Datenblatt-Suchmaschine für elektronische Bauteile
  German  ▼
ALLDATASHEETDE.COM

X  

MC13027P Datenblatt(PDF) 6 Page - Motorola, Inc

Teilenummer MC13027P
Bauteilbeschribung  AMAX STEREO CHIPSET
Download  28 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Hersteller  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MC13027P Datenblatt(HTML) 6 Page - Motorola, Inc

Back Button MC13027P Datasheet HTML 2Page - Motorola, Inc MC13027P Datasheet HTML 3Page - Motorola, Inc MC13027P Datasheet HTML 4Page - Motorola, Inc MC13027P Datasheet HTML 5Page - Motorola, Inc MC13027P Datasheet HTML 6Page - Motorola, Inc MC13027P Datasheet HTML 7Page - Motorola, Inc MC13027P Datasheet HTML 8Page - Motorola, Inc MC13027P Datasheet HTML 9Page - Motorola, Inc MC13027P Datasheet HTML 10Page - Motorola, Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 28 page
background image
MC13027 MC13122
6
MOTOROLA ANALOG IC DEVICE DATA
AMAX STEREO CHIPSET
What is AMAX?
In 1993, a joint proposal by the EIA (Electronic Industries
Association) and the NAB (National Association of
Broadcasters) was issued. It included a unified standard for
pre–emphasis and distortion for broadcasters as well as a set
of criteria for the certification of receivers. The purpose of this
proposal was to restore quality and uniformity to the AM band
and to make it possible for the consumer to receive high
quality signals using the AM band. The FCC has been
supportive of this initiative and has required all new
broadcast licensees to meet AMAX standards. The NAB and
EIA have continued to encourage receiver manufacturers by
offering the AMAX certification logo to be displayed on all
qualifying radios. This logo is shown below.
or
The Receiver Criteria
An AMAX receiver must have wide bandwidth: 7.5kHz for
home and auto, 6.5 kHz for portables. It must have some
form of bandwidth control, either manual or automatic,
including at least two bandwidth provisions, such as “narrow”
and “wide”. It must meet NRSC receiver standards for
distortion and deemphasis. It must have provisions for an
external antenna. It must be capable of tuning the expanded
AM band (up to 1700 kHz). And finally, home and auto
receivers must have effective noise blanking. All of these
requirements, except the noise blanking, have been met by
Motorola’s previous AM radio products, such as MC13025
Front End and the MC13022A C–QUAM stereo decoder. It is
the Noise Blanker requirement which is met by the two
devices on this data sheet, the MC13027 and MC13122.
Noise blanking, especially in AM auto radios, has become
extremely important. The combination of higher energy
ignitions, using multiple spark coils, along with increased use
of plastic in the auto body, have increased the noise energy
at the radio. Also, the consumer has learned to expect higher
quality audio due to advances in many other media. For the
AM band to sustain interest to the consumer, a truly effective
noise blanker is required.
The block diagram below shows the Motorola AMAX
stereo chipset. It offers a two–pronged approach to noise
blanking which is believed to be the most effective yet offered
in the consumer market. The initial blanking takes place in
the output of the mixer, using a shunt circuit triggered by a
carefully defined wideband receiver. For most noises, some
residual audible disturbance is almost always still present
after this process. The disturbance becomes stretched and
delayed as it passes through the rest of the selectivity in the
receiver. The stretching and delay are predictable, so the
MC13027 can provide a noise blanking pulse with the correct
delay and stretch to the output stages of the MC13122
decoder. The MC13122 has a Track and Hold circuit which
receives the blanking signal from the Front End and uses it to
gently hold the audio wherever it is as the pulse arrives, and
hold that value until the noise has passed. The combined
effect is dramatic. A wide range of types of noise is
successfully suppressed and the resulting audio seems
almost clean until the noise is so intense that the blanking
approaches full–time.
The amount of extra circuitry to accomplish noise blanking
is relatively small. The external components for this added
capability are shown in Figure 3. In the MC13027 Front end,
the noise receiver/detector requires two capacitors. The
presettings for blanking timing and blanking delay require
three external fixed resistors. Finally the decoder requires
two track and hold capacitors to store the “audio” voltage
during the track and hold function.
Figure 3. AMAX Stereo Receiver with Noise Blanker
MC13027
MC13122
Audio Blank
450 kHz
Filter
RF Attenuate
Left
Right
RF In
Pin
Diode
Reset
AGC
RF
Amplifier
Mixer
IF
Amplifier
AGC’d IF
Amplifier
AM
Stereo
Decoder
Track
and
Hold
Variable
Notch Filter
Wideband
AGC
4.0 V
Regulator
Divide
by 4
VCO
RF
Attenuator
Switch
RF Blank
Timer
AGC’d RF
Amplifier
AM
Detector
Audio
Reject
Filter
Pulse
Detector
Delay
Timer
Audio Blank
Timer
Audio
Blank
Switch


Ähnliche Teilenummer - MC13027P

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Motorola, Inc
MC13020P MOTOROLA-MC13020P Datasheet
793Kb / 6P
   MOTOROLA C-QUAM AM STEREO DECODER
MC13022A MOTOROLA-MC13022A Datasheet
118Kb / 8P
   Advanced Medium Voltage AM Stereo Decoder
MC13022ADW MOTOROLA-MC13022ADW Datasheet
118Kb / 8P
   Advanced Medium Voltage AM Stereo Decoder
MC13022AP MOTOROLA-MC13022AP Datasheet
118Kb / 8P
   Advanced Medium Voltage AM Stereo Decoder
MC13028A MOTOROLA-MC13028A Datasheet
499Kb / 20P
   C-QUAM AM STEREO ADVANCED WIDE VOLTAGE IF and DECODER for E.T.R. RADIOS
More results

Ähnliche Beschreibung - MC13027P

HerstellerTeilenummerDatenblattBauteilbeschribung
logo
Advanced Micro Devices
AMD-750 AMD-AMD-750 Datasheet
322Kb / 12P
   Chipset
logo
Intel Corporation
301467-005 INTEL-301467-005 Datasheet
3Mb / 426P
   Express Chipset
317610-001 INTEL-317610-001 Datasheet
2Mb / 342P
   Express Chipset
317607-001 INTEL-317607-001 Datasheet
2Mb / 351P
   Express Chipset
logo
Advantech Co., Ltd.
IDAQ-964 ADVANTECH-IDAQ-964 Datasheet
212Kb / 1P
   4-slot Industrial DAQ Chassis Module for AMAX-5000 Controllers
8-Feb-2022
logo
Macronix International
MX86251 MCNIX-MX86251 Datasheet
497Kb / 32P
   3D graphic chipset
logo
Cyrustek corporation
ES51920 CYRUSTEK-ES51920 Datasheet
444Kb / 11P
   LCR meter chipset
logo
List of Unclassifed Man...
CS1100 ETC-CS1100 Datasheet
169Kb / 2P
   Powerline Networking Chipset
logo
Quantum Research Group
MSM6500 QUANTUM-MSM6500 Datasheet
366Kb / 8P
   MSM6500??CHIPSET SOLUTION
logo
Axiomtek Co., Ltd.
SBC84710 AXIOMTEK-SBC84710 Datasheet
271Kb / 1P
   VIA CX700M chipset
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28


Datenblatt Download

Go To PDF Page


Link URL




Privatsphäre und Datenschutz
ALLDATASHEETDE.COM
War ALLDATASHEET hilfreich?  [ DONATE ] 

Über Alldatasheet   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   Linktausch   |   Hersteller
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com