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| 型號(hào)： | ISL54210IRTZ-T |
| 廠商： | Intersil |
| 文件頁(yè)數(shù)： | 4/21頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SWITCH DUAL SPDT HS 10-TDFN |
| 標(biāo)準(zhǔn)包裝： | 6,000 |
| 功能： | 開(kāi)關(guān) |
| 電路： | 2 x SPDT |
| 導(dǎo)通狀態(tài)電阻： | 35 歐姆 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 3.6 V |
| 電流 - 電源： | 7µA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 10-VFDFN 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 10-TDFN/MLP（3x3） |
| 包裝： | 帶卷 (TR) |
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12
FN6661.2
March 18, 2010
USB Switches
The two USB switches (D+, D-) are 5.5Ω bidirectional
switches that were specifically designed to pass
high-speed USB differential signals typically in the range
of 0V to 400mV. The switches have low capacitance and
high bandwidth to pass USB high-speed signals
(480Mbps) with minimum edge and phase distortion to
meet USB 2.0 signal quality specifications. See Figure 20
for high-speed eye pattern taken with switch in the signal
path.
These switches can also swing rail-to-rail and pass USB
full-speed signals (12Mbps) with minimal distortion. See
Figure 21 for full-speed eye pattern taken with switch in
the signal path.
The maximum signal range for the USB switches is from
-1.5V to VDD. The signal voltage at D- and D+ should not
be allowed to exceed the VDD voltage rail or go below
ground by more than -1.5V.
The USB switches are active (turned ON) whenever the
VBUS voltage is ≥ to VDD + 0.8V. VBUS is internally pulled
low, so when VBUS is floating the USB switches are OFF.
ISL54210 Operation
The following discusses using the ISL54210 in the
VDD SUPPLY
The DC power supply connected at VDD (Pin 10 for
TQFN, Pin 1 for TDFN) provides the required bias
voltage for proper switch operation. Its voltage should be
kept in the range of 2.7V to 3.6V when used in a
USB/Audio application to ensure you get proper
switching when the VBUS voltage is at its lower limit of
4.4V.
In a typical USB/Audio application for portable battery
powered devices, the VDD voltage will come from a
battery or an LDO and be in the range of 2.7V to 4.3V.
For best possible USB full-speed operation (12Mbps), it is
recommended that the VDD voltage be ≥2.7V in order to
get a USB data signal level above 2.7V.
Before power-up and power-down of the ISL54210 part,
the VBUS and CTRL control pins should be driven to
ground or tri-stated. This will put the switch in the mute
state which turns all switches OFF and activates the click
and pop circuitry. Which will minimize transients at the
speaker loads during power-up and power-down.
LOGIC CONTROL
The state of the ISL54210 device is determined by the
voltage at the VBUS pin (Pin 1 for TQFN, Pin 2 for TDFN)
and the CTRL pin (Pin 9 for TQFN, Pin 10 for TDFN). The
part has three states or modes of operation: Audio Mode,
USB Mode and Mute Mode. Refer to the “Truth Table” on
The VBUS pin and CTRL pin are internally pulled low
through 4MΩ resistors to ground and can be left floating
or tri-stated. The CTRL control pin is only active when
VBUS is logic “0”.
Logic Control Voltage Levels:
VBUS = Logic “0” (Low) when VBUS ≤ VDD + 0.2V or
Floating.
VBUS = Logic “1” (High) when VBUS ≥ VDD + 0.8V
CTRL = Logic “0” (Low) when ≤ 0.5V or Floating.
CTRL = Logic “1” (High) when ≥ 1.4V
Audio Mode
If the VBUS pin = Logic “0” and CTRL pin = Logic “1”, the
part will be in the Audio mode. In Audio mode, the L
(left) and R (right) 2.5Ω audio switches are ON, the D-
and D+ 5.5Ω switches are OFF (high impedance) and the
audio click and pop circuitry is OFF (high impedance).
In a typical application, VDD will be in the range of 2.7V
to 3.6V and will be connected to the battery or LDO of
the MP3 player or cellphone. When a headphone is
plugged into the common connector, nothing gets
connected at the VBUS pin (its internally pulled low) and
as long as the CTRL = Logic “1” the ISL54210 part
remains in the audio mode and the audio drivers of the
player can drive the headphones and play music.
USB Mode
If the VBUS pin = Logic “1” and CTRL pin = Logic “0” or
Logic “1” the part will go into USB mode. In USB mode,
the D- and D+ 5.5Ω switches are ON and the L and R
2.5Ω audio switches are OFF (high impedance).
When a USB cable from a computer or USB hub is
connected at the common connector, the voltage at the
VBUS pin will be driven with the USB VBUS voltage which
will be in the range of 4.4V to 5.25V. The ISL54210 part
will go into the USB mode. In USB mode, the computer
or USB hub transceiver and the MP3 player or cellphone
USB transceiver are connected and digital data will be
able to be transmitted back and forth.
When the USB cable is disconnected the ISL54210
automatically turns the D+ and D- switches OFF.
Mute Mode
If the VBUS pin = Logic “0” and CTRL pin = Logic “0”, the
part will be in the Mute mode. In the Mute mode, the
audio switches and the USB switches are OFF (high
impedance) and the audio click and pop circuitry is ON.
Before powering down or powering up of the audio
CODECs drivers, the ISL54210 should be put in the Mute
mode. In Mute mode transients present at the L and R
signal pins due to the changing DC voltage of the audio
drivers will not pass to the headphones preventing clicks
and pops in the headphones. See “AC-Coupled click and
Before power-up and power-down of the ISL54210 part,
the VBUS and CTRL control pins should be driven to
ground or tri-stated. This will put the switch in the mute
state, which turns all switches OFF and activates the click
and pop circuitry. This will minimize transients at the
ISL54210
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL54211IRTZ-T | IC SWITCH DUAL SPDT HS 10-TDFN |
| ISL54212IRTZ-T | IC USB SWITCH DUAL SPDT 10TDFN |
| ISL54213IRTZ-T | IC USB SWITCH DUAL SPDT 10TDFN |
| ISL54214IRUZ-T | IC USB SWITCH DUAL SP3T 12UTQFN |
| ISL54215IRUZ-T | IC USB SWITCH DUAL SPDT 10UTQFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL54210IRUZ-T | 功能描述:IC SWITCH HS DUAL SPDT 10-TQFN RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 模擬開(kāi)關(guān)，多路復(fù)用器，多路分解器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:視頻交叉點(diǎn)開(kāi)關(guān) 電路:1 x 8:6 導(dǎo)通狀態(tài)電阻:- 電壓電源:單電源 電壓 - 電源，單路/雙路(±):3.135 V ~ 5.25 V 電流 - 電源:55mA 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:24-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:24-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁(yè)面:1214 (CN2011-ZH PDF) 其它名稱(chēng):FMS6502MTC24XTR |
| ISL54211 | 制造商:INTERSIL 制造商全稱(chēng):Intersil Corporation 功能描述:MP3/USB 2.0 High Speed Switch with Negative Signal Handling/Click and Pop Suppression |
| ISL54211EVAL1Z | 功能描述:EVAL BOARD 1 FOR ISL54211 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估演示板和套件 系列:* 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| ISL54211IRTZ | 功能描述:IC SWITCH DUAL SPDT HS 10-TDFN RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 模擬開(kāi)關(guān)，多路復(fù)用器，多路分解器 系列:- 應(yīng)用說(shuō)明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:250 系列:- 功能:開(kāi)關(guān) 電路:單刀單擲 導(dǎo)通狀態(tài)電阻:48 歐姆 電壓電源:單電源 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V 電流 - 電源:5µA 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:托盤(pán) |
| ISL54211IRTZ-T | 功能描述:IC SWITCH DUAL SPDT HS 10-TDFN RoHS:是 類(lèi)別:集成電路 (IC) >> 接口 - 模擬開(kāi)關(guān)，多路復(fù)用器，多路分解器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:36 系列:- 功能:多路復(fù)用器 電路:2 x 4:1 導(dǎo)通狀態(tài)電阻:75 歐姆 電壓電源:單/雙電源 電壓 - 電源，單路/雙路(±):2 V ~ 12 V，±2 V ~ 6 V 電流 - 電源:- 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:20-SOIC W 包裝:管件 |
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