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参数资料
| 型号： | MAX4548 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 数字信号处理 |
| 英文描述： | Fixed-Point Digital Signal Processors 240-BGA MICROSTAR |
| 中文描述： | 串行控制、三组3x2音频/视频交叉点开关 |
| 文件页数： | 12/20页 |
| 文件大小： | 273K |
| 代理商： | MAX4548 |
Audio off-isolation is -85dB at 20kHz, crosstalk is
-85dB at 20kHz, and video off-isolation is -62dB at
10MHz. The SA, SB, and SC (shunt) inputs further
improve off-isolation, allowing for the addition of exter-
nal shunt capacitors to connect the outputs to AC
grounds. When using the bias resistors, MID_ inputs
improve crosstalk by providing an AC ground at the
common bias points. Resistance from the bias points to
the inputs allows AC signals to pass through the device
and improve crosstalk performance (refer to the
Functional Diagram. These devices feature a clickless
operation mode for noiseless audio switching. Use the
serial interface to select the clickless or standard-
switching mode for each individual output.
Applic ations Information
The MAX4548/MAX4549 are divided into five functional
blocks: the control-logic block, three switch-matrix
blocks, and the bias-resistor block (see Functional
Diagram. The control-logic block accepts commands
through the serial interface and uses those commands
to control the four remaining blocks.
M
S erially Controlled, Triple 3x2 Audio/Video
Crosspoint S witc hes
12
______________________________________________________________________________________
COM2B
COM1B
COM2A
COM1A
C3
C2
C1
C0
COM1C
C4
COM2C
C5
BIT
Bias
C6
Clickless Mode
C7
REGISTER
Table 1. Command-Byte Format
Controls the switch connected to S_;
1 = close switch, 0 = open switch.
Controls the switch connected to NO3_;
1 = close switch, 0 = open switch.
Controls the switch connected to NO2_;
1 = close switch, 0 = open switch.
Controls the switch connected to NO1_;
1 = close switch, 0 = open switch.
Don’t care
Don’t care
DESCRIPTION
Don’t care
Don’t care
1
D3
0
D2
0
D1
0
D0
—
D4
—
D5
BIT
—
D6
—
D7
POWER-UP
DEFAULT
STATE
Table 2. COM Data-Byte Format
(C0, C1, C2, C3, C4, C5 = “1”)
SCL
SDA
ACK
ACK
SRT
A7
C0
A0
C7
D15
ACK
ACK
D0
D8
D7
STOP
Figure 4. 2-Wire Serial-Interface Timing Diagram (“WriteWord’’)
SCL
SDA
ACK
ACK
SRT
ACK
A7
D0
C0
A0
C7
D7
STOP
Figure 3. 2-Wire Serial-Interface Timing Diagram (“WriteByte’’)
相关PDF资料 |
PDF描述 |
|---|---|
| MAX4548EAX | Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches |
| MAX4549EAX | Serially Controlled, Triple 3x2 Audio/Video Crosspoint Switches |
| MAX4551 | Fixed-Point Digital Signal Processors 240-BGA MICROSTAR |
| MAX4553CEE | 【15kV ESD-Protected, Quad, Low-Voltage, SPST Analog Switches |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4548EAX | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4548EAX+ | 功能描述:视频开关 IC Triple 3x2 A/V Crosspoint Switch RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4548EAX+T | 功能描述:视频开关 IC Triple 3x2 A/V Crosspoint Switch RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4548EAX+W | 制造商:Maxim Integrated Products 功能描述:SERIALLY CONTROLLED TRIPLE 3X2 AUDIO/VIDEO CROSSPOINT SWITCH - Rail/Tube |
| MAX4548EAX-T | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
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