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FSA8028 Audio Jack Detection and Configuration Switch Description Features Detection Functionality Switch Type VDD VIO THD (MIC) ESD (Air Gap) Operating Temperature Accessory Plug-In 3- or 4-Pole Audio Jack Send/End Key Pressed Decreased Timing for Sensitive Send/End Keys MIC 2.5 to 4.4 V 1.6 to VDD 0.01% Typical 15 kV -40C to 85C The FSA8028 is an audio jack detector and switch for 3- or 4-pole accessories. In addition to detection, the FSA8028 features an integrated MIC switch that allows the processor to configure the audio jack. The architecture is designed to allow common third-party headphones to be used for listening to music from mobile handsets, personal media players, and portable peripheral devices. Determines 3- or 4-Pole Audio Jacks Removes Audio Jack Pop-n-Click Caused by MIC Bias Detects Audio Jack Accessories: - Standard Headphones - Headsets with MIC - Send / End Button Presses Integrates a MIC Switch for 4-Pole Configuration Applications 3.5 mm and 2.5 mm Audio Jacks Cellular Phones, Smart Phones MP3 and PMP Ordering Information Part Number Operating Temperature Range Top Mark FSA8028UMX -40 to +85C KZ (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 Package 10-Lead, 1.4 x 1.8 x 0.55 mm, 0.4 mm Pitch, Ultrathin Molded Leadless Package (UMLP) www.fairchildsemi.com FSA8028 -- Audio Jack Detection and Configuration Switch September 2014 FSA8028 -- Audio Jack Detection and Configuration Switch Typical Application 2.5 to 4.4 V 1.6 to VDD Baseband Processor VIO VDD VDD DET EN J POLE S/E GPIO1 GPIO2 GPIO3 GPIO4 LOW = plugged HIGH = unplugged Normally Open (NO) Switch 0.5 A J_DET L R GND MIC Oscillator and Logic 1 2 3 4 Audio RMIC MIC MIC Bias 16-32 W COMP CMIC HIGH=>J_MIC=0 V LOW=>J_MIC>0.620 V R SPKR GND 16-32 W MIC L SPKR J_MIC S - Figure 1. Mobile Phone Example Pin Configuration EN 3 JPOLE 4 VDD 5 DET VIO 2 1 6 7 S/E MIC 10 J_DET 9 GND 8 J_MIC Figure 2. 10-Lead UMLP Pin Assignment (Through View) (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 www.fairchildsemi.com 2 Name Pin # Type Description Function DET 2 Output Indicates if an accessory is plugged into the audio jack, as detected on the J_DET pin 0 Plugged 1 Unplugged JPOLE 4 Output Indicates if an accessory plugged into the audio jack is 3 pole or 4 pole 0 4-pole jack 1 3-pole jack S/E 6 Output Indicates state of SEND/END for a 4-pole accessory when a key has been pressed 0 No key press 1 Key press EN 3 Input Controls internal microphone switch between the J_MIC and MIC pins 0 MIC / J_MIC switch open 1 MIC / J_MIC switch closed Plugged 10 Input Input from a pin of the audio jack socket tied to a mechanical switch that typically closes whenever an audio jack is inserted into that socket 0 J_DET 1 Unplugged MIC 7 Switch Microphone switch path that goes to the microphone preamplifier J_MIC 8 Switch Microphone switch path that connects to the microphone and SEND/END key audio jack pole VDD 5 Power Core supply voltage VIO 1 Power Baseband I/O supply voltage GND 9 Ground Ground for both the audio jack and the PCB See EN pin Note: 1. 0 = VOL or VIL; 1 = VOH or VIH (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 www.fairchildsemi.com 3 FSA8028 -- Audio Jack Detection and Configuration Switch Pin Descriptions FSA8028 -- Audio Jack Detection and Configuration Switch Functional Diagram Power Up (POR GOOD) Is there an accessory plugged into the audio jack? NO YES 3-Pole Configuration 3-Pole *DET = 0 *JPOLE = 1 *S/E = 0 Is the accessory 3 or 4 pole? 4-Pole Is the accessory a 3 or 4 pole? *DET = 0 *JPOLE = 0 *S/E = 0 Configure MIC Switch *EN = Set by processor NO YES Is there an accessory plugged into the audio jack? 4-Pole Configuration Stuck Send/End (2) Key Check Is Send/END key pressed? NO YES NO Key Press *S/E = 1 No Key Press *S/E = 0 YES Detached Accessory Is there an accessory plugged into the audio jack? NO Set to Default States *DET = 1 *JPOLE = 1 *S/E =0 YES Figure 3. Functional Flow Diagram Note: 2. Stuck Send/End key function is only available if EN=HIGH. Table 1. FSA8028 Stuck Send/End Key (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 EN FSA8028 HIGH Stuck Send / End Key Active LOW Stuck Send / End Key Disabled www.fairchildsemi.com 4 State Description VDD VIO Active 1 1 0 0 1 0 0 1 OFF DET J_MIC EN 0 1 0 0 JPOLE S/E J-DET MIC Switch HIGH (unplugged) Open Active 1 (unplugged) Table 3. FSA8028 I/O States During Detection J_DET EN 3-State 1 (3 Pole) 0 (No Press) (3) S/E JPOLE DET 3 Pole 4 Pole 3 Pole 4 Pole 1 0 (no press) 0 (no press) 0 (4 Pole) 0 (4 Pole) 0 0 0 0 (no press) 1 (press) 1 (3 Pole) 0 (4 Pole) 0 1 0 0 (no press) 0 (no press) 1 (3 Pole) 0 (4 Pole) 0 0 0 1 0 (no press) 1 (press) 1 (3 Pole) 0 (4 Pole) 0 1 X X 0 (no press) 0 (no press) 1 (3 Pole) 1 (3 Pole) 1 Note: 3. State detected after initial plug-in. (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 www.fairchildsemi.com 5 FSA8028 -- Audio Jack Detection and Configuration Switch Table 2. States During Power Good and OFF Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Min. Max. Units Supply Voltage from Battery -0.5 6.0 V VSW Switch I/O Voltage for "S" Switch and All Input Voltages Except J_DET -0.5 VDD+0.5 V VJD Input Voltage for J_DET Input -1.5 VDD+0.5 IIK Input Clamp Diode Current -50 ISW Switch I/O Current (Continuous) VDD & VIO TSTG Parameter Storage Temperature Range -65 TJ Maximum Junction Temperature TL Lead Temperature (Soldering, 10 Seconds) IEC 61000-4-2 System ESD ESD JEDEC JESD22-A114, Human Body Model JEDEC JESD22-C101, Charged Device Model Air Gap 15.0 Contact 8.0 All Pins 7.5 J_DET, J_MIC, VDD, VIO 12.0 All Pins 2.0 V mA 50 mA +150 C +150 C +260 C kV Note: 4. The input and output negative ratings may be exceeded if the input and output diode current ratings are observed. Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Max. Units 2.5 4.4 V VDD Battery Supply Voltage VIO Parallel I/O Supply Voltage 1.6 VDD V TA Operating Temperature -40 +85 C (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 www.fairchildsemi.com 6 FSA8028 -- Audio Jack Detection and Configuration Switch Absolute Maximum Ratings All typical values are at TA=25C unless otherwise specified. Symbol Parameter VDD (V) Conditions TA = -40 to +85C Min. Typ. Max. 0.9 2.9 0.8 2.5 0.6 2.0 Units MIC Switch 2.5 RON MIC Switch On Resistance IOUT = 30 mA, VIN = 2.0 V 2.8 3.8 IOUT = 30 mA, VIN = 1.6, 2.0, 2.5 V 2.5 RFLAT(ON) On Resistance Flatness 2.8 0.70 IOUT = 30 mA, VIN = 1.6, 2.0, 2.8 V 3.8 1.50 0.25 VIN Switch Input Voltage Range 2.5 to 4.4 CON MIC and J_MIC Switch ON Capacitance 3.8 f = 1 MHz 76 pF COFF MIC and J_MIC Switch OFF Capacitance 3.8 f = 1 MHz 24 pF 0 VDD V J_DET J_DETAudioV Audio Voltage Range on J_DET Pin 2.5 to 4.4 DET = LOW -1 1 J_DETAudiof Audio Frequency on J_DET Pin 2.5 to 4.4 DET = LOW 20 20000 Hz J_DETRGND Detection Resistance to Ground 2.5 to 4.4 Audio Jack Inserted 0 500 K J_DETHYS Hysteresis of J_DET 230 V mV Parallel I/O VIH Input High Voltage 0.7 x VIO VIL Input Low Voltage VOH Output High Voltage IOH = -100 A VOL Output Low Voltage IOL = +100 A VIO V 0.3 x VIO V 0.8 x VIO V 0.2 x VIO V Comparator VCOMP Comparator Threshold for SEND/END Sensing 2.5-3.8 J_DET, EN = LOW 620 mV Current IOFF IIN Power Off Leakage Current Through Switch Input Leakage Current 0 MIC and J_MIC Ports VIN = 4.4 V 1.5 A 0 to 4.4 Inputs 0 = 4.4 V 1 A ICC-SLNA Battery Supply Sleep Mode Current No Accessory Attached Static Current 2.5 to 4.4 During Sleep Mode (EN = LOW) 1 3 A ICC-SLWA Battery Supply Sleep Mode Current with Accessory Attached Active Current 2.5 to 4.4 (EN = LOW and/or DET = HIGH) 15 25 A (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 www.fairchildsemi.com 7 FSA8028 -- Audio Jack Detection and Configuration Switch DC Electrical Characteristics All typical values are for VCC=3.3 V at TA=25C unless otherwise specified. Symbol Parameter VDD (V) Conditions TA = -40 to +85C Min. Typ. Max. Unit MIC Switch THD Total Harmonic Distortion 3.8 RT = 600 , VSW = 0.5 VPP, f = 20 Hz to 20 kHz, VIN = 2.0 V 0.01 % OIRR Off Isolation 3.8 f = 20 kHz, RS = 32 , CL = 0 pF, RT = 32 -90 dB Parallel I/O 2.5 CL = 5 pF, 20% to 80% 19 tR, tF Output Edge Rates (DET, S/E, JPOLE) tPOLL On Time of MIC Switch for Sensing SEND/END Button Press Oscillator Stable Time 2.5 to 4.4 1 ms tPER Period of MIC Switching Time for Sensing SEND/END Button Press 2.5 to 4.4 10 ms tDET-IN Debounce Time after J-DET Changes State from High to Low 2.5 to 4.4 422 ms tDET_REM Debounce Time after J_DET Changes State from Low to High 2.5 to 4.4 30 s tDET Detection Timeout for Sensing 3-Pole or 4-Pole Audio Jack Plugged In 2.5 to 4.4 4.5 ms tKBK Debounce Time for Sensing SEND/END Key Press / Release 2.5 to 4.4 27 ms -90 dB 3.8 ns 15 Power PSRR Power Supply Rejection Ratio Table 4. Package Nominal Values Power Supply Noise 300 mVPP, Measured 10/90%, f = 217 Hz 3.8 JEDEC Symbol Description Nominal Values (mm) A A1 A3 b L e D E Overall Height Package Standoff Lead Thickness Lead Width Lead Length Lead Pitch Body Length (Y) Body Width (X) 0.5 0.072 0.152 0.4 0.2 0.4 1.8 1.4 (c) 2012 Fairchild Semiconductor Corporation FSA8028 * Rev. 1.0.2 www.fairchildsemi.com 8 FSA8028 -- Audio Jack Detection and Configuration Switch AC Electrical Characteristics A 1.400.10 B PIN #1 IDENT 1.800.10 TOP VIEW 1.70 0.150.05 0.563 (9X) 0.66 0.500.05 1 SEATING PLANE 0.0250.025 SIDE VIEW C 0.40 (0.20) 4X 0.225 (10X) 3 0.400.05 (9X) RECOMMENDED LAND PATTERN 0.40 6 DETAIL A 1.45 1 PIN #1 IDENT 2.10 0.45 (9X) 0.55 (0.60) 4X 10 0.200.05 (10X) BOTTOM VIEW 0.40 1.85 0.10 C A B 0.05 C 0.225 (10X) 0.500.05 OPTIONAL MINIMAL TOE LAND PATTERN PACKAGE EDGE 0.200.05 45 DETAIL A SCALE : 2X LEAD OPTION 1 SCALE : 2X LEAD OPTION 2 SCALE : 2X NOTES: A. PACKAGE DOES NOT CONFORM TO ANY JEDEC STANDARD. B. DIMENSIONS ARE IN MILLIMETERS. C. LAND PATTERN RECOMMENDATION IS EXISTING INDUSTRY LAND PATTERN. D. DRAWING FILENAME: MKT-UMLP10ArevG. ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor's product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards, regardless of any support or applications information provided by ON Semiconductor. "Typical" parameters which may be provided in ON Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. 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