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ETC
ETC

SL486 Datasheet

INFRA RED REMOTE CONTROL PREAMPLIFIER


SL486 Datasheet Preview


THIS DOCUMENT IS FOR MAINTENANCE
PURPOSES ONLY AND IS NOT
RECOMMENDED FOR NEW DESIGNS
Page 1

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
ANODE
BUFFER
5·4k
2·4k
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
Page 2

SL486
ELECTRICAL CHARACTERISTICS
These characteristics are guaranteed over the following conditions (unless otherwise stated):
TAMB = 125°C, VCCI = VCCO = VCC = 14·5V to 17·0V, VEEI = VEEO = VEE = 0V
Characteristic
Pin
Min.
Value
Typ.
Max.
Units
Conditions
Supply current (see note 1)
Low voltage supply wrt VEEI &VEEO
High voltage supply wrt VREGIN
Int. regulated voltage, VREG, wrt
VCCO
|VCCI2VCCO|
Minimum sensitivity of differential
input
Common mode rejection
Maximum signal input
AGC range
Output and Stretch output internal
pull-up resistance
Stretch output pulse width, tP
Temperature coefficient of RX
Output low voltage
Output high voltage
Stretch output low voltage
Stretch output high voltage
VCCI supply rejection
4,7
4 3·513ID
4,7
4,7 4·5
4,7 8·4
13 5·9
4,7
1,16
1,16
1,16
9·0
74·0
168·0
3·0
9, 11
11
9
9 VCCO20·5
11
11 VCCO20·1
4
6·5
4·213ID
8·5
6·2
35
4·0
68·0
55·0
9·0
513ID
10
9·5
18
6·5
1·5
1·1
2·3
18·5
42·0
mA VCC = 5·0V, ID = 1·0µA
mA VCC = 4·5V, ID<1·5mA
mA VCC = 18V, ID = 1·0µA, VREGIN = 0V
V
V VEEI = VEEO = VREG (see Figs. 4 & 6)
V VCCO1VREGIN = 116V
V
V TAMB = 170°C
nA ID = 1·0µA
nA ID = 100µA
nA ID = 0·5mA
dB
mA (pk)
dB
k
2·4 ms Capacitance pin 9 to pin 10 (C8 on
Figs. 4 and 8) = 10nF;
tP
2RX
C8
loge
1·5
VCC
ms
where RX = 200k625%
0·7 %/°C and RX = internal resistance)
VEEO10·35 V
ISINK = 0·2mA max.
V ISOURCE = 5µA
VEEO10·5 V
ISINK = 1·6mA max.
V ISOURCE = 5µA, output open circuit
1·5 V (pk) Ripple amplitude at 100Hz,
VREGIN = 0V
0·8 V (pk) Ripple amplitude at 100Hz,
VEEO and VEEI = 0V
NOTE 1. ID = IR diode forward current
2
Page 3
Part Number SL486
Manufactur ETC
Description INFRA RED REMOTE CONTROL PREAMPLIFIER
Total Page 7 Pages
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