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參數(shù)資料
| 型號： | LT1328 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC 0 to 70 |
| 中文描述： | 4Mbps的IrDA紅外接收器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 274K |
| 代理商： | LT1328 |
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.
APPLICATIO
S I
N
FOR
ATIO
U
W
U
To do this, make C1 4.7
μ
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 10
8
) 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
μ
F
C2
4.7
μ
F
5V
D1
TEMIC
BPV22NF
NC
C5
4.7
μ
F
相關(guān)PDF資料 |
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| LT1330IJW | 5V RS232 Transceiver with 3V Logic Interface and One Receiver Active in Shutdown |
| LT1330 | 5V RS232 Transceiver with 3V Logic Interface and One Receiver Active in Shutdown |
| LT1330C | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC 0 to 70 |
| LT1330CG | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC 0 to 70 |
| LT1330CNW | 5V RS232 Transceiver with 3V Logic Interface and One Receiver Active in Shutdown |
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| LT1328CMS8#TRPBF | 功能描述:IC RECEIVER 4MBPS IRDA IR 8-MSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
| LT1328CS8 | 功能描述:IC RECEIVER 4MBPS IRDA IR 8-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
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