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PDF MC13122 Data sheet ( Hoja de datos )
| Número de pieza | MC13122 | |
| Descripción | AMAX STEREO IC CHIPSET | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MC13122 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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AMAX Stereo Chipset
The MC13027 and MC13122 have been specifically designed for AM
radio which can meet the EIA/NAB AMAX requirements. They are
essentially the same as the MC13022A and MC13025 with the addition of
noise blanking circuitry. The noise blanker consists of a wide band amplifier
with an RF switch for blanking ahead the IF amplifier and a stereo audio
blanker with adjustable delay and blanking times.
• Operating Voltage Range of 6.0 V to 10 V
• RF Blanker with Built–In Wide Band AGC Amplifier
• Audio Noise Blanker with Audio Track and Hold
• Mixer Third Order Intercept of 8.0 dBm (115 dBµV)
• Wide Band AGC Detector for RF Amplifier
• Local Oscillator VCO Divide–by–4 for Better Phase Noise
• Buffered Local Oscillator Output at the Fundamental Frequency
• Fast Stereo Decoder Lock
• Soft Stereo Blend
• Signal Quality Detector to Control Variable Q–Notch Filters for Adaptive
Audio Bandwidth and Whistle Reduction
• Signal Quality Detector for AM Stereo
• Very Low Distortion Envelope and Synchronous Detectors
• Variable Bandwidth IF
Device
MC13027DW
MC13027P
MC13122DW
MC13122P
ORDERING INFORMATION
Operating
Temperature Range
TA = –40 ° to +85°C
Package
SO–20L
Plastic DIP
SO–28L
Plastic DIP
Order this document from Analog Marketing
MC13027
MC13122
AMAX STEREO
IC CHIPSET
MC13027
20
1
P SUFFIX
PLASTIC PACKAGE
CASE 738
20
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
MC13122
28
1
28
1
P SUFFIX
PLASTIC PACKAGE
CASE 710
DW SUFFIX
PLASTIC PACKAGE
CASE 751F
(SO–28L)
To Synthesizer
Oscillator
Buffer
RF Input
Functional Block Diagram
Osc
Tank
Voltage
Controlled
Oscillator
AGC Wide Band
Input AGC
AM
Detector
÷4 Mixer
AGC
Output
Pulse
Detector
Pulse Length
Timer
IF Amplifier
RF
Blanking
Shunt
Switch
450 kHz IF
IF Amplifier
AGC
Fast
AGC
Control
Decoder
L
Track & Hold
R
Q 450 kHz Blend cosθ
Pilot
Detector
Fast Lock
Control
Left Audio
Post Detector
Filter
Right Audio
Stereo Indicator Lamp
RF Automatic
Input Gain Controlled
RF Amplifier
Pulse Delay Pulse Length
Timer
Timer
Fast/
Slow
I Yes/No
Signal Quality
Audio
Blanking
Detector
Signal Level
Stop–Sense
RF AGC Meter Drive
MC13027
MC13122
This device contains 428 active transistors.
This device contains 670 active transistors.
This document contains information on a product under development. Motorola reserves the
rigMhtOtoTcOhaRngOeLorAdisAcNonAtinLuOe tGhisICproDduEcVt wICithEouDt nAotTicAe.
© Motorola, Inc. 1996
Issue 1
1
1 page  
MC13027 MC13122
Figure 2. MC13122 Test Circuit
Envelope Det Out
I Detector Out
Q Detector Out
R10 C2 L1
13 k 120 1.0 mH
C3 47 µF
450 kHz IF In
100 k
R6
C6
1.0 µF
C4
10 k
R5
10 µF
.01
U2 Ch2 Out 6
Ch2 Cont 5
Ch2 In 4
Ch1 In 3
Ch1 Cont 2
Ch1 Out 1
THB122
SS Out
Left
Audio Out
1000
C1
1000 MC13122
C28 C27
1000 1000
1 E Det
IC2
I Det 28
2 Det In
L–R Det 27
3 3.0 V Reg
Q Det 26
4 AGC
5 IF In
6 SS
VCC 25
Loop Filt
Blend
24
23
C24
47 µF
7 L Out
8 L Filt In
9 L Filt Ctr
10 L Mat Out
Gnd 22
Pilot Ind 21
Osc Out 20
Osc In 19
1.0 k
3.6 MHz R20
X1
11 R Mat Out
12 R Filt Ctr
Pilot Det I 18
Pilot I 17
13 R Filt In
Pilot Q 16
14 R Out
Audio Blank 15
C22
220 µF
2.2 k
R26
C23 22 µF
Stereo
D1
CA
3.9 k 51 C29
R12 1000 C30
C18
22 µF
C31
1.0 µF
C16 C17
0.47 µF 10 µF
1000
Right
Audio Out
AF Blank
C
B
E MPS6515
Q3
33 k
R11
Blend Disable
8.0 V
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page 
MC13027 MC13122
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁPin Name
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ8 VCC
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ9 VCLO
MC13027 PIN FUNCTION DESCRIPTION (continued)
Internal Equivalent Circuit
Description
VCC
VCC 8
Supply Voltage
The normal operating voltage range is 6.0 to 10 V.
Voltage Control Local Oscillator
VCC The oscillator is a cross coupled negative
4.0 V resistance type and this pin must be connected
VCLO
through a low dc resistance to Pin 4, the 4.0 V
1.5 k 9 regulator. Normally, this would be the secondary of
the oscillator coil.
The impedance of the secondary winding should
be around 2.8 kΩ to guarantee that the oscillator
will run. It operates at 4 times the LO frequency:
fosc = 4(Fin+FIF).
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ10 LOOut
VCC
390 LO Out
10
Local Oscillator Output
This is an emitter follower for LO output to drive a
synthesizer. It is a square wave output, the internal
series resistance and allows a small bypass to
reduce high frequency harmonics.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ12 RFBlank
RF Blk
12
100 k
RF Blanker
An unbiased NPN acts as a SHUNT impedance
when turned on. The 100 k resistor provides a dc
path for the capacitor.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ13 Gnd2
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ14 IFIn
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ16 IFOut
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ15 RFTime
Gnd
13
4.0 V
VCC
2.2 k
IF Out
16
220 Ω
3.4 k 3.4 k
IF In
14
4.0 V
10 k RF Blk Time
15
IF Ground
Pin 13 is the ground for the IF section and the
timing and switching circuits in the blanker.
In the application circuit this should be common to
the MC13122 ground.
IF Input
A degenerated differential amplifier internally
biased to 4.0 V. The IF input impedance is
approximately 1.8 k to match a ceramic filter. The
IF amplifier is used as a buffer between the
ceramic filter and the detector coil and has a fixed
gain determined by the impedance of the output
coil.
IF Output
An open collector provides high–impedance drive
to the MC13122; the IF gain is set by the ac
impedance on this pin.
RF Blank Time
A resistor to ground sets the RF blanking time. The
time is set to the minimum required to attenuate
the pulse received. This is normally longest at the
low end of the band. The value is best approved by
ear. A fixed value can be chosen for production.
(50 µs is typical.)
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet MC13122.PDF ] | |
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