SL486 데이터 시트보기 (PDF) - Unspecified
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SL486 Datasheet PDF : 7 Pages
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3055-2.2
SL486
INFRA RED REMOTE CONTROL PREAMPLIFIER
(Supersedes version in April 1994 Consumer IC Handbook, HB3120 - 2.0)
The SL486 is a high gain preamplifier designed to form an
interface between an infra-red receiving diode and the digital input
of remote control receiving circuits. The device contains two other
circuit elements, one to provide a stretched output pulse facility
and a voltage regulator to allow operation from a wide range of
supplies.
FEATURES
s Fast Acting AGC Improves Operation In Noisy
Environments
s Differential Inputs Reduce Noise Pick-up and Improve
Stability
s Gyrator Circuit Allows Operation in Environments with
High Brightness Background Light Levels
s Output Pulse Stretcher for use with Microprocessor
Decoders
s On-chip Regulator allows Operation from Wide Range
of Power Supplies
s Low Noise Output
ORDERING INFORMATION
SL486 NA DP
SL486 NA MP
DIODE CATHODE 1
16 DIODE ANODE
GYRATOR C2 2
15 1ST STAGE DECOUPLE
GYRATOR C1 3
14 INPUT VEE (VEEI)
INPUT VCC (VCCI)
2ND STAGE DECOUPLE
4
13
SL486
5
12
OUTPUT VEE (VEEO)
REGULATOR INPUT (VREGIN)
4TH STAGE DECOUPLE 6
11 STRETCH OUTPUT
OUTPUT VCC (VCCO) 7
10 STRETCH INPUT
AGC DECOUPLE 8
9 OUTPUT
DP16
MP16
Fig. 1 Pin connections - top view
ABSOLUTE MAXIMUM RATINGS
Supply voltage, VCCI
Supply voltage, VCCO
Regulator input voltage, VREGIN
Output current
Stretch output current
Operating temperature range
Storage temperature
110V wrt VEEI
110V wrt VEEO
220V wrt VCCO
5mA
5mA
0°C to 170°C
255°C to1150°C
VCCI
4
GYRATOR
C1 C2
32
2ND STAGE
DECOUPLE
5
4TH STAGE
DECOUPLE
6
VCCO
7
GYRATOR
PULSE
STRETCH
11 STRETCH
OUTPUT
10 STRETCH
INPUT
DIODE 1
CATHODE
DIFFERENTIAL
DIODE 16 INPUT STAGE
BUFFER
2·4k
ANODE
5·4k
9
15k
OUTPUT
AGC PEAK
DETECTOR
REGULATOR
VREG*
14
VEEI
15
1ST STAGE
DECOUPLE
8
AGC
DECOUPLE
13
12
VEEO
*When regulator is used
REGULATOR
INPUT
(VREGIN)
(see Application Notes).
Fig. 2 SL486 block diagram
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