MAX4910 Maxim, MAX4910 Datasheet
MAX4910
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MAX4910 Summary of contents
Page 1
... A break-before-make feature further reduces popping. The MAX4910/MAX4912 control the switches in pairs with two control bits CB1 and CB2. The MAX4911 has one con- trol bit to switch all four switches and an enable pin EN to put the switches in a high-impedance mode ...
Page 2
... Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
Page 3
... Note 3: Guaranteed by design; not production tested. Note 4: ∆ ON(MAX) ON(MIN) Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 6: Off-isolation = 20log [ COM_ _______________________________________________________________________________________ with Negative Signal Handling ...
Page 4
Quad-SPDT, Clickless Audio Switches with Negative Signal Handling (V = 3.0V +25°C, unless otherwise noted CHANNEL 1/3 ON-RESISTANCE vs. COM 1/3 VOLTAGE 3 1.8V 2 2. ...
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Quad-SPDT, Clickless Audio Switches (V = 3.0V +25°C, unless otherwise noted TURN-ON/NC TURN-OFF TIME vs. SUPPLY VOLTAGE 100 TURN-ON TIME TURN-OFF TIME 10 1.8 2.3 ...
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Quad-SPDT, Clickless Audio Switches with Negative Signal Handling (V = 3.0V +25°C, unless otherwise noted LEAKAGE CURRENT vs. TEMPERATURE 10,000 1000 100 10 1 -40 -15 10 TEMPERATURE (°C) OFF-ISOLATION vs. FREQUENCY 0 -20 -40 CHANNEL ...
Page 7
... Table 1). The MAX4911 has an active-low enable EN and a digital control bit CB. Driving EN low takes the switches out of high impedance and CB con- trols all four switches (see Table 2). The MAX4910/ MAX4911 have shunt resistors on all their NO and NC terminals to suppress click-and-pop sounds that may occur from switching to a precharged terminal ...
Page 8
... NO2 NC4 COM4 NO4 GND CB1 = 0, CB2 = 0. DISCHARGE PATHS HAVE A 3.8kΩ RESISTOR (NOT SHOWN). Applications Information Digital Control Inputs The MAX4910/MAX4911/MAX4912 logic inputs accept up to +5.5V, regardless of supply voltage. For example, with a +3.3V supply, CB1, CB2, CB, and EN can be dri- 8 _______________________________________________________________________________________ MAX4911 V CC NO1 ...
Page 9
... These devices pass signals as low as V including signals below ground with minimal distortion. Click-and-Pop Suppression The MAX4910/MAX4911 have a 3.8kΩ (typ) shunt resis- tor on all their NO and NC terminals to automatically discharge any capacitance when they are not connect COM. The MAX4912 has shunt resistors on all NO, NC1, and NC3 terminals ...
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... INCLUDES FIXTURE AND STRAY CAPACITANCE. L Figure 2. Switching Time MAX4910 MAX4911 MAX4912 NC_ V N_ NO_ CB_ LOGIC GND INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE. L Figure 3. Break-Before-Make Interval MAX4910 MAX4911 MAX4912 R GEN NC_ OR NO_ V GEN GND Figure 4. Charge Injection 10 ______________________________________________________________________________________ Test Circuits/Timing Diagrams CC V LOGIC CC ...
Page 11
... ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. Figure 5. On-Loss, Off-Isolation, and Crosstalk V CC 10nF V CC MAX4910 COM_ MAX4911 MAX4912 CAPACITANCE METER NC_ or NO_ f = 1MHz GND Figure 6 ...
Page 12
... VOICE CODEC UART 12 ______________________________________________________________________________________ Typical Operating Circuit 1. NC1 COM1 NO1 SPEAKER 8Ω NC3 COM3 NO3 DISCHARGE CB1 (CB) CONTROL/ CB2 (EN) SIGNAL CONTROL NC2 COM2 NO2 HEADPHONES OR UART NC4 COM4 NO4 MAX4910 MAX4911 MAX4912 ( ) IS FOR MAX4911 ONLY. GND PROCESS: BiCMOS Chip Information ...
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... NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...