a3845slw Allegro MicroSystems, Inc., a3845slw Datasheet

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a3845slw

Manufacturer Part Number
a3845slw
Description
Am Noise Blanker
Manufacturer
Allegro MicroSystems, Inc.
Datasheet
AUDIO BLANK
AUDIO DELAY
AUDIO BLANK
AUDIO OUT
Supply Voltage, V
Package Power Dissipation,
Operating Temperature Range, T
Storage Temperature Range,
RF BYPASS
CONNECT
AUDIO IN
TIME (R)
TIME (C)
RF BIAS
RF AGC
RF IN
P
Suffix ‘ELW’ . . . . . . . .
Suffix ‘SLW’ . . . . . . . .
T
NO
S
D
1
1
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . -55 C to +125 C
10
1
2
3
4
5
6
7
8
9
NC
CC
. . . . . . . . . . . . . .
DET
V
NC
NC
CC
-40 C to +85 C
-20 C to +85 C
20
19
18
17
16
15
14
13
12
11
A
SUPPLY
NO
CONNECT
RF GATE
LOW
RF GATE
HIGH
GROUND
RF BLANK
TIME
NO
CONNECT
NOISE
DIFFERENTIATOR
AUDIO OUT
AUDIO IN
1.78 W
Dwg. PS-003-1A
12 V
2
2
3845
Always order by complete part number:
Part Number
A3845ELW
A3845SLW
RF Blanking to 30 MHz
Single-Channel or Stereo Audio Blanking
Adjustable RF and Audio Blanking Time
Adjustable Audio Blanking Delay
Sample-and-Hold MOS Audio Gates
Internal Voltage Regulation
Minimum External Components
AM and AM-Stereo Automotive Radios
CB Transmitter/Receivers
Short-Wave Receivers
Mobile Communications Equipment
Function
Stereo Noise Blanker, Extended Temp. Range
Stereo Noise Blanker, Standard Temp. Range
AM NOISE BLANKER

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a3845slw Summary of contents

Page 1

... Internal Voltage Regulation Minimum External Components AM and AM-Stereo Automotive Radios CB Transmitter/Receivers 12 V Short-Wave Receivers Mobile Communications Equipment 1.78 W Always order by complete part number: Part Number Function A3845ELW Stereo Noise Blanker, Extended Temp. Range A3845SLW Stereo Noise Blanker, Standard Temp. Range AM NOISE BLANKER ...

Page 2

... 0.1 AUDIO OUT 9 1 0.1 10 AUDIO IN 1 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1988, 2000 Allegro MicroSystems, Inc. MIXER OUT dV/dt DET 17 RF GATE HIGH GATE +4 V LOW AUDIO AUDIO OUT 1 ...

Page 3

Test Characteristic Leads Supply Voltage Range 20 Quiescent Supply Current 20 RF INPUT AMPLIFIER: Trigger Threshold 1 Modulation Threshold 1 Detector Rise Time 13 RF SWITCH: ON Resistance 17-18 OFF Resistance 17-18 Time Delay 1-17 AUDIO SWITCHES: Attenuation 10-9, 11-12 ...

Page 4

AM NOISE BLANKER (for circuit design information only) Lead Number Function Bypass 3 RFBias 4 RF AGC 5 Audio Delay 6 Audio Blank Time ( Connection 8 Audio BlankTime (C) 9 Audio ...

Page 5

... PULSE The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the informa- tion being relied upon is current ...

Page 6

AM NOISE BLANKER 0 -5 -10 -15 0.1 1 INPUT FREQUENCY IN MHz Symbol Antenna Local Osc Mixer T 5 Detector L 2 ® Registered trademark of ...

Page 7

AM NOISE BLANKER ...

Page 8

AM NOISE BLANKER 20 0.2992 0.2914 0.020 1 0.013 0.0926 0.1043 0.0040 20 7.60 7.40 0.51 1 0.33 2.65 2.35 0.10 NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing tolerance is ...

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