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参数资料
| 型号： | ISL54220IRTZ-T |
| 厂商： | Intersil |
| 文件页数： | 18/18页 |
| 文件大小： | 0K |
| 描述： | IC USB SWITCH DUAL SPDT 10TDFN |
| 标准包装： | 6,000 |
| 功能： | USB 开关 |
| 电路： | 2 x SPDT |
| 导通状态电阻： | 8 欧姆 |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 5.5 V |
| 电流 - 电源： | 9nA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN/MLP（3x3） |
| 包装： | 带卷 (TR) |
9
FN6819.1
February 4, 2010
Application Block Diagram
Detailed Description
The ISL54220 device is a dual single pole/double throw
(SPDT) analog switch configured as a DPDT that operates
from a single DC power supply in the range of 2.7V to
5.5V.
It was designed to function as a dual 2-to-1 multiplexer
to select between two USB high-speed differential data
signals in portable battery powered products. It is offered
in a TDFN, MSOP, and a small TQFN packages for use in
MP3 players, cameras, PDAs, cell phones, and other
personal media players. The device has an enable pin to
open all switches.
The part consists of four 6Ω high speed (HSx) switches.
These switches have high bandwidth and low capacitance
to pass USB high-speed (480Mbps) differential data
signals with minimal edge and phase distortion. They can
also swing from 0V to VDD to pass USB full speed
(12Mbps) differential data signals with minimal
distortion.
The ISL54220 was designed for MP3 players, cameras,
cell phones, and other personal media player applications
that have multiple high-speed or full-speed transceivers
sections and need to multiplex between these USB
sources to a single USB host (computer). A typical
application block diagram of this is shown on page 9.
A detailed description of the HS switches is provided in
the following section.
High-Speed (HSx) Switches
The HSx switches (HSD1-, HSD1+, HSD2-, HSD2+) are
bi-directional switches that can pass rail-to-rail signals.
When powered with a 3.3V supply, these switches have a
nominal rON of 6Ω over the signal range of 0V to 400mV
with a rON flatness of 0.94Ω. The rON matching between
the HSD1 and HSD2 switches over this signal range is
only 0.12Ω, ensuring minimal impact by the switches to
USB high speed signal transitions. As the signal level
increases, the rON switch resistance increases. At signal
level of 3.3V, the switch resistance is nominally 129Ω.
See Figures 7, 8, 9, 10 in the “Typical Performance
Curves” beginning on page 11.
The HSx switches were specifically designed to pass USB
2.0 high-speed (480Mbps) differential signals in the
range of 0V to 400mV. They have low capacitance and
high bandwidth to pass the USB high-speed signals with
minimum edge and phase distortion to meet USB 2.0
high speed signal quality specifications. See Figure 11 in
the “Typical Performance Curves” on page 12 for USB
High-speed Eye Pattern taken with switch in the signal
path.
The HSx switches can also pass USB full-speed signals
(12Mbps) with minimal distortion and meet all the USB
requirements for USB 2.0 full-speed signaling. See
Figure 12 in the “Typical Performance Curves” on
page 13 for USB Full-speed Eye Pattern taken with
switch in the signal path.
The maximum normal operating signal range for the
HSx switches is from 0V to VDD. The signal voltage
should not be allow to exceed the VDD voltage rail or go
below ground by more than -0.3V for normal operation.
However, in the event that the USB 5.25V VBUS voltage
gets shorted to one or both of the D-/D+ pins, the
ISL54220 has special fault protection circuitry to prevent
damage to the ISL54220 part. The fault circuitry allows
the signal pins (D-, D+, HS1D-, HS1D+, HS2D-, HS2D+)
to be driven up to 5.5V while the VDD supply voltage is in
the range of 0V to 5.5V. In this condition the part draws
< 500A of current and causes no stress to the IC. In
addition when VDD is at 0V (ground) all switches are OFF
PORTABLE MEDIA DEVICE
ISL54220
USB
TRANSCEIVER
HIGH-SPEED
D-
D+
SEL
GND
HSD1-
HSD1+
HSD2-
HSD2+
VDD
OE
LOGIC CIRCUITRY
CONTROLLER
USB
TRANSCEIVER
FULL-SPEED
VBUS
D-
D+
GND
OR
FULL-SPEED
HIGH_SPEED
OR
US
B
CON
N
ECTOR
#1
#2
ISL54220
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL54220IRUEVAL1Z | 功能描述:EVALUATION BOARD FOR ISL54220 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| ISL54220IRUZ-T | 功能描述:IC USB SWITCH DUAL SPDT 10UTQFN RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 其它有关文件:STG4159 View All Specifications 标准包装:5,000 系列:- 功能:开关 电路:1 x SPDT 导通状态电阻:300 毫欧 电压电源:双电源 电压 - 电源，单路/双路(±):±1.65 V ~ 4.8 V 电流 - 电源:50nA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:7-WFBGA，FCBGA 供应商设备封装:7-覆晶 包装:带卷 (TR) |
| ISL54220IUZ | 功能描述:IC USB SWITCH DUAL SPDT 10MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:36 系列:- 功能:多路复用器 电路:2 x 4:1 导通状态电阻:75 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:- 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 供应商设备封装:20-SOIC W 包装:管件 |
| ISL54220IUZ-T | 功能描述:IC USB SWITCH DUAL SPDT 10MSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 其它有关文件:STG4159 View All Specifications 标准包装:5,000 系列:- 功能:开关 电路:1 x SPDT 导通状态电阻:300 毫欧 电压电源:双电源 电压 - 电源，单路/双路(±):±1.65 V ~ 4.8 V 电流 - 电源:50nA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:7-WFBGA，FCBGA 供应商设备封装:7-覆晶 包装:带卷 (TR) |
| ISL54221 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High-Speed USB 2.0 (480Mbps) Multiplexer |
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