- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16274 > 78Q8430STEM#DB (Maxim Integrated Products)EVAL BOARD 78Q8430 PDF資料下載
參數(shù)資料
| 型號： | 78Q8430STEM#DB |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 82/88頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVAL BOARD 78Q8430 |
| 標準包裝： | 1 |
| 系列： | * |
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頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁當前第82頁第83頁第84頁第85頁第86頁第87頁第88頁
DS_8430_001
78Q8430 Data Sheet
Rev. 1.2
83
8
Isolation Transformers
Table 35: Isolation Transformers
Name
Value
Condition
Turns Ratio
1 CT : 1 CT
± 5%
Open-Circuit Inductance
350 H (min)
@ 10 mV, 10 kHz
Leakage Inductance
0.40 H (max)
@ 1 MHz (min)
Inter-Winding Capacitance
12 pF (max)
D.C. Resistance
0.9
(max)
Insertion Loss
0.4 dB (typ)
0 - 65 MHz
HIPOT
1500 Vrms
Two simple 1:1 isolation transformers are all that are required at the line interface, but transformers
with integrated common-mode choke are recommended for exceeding FCC requirements. Table 35
gives the recommended line transformer characteristics. The 100Base-TX amplitude specifications
assume a transformer loss of 0.4 dB. For the transmit line transformer with higher insertion losses, up to
1.2 dB of insertion loss can be compensated by selecting the appropriate setting in the Transmit
Amplitude Selection bits in register MR19[11:10].
9
Reference Crystal
If the internal crystal oscillator is to be used, a crystal with the characteristics given in Table 36 should be
chosen.
Table 36: Reference Crystal
Name
Value
Units
Frequency
25.00000
MHz
Load Capacitance*
4**
pF
Frequency Tolerance
≤ ±50 per IEEE 802.3 requirement
PPM
Oscillation Mode
Parallel Resonance, Fundamental Mode
Parameters at 25
oC
± 2 oC ; Drive Level = 0.5 mW
Shunt Capacitance (max)
10
pF
Motional Capacitance (min)
10
pF
Series Resistance (max)
60
Spurious Response (max)
> 5 dB below main within 500 kHz
* Equivalent differential capacitance across the XTLP/XTLN pins.
** If a crystal with a larger load is used, external shunt capacitors to ground should be added to
make up the equivalent capacitance difference.
*** System vendors need to select the proper crystal according to their applications, such as
operating environment, product lifetime, and etc since crystal aging, operating temperature, and
other factors can affect the crystal frequency tolerance.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CM453232-470JL | INDUCTOR 47UH 140MA SMD |
| CM453232-3R9JL | INDUCTOR 3.9UH 330MA SMD |
| UPT2D221MHD | CAP ALUM 220UF 200V 20% RADIAL |
| UVR2V470MHD | CAP ALUM 47UF 350V 20% RADIAL |
| REC6-2415DRW/R8/A | CONV DC/DC 6W 18-36VIN +/-15VOUT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 78-R3 | 功能描述:3M SCOTCHCAST REENTERABLE SIGNAL 制造商:3m 系列:* 零件狀態(tài):在售 標準包裝:1 |
| 78-R4 | 功能描述:3M SCOTCHCAST REENTERABLE SIGNAL 制造商:3m 系列:* 零件狀態(tài):在售 標準包裝:1 |
| 78RB02 | 功能描述:SWITCH 2 POS DIP RECESSED UNSLD RoHS:否 類別:開關(guān) >> DIP 系列:78 特色產(chǎn)品:RDM Series Rotary DIP Switch 標準包裝:70 系列:RDM 電路:十六進制 位置數(shù):16 觸點額定電壓:0.1A @ 42VDC 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 可清洗:是 其它名稱:EG4977-5RDMAR16PIT |
| 78RB02RA | 制造商:Grayhill 功能描述:DIP, 2 POS, FLUSH ACTUATOR, SPST, GOLD - Rail/Tube |
| 78RB02RAT | 功能描述:SWITCH DIP RECESSED 2POS UNSLD RoHS:是 類別:開關(guān) >> DIP 系列:78 特色產(chǎn)品:RDM Series Rotary DIP Switch 標準包裝:70 系列:RDM 電路:十六進制 位置數(shù):16 觸點額定電壓:0.1A @ 42VDC 觸動器類型:用于工具旋轉(zhuǎn) 觸動器電平:凹槽式 安裝類型:通孔 方向:頂部觸動 可清洗:是 其它名稱:EG4977-5RDMAR16PIT |
發(fā)布緊急采購，3分鐘左右您將得到回復。