CA2111AE [HARRIS]
FM IF Amplifier-Limiter and Quadrature Detector; FM IF放大器，限幅器和正交检波器
| 型号： | CA2111AE |
| 厂家： | 
HARRIS CORPORATION |
| 描述： | FM IF Amplifier-Limiter and Quadrature Detector |
| 文件： | 总5页 (文件大小：56K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CA2111A
FM IF Amplifier-Limiter
and Quadrature Detector
May 1999
Features
Description
[ /Title
(CA21
11A)
/Sub-
ject
(FM
IF
Ampli-
fier-
Limiter
and
Quadra
ture
Detec-
tor)
/Autho
r ()
• Input Limiting Voltage At 10.7MHz . . . . . . . . . . . 400µV The CA2111A provides a multistage wideband amplifier-
limiter, a quadrature detector, and an emitter-follower output
stage. This device is designed for use in FM receivers and in
the sound IF sections of TV receivers. In addition, an output
terminal is provided which allows the use of the amplifier-
• Input Limiting Voltage At 4.5, 5.5MHz . . . . . . . . 250µV
• Typical AM Rejection At 10.7MHz. . . . . . . . . . . . . 45dB
• Provision for Output from 3-Stage IF Amplifier Section
limiter as a straight 60dB wideband amplifier.
• Low Harmonic Distortion
The amplifier-limiter features the excellent limiting character-
istic of 3 cascaded differential amplifiers. The quadrature
detector requires only one coil in the associated outboard
circuit and therefore, tuning is a simple procedure.
• Quadrature Detection Permits Simplified Single-Coil
Tuning
• Extremely Low AFC Voltage Drift Over Full Operating
Temperature Range
A unique feature of the CA2111A is its exceptionally low
AFC voltage drift over the full operating-temperature range.
• Minimum Number of External Components Required
Part Number Information
Applications
• FM IF Sound
• TV Sound IF
TEMP.
PKG.
NO.
o
PART NUMBER RANGE ( C)
PACKAGE
14 Ld PDIP
CA2111AE
-40 to 85
E14.3
/Key-
words
(Har-
ris
Semi-
con-
ductor,
FM IF
ampli-
fier,
quadrat
ure
Pinout
Block Diagram
L
1
CA2111A
(PDIP)
TOP VIEW
14µH
V+
+12V
3pF
120pF
C
1
AUDIO OUT
REF BIAS
NC
1
2
3
4
5
6
7
14 DE-EMPHASIS
13 V+
13
3
9
12
2
4
6
AMPLIFIER-
LIMITER
12 QUADRATURE INPUT
11 QUADRATURE IN BUF
10 HIGH IF OUTPUT
51Ω
QUADRATURE
DETECTOR
IF IN
0.1µF
0.1µF
DC FB BYPASS
INPUT BYPASS
GROUND
5
9
8
LOW IF OUTPUT
NC
EMITTER
FOLLOWER
1
BIAS
detec-
tor,
lim-
11
14
8
10
7
0.003µF
iter,
TV
audio
IF,
high
AM
rejec-
tion,
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 612.2
Copyright © Harris Corporation 1999
8-13
CA2111A
o
Absolute Maximum Ratings T = 25 C
Thermal Information
A
o
Supply Voltage (V+ to V-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V Thermal Resistance (Typical, Note 1)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
θJA ( C/W)
150
o
Maximum Junction Temperature (Plastic Package) . . . . . . . . 150 C
Operating Conditions
o
o
Maximum Storage Temperature Range . . . . . . . . . -65 C to 150 C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300 C
o
o
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . -40 C to 85 C
Supply Voltage Range (Typical) . . . . . . . . . . . . . . . . . . . . 8V to 12V
o
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. θ is measured with the component mounted on an evaluation PC board in free air.
JA
o
Electrical Specifications T = 25 C Unless Otherwise Specified
A
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
5.4
3.7
1.35
3.5
14
MAX
UNITS
V
Terminal 1 DC Voltage
V+ = 12V
V+ = 8V
V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
V
Terminals 4, 5, 6, 10 DC Voltage
Terminals 2, 12 DC Voltage
Supply Current, Pin 13
V
V+ = 8V
V
4, 5, 6, 10
V
V+ = 8V
V+ = 8V
V
2, 12
I
mA
mA
kΩ
pF
kΩ
pF
Ω
13
V+ = 12V
16
Amplifier Input Resistance
Amplifier Input Capacitance
Detector Input Resistance
Detector Input Capacitance
Amplifier Output Resistance
Detector Output Resistance
De-emphasis Resistance
f = 10.7MHz
O
R
C
7
4
4
11
R
70
12
12
10
C
R
2.7
60
R
200
8.8
Ω
1
R
kΩ
14
DYNAMIC CHARACTERISTICS f = 10.7MHz, ∆f = ±75kHz, V+ = 8V, FM Modulation Frequency = 400Hz, Source Resistance = 50Ω
O
Input Limiting Threshold Voltage
AM Rejection
V
-
-
-
-
-
400
37
55
0.3
1
600
µV
RMS
I(LIM)
V = 10mV
, 100% FM, 30% AM
AMR
I
RMS
-
-
-
-
dB
dB
Amplifier Voltage Gain
V = 50µV
I
A
RMS
V
Detector Recovered Audio Output
Total Harmonic Distortion
V = 10mV
I
V
RMS
RMS
V
O(AF)
RMS
%
V = 10mV
THD
I
DYNAMIC CHARACTERISTICS f = 10.7MHz, ∆f = ±75kHz, V+ = 12V, FM Modulation Frequency = 400Hz, Source Resistance = 50Ω
O
Input Limiting Threshold Voltage
AM Rejection
V
-
-
-
-
-
400
45
600
µV
RMS
I(LIM)
V = 10mV
, 100% FM, 30% AM
AMR
I
RMS
-
-
-
-
dB
dB
Amplifier Voltage Gain
V = 50µV
I
A
RMS
55
V
Detector Recovered Audio Output
Total Harmonic Distortion
V = 10mV
I
V
RMS
RMS
0.48
1
V
O(AF)
RMS
%
V = 10mV
THD
I
DYNAMIC CHARACTERISTICS f = 4.5MHz, ∆f = ±25kHz, V+ = 12V, FM Modulation Frequency = 400Hz, Source Resistance = 50Ω
O
Input Limiting Threshold Voltage
AM Rejection
V
-
-
250
36
400
-
µV
RMS
I(LIM)
V = 10mV
, 100% FM, 30% AM
RMS
AMR
I
dB
8-14
CA2111A
o
Electrical Specifications T = 25 C Unless Otherwise Specified (Continued)
A
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
60
MAX
UNITS
Amplifier Voltage Gain
V = 50µV
I RMS
A
-
-
-
-
-
-
dB
V
Detector Recovered Audio Output
Total Harmonic Distortion
V = 10mV
I
V
RMS
RMS
0.72
1.5
V
O(AF)
RMS
%
V = 10mV
THD
I
DYNAMIC CHARACTERISTICS
f = 5.5MHz, ∆f = ±50kHz, V+ = 12V, FM Modulation Frequency = 400Hz, Source Resistance = 50Ω
O
Input Limiting Threshold Voltage
V
-
-
-
-
-
250
40
60
1.2
3
400
µV
RMS
I(LIM)
AM Rejection
V = 10mV
, 100% FM, 30% AM
AMR
I
RMS
-
-
-
-
dB
dB
Amplifier Voltage Gain
Detector Recovered Audio Output
Total Harmonic Distortion
V = 50µV
I
A
RMS
V
V = 10mV
V
I
RMS
RMS
V
O(AF)
RMS
%
V = 10mV
THD
I
Test Circuit
C
C
9
1
2
V+
DETECTOR
TRANSFER
13
COMPONENT VALUES
CHARACTERISTICS
NOTE
0.1µF
L
1
2
12
ƒ
L
C
R
Q
C
C
UPPER
PEAK
LOWER
PEAK
1
1
1
2
3
R
1
0.1µF
AM/FM SIGNAL
GENERATOR
MHz µH pF kΩ
-
pF
3
µF
MHz
4.58
5.63
10.9
MHz
4.42
5.37
10.5
4
10
14
0.1µF
50µF
4.5 14 120 20 30
0.003
0.003
51Ω
1
AC VTVM
6
5.5
8
2
100 20 30
3
2kΩ
0.1µF
8
10.7
120 3.9 20 4.7 0.01
7
C
3
3
5
0.1µF
DISTORTION
ANALYZER
NOTE: Input to the quadrature coil can be from either terminal 9 or
terminal 10. Terminal 9 is normally used because it lessens the
possibility of overloads during tuning. The use of terminal 10
increases the limiting sensitivity significantly and has been used
successfully in these tests.
8-15
CA2111A
Schematic Diagram
13
2
12
R
200
23
R
8.8K
19
R
12
3K
R
R
15
20
200
Q
26
Q
10
Q
16
R
200
18
200
Q
14
11
12
Q
17
R
R
1K
R
3
1K
5
Q
Q
R
1K
9
16
R
24
160K
Q
Q
21
19
Q
13
Q
6
3
200
Q
Q
Q
18
20
9
Q
1
R
17
Q
Q
8
Q
2
Q
5
4
7
Q
4
200
1
R
6
5
22
8K
Q
23
R
21
5K
Q
R
4K
27
R
450
Q
2
10
22
Q
Q
R
13
2.5K
14
15
R
500
R
2K
R
R
2K
R
8
500
1
6
4
500
7
Q
R
24
R
14
2.5K
Q
11
25
50
11
9
7
10
Typical Performance Curves
60
60
o
o
= 25 C
V+ = 12V
100% FM, 30% AM
= 4.5MHz
T
= 25 C
REF. SIGNAL INPUT (TERM. 10)
T
A
A
REF. SIGNAL INPUT (TERM. 10)
V+ = 12V
100% FM, 30% AM
= 5.5MHz
50
40
30
50
40
30
f
f
O
O
REF. SIGNAL INPUT (TERM. 9)
REF. SIGNAL INPUT (TERM. 9)
20
10
20
10
0.1
10
0.1
1
10
1
INPUT SIGNAL VOLTAGE (V ) (mV
i
)
INPUT VOLTAGE (V ) (mV
i
)
RMS
RMS
FIGURE 3. AM REJECTION vs INPUT VOLTAGE (AT 5.5MHz)
FIGURE 2. AM REJECTION vs INPUT VOLTAGE (AT 4.5MHz)
8-16
CA2111A
Typical Performance Curves (Continued)
50
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
o
T
= 25 C, V+ = 12V
SUPPLY VOLTAGE
A
f
= 4.5MHz
∆ f = ±25kHz
O
12V
8V
40
REF. SIGNAL INPUT (TERM. 9)
30
20
10
0
o
T
= 25 C
A
100% FM, 30% AM
= 5.5MHz
0.1
0
f
O
1
10
100
0.1
1
10
INPUT VOLTAGE (V ) (mV
i
)
INPUT VOLTAGE (V ) (mV
)
RMS
RMS
i
FIGURE 4. AM REJECTION vs INPUT VOLTAGE (AT 10.7MHz)
FIGURE 5. DETECTED AUDIO OUTPUT vs INPUT VOLTAGE
(4.5MHz)
1.3
o
INPUT CARRIER = 1mV
o
T
= 25 C, V+ = 12V
= 5.5MHz
A
1.2
1.1
1
SUPPLY VOLTAGE (V+) = 12V
8V
T
= 25 C
f
A
O
∆ f = ±50kHz
f
= 10.7MHz
O
∆ f = ±75kHz
REF. SIGNAL INPUT (TERM. 9)
100
0.9
0.8
0.7
0.6
0.5
10
0.4
0.3
0.1
INPUT VOLTAGE (V ) (mV
10
1
0.01
0.1
1
10
RMS
100
)
INPUT SIGNAL VOLTAGE (V ) (mV
)
i
RMS
i
FIGURE 6. DETECTED AUDIO OUTPUT vs INPUT VOLTAGE
(AT 5.5MHz)
FIGURE 7. DETECTED AUDIO OUTPUT VOLTAGE vs INPUT
VOLTAGE (AT 10.7MHz)
3.8
3.7
3.6
MODULATION FREQUENCY = 1kHz
o
T
= 25 C
A
∆ f = ±25kHz
80
60
40
SUPPLY VOLTAGE (V+) = 12V
8V
20
0
-50
0
-25
25
50
100
0.01
0.1
1
10
75
o
INPUT VOLTAGE (V ) (mV
)
RMS
TEMPERATURE ( C)
i
FIGURE 8. AFC VOLTAGE vs AMBIENT TEMPERATURE
FIGURE 9. SIGNAL-TO-NOISE RATIO vs INPUT VOLTAGE
8-17
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