- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372181 > SP3508CF Rugged 3.3V, 20Mbps, 8 Channel Multiprotocol Transceiver with Programmable DCE/DTE and Termination Resistors PDF資料下載
參數(shù)資料
| 型號： | SP3508CF |
| 英文描述： | Rugged 3.3V, 20Mbps, 8 Channel Multiprotocol Transceiver with Programmable DCE/DTE and Termination Resistors |
| 中文描述： | 堅固3.3，20Mbps的，8通道多協(xié)議收發(fā)器，具有可編程DCE的/ DTE和終端電阻 |
| 文件頁數(shù)： | 25/33頁 |
| 文件大?。?/td> | 313K |
| 代理商： | SP3508CF |
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頁當前第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
25
Date: 06/14/04
SP3508 Enhanced WAN Multi–Mode Serial Transceiver Copyright 2004 Sipex Corporation
Phase 2
-V
SS1
transfer -Phase two of the clock connects the negative terminal of C2 to the V
SS1
storage capacitor
and the positive terminal of C2 to ground, and transfers the negative generated voltage to C
VSS1
. This
generated voltage is regulated to -5.5V. Simultaneously, the positive side of the capacitor C1 is switched
to V
CC
and the negative side is connected to ground.
FEATURES
Phase 3
-V
DD
charge storage -The third phase of the clock is identical to the first phase-the charge transferred in
C1 produces -V
CC
in the negative terminal of C1 which is applied to the negative side of the capacitor C2.
Since C2+ is at V
CC
, the voltage potential across C2 is 2xV
CC
.
V
CC
= +3V
–6V
V
SS
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
+
+
+
+
–
–
–
–
C
VDD
C
VSS1
Figure 46. Charge Pump - Phase 2.
V
CC
= +3V
–3V
+3V
–3V
V
SS1
Storage Capacitor
V
DD
Storage Capacitor
C
1
C
2
+
+
+
+
–
–
–
–
C
VSS1
C
VDD
Figure 47.Charge Pump - Phase 3.
Phase 4
-V
DD
transfer -The fourth phase of the clock connects the negative terminal of C2 to ground, and transfers
the generated 5.5V across C2 to C
VDD
, the V
DD
storage capacitor. This voltage is regulated to +5.5V. At
the regulated voltage, the internal oscillator is disabled and simultaneously with this, the positive side of
capacitor C1 is switched to V
CC
and the negative side is connected to ground, and the cycle begins again.
The charge pump cycle will continue as long as the operational conditions for the internal oscillator are
present. Since both V+ and V- are separately generated from V
CC
; in a no-load condition V+ and V- will
be symmetrical. Older charge pump approaches that generate V- from V+ will show a decrease in the
magnitude of
V- compared to V+ due to the inherent inefficiencies in the design. The clock rate for the charge pump
typically operates at 250kHz. The external capacitors can be as low as 1
μ
F with a 16V breakdown voltage
rating.
相關PDF資料 |
PDF描述 |
|---|---|
| SP3508EB | Evaluation Board Manual |
| SP3508EF | Rugged 3.3V, 20Mbps, 8 Channel Multiprotocol Transceiver with Programmable DCE/DTE and Termination Resistors |
| SP3508 | Cermet Potentiometer; Resistance Max:50kohm; Resistance Tolerance:+/- 10 %; Power Rating:1W; Voltage Rating:350V; Series:149; Temperature Coefficient:+/-150 ppm; Resistor Element Material:Cermet; Leaded Process Compatible:Yes |
| SP385A | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| SP385ACA | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SP3508CF-L | 功能描述:外圍驅動器與原件 - PCI 3.3V 20MBPS 8CH PROG DCE/DTE RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| SP3508EB | 功能描述:LIN 收發(fā)器 20Mbps Multiprotocol Transceiver 8Ch 3.3V RoHS:否 制造商:NXP Semiconductors 工作電源電壓: 電源電流: 最大工作溫度: 封裝 / 箱體:SO-8 |
| SP3508EF | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Rugged 3.3V, 20Mbps, 8 Channel Multiprotocol Transceiver with Programmable DCE/DTE and Termination Resistors |
| SP3508EF-L | 功能描述:外圍驅動器與原件 - PCI 20MBPS 8CH MULTI 0-70C RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| SP350ACP | 制造商:Hammond Power Solutions 功能描述:Control Transformer, 350VA, 600,480-120x240 |
發(fā)布緊急采購，3分鐘左右您將得到回復。