MAX4910/MAX4911/MAX4912 19-3854 Rev 0 2/06 Quad-SPDT, Clickless Audio Switches with Negative Signal Handling General Description Features The MAX4910/MAX4911/MAX4912 quad, single- Distortion-Free Negative Signal Throughput Down pole/double-throw (SPDT), clickless audio switches fea- to V - 5.5V CC ture negative signal capability that allows signals as low Internal Shunt Resistors Reduce Click-and-Pop as V -5.5V to pass through without distortion. These CC Sounds analog switches have a low on-resistance, low supply High PSRR Reduces Supply Noise current, and operate from a single +1.8V to +5.5V supply. The MAX4910/MAX4911/MAX4912 have internal shunt Low On-Resistance (0.37 ) resistors that automatically discharge the capacitance at 0.1 Channel-to-Channel Matching the normally open (NO) and normally closed (NC) termi- 0.35 On-Resistance Flatness nals when they are not connected. The MAX4910/ MAX4911 have shunt resistors on all NO and NC terminals +1.8V to +5.5V Single-Supply Voltage and the MAX4912 has shunt resistors on all NO, NC1, and -80dB Crosstalk (20kHz) NC3 terminals. These shunt resistors reduce click-and- -90dB Off-Isolation (20kHz) pop sounds that occur when switching audio signals between precharged points. A break-before-make feature 0.05% Total Harmonic Distortion further reduces popping. Enable Control (MAX4911) The MAX4910/MAX4912 control the switches in pairs with 10nA Leakage Current two control bits CB1 and CB2. The MAX4911 has one con- trol bit to switch all four switches and an enable pin EN to 150nA Supply Current put the switches in a high-impedance mode. The MAX4912 Ordering Information has two terminals without shunt resistors for switching applications that do not require pre-discharge switching. PIN- T O P PKG PART T EMP R AN G E The MAX4910/MAX4911/MAX4912 are available in a tiny PACK A G E M A RK C O DE 16-pin TQFN-EP (3mm x 3mm) package and operate M A X49 1 0E TE+ - 40C to +85 C 16 TQFN-E P ** ADY T1633-4 over the -40C to +85C extended temperature range. M A X49 1 1E TE+* - 40C to +85 C 16 TQFN-E P ** ADZ T1633-4 Applications M A X49 1 2E TE+* - 40C to +85 C 16 TQFN-E P ** AEA T1633-4 Cell Phones + Denotes lead-free package. *Future productcontact factory for availability. PDAs and Handheld Devices **EP = Exposed pad. Notebook Computers Typical Operating Circuit appears at end of data sheet. MP3 Players Pin Configurations TOP VIEW COM4 NO4 CB2 NC3 COM4 NO4 EN NC3 12 11 10 9 12 11 10 9 13 COM3 13 COM3 NC4 8 NC4 8 NO3 NO3 V 14 7 V 14 7 CC CC MAX4910 MAX4911 6 GND 6 GND NO1 15 NO1 15 MAX4912 NC2 NC2 COM1 16 5 COM1 16 5 + + 132 4 132 4 NC1 CB1 NO2 COM2 NC1 CB NO2 COM2 THIN QFN THIN QFN 3 mm x 3 mm 3 mm x 3 mm Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Quad-SPDT, Clickless Audio Switches with Negative Signal Handling ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) Continuous Power Dissipation (T = +70C) A V , CB , EN ........................................................-0.3V to +6.0V 16-Pin TQFN, Single-Layer Board CC COM , NC , NO ...............................(V - 6V) to (V + 0.3V) (derate 15.6mW/C above +70C).............................1250mW CC CC Continuous Current NO , NC , COM ...........................300mA 16-Pin TQFN, Multilayer Board Peak Current NO , NC , COM (pulsed at 1ms, (derate 20.8mW/C above +70C).............................1667mW 50% duty cycle)..........................................................400mA Operating Temperature Range ...........................-40C to +85C Peak Current NO , NC , COM (pulsed at 1ms, Junction Temperature......................................................+150C 10% duty cycle)..........................................................500mA Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C 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. ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, T = -40C to +85C, EN = low (MAX4911 only), unless otherwise noted. Typical values are at V = +3.0V, T = CC A CC A +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY Supply Voltage V 1.8 5.5 V CC V = +5.5V, V = V = 0V or V 0.15 2 CC CB EN CC Supply Current I V = +2.7V, V = V = +0.5V or +1.4V 4 A CC CC CB EN V = +5.5V, V = V = +0.5V or +1.4V 8 CC CB EN ANALOG SWITCH V , NC V - CC Analog Signal Range V , (Note 2) V V NO CC 5.5V V , COM C hannels 1 and 3, V = C C T = +25C 0.37 0.75 A + 3.3V, V or V = V - N C N O C C 5.5V, - 1V , 0V, + 1V , + 2V , V , C C T = T to T 0.8 A MIN MAX I = I = 100mA C OM 1 C OM 3 On-Resistance R ON (Note 3) C hannels 2 and 4, V = C C T = +25C 0.72 1.45 A + 3.3V, V or V = V - N C N O C C 5.5V, - 1V , 0V, + 1V , + 2V , V , C C T = T to T 1.6 A MIN MAX I = I = 100mA C OM 2 C OM 4 Channels 1 and 3, V = +3.3V, V or V = 0, CC NC NO 0.1 On-Resistance Match I = 100mA COM Between Channels R ON Channels 2 and 4, V = +3.3V, V or V = 0, CC NC NO (Notes 3, 4) 0.1 I = 100mA COM C hannel s 1 and 3, V = +3.3V , V = V = C C N C N O 0.35 V - 5.5V , - 1V , 0V, + 1V, + 2V, V , I = 100m A C C C C C OM On-Resistance Flatness R FLAT (Note 5) C hannel s 2 and 4, V = +3.3V , V = V = C C N C N O 0.6 V - 5.5V , - 1V , 0V, + 1V, + 2V, V , I = 100m A C C C C C OM Shunt Switch Resistance R 2 3.8 6 k SH 2 MAX4910/MAX4911/MAX4912