MC13027 Datasheet, PDF (1/28 Pages) Motorola, Inc – AMAX STEREO CHIPSET

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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
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© Motorola, Inc. 1996
Issue 1
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