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参数资料
| 型号： | ISL54400IRUZ-T |
| 厂商： | Intersil |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC USB SWITCH DUAL SPDT 10UTQFN |
| 标准包装： | 1 |
| 功能： | USB 开关 |
| 电路： | 2 x SPDT |
| 导通状态电阻： | 6 欧姆 |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 3.6 V |
| 电流 - 电源： | 4.5µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-UFQFN |
| 供应商设备封装： | 10-UTQFN（2.1x1.6） |
| 包装： | 标准包装 |
| 产品目录页面： | 1247 (CN2011-ZH PDF) |
| 其它名称： | ISL54400IRUZ-TDKR |
10
FN6240.3
July 12, 2006
Application Block Diagram
Detailed Description
The ISL5440X family of devices are dual single pole/double
throw (SPDT) analog switches that operate from a single
power supply. They were designed to function as dual 2 to 1
multiplexers to select between USB differential data signals
and audio L and R stereo signals. They come in tiny TQFN
and TDFN packages for use in MP3 players, PDAs,
cellphones, and other personal media players.
All devices in this family consist of two 1
normally closed
(NC) audio switches and two 5
normally open (NO) USB
switches. The audio switches can accept signals that swing
below ground. They were designed to pass audio left and
right stereo signals, that are ground referenced, with minimal
distortion. The USB switches were designed to pass
full-speed USB differential data signals with minimal edge
and phase distortion.
The ISL54400 and ISL54401 were specifically designed for
MP3 players, personal media players and cellphone
applications that need to combine the audio headphone jack
and the USB data connector into a single shared connector,
thereby saving space and component cost. A typical
application block diagram of this functionality is shown
above. The ISL54400 and ISL54401 incorporate circuitry for
the detection of the USB VBUS voltage, which is used to
switch between the audio CODEC drivers and USB
transceiver of the MP3 player or cellphone. The ISL54400
contains additional circuitry to generate the required USB
VTERM of 3.3V for use with the USB speed setting pull-up
resistor.
The ISL54402 is an audio/data switch and its functionality is
typical of a standard dual SPDT device.
A detailed description of the two types of switches and of
each part type in the ISL5440x family are provided in the
sections below. The USB transmission and audio playback
are intended to be mutually exclusive operations.
Audio Switches
The two NC (normally closed) audio switches (L, R, NCx)
are 1
switches that can pass signals that swing below
ground. Crosstalk between the audio switches is < -110dB
and has a -3dB bandwidth of 394MHz.
The recommended maximum signal range is from -1.5V to
1.5V. You can apply positive signals greater than 1.5V but
the RON resistance of the switch increases rapidly above
1.5V. The audio signal should not be allowed to exceed the
VDD rail or swing more negative than -1.5V.
Over a signal range of ±1V these switches have an
extremely low RON flatness. They can pass ground
referenced audio signals with very low distortion (<0.01%
THD+N) when delivering 12mW into a 32
headphone
curves.
These switches are uni-directional switches. The audio
sources should be connected at the NC side of the switch
(pins 7 and 8) and the speaker loads should be connected at
the COM side of the switch (pins 3 and 4).
For the ISL54400 and ISL54401 parts the audio switches are
active (turned ON) whenever the VBUS voltage is ≤ to VDD +
0.2V. The VBUS pin is internally pulled low through a
pulldown resistor allowing the VBUS pin to float. When the
VBUS pin is floating the audio switches are ON.
Note: Whenever the audio switches are ON the USB
transceivers connected at D- and D+ (pins 8 and 9) need to
be in the high impedance state or static high or low state to
keep from interfering with the audio transmission.
For the ISL54402 part the NC1 audio switch is active (turned
ON) whenever logic pin IN1 (pin 10) is LOW. The NC2 audio
switch is active (turned ON) whenever the logic pin IN2
(pin 2) is LOW. Unlike the ISL54400 and ISL54401 parts
ISL54400
USB
TRANSCEIVER
FULL-SPEED
CODEC
D-/L
D+/R
VBUS
GND
D-
D+
L
R
VDD
VTERM
USB/HEADPHONE
JACK
ISL54400, ISL54401, ISL54402
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL54400IRZ | 功能描述:IC USB SWITCH DUAL SPDT 10TDFN 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 |
| ISL54400IRZ-T | 功能描述:IC USB SWITCH DUAL SPDT 10TDFN 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 |
| ISL54401 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Low Voltage, Dual SPDT, USB/Audio Switches with Negative Signal Capability |
| ISL54401EVAL1Z | 功能描述:EVALUATION KIT FOR ISL54401 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 |
| ISL54401IRUZ-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:- 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 |
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