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參數(shù)資料
| 型號(hào)： | LA1650C |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP18 |
| 封裝： | DIP-18 |
| 文件頁(yè)數(shù)： | 5/14頁(yè) |
| 文件大小： | 125K |
| 代理商： | LA1650C |
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The following three techniques are practical test procedures. Note that since the output from the LA1650 pin 16 is
inverted from the value of the time code, an inverter must be inserted between the output and the microcontroller.
Continuously output a signal with the value 1 (fc = 40 kHz, AM modulation (90%), fm = 1 Hz (square wave, duty =
50%)) and read out the value 1 from the LA1650. Then, lower the signal generator level until the LA1650 can no
longer correctly output the 1 level. The minimum signal generator level at which correct reception occurs is the
sensitivity.
When monitoring the LA1650 output signal with a microcontroller, monitor the output pulse width for the range listed
in table 1. The output signal should be observed to be a 1 Hz signal, with a period of 1000 ±25 ms. (See figure 3.)
Continuously output a signal with the value 0 (fc = 40 kHz, AM modulation (90%), fm = 1 Hz (square wave, duty =
80%)) and read out the value 0 from the LA1650. Then, lower the signal generator level until the LA1650 can no
longer correctly output the 0 level. The minimum signal generator level at which correct reception occurs is the
sensitivity.
When monitoring the LA1650 output signal with a microcontroller, monitor the output pulse width for the range listed
in table 2. The output signal should be observed to be a 1 Hz signal, with a period of 1000 ±25 ms. (See figure 4.)
Create a simulated time standard radio signal (fc = 40 kHz, AM modulation (90%), fm = 1 Hz time code (this signal
you will have to create yourself)) and verify that the time is modified correctly. The sensitivity is then the minimum
level for which the time is modified correctly.
When monitoring the LA1650 output signal with a microcontroller, monitor the output pulse width for the ranges listed
in table 3. The output signal should be observed to be a 1 Hz signal, with a period of 1000 ±25 ms. (See figure 4.)
No. 6310-13/14
LA1650, 1650C
1000 ±25 ms
480 to 650 ms
TCO rise (reference)
A12777
Table 1 Signal Value 1 Range
Item
min
typ
max
unit
Output pulse width
480
500
650
ms
(500 ms input)
1000 ±25 ms
750 to 970 ms
TCO rise (reference)
A12778
Table 2 Signal Value 0 Range
Item
min
typ
max
unit
Output pulse width
750
800
970
ms
(800 ms input)
Table 3 Time Code Signal Output Ranges
Item
min
typ
max
unit
Output pulse width
480
500
650
ms
(500 ms input)
Output pulse width
750
800
970
ms
(800 ms input)
Output pulse width
180
200
400
ms
(200 ms input)
Figure 3 Time Code Value 1 Signal Output
Figure 4 Time Code Value 0 Signal Output
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA1650 | SPECIALTY CONSUMER CIRCUIT, UUC18 |
| LA1652C | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| LA1652FN | SPECIALTY CONSUMER CIRCUIT, DSO16 |
| LA1652V | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| LA1652V | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1652C | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC Time Code Reception IC |
| LA1654C | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC Time Code Reception IC |
| LA1654C-X1 | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| LA1654FN | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Time Code Reception IC |
| LA165B-R-4SRG.X-AS-PF | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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