO–39 metal can package.
Typical insertion loss in a wide bandpass SAW filter is 25 dB.
The above SAW filters require source and load
impedances of 50 Ω to assure stable operation. On the PC
board layout, space is provided to add a matching network,
such as a 1:4 surface mount transformer between the SAW
filter output and the input to the MC13155. A 1:4 transformer,
made by Coilcraft and Mini Circuits, provides a suitable
interface (see Figures 16, 17 and 18). In the circuit and
layout, the SAW filter and the MC13155 are differentially
configured with interconnect traces which are equal in length
and symmetrical. This balanced feed enhances RF stability,
phase linearity, and noise performance.
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11
ARCHIVE INFORMATION
Quadrature Detector
The quadrature detector is coupled to the IF with internal
2.0 pF capacitors between Pins 7 and 8 and Pins 9 and 10.
For wideband data applications, such as FM video and
satellite receivers, the drive to the detector can be increased
with additional external capacitors between these pins, thus,
the recovered video signal level output is increased for a
given bandwidth (see Figure 11A and Figure 11B).
The wideband performance of the detector is controlled by
the loaded Q of the LC tank circuit. The following equation
defines the components which set the detector circuit’s
bandwidth:
12
1.0k
10p
Decouple
1.0k
15
RSSI
RSSI
Buffer
Input
2
12
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16
3
1
Bias
10
LIM Out
9
8
14
7
VEE 1
Quad Coil
2.0p
1.6k
LIM Out
ARCHIVE INFORMATION
Input
Bias
8.0k
8.0k
13
VCC 1
Figure 15. Simplified Internal Circuit Schematic
ARCHIVE INFORMATION
Freescale Semiconductor, Inc...
2.0p
1.6k
6
VEE 2
1.0p
VCC 2
Det
Out
Freescale Semiconductor,
Inc.
MC13155
Figure 15.
1
Freescale Semiconductor,
Inc.
MC13155
Figure 16. 70 MHz Video Receiver Application Circuit
If Input
1:4
1
5
SAW Filter
2
3
4
220
1.0n
1.0n
RSSI
Output
MC13155
IN2 16
Freescale Semiconductor, Inc...
ARCHIVE INFORMATION
1 IN1
100p
2 DEC1
DEC2 15
3 VCC1
VEE1 14
4 DETO1
RSSI 13
Buffer
5 DETO2
RSSI 12
6 VCC2
VEE2 11
7 LIMO1
LIMO2 10
10k
100p
10n
47k
100n
1.0n
10n
QUAD2
8 QUAD1
9
+ 10µ
VEE1
820
820
820
820
1.0n
IN2 16
1 IN1
100p
1.0n
MC13155
DEC2 15
2 DEC1
100p
3 VCC1
VEE1 14
4 DETO1
RSSI 13
Buffer
5 DETO2
RSSI 12
6 VCC2
VEE2 11
100n
Detector
Output
100n
33p
1.0k
33p
1.0k
10n
10n
LIMO2 10
7 LIMO1
2.0p
QUAD2
8 QUAD1
10µ
VEE2
+
2.0p
9
560
20p
L
L– Coilcraft part number 146–08J08S
0.22µ
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13
ARCHIVE INFORMATION
SAW Filter is Siemens
Part Number X6950M
Freescale Semiconductor,
Inc.
MC13155
Figure 18. Component Placement (Ground Side)
14
ARCHIVE INFORMATION
Freescale Semiconductor, Inc...
ARCHIVE INFORMATION
Figure 17. Component Placement (Circuit Side)
MOTOROLA ANALOG IC DEVICE DATA
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Freescale Semiconductor,
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MC13155
Figure 19. Circuit Side View
ARCHIVE INFORMATION
Freescale Semiconductor, Inc...
ARCHIVE INFORMATION
4.0″
4.0″
Figure 20. Ground Side View
MOTOROLA ANALOG IC DEVICEFor
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15
Freescale Semiconductor,
Inc.
MC13155
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
16
9
–B
–
Freescale Semiconductor, Inc...
ARCHIVE INFORMATION
1
0.25 (0.010)
P
M
B
M
8 PL
8
G
R X 45°
C
SEATING
PLANE
–T
–
D 16 PL
0.25 (0.010)
M
T
K
B
A
S
S
M
F
J
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
9.80 10.00
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.19
0.25
0.10
0.25
0°
7°
5.80
6.20
0.25
0.50
INCHES
MIN
MAX
0.386 0.393
0.150 0.157
0.054 0.068
0.014 0.019
0.016 0.049
0.050 BSC
0.008 0.009
0.004 0.009
0°
7°
0.229 0.244
0.010 0.019
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
ARCHIVE INFORMATION
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. 751B–03 IS OBSOLETE, NEW STANDARD
751B–04.
–A
–
Mfax is a trademark of Motorola, Inc.
How to reach us:
USA / EUROPE / Locations Not Listed: Motorola Literature Distribution;
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JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 4–32–1,
Nishi–Gotanda, Shinagawa–ku, Tokyo 141, Japan. 81–3–5487–8488
Mfax: [email protected] – TOUCHTONE 602–244–6609
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– US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
INTERNET: http://motorola.com/sps
16
◊
MC13155/D
MOTOROLA ANALOG IC DEVICE DATA
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