參數(shù)資料
型號: LT1328CS8
廠商: Linear Technology
文件頁數(shù): 10/12頁
文件大?。?/td> 0K
描述: IC RECEIVER 4MBPS IRDA IR 8-SOIC
標準包裝: 100
類型: 接收器
驅動器/接收器數(shù): 0/1
規(guī)程: 紅外(IRDA)
電源電壓: 4.5 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SOIC
包裝: 管件
7
LT1328
In situations where long range is not a requirement, a very
simple IR link can be made using unmodulated NRZ
(nonreturn to zero) data. The circuit is shown in Figure 5.
A BER (bit-error rate) transmitter and receiver was used to
test the data-link error rates for data rates of 375kbps.
Because the NRZ data can have long stretches of continu-
ous “1” data, the low frequency corner of the LT1328
photodiode receiver is set to 14Hz to prevent pulse-top
distortion.
APPLICATIONS INFORMATION
WU
U
To do this, make C1 4.7
F. This is the only change from
a standard IrDA-SIR receiver. A range of 24" (with a bit
error rate lower than 1 in 108) is achieved with no
additional processing beyond that provided by the LT1328.
A caution: when using unmodulated data, it is possible to
get a 100% duty cycle on the LED transmitter, so be sure
that the LED can handle this.
Figure 5. Simple NRZ Data Link
5V
24"
R1
100
R2
10k
R3
3.9
1/2W
Q3
2N7002
BIT ERROR RATE
TRANSMITTER/RECEIVER
1328 F05
D2
HSDL 4220
OUT
IN
375bps NRZ DATA
1
2
3
4
8
7
6
5
C6
1000pF
LT1328
C4
4.7
F
C2
4.7
F
5V
D1
TEMIC
BPV22NF
NC
C5
4.7
F
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