MAX4855 19-3377 Rev 0 7/04 0.75 , Dual SPDT Audio Switch with Integrated Comparators General Description Features The MAX4855 dual, single-pole/double-throw (SPDT) Audio Signal Routing switch operates from a single +2V to +5.5V supply and 0.75 On-Resistance features rail-to-rail signal handling. The MAX4855 has low on-resistance (0.75 ) with a +3V supply making it 0.18 On-Resistance Flatness ideal for audio switching applications in portable 0.07 Channel-to-Channel Matching devices. The device also integrates two internal com- parators that can be used for headphone detection or Rail-to-Rail Signal Handling mute/send key functions. 2 Integrated Comparators The MAX4855 is available in the space-saving (3mm x 3mm), 16-pin thin QFN package and operates over the 1.8V Logic Compatible extended temperature range of -40C to +85C. 2V to 5.5V Supply Range Available in a Space-Saving (3mm x 3mm), Applications 16-Pin TQFN Package Speaker Headset Switching Audio-Signal Routing Ordering Information Cellular Phones PIN- TOP Notebook Computers PART TEMP RANGE PACKAGE MARK PDAs and Other Handheld Devices MAX4855ETE -40C to +85C 16 TQFN-EP* ABY *EP = Exposed paddle. Block Diagram/Truth Table Pin Configuration MAX4855 MAX4855 IN NO NC TOP VIEW NC1 0 OFF ON COM1 16 15 14 13 0.75 1 ON OFF NO1 IN1 SWITCHES SHOWN FOR N.C. NO2 1 12 LOGIC 0 INPUT IN2 NC2 CIN1 COUT1 2 11 MAX4855 COM2 0.75 CIN2 3 10 COM2 NO2 V CC 3 COM1 IN2 4 9 COUT1 56 7 8 CIN1 V CC 3 THIN QFN COUT2 CONNECT EXPOSED PADDLE TO GROUND. CIN2 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. NO1 NC1 GND IN1 NC2 V CC N.C. COUT20.75 , Dual SPDT Audio Switch with Integrated Comparators ABSOLUTE MAXIMUM RATINGS V , IN , CIN to GND ..............................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) CC A NO , NC , COM , COUT (Note 1) ...............-0.3V to (V + 0.3V) 16-Pin Thin QFN (derate 20.8mW/C above +70C) .....1667mW CC COUT Continuous Current...................................................20mA Operating Temperature Range................................-40C to +85C Closed Switch Continuous Current COM , NO , NC .......300mA Junction Temperature...........................................................+150C Peak Current COM , NO , NC Storage Temperature Range .................................-65C to +150C (pulsed at 1ms, 50% duty cycle) ....................................400mA Lead Temperature (soldering, 10s)......................................+300C Peak Current COM , NO , NC (pulsed at 1ms, 10% duty cycle) ....................................500mA Note 1: Signals on NO, NC, or COM exceeding V or GND are clamped by internal diodes. Signals on IN exceeding GND are CC clamped by an internal diode. Limit forward-diode current to maximum current rating. 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, unless otherwise noted. Typical values are at V = +3.0V, T = +25C, unless other- CC A CC A wise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V 2 5.5 V CC Supply Current I V = 5.5V, V = 0V or V 510 A CC CC IN CC ANALOG SWITCH V , NO Analog Signal Range V , 0 V V NC CC V COM V = 2.7V, I = CC COM T = +25C 0.75 1 A On-Resistance (Note 3) R 100mA, V or V = 0V ON NC NO T = -40C to +85C 1.1 to V A CC On-Resistance Match T = +25C 0.075 0.120 A V = 2.7V, I = 100mA, CC COM Between Channels R ON V or V = 1.5V NC NO T = -40C to +85C 0.135 (Notes 3, 4) A V = 2.7V, I = T = +25C 0.18 0.275 CC COM A On-Resistance Flatness R 100mA, V or V = NC NO FLAT (Note 5) T = -40C to +85C 0.3 0.75V, 1.5V, 1.75V A V = 5.5V, V or V = T = +25C -2 +2 CC NC NO A NO /NC Off-Leakage I 1V or 4.5V, V = 4.5V or nA OFF COM Current (Note 2) 1V T = -40C to +85C -10 +10 A V = 5.5V V or V = CC NC NO T = +25C -2 +2 A COM On-Leakage I 1V, 4.5V, or floating V nA ON COM Current (Note 2) T = -40C to +85C -15 +15 = 1V, 4.5V, or floating A DYNAMIC CHARACTERISTICS V = 2.7V, V or V = T = +25C 40 60 CC NO NC A Turn-On Time t 1.5V, R = 300 , C = 50pF ns L L ON T = -40C to +85C 100 (Figure 1) A 2 MAX4855