參數(shù)資料
型號: TMS3637D
廠商: TEXAS INSTRUMENTS INC
元件分類: 搖控器
英文描述: INFRARED, TRANSMITTER/RECEIVER IC, PDSO8
封裝: PLASTIC, MS-012AA, SOIC-8
文件頁數(shù): 35/54頁
文件大?。?/td> 384K
代理商: TMS3637D
6–9
Table 6–5. Infrared Receiver Component Functions (Modulated Transmission Mode)
DEVICE
FUNCTION
U1
Demodulator TDA3048 (or equivalent)
U2
TMS3637 configured as a normal logic (1-code) Q-state inverting receiver
R1
Current-limiting resistor for U1
R2
Resistor on TIME that, in conjunction with C2, determines OUT pulse duration on U2.
R3
Resistor on OSCR that, in conjunction with C3, determines the internal oscillator frequency of U2.
R4
Power-supply current-limiting resistor
C1
Power-supply filter capacitor
C2
Capacitor on TIME that, in conjunction with R2, determines OUT pulse duration on U2.
C3
Capacitor on OSCC that, in conjunction with R3, determines the internal oscillator frequency of U2.
Q1
Infrared phototransistor for received code
D2
Diode that is used to prevent back-EMF in L2 from sourcing current to OUT.
L2
Coil of relay R1
RY1
Relay, 12 V, SPDT
R2
22 k
OSCR OSCC TIME
GND
C7
1 nF
VCC
IN
CEX
OUT
U2 (receiver)
R2
1 M
C2
470 nF
D2
VCC
C1
100
F
+
47 nF
10 k
10 k
47 nF
L2
RY1
R4
10
R1
22
1.5 nF
10 nH
6.3 nF
22 nF
Q1
12 V
U1 (TDA3048)
87
6
5
12
3
4
Figure 6–6. Infrared Modulated Receiver
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