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參數(shù)資料
| 型號(hào)： | UPC1830 |
| 廠商： | NEC Corp. |
| 元件分類(lèi)： | DC/DC變換器 |
| 英文描述： | RSO-S_D(Z) Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 05V; Output Voltage (Vdc): 15V; Power: 1W; 2:1 and 4:1 Wide Input Voltage Ranges; 1kVDC, 2kVD & 3kVDC Isolation; UL94V-0 Package Material; Continuous Short Circuit Protectionwith Current Foldback; Low Noise; No External Capacitor needed; Efficiency to 83% |
| 中文描述： | 過(guò)濾含視頻色度，同步信號(hào)處理LSI兼容NTSC制式/ PAL制 |
| 文件頁(yè)數(shù)： | 39/44頁(yè) |
| 文件大?。?/td> | 338K |
| 代理商： | UPC1830 |
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μ
PC1830
39
8. OPERATING PRECAUTIONS
8.1
μ
PC1830 External Components
(1) Resistors
Use E24 series resistors (approximately 5% precision) of 1/4 W or higher.
(2) Capacitors
Ceramic capacitors of 1000 pF or below
Capacitors used for the time constant circuit. Basically use E12 series (10% precision) ones with the center value
= 0 in nominal temperature characteristic.
Ceramic capacitors of 1000 pF or higher
Equivalent to capacitors for non-critical time constant circuits and for clamp, and bypass capacitors between power
supply and GND. Use E12 series (10% precision) ones. Use a type whose capacitance is not extremely affected
by temperature variations (ie. with an excellent temperature characteristic).
Electrolytic capacitors
Use E6 series (20% precision) ones. Use ones whose capacitance is not extremely affected by temperature
variations (ie. with an excellent temperature characteristic).
(3) Crystal resonators
Use crystal resonators of 16 pF load type as shown below.
For PAL
For NTSC : 3.579 545 MHz (model name: TQC203A-8R (HC-49/U-10 type), manufactured by Toyo
Communication Equipment Co., Ltd.)
: 4.433 619 MHz (model name: HC-49/U, manufactured by Kinseki, Ltd.)
Note that use of crystal resonators other than the above may deteriorate electrical characteristics.
(4) Ceramic resonators
Use ceramic resonators as shown below.
CSB500 F23 (manufactured by Murata Mfg. Co., Ltd.)
Note that use of ceramic resonators other than the above may deteriorate mainly electrical characteristics of the sync.
section.
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