SC9148B CMOS developed infrared remote control transmitter. This funct
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INFRARED REMOTE CONTROL TRANSMITTER
SC9148B CMOS developed infrared remote control transmitter. This functions, total commands transimitted commands continuous keys multiple keyings possible commands single shot keys.
SC9148B
SOP-16
FEATURES
Wide operating voltage range(VDD=2.2V 5.0V) CMOS structure assures extremely power dissipation Mulitiple keying possible Less external parts Adaptable other Models Code Bits available oscillator constructed only connecting Ceramic Resonater oscillation circuit housed.
DIP-16
ODERING INFORMATION
SC9148B SC9148S
Advanced version. functions same SC9148. DIP-16 package. Advanced version. SOP-16 package.
BLOCK DIAGRAM
Decoder Devider
Hold/Single pulse signal generator
Output Synthesizing Circuit
Input Circuit Timing Signal generating circuit Code signal Generating Circuit CODE
TEST
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
ABSOLUTE MAXIMUM RATINGS
Characteristic
Supply Voltage(Pin Input/Output Voltage Power Dissipation Operating Temperature Storage Temperature
SC9148B
Symbol
VIN,VOUT Tamb Tstg
Value
Vss-0.3V VDD+0.3V -55~+125 VDD=3.0V,Unless otherwise specified)
Unit
ELECTRICAL CHARACTERISTICS(Tamb=25°C
Parameter
Operating Supply Voltage Operating supply current Quiescent Current comsuption K1~K6 Input Level CODE Voltage Level K1~K6 Input Level Current Level CODE Input Level TEST Current Level T1~T3 Output Level Current Level Input Termianl Output Terminal Output Level Current Level
Symbol
fOSC
Test conditions
function operation without load stop
Unit
VIH=3.0V VIL=0V VIH=3.0V VIL=0V VOH=2.0V VOL=3.0V VOH=2.0V VOL=3.0V
-1.0 -1.0 -500 -0.1
Feedback resistor Oscillation frequency
1,16
Symbol
GND,VDD non-XT
Terminal
Termial
Function/operation
Supply Voltage Terminal Terminal OSC, used connecting 455kHz ceramic resonater etc. (with built-in feedback resistor) input Terminal matrix. keys connected T1~T3 K1~K6 (with built-in pull-down resistor) Digit timing output terminal matrix. Terminal matching code between transmitting receiving Keep this terminal open Transmitting signal output. Modulation made bits cycle 38kHz carrier wave.
K1~K6
Input terminal
10~12
T1~T3 CODE Non-TEST
Timing Signal Output Terminal Code input Terminal Test terminal Transmitting output terminal
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
FUNCTIONAL OSCILLATION CIRCUIT
SC9148B
self-bias type amplifier means CMOS inverter been housed, oscillation circuit constructed when ceramic resonater connected. When oscillation frequency 455kHz, carrier wave transmitting signal 38kHz, oscillation oscillation circuit kept stopped unless keys operated, thus reducing power consumption.
C1=C2=50~150pF
INPUT
keys connected input K1~K6 matrix means timing signal T1~T3 Multiple keying possible keys connected line sextet inputs output (Output becomes continuous pulses Between timing signal lines priority been decided order keys connected lines have priority input made through more than keys single signal preferentially output order K1~K6 Further keys connected lines single second signal transmitted unless input made again after released once.
(S1)
(S2)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
MATRIX No.1~6
Continuous output with pressed, multiple keying possible.
SC9148B
No.7~18
These keys single-shot keys when input made, signal output only time.
TRANSMISSION COMMAND
Transmission command word 12-bits configuration. C1~C3 code bits adaptable many models, H,S1 continous signal single-shot signal codes ,and D1~D6 input data codes 6-bits.
DATA CODE
DATA
Output Form
DATA
Output Form
Single-shot Single-shot Single-shot Single-shot Single-shot Single-shot Single-shot Single-shot Single-shot
Continuous Continuous
Continuous
Continuous Continuous Continuous Single-shot Single-shot Single-shot
multiple keying possible .1~6 capable output commands through combination D1~D6 data 7~18 single-shot keys output commands commands output through combination continuous (multiple keying possible single-shot
CODE BITS(C1,C2,C3)
Code made terminal with diodes connected through timing terminals CODE CODE "0","0" USED
CODE
(C3)
(C2)
(C1)
C1,C2 SC9150A C2,C3 SC9149A
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
SC9148B
Data code become when diodes connected CODE Terminal through Timing Signal Terminals ~T3, when connected above diagram data SC9148P code bits However SC9149P that receiving SC9150P (DIP able only code bits respectively Therefore diodes must connected that code data SC9148P agreement with receiving Note code data used SC9150P SC9149P necessary transmit diodes must connected
TRANSMITTING WAVEFORM BASIC TRANSMITTING WAVEFORM fosc=455kHz) C1~C3: CODE READER H,S1,S2: HOLD/SINGLE PULSE READER K1~K6: INPUT READER
Basic transmitting waveform 12-bits serial data configuration shown above. time each decided shown below oscillation frequency fosc means non-XT.
DISTINCTION
word above transmission command configuration (010100100100).
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
SINGLE-SHOT SIGNAL
SC9148B
Single-shot
When single-shot keys depressed above single-shot signal transmitted cycles, transmitting output ends.
CONTINUOUS SIGNAL
Continuous 208a
When continuous keys depressed, above continuous signal cycles output, repeatedly output 208a pause cycles pause 208a.
CARRIER WAVE
About 50~100mA current normally applied through infrared order extend infrared reaching distance. Therefore, time, when shortened could possible leads reduction power consumption. this when single-shot continuous signal transmitting, each switching carrier duty 1/3, output after pulse modulated. Carrier(fc) decided oscillation frequency fosc means non-XT, fc=fosc/12(Hz), fc=38kHz fosc=455kHz.
Transmitting Signal Pulse Modulated Transmitting Signal
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
APPLICATION CIRCUIT
2SA1015
SC9148B
VDD=3V
2SC1815 TLN105
TEST
CODE
100pF
100pF
100pF
100pF
100pF
100pF
K1~K6 MATRIX
100pF
T1~T3
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
100pF
IN4148
SC9148B
PACKAGE OUTLINE
SC9148B
UNIT:mm
2.54
DIP-16-300-2.54
6.35
1.52 +0.3 19.55
7.62
degree
0.5MIN 3.00MIN
0.46 0.08
SOP-16-225-1.27
1.80MAX
4.36MAX
1.27MAX
8.89
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
10.15
0.25
1.27
+0.05 -0.02
5.72
0.25
UNIT:mm
0.25
0.05
Attach Revision History
Data
2000.12.31 2002.05.27 2002.09.10
SC9148B
Original
Description
Modify "SC9148A" "SC9148B" Modify "PACKAGE OUTLINE" Modify "APPLICATION CIRCUIT"
Page
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Rev: 2002.09.10.
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