CA3088E [INTERSIL]
AM Receiver Subsystem and General-Purpose Amplifier Array; AM接收器子系统和通用放大器阵列
| 型号： | CA3088E |
| 厂家： | 
Intersil |
| 描述： | AM Receiver Subsystem and General-Purpose Amplifier Array |
| 文件： | 总4页 (文件大小：49K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CA3088E
AM Receiver Subsystem and
General-Purpose Amplifier Array
May 1999
Features
Description
[ /Title
(CA30
88E)
/Sub-
ject
(AM
Receiv
er Sub-
sys-
tem
and
Gen-
eral-
Pur-
pose
Ampli-
fier
Array)
/Autho
r ()
/Key-
words
()
/Cre-
ator ()
/DOCI
NFO
pdf-
• Excellent Overload Characteristics
• AGC for IF Amplifier
The CA3088E, a monolithic integrated circuit, is an AM sub-
system that provides the converter, IF amplifier, detector,
and audio preamplifier stages for an AM receiver.
• Buffered Output Signal for Tuning Meter
• Internal Zener Diode Provides Voltage Regulation
• Two IF Amplifier Stages
The CA3088E also provides internal AGC for the first IF
amplifier stage, delayed AGC for an optional external RF
amplifier, a buffer stage to drive a tuning meter, and termi-
nals facilitating the optional use of a tone control.
• Low-Noise Converter and First IF Amplifier
• Low Harmonic Distortion (THD)
Figure 2 is a functional diagram of the CA3088E. The signal
from the low-noise converter is applied to the first IF ampli-
fier and is then coupled to the second IF amplifier. This IF
signal is then detected and externally filtered. The resultant
audio signal is applied to an audio preamplifier. Optionally, a
tone control circuit may be connected at the junction of the
detector circuit and the audio preamplifier. The gain of the
first IF amplifier stage is controlled by an internal AGC cir-
cuit. The CA3088E supplies a delayed AGC signal output for
use with an external RF amplifier. A buffered output signal is
also available for driving a tuning meter. A DC voltage, inter-
nally regulated by a Zener diode, supplies the second IF
amplifier, the AGC and tuning meter circuits and may also be
used with any other stage.
• Delayed AGC for RF Amplifier
• Terminals for Optional Inclusion of Tone Control
• Operates from Wide Range of Power Supplies:
V+ = 6V to 16V
• Optional AC and/or DC Feedback on Wide-Band
Amplifier
• Array of Amplifiers for General-Purpose Applications
• Suitable for Use With Optional External RF Stage,
Either MOS or Bipolar
The CA3088E features four independent transistor amplifi-
ers, each incorporating internal biasing for temperature
tracking. These amplifiers are particularly useful in general-
purpose amplifier, oscillator, and detector applications in a
wide variety of equipment designs.
• Related at:
- Refer to AN6022 for Application Note Information
Part Number Information
TEMP.
PKG.
NO.
o
PART NUMBER RANGE ( C)
PACKAGE
16 Ld PDIP
CA3088E
-40 to 85
E16.3
Pinout
mark
CA3088E
(PDIP)
TOP VIEW
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CONV. BYPASS
CONV. IN
1
2
3
4
5
6
7
8
16 AUDIO V+
15 AUDIO OUT
14 AUDIO IN
CONV. OUT
1ST IF IN
13 RF AGC
GND
12 TUNING METER
11 AGC FILTER
10 2ND IF V+
1ST IF OUT
2ND IF FB
2ND IF IN
mark
9
DET. OUT
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 560.2
Copyright © Harris Corporation 1999
8-23
CA3088E
o
Absolute Maximum Ratings T = 25 C
Thermal Information
A
o
Supply Voltage
Thermal Resistance (Typical, Note 1)
θJA ( C/W)
(Across Term. 5 and Terms. 3, 6, 13, 16, Respectively) . . . . . 16V
Output Current
Terminals 3, 6, 13, 16, (Respectively). . . . . . . . . . . . . . . . . 10mA
Terminal 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Junction Temperature (Plastic Package) . . . . . . . 150 C
Maximum Storage Temperature Range . . . . . . . . . -65 C to 150 C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300 C
110
o
o
o
o
Operating Conditions
o
o
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40 C to 85 C
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.
NOTE:
1. θ is measured with the component mounted on an evaluation PC board in free air.
JA
o
Electrical Specifications T = 25 C, V+ = 12V
A
PARAMETER
DC CHARACTERISTICS
Voltage (Figure 1)
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
V , V , V , V
Terminals 1, 4, 9, 11
-
-
-
-
-
-
-
-
-
-
0.7
1.4
5.6
0
-
-
-
-
-
-
-
-
-
-
V
V
1
4
9
11
V , V , V
Terminals 2, 7, 8
Terminal 10
Terminal 12
Terminal 15
Terminal 3
2
7
8
V
V
V
V
10
12
15
V
3.5
0.35
1.0
20
V
Current (Figure 1)
I
I
I
I
I
mA
mA
mA
mA
mA
3
Terminal 6
6
Terminal 10
Terminal 13
Terminal 16
10
13
16
0
1.2
DYNAMIC CHARACTERISTICS
Detector Output (Figure 2)
Audio Amplifier Gain (Figure 2)
Audio Distortion (Figure 2)
Sensitivity
30% Modulation
f = 1kHz
-
-
-
-
-
75
30
-
-
-
-
-
mV
RMS
A
dB
AF
V
= 100mV
0.2
200
100
%
OUT
At Converter Stage Input (Figure 2)
At RF Stage Input (Figure 2)
µV/m
µV/m
(f = 1MHz, Signal-to-Noise Ratio
IN
(S/N) = 20dB))
Total Harmonic Distortion (Figure 2)
Input Resistance
THD
30% Modulation
-
-
-
-
-
-
-
1.0
3500
2000
17
-
-
-
-
-
-
-
%
Ω
R
C
C
At Transistor Q
At Transistor Q
At Transistor Q
At Transistor Q
At Transistor Q
At Transistor Q
IN
IN
FB
1
5
1
5
1
5
(No AGC, f = 1MHz)
IN
Ω
Input Capacitance
(No AGC, f = 1MHz)
IN
pF
pF
pF
pF
12
Feedback Capacitance
(No AGC, f = 1MHz)
IN
1.5
1.5
8-24
CA3088E
V+ = 12V
1
2
3
4
5
6
7
8
0.1µF
0.1µF
CA3088E
9
16 15 14 13 12 11 10
330Ω
5kΩ
5kΩ
2kΩ
1kΩ
FIGURE 1. TEST CIRCUIT FOR DC CHARACTERISTICS
100
150
200
V+ = 9V
0.05µF
0.05µF
OSC.
TUNING
130pF
0.039
0.02
2000
10
0.05
2ND
3
4
6
7
8
0.01
10K
GANG
9
2
IF
AMPLIFIER
TO DETECTOR
25
0.05
IF AMPL.
AND DET.
FILTER AND AUDIO
(OPTIONAL TONE
CONTROL MAY BE
SHUNTED FROM
TERMINAL 9
CONVERTER
TO RF STAGE
OF ANTENNA
TO GROUND)
CA3088E
TO TUNING
METER
12
METER
OUTPUT
FROM
14
1
DETECTOR
AUDIO
PREAMPLIFIER
FILTER
0.01
AGC
TO RF
AMPLIFIER
AUDIO
5600
15
13
OUTPUT
6800
IF AGC
RF
AGC
25
16
V+ = 9V
5
SUBSTRATE
11
50
10
1500
NOTE: Resistance values are in Ω. Capacitance values in µF, except as noted.
FIGURE 2. FUNCTIONAL BLOCK DIAGRAM OF THE CA3088E
8-25
CA3088E
CONVERTER
1ST IF AMPLIFIER
V+
10
2ND IF
AMPLIFIER
8
INPUT
INPUT BYPASS
CONVERTER
OUTPUT
3
1
4
6
INPUT
OUTPUT
R
15
5K
200
CONVERTER
INPUT
Q
Q
Q
10
5
7
Q
2
1
Q
12
Q
9
DETECTOR
OUTPUT
9
7
R
R
16
5K
R
R
14
5K
8
13
5K
R
2
4K
2K
SECOND IF
FEEDBACK
5.6V
V+
16
R
R
20
1.2K
R
R
1
6.8K
18
6K
R
200
12
4.7K
3
Z
1
200
14
4K
R
19
Q
6
Q
Q
2
6.8K
AUDIO
OUTPUT
15
D
1
R
21
5.6K
R
700
4
D
2
Q
8
Q
11
Q
13
Q
4
ALL RESISTANCE
VALUES ARE IN
OHMS
R
1.5K
7
D
3
Q
3
R
5
R
11
R
D
17
200
4
5.5K
2.2K
R
9
1K
R
R
2K
10
220
6
D
5
AUDIO INPUT
FROM DETECTOR FILTER
TO
12
AGC
14
5
13
11
TUNING
METER
SUBSTRATE
AGC OUTPUT
FOR OPTIONAL
RF STAGE
FILTER
FIGURE 3. SCHEMATIC DIAGRAM OF THE CA3088E
8-26
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