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参数资料
| 型号： | ISL54217EVAL1Z |
| 厂商： | Intersil |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD FOR ISL54217 |
| 标准包装： | 1 |
| 主要目的： | 接口，3:1 多路复用器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ISL54217 |
| 主要属性： | 2 x SP3T 模拟开关 |
| 次要属性： | 2.7 V ~ 4.6 V 电源 |
| 已供物品： | 板 |
11
FN6817.4
June 17, 2010
Block Diagram
Detailed Description
The ISL54217 device consists of dual SP3T (single
pole/triple throw) analog switches. It operates from a
single DC power supply in the range of 2.7V to 4.6V. It
was designed to function as differential 3-to-1
multiplexer to select between two different USB
differential data signals and audio L and R stereo signals.
It comes in a tiny TQFN and TQFN packages for use in
MP3 players, PDAs, cell phones, and other personal
media players.
A device consists of two 2.3Ω audio switches and four
6.2Ω 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 high-speed USB differential data
signals with minimal edge and phase distortion.
The ISL54217 was specifically designed for MP3 players,
personal media players and cellphone applications that
need to combine the stereo audio and USB data channels
into a single shared connector, thereby saving space and
component cost. The “Block Diagram” of this
functionality is shown on page 11.
The ISL54217 contains two logic control pins (C1 and C0)
that determine the state of the device. The part has the
following five states or modes of operation: All
SWITCHES OFF; USB1; USB2; Audio; and Audio Mute.
These states are discussed in detail in “Logic Control” on
A detailed description of the various types of switches are
provided in “Audio Switches” beginning on page 11.
Audio Switches
The two audio switches (L, R) are 2.3Ω switches that can
pass signals that swing below ground.
Over a signal range of ±1V (0.707VRMS) with
VDD > 2.7V, these switches have an extremely low rON
resistance variation. They can pass ground referenced
audio signals with very low distortion (<0.05% THD+N)
when delivering 15.6mW into a 32Ω headphone speaker
performance curves.
Crosstalk between the L and R audio switches over the
frequency range of 20Hz to 20kHz when driving a 32Ω
load is <-88dB. These switches have excellent
off-isolation >105dB over the audio band when
connected to 32Ω loads and 77dB when connected to
20kΩ loads (In Audio Mute mode). See Figures 25 and
26 in “Typical Performance Curves” section beginning on
The audio drivers should be connected at the L and R
side of the switch (pins 2 and 3) and the speaker loads
should be connected at the COM side of the switch (pins
7 and 8).
The switches have click and pop circuitry on the L and R
side that is activated when the part comes out of Audio
mode by taking the C1 and C0 logic pins low (All OFF
mode). The ISL54217 should be put in this mode before
powering down or powering up of the audio CODEC
drivers. In this mode the audio, USB1, USB2 switches will
be OPEN (OFF) and the audio click and pop circuitry will
be ON. The high off-isolation of the audio switches along
with the click and pop circuitry will isolate the transients
generated during power-up and power down of the audio
CODECs from getting through to the headphones thus
CLICK/
ISL54217
USB
TRANSCEIVER
HIGH-SPEED
AUDIO
US
B/H
E
AD
P
H
O
N
E
JA
C
K
COM -
COM +
C1
GND
1D+
1D-
R
L
VDD
C0
LOGIC CONTROL
CONTROLLER
CODEC
VBUS
3.3V
2D-
USB
4M
Ω
50k
Ω
HIGH-SPEED
TRANSCEIVER
2D+
50k
Ω
1k
Ω
POP
#2
#1
OR
UART
TRANSCEIVER
ISL54217
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL54217IRTZ | 功能描述:IC USB SWITCH DUAL SP3T 12TQFN 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) |
| ISL54217IRTZ-T | 功能描述:IC USB SWITCH DUAL SP3T 12TQFN 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) |
| ISL54217IRUZ-T | 功能描述:IC USB SWITCH DUAL SP3T 12UTQFN 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) |
| ISL54220 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High-Speed USB 2.0 (480Mbps) Multiplexer |
| ISL54220IRTZ | 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:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:250 系列:- 功能:开关 电路:单刀单掷 导通状态电阻:48 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:5µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:48-LQFP 供应商设备封装:48-LQFP（7x7） 包装:托盘 |
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