- 您現在的位置：買賣IC網 > PDF目錄98267 > TMS3637D (TEXAS INSTRUMENTS INC) INFRARED, TRANSMITTER/RECEIVER IC, PDSO8 PDF資料下載
參數資料
| 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： | 26/54頁 |
| 文件大小： | 384K |
| 代理商： | TMS3637D |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁當前第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
6–1
6 Application Information
6.1
General Applications
In this section an example schematic is shown for each of the four transmission media categories for which
the device can be configured. These schematics help to define the capabilities of the TMS3637. When
configured for infrared, one transmitter works for both normal and modulated modes. In addition, a
recommended programming station is shown. The schematics are:
Direct-wired connection of transmitter/receiver
–
Two wires
–
Four wires
Infrared coupling of transmitter/receiver
–
Normal transmission mode
–
Modulated transmission mode
Radio frequency (RF) coupling of transmitter/receiver
RF receiver and decoder
Programming station used to program the TMS3637
–
6.2
Direct-Wire Connection of Transmitter and Receiver
The transmitter and receiver can be connected together by a direct two-wire or four-wire line. Both
configurations are described in the following paragraphs.
6.2.1
Two-Wire Direct Connection
Table 6–1 list the parts for the schematic of a two-wire direct connection of the transmitter and receiver
shown in Figure 6–1. Only two wires are required, primarily because the transmitted code is superimposed
on the source voltage delivered to the transmitter, and the transmitter uses its own internal oscillator. The
transmitter is configured as a normal continuous transmitter and the content of the configuration EEPROM
cells is:
CA
CB
CC
CD
CE
CF
CG
CH
CI
111000000
The device uses its internal oscillator to clock the data out (transmitter) and clock data in (receiver). The
oscillating frequency of the transmitter is approximately 5.7 kHz. With VCC = 5 V, the transmitted code on
OUT (point A) is a square waveform between 0 V (internal connection to GND) and 5 V. At point B, the
maximum value is 5 V (when OUT is open) and the minimum value is 4.8
× 10K/(10K+220) = 4.892 V (when
OUT is at 0 V). The voltage swing is then 5 V – 4.892 V = 108 mV. The voltage swing must not be much
greater than 100 mV because this is superimposed on the source voltage used to power the device. At point
C, the maximum value is VCC/2 = 2.5 V and the minimum value is 2.5 V–0.108 V = 2.4 V due to the coupling
through capacitor C2. At point D, R6 and C4 act as a low-pass filter (with a cutoff frequency of approximately
11 kHz) so that the code passes but higher frequency noise is suppressed. The receiver is configured as
an analog normal 1-code Q-state noninverting receiver and the content of the EEPROM cells is:
CA
CB
CC
CD
CE
CF
CG
CH
CI
010000000
The receiver is used in the noninverting mode. Using OUT on the transmitter to transmit the code inverts
it, but the internal analog amplifier in the receiver (CF = 0) reinverts the signal. The signal path between the
transmitter and receiver does not invert the signal. The result is a signal that is noninverted at the internal
logic controller of the receiver, hence use CI = 0 for a noninverting receiver.
As required, the oscillating frequency of the receiver is about ten times greater than that of the 57 kHz
transmitter. This is easily set by keeping Rosc constant but reducing Cosc to one-tenth of its original value.
The signal on IN is internally amplified and the gain is calculated using equation 1:
G
+
1
) 39
32.5E6
103E-18
1.27E9
1
) 39
32.5E6
103E-18
31.7E3
+ 13
(1)
相關PDF資料 |
PDF描述 |
|---|---|
| TMS57014ADWBLE | DUAL, SERIAL INPUT LOADING, 18-BIT DAC, PDSO28 |
| TMX320C6474ZUN | SPECIALTY CONSUMER CIRCUIT, PBGA561 |
| TN5D01A | 5 A SWITCHING REGULATOR, 180 kHz SWITCHING FREQ-MAX, ZFM5 |
| TN5D41A | 5 A SWITCHING REGULATOR, 180 kHz SWITCHING FREQ-MAX, ZFM5 |
| TN5D41 | 5 A SWITCHING REGULATOR, 180 kHz SWITCHING FREQ-MAX, PZFM5 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TMS3705A1DRG4 | 功能描述:RFID應答器 Transponder base station IC RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| TMS3705ADR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TMS3705BDRG4 | 功能描述:RFID應答器 LF Reader IC RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| TMS3705DDRQ1 | 功能描述:IC RFID BASE STATION LF 16SOIC 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態:在售 類型:RFID 閱讀器 頻率:134.2kHz 標準:- 接口:- 電壓 - 電源:5V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商器件封裝:16-SOIC 標準包裝:1 |
| TMS3705DR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
發布緊急采購，3分鐘左右您將得到回復。