Order this document from Analog Marketing
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.
AMAX STEREO
IC CHIPSET
• 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
MC13027
20
20
1
1
P SUFFIX
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
PLASTIC PACKAGE
CASE 738
(SO–20L)
• Soft Stereo Blend
• Signal Quality Detector to Control Variable Q–Notch Filters for Adaptive
MC13122
Audio Bandwidth and Whistle Reduction
• Signal Quality Detector for AM Stereo
• Very Low Distortion Envelope and Synchronous Detectors
• Variable Bandwidth IF
P SUFFIX
PLASTIC PACKAGE
CASE 710
ORDERING INFORMATION
Operating
28
1
Temperature Range
Device
MC13027DW
MC13027P
Package
SO–20L
DW SUFFIX
PLASTIC PACKAGE
CASE 751F
Plastic DIP
SO–28L
28
T
= –40 ° to +85°C
A
MC13122DW
MC13122P
(SO–28L)
1
Plastic DIP
Functional Block Diagram
RF Input
Mixer
Oscillator
Buffer
To Synthesizer
Voltage
Controlled
Oscillator
450 kHz IF
IF Amplifier
Osc
Tank
÷
4
Left Audio
L
IF Amplifier
AGC
Post Detector
Decoder
Track & Hold
Filter
RF
Blanking
AGC
Input
Wide Band
AGC
R
AGC
Output
Right Audio
Fast
AGC
Control
Q
450 kHz Blend cos
Fast Lock
θ
Shunt
Switch
Pulse Length
Timer
Pilot
Detector
Control
AM
Detector
Pulse
Detector
Stereo Indicator Lamp
Fast/
Slow
Audio
Blanking
Automatic
Gain Controlled
RF Amplifier
RF
Input
Pulse Delay
Timer
Pulse Length
Timer
I
Yes/No
Signal Quality
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
Motorola, Inc. 1996
Issue 1
right to change or discontinue this product without notice.
1
MOTOROLA ANALOG IC DEVICE DATA