Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

A3845SLW Datasheet(PDF) 1 Page - Allegro MicroSystems

Part # A3845SLW
Description  AM NOISE BLANKER
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3845SLW Datasheet(HTML) 1 Page - Allegro MicroSystems

  A3845SLW Datasheet HTML 1Page - Allegro MicroSystems A3845SLW Datasheet HTML 2Page - Allegro MicroSystems A3845SLW Datasheet HTML 3Page - Allegro MicroSystems A3845SLW Datasheet HTML 4Page - Allegro MicroSystems A3845SLW Datasheet HTML 5Page - Allegro MicroSystems A3845SLW Datasheet HTML 6Page - Allegro MicroSystems A3845SLW Datasheet HTML 7Page - Allegro MicroSystems A3845SLW Datasheet HTML 8Page - Allegro MicroSystems  
Zoom Inzoom in Zoom Outzoom out
 1 / 8 page
background image
This noise blanker integrated circuit contains all of the necessary
circuitry for adding an extremely efficient (patented) noise-blanking
technique to any type of AM tuner or receiver with RF input frequen-
cies (or a first IF) to 30 MHz. The A3845ELW and A3845SLW
feature dual audio channels and are intended for AM-stereo or indepen-
dent sideband applications.
A high input impedance, high-gain, broadband RF amplifier
permits these devices to be directly connected to the RF stage of a
tuner. Internal AGC circuitry ensures that the noise detection threshold
remains constant with changes in input signal level. The RF gate
response time is sufficiently fast to blank the noise pulse at the output
of the mixer before the IF filter. Short blanking times effectively
suppress most of the interfering noise. Residual audio noise is re-
moved by an audio sample-and-hold gate. The RF blanking time,
audio gate delay time, and audio gate blanking time can all be indepen-
dently adjusted to suit the particular application.
These AM noise blankers are packaged in plastic SOICs and are
rated for operation over the a standard temperature range of -20
°C to
+85
°C (suffix ‘SLW’) or an extended temperature range to -40°C
(suffix ‘ELW’).
AM NOISE BLANKER
ABSOLUTE MAXIMUM RATINGS
at TA = +25
°C
Supply Voltage, VCC . . . . . . . . . . . . . .
12 V
Package Power Dissipation,
PD . . . . . . . . . . . . . . . . . . . . . . . 1.78 W
Operating Temperature Range, TA
Suffix ‘ELW’ . . . . . . . .
-40
°C to +85°C
Suffix ‘SLW’ . . . . . . . .
-20
°C to +85°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . . . -55
°C to +125°C
FEATURES
I RF Blanking to 30 MHz
I Single-Channel or Stereo Audio Blanking
I Adjustable RF and Audio Blanking Time
I Adjustable Audio Blanking Delay
I Sample-and-Hold MOS Audio Gates
I Internal Voltage Regulation
I Minimum External Components
APPLICATIONS
I AM and AM-Stereo Automotive Radios
I CB Transmitter/Receivers
I Short-Wave Receivers
I Mobile Communications Equipment
3845
Always order by complete part number:
Part Number
Function
A3845ELW
Stereo Noise Blanker, Extended Temp. Range
A3845SLW
Stereo Noise Blanker, Standard Temp. Range
GROUND
13
14
15
16
17
19
12
18
20
11
1
2
3
8
9
4
5
6
7
10
RF AGC
SUPPLY
CC
V
AUDIO DELAY
RF BIAS
AUDIO BLANK
TIME (R)
AUDIO BLANK
TIME (C)
RF BLANK
TIME
AUDIO OUT1
NO
CONNECT
NO
CONNECT
NC
NC
Dwg. PS-003-1A
RF GATE
LOW
RF IN
RF BYPASS
AUDIO IN1
AUDIO OUT2
AUDIO IN 2
NO
CONNECT
NC
RF GATE
HIGH
DET
NOISE
DIFFERENTIATOR


Similar Part No. - A3845SLW

ManufacturerPart #DatasheetDescription
logo
Allegro MicroSystems
A3848EEQ ALLEGRO-A3848EEQ Datasheet
75Kb / 3P
   DUAL-CONVERSION AM RECEIVER
More results

Similar Description - A3845SLW

ManufacturerPart #DatasheetDescription
logo
Siemens Semiconductor G...
TDA4340X SIEMENS-TDA4340X Datasheet
671Kb / 15P
   Stereo Decoder/Noise Blanker
logo
NXP Semiconductors
TDA1592 PHILIPS-TDA1592 Datasheet
191Kb / 20P
   PLL stereo decoder and noise blanker
1996 May 31
TDA1591 PHILIPS-TDA1591 Datasheet
167Kb / 20P
   PLL stereo decoder and noise blanker
1996 Sep 02
logo
Hitachi Semiconductor
HA12181FP HITACHI-HA12181FP Datasheet
147Kb / 21P
   AM Radio Noise Reduction System
logo
Renesas Technology Corp
HA12181FP RENESAS-HA12181FP Datasheet
302Kb / 20P
   AM Radio Noise Reduction System
logo
Maxim Integrated Produc...
MAX2180A MAXIM-MAX2180A Datasheet
745Kb / 1P
   AM/FM Car Antenna Low-Noise Amplifier
Rev 2; 3/14
logo
Fairchild Semiconductor
SS9016 FAIRCHILD-SS9016 Datasheet
62Kb / 4P
   AM Converter, FM/RF Amplifier of Low Noise.
logo
TEMIC Semiconductors
U4254BM TEMIC-U4254BM Datasheet
167Kb / 12P
   Low-Noise AM/FM Antenna Impedance Matching IC
logo
KEC(Korea Electronics)
KIA2051FN KEC-KIA2051FN Datasheet
206Kb / 12P
   BIPOLAR LINEAR INTEGRATED CIRCUIT (AM PULSE NOISE REDUCTION)
logo
ATMEL Corporation
U4254BM-M ATMEL-U4254BM-M Datasheet
168Kb / 14P
   Low-noise AM/FM Antenna Impedance Matching IC
More results


Html Pages

1 2 3 4 5 6 7 8


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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