Document
:0755-61169046 QQ635222749
SCTX2B/SDRX2BD (NO:S&CIC0515)
FIVE FUNCTIONS REMOTE CONTROLLER
Features
Wide operating SCTX2B voltage range: 2.4V to 12V SCTX2B very low stand-by current Few external components needed SDRX2BD built- in 3.8v zener
General Description
The SCTX2B/RX2BD are a pair of CMOS LSIs designed for remote controlled car applications. The SCTX2B/RX2BD have five control keys controlling the motions ( i.e. forward, backward, rightward, leftward, and the turbo function ) of the remote controlled car.
Absolute Maximum Ratings
DC Supply Voltage-----------------------------0.3V to 5.0V Input/Output Voltage---------------------------GND –0.2V to VDD+0.2V Operating temperature------------------------- -10℃ to 60℃ Storage Temperature---------------- -25℃ to 125℃ Comment* Never allow a stress the values listed under “Absolute Maximum Ratings”, otherwise the device would suffer from a permanent damage. Nor is a stress at the listed value be allowed persist over a period, since an extended exposure to the absolute maximum rating condition may also affect the reliability of the device, if not causing a damage thereof.
Oscillation Frequency
SCTX2B VDD=3.0V, Rosc=250K ,Fosc=110KHz~130KHz。 SDRX2BD VDD=3.8V, Rosc=220K ,Fosc=110KHz~130KHz。
Electrical Characteristics
SCTX2B( VDD=4.5V,Fosc=128KHz,TA=25℃ ,unless otherwise specified.) Parameter Operating Voltage Operating Current Stand-by Current DC O/P Driving Current AC O/P Driving Current symbol VDD Idd Istb Idrive Idrive Min. 2.4V 0.5 mA -2.5mA 2.5mA Typ. 4V -----Max. 5V 1mA 3uA --1KHz
Effect Encoding Frequency Faudio 500Hz Variation SDRX2BD( VDD=4.5V,Fosc=128KHz,TA=25℃ , built-in 3.8v zener.) page 1 of 5
:0755-61169046 QQ635222749
SCTX2B/SDRX2BD (NO:S&CIC0515)
FIVE FUNCTIONS REMOTE CONTROLLER
Parameter Operating Voltage Operating Current DC O/P Driving Current AC O/P Driving Current Effect Decoding Frequency Variation symbol VDD Idd Idrive Isink Itolerance Min. 2.4V -1mA 1mA -15% Typ. 3.8V ----Max. 12.0V 30mA --15%
Pin description
IC:SDRX2BD IC:SCTX2B
VO2
RIGHTB TESTB GND BACK WARDB FORWARDB TURBOB SC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 LEFTB GND FOSC SI OSC1 OSC1 OSC0 OSC0 PC RIGHT VDD LEFT SO RDB
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VI2
VO1
VI1 VDD TURBO FORWARD BACK WARD LDB
2
SCTX2B PIN Symbol 1 RIGHTB 2 TESTB 3 GND 4 BACK WARDB 5 FORWARDB 6 TURBOB 7 SC 8 SO 9 VDD 10 PC 11 12 13 14 OSCO OSCI FOSC LEFTB
function 4 The rightward function will be selected when this pin is connected to GND. Test pin Negative power supply. The backward function will be selected when this pin is connected to GND. The forward function will be selected when this pin is connected to GND. The turbo function will be selected when this pin is connected to GND. Output pin of the encoding signal with carrier frequency Output pin of the encoding signal. Positive power supply Power control output pin. When any function key is pulled low, PC will be high logic. Oscillator output pin Oscillator input pin Test pin The leftward function will be selected when this pin is connected t GND
3
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:0755-61169046 QQ635222749
SCTX2B/SDRX2BD (NO:S&CIC0515)
FIVE FUNCTIONS REMOTE CONTROLLER
SDRX2BD pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 symbol VO2 GND SI OSCI 2 OSCO RIGHT LEFT RDB LDB 2 BACK WARD FORWARD TURBO VDD VI1 VO1 VI2 function Inverter 2 output pin for power amplify Negative power supply. Input pin of the encoding signal Oscillator input pin 3 4 Oscillator output pin Rightward output pin Leftward output pin Right disable pin Left disable pin 3 Backward output pin Forward output pin TURBO output pin Positive power supply Inverter 1 input pin for signal amplify Inverter 1 output pin for signal amplify Inverter 2 input pin for signal amplify
1
PAD location
VO1 VI1 VDD
TURBO
FOR
BACK
LOB
SO VDD
SC
TUR
VI2
PC
SCTX2B
OSCO
FOR
SDRX2BD SUB TO VDD
SUB TO VDD
OSCI BACK
FOSC
LEFT
RIGHT
TEST
GND
VO2 VSS SI OSCI OSCO
RIGHT ROB
LEFT
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:0755-61169046 QQ635222749
SCTX2B/SDRX2BD (NO:S&CIC0515)
FIVE FUNCTIONS REMOTE CONTROLLER
APPLICATION CIRCUIT:
1、for SDRX2BD:
1 2 3 4 5 6
R12/100R
R
C17/100U R15/220R 9V Q11/928A
C16/220U
ANTENNA
C15/220U
R11/4.7K 470nh
Q2/9014D R14/10K
Q12/A1160
Q13/A1160
R16/100R R21/100R
11T
C1/10P
R10/5K6
103
C2/5P
MD1 104 R20/5.6K Q4/C1815
C10/100n
Q6/C1815
Q1/1815GR
R2/5K6 R4/5.6m
Q3/C2500
Q5/C2500
C3/47P
C5/471
R9/100R
R5/2.2K L1/3.3uH
C13/1u/10v
R17/5.6K R3/4K7 C6/104 Q14/A1160 R1/360R 16 C7/30P 1 9
R6/2.2m
Q15/A1160
C4/332
SDRX2BD
8 R25/100R MD2
R28/100R Q10/C1815
R7/2K2
R8/220K
C9/104
C8/102
R24/4.7K Q8/C1815 Q7/C2500 Q9/C2500
R29/4.7K
Title
Size B
Number
Revision
1
Operating Voltage 4.5V 6.0V 9.0V 12.0V
2
3
Resister for supply current of VDD 180Ω 270Ω 470Ω 560Ω
4
Date: File: 5
1-Nov-2006 Sheet of E:\ \ \ -0\ZBO\SCTX2B(SDRX2BD).Ddb Drawn By : 6
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:0755-61169046
QQ635222749
SCTX2B/SDRX2BD (NO:S&CIC0515)
FIVE FUNCTIONS REMOTE CONTROLLER.