Electronic Components Datasheet Search |
|
MAX4904ETA-T Datasheet(PDF) 8 Page - Maxim Integrated Products |
|
MAX4904ETA-T Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 13 page Low-RON, Dual-SPST/Single-SPDT Clickless Switches with Negative Rail Capability 8 _______________________________________________________________________________________ Detailed Description The MAX4901–MAX4905 are low on-resistance, low-volt- age, dual-SPST and single-SPDT analog switches that operate from a +1.8V to +5.5V supply and are fully speci- fied for nominal 3.0V applications. The devices feature a negative signal capability that allows signals below ground to pass through without distortion and have break-before-make switching (MAX4903/ MAX4904/MAX4905). The MAX4905 features a comparator that can be used for headphone or mute detection. The comparator threshold is internally generated to be approximately 1/3 of VCC. The MAX4902/MAX4904/MAX4905 feature an internal shunt resistor to discharge any capacitance at NO_ and NC connection points. This reduces the click-and-pop sounds that occur when switching audio signals. Applications Information Digital Control Inputs The MAX4901–MAX4905 logic inputs accept up to +5.5V, regardless of supply voltage. For example, with a +3.3V supply, IN_ can be driven low to GND and high to +5.5V, allowing for mixing of logic levels in a system. Driving IN_ rail-to-rail minimizes power consumption. For a +1.8V supply voltage, the logic thresholds are 0.5V (low) and 1.4V (high). For a +5V supply voltage, the logic thresholds are 0.8V (low) and 2.0V (high). Analog Signal Levels The on-resistance of the MAX4901–MAX4905 changes very little for analog input signals across the entire sup- ply-voltage range (see the Typical Operating Characteristics). The switches are bidirectional. The MAX4901–MAX4905 pass signals as low as VCC - 5.5V, including signals below ground with minimal dis- tortion. Note that there are shunt resistors on NO_ and NC when they are unconnected to COM_ for the MAX4902/MAX4904/MAX4905. Comparator (MAX4905) The MAX4905 includes a comparator that can be used for mute and headphone detection functions. The posi- tive terminal of the comparator is internally set to VCC / 3. When the negative terminal (CMP-) is below the thresh- old, the comparator output (CMPO) is a logic high. The comparator threshold of VCC / 3 allows for detection of headphones because headphone audio signals are typically biased to VCC / 2. Shunt Resistor (MAX4902/MAX4904/MAX4905) The 50 Ω shunt resistors on the MAX4902/MAX4904/ MAX4905 automatically discharge any capacitance at the NC or NO_ terminals when they are unconnected to COM_. This reduces audio click-and-pop sounds that occur when switching between audio sources. MAX4905 COM VCC IN CMP- GND MUTE BUTTON SPEAKER AUDIO SOURCE 1 NC NO CMPO 3 VCC VCC AUDIO SOURCE 2 DirectDrive SOURCE Typical Operating Circuit |
Similar Part No. - MAX4904ETA-T |
|
Similar Description - MAX4904ETA-T |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |