These devices pass signals from VCC to as low as
參數(shù)資料
型號(hào): MAX4745ELB+T
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 12/12頁(yè)
文件大?。?/td> 0K
描述: IC SWITCH DUAL SPDT 10UDFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
Low Voltage Analog Switches Overview
標(biāo)準(zhǔn)包裝: 1
功能: 音頻開(kāi)關(guān)
電路: 2 x SPDT
導(dǎo)通狀態(tài)電阻: 950 毫歐
電壓電源: 單電源
電壓 - 電源,單路/雙路(±): 1.8 V ~ 5.5 V
電流 - 電源: 300nA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 10-WFDFN
供應(yīng)商設(shè)備封裝: 10-uDFN(2x2)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: MAX4745ELB+TDKR
Analog Signal Levels
These devices pass signals from VCC to as low as
VCC - 5.5V, including signals below ground with minimal
distortion and very little change in on-resistance (see the
Typical Operating Characteristics). The switches are bidi-
rectional, so the NO_, NC_, and COM_ terminals can be
used as either inputs or outputs.
COM_ Protection with VCC = 0V
(MAX4744H/MAX4745H/MAX4746H)
This feature prevents any damage to the device due to
improper power-supply sequencing. The protection
applies if a signal is applied on COM_ when VCC is less
than 0.5V. The switch is not protected if VCC goes
above 0.5V due to parasitic capacitive coupling or any
leakage between COM_ and VCC. The signal at COM_
ranges between (VCC - 6.0V) to 6.0V under protection
conditions.
Click-and-Pop Suppression
The MAX4744/MAX4744H have a shunt resistor on all
their NO and NC terminals to automatically discharge
any capacitance when they are not connected to COM.
The shunt resistor reduces audible click-and-pop
sounds that occur when switching between audio
sources. Audible clicks and pops are caused when a
step DC voltage is switched into the speaker. The DC
step transients can be reduced by automatically dis-
charging the side that is not connected to the COM ter-
minal, reducing any residual DC voltage and reducing
clicks and pops.
MAX4744/MAX4744H/MAX4745/MAX4745H/MAX4746H
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
_______________________________________________________________________________________
9
tr < 5ns
tf < 5ns
50%
0V
LOGIC
INPUT
RL
COM_
GND
CB_
CL INCLUDES FIXTURE AND STRAY CAPACITANCE
VOUT = VN_
(
RL
)
RL + RON
VNC_ OR VNO_
VCC
tOFF
0V
NO_
OR NC_
0.8 x V0UT
0.2 x VOUT
tON
VOUT
SWITCH
OUTPUT
LOGIC
INPUT
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
VCC
CL
VCC
VOUT
MAX4744/MAX4745/
MAX4744H/MAX4745H/
MAX4746H
Figure 2. Switching Time
50%
VCC
0V
LOGIC
INPUT
VOUT
0.9 x VOUT
tBBM
LOGIC
INPUT
RL
GND
CL INCLUDES FIXTURE AND STRAY CAPACITANCE
NO_
CB_
NC_
VOUT
VCC
CL
COM_
MAX4744/MAX4745/
MAX4744H/MAX4745H/
MAX4746H
VNC_ = VNO_
Figure 3. Break-Before-Make Interval
Test Circuits/Timing Diagrams
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參數(shù)描述
MAX4745HELB+ 制造商:Maxim Integrated Products 功能描述:
MAX4745HELB+T 功能描述:模擬開(kāi)關(guān) IC Dual SPDT Audio Clickless Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻(最大值):0.1 Ohms 切換電壓(最大): 開(kāi)啟時(shí)間(最大值): 關(guān)閉時(shí)間(最大值): 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX4746HELB+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX4746HELB+T 功能描述:模擬開(kāi)關(guān) IC Dual SPDT Audio Clickless Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻(最大值):0.1 Ohms 切換電壓(最大): 開(kāi)啟時(shí)間(最大值): 關(guān)閉時(shí)間(最大值): 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16
MAX4747EBE 制造商:Maxim Integrated Products 功能描述:50OHM LOW-VOLTAGE QUAD SPST/DUAL - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: