參數(shù)資料
型號： GP2W0004XP
英文描述： Optoelectronic
中文描述： 光電
文件頁數(shù)： 4/15頁
文件大?。?/td> 127K
代理商： GP2W0004XP
GP2W0004YP/XP
Infrared Transceiver
4
IrDA Technical Information
ELECTRICAL DESIGN APPLICATION TIPS
Figure 6 shows the recommended application circuit
and passive values for GP2W0004YP. The table in
Figure 6 provides some approximate external passive
values for design reference. See the specification for
complete optical/electrical characteristic data.
Application Circuit and External Passives
The application circuit and external passives shown
in Figure 6 enable GP2W0004YP to operate at both
one meter and in 20 cm low power option communica-
tion mode at V
CC
= 3.0 V.
Shutdown Mode
The ‘Shutdown’ pin (Pin 4) is an active HIGH termi-
nal and controls the power saving mode as shown in
Table 2 and Figure 7.
Shutdown mode affects the power consumption of
the Receiver circuits and inhibits the transmitter LED.
The two circuits are internally connected. The transmit-
ter circuit does not conduct current during the shut-
down mode.
After shutdown, the Receiver circuits require 40 ms
to wakeup.
Figure 6. Application Circuit
6
5
4
3
2
1
CX
1
R
LED
V
LEDA
SD
TxD
RxD
GP2W0004YP-7
V
CC
CX
2
COMPONENTS
NOTE:
All recommended values are for V
CC
= 3.0 V
RECOMMENDED VALUES
CX
1
CX
2
47
μ
F, 6.3 V or as appropriate
R
LED
1,500 pF, 25 V, or as needed
2.2
±5%, 1/2 W,1 meter at V
CC
= 3.0 V
33
±1%, 1/8 W,
20 cm low power option at V
CC
= 3.0 V
Table 2. Shutdown Pin Functions
INPUT
PERFORMANCE
LOW
HIGH
Open
Normal Mode
Shutdown Mode
Shutdown Mode
Figure 7. Shutdown-Receiver Wakeup Time
GP2W0004YP-8
SD
RxD
NORMAL
V
IH
V
IL
HIGH
(or OPEN)
LOW
40 ms
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