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参数资料
| 型号： | MAX4745ELB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH DUAL SPDT 10UDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program Low Voltage Analog Switches Overview |
| 标准包装： | 1 |
| 功能： | 音频开关 |
| 电路： | 2 x SPDT |
| 导通状态电阻： | 950 毫欧 |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 1.8 V ~ 5.5 V |
| 电流 - 电源： | 300nA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN |
| 供应商设备封装： | 10-uDFN（2x2） |
| 包装： | 标准包装 |
| 其它名称： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4745HELB+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX4745HELB+T | 功能描述:模拟开关 IC Dual SPDT Audio Clickless Switch RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体: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:模拟开关 IC Dual SPDT Audio Clickless Switch RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体: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: |
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