FSA8039UMSX_F106

FSA8039 Audio Jack Detection and Configuration Switch with Moisture Sensing Features Description Detection Switch Type VDD VIO THD (MIC) ESD (Air Gap) Operating Temperature Package Top Mark Accessory Plug-In 3-Pole or 4-Pole Audio Jack Send / End Key Pressed Moisture MIC 2.5 V to 4.5 V 1.6 to VDD 0.01% Typical 15 kV -40°C to 85°C 10-Lead UMLP, 1.4 mm × 1.8 mm × 0.5 mm, 0.4 mm Pitch NF Ordering Information FSA8039UMSX_F106  Prevents False Detection of Accessories in the Audio Jack when Moisture is Present  Removes Audio Jack Pop & Click Caused by MIC Bias  Detects Audio Jack Accessories: - Standard Headphones - Send / End Button Presses  Integrates a MIC Switch for 4-Pole Configuration Applications    The FSA8039 is an audio jack detection switch for 3-pole and 4-pole accessories. The FSA8039 features moisture sensing, which prevents false positive detection of accessories in the audio jack. The FSA8039 also features an integrated MIC switch that allows a processor to configure attached accessories. 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. 3.5 mm and 2.5 mm Audio Jacks Related Resources Cellular Phones, Smart Phones  FSA8039 Evaluation Board MP3 and PMP  For samples and questions, please contact: Analog.Switch@fairchildsemi.com GPIO Interface FSA8039 Baseband Logic Insert and Moisture Detection Jack Detect Audio Jack Key Detection CODEC MIC MIC - Send/End Key Figure 1. System Diagram © 2013 Fairchild Semiconductor Corporation FSA8039 • Rev. 1.0.0 www.fairchildsemi.com FSA8039 — Audio Jack Detection and Configuration Switch with Moisture Sensing October 2013 MIC Bias 2.2 kΩ To MIC Pre-Amp Battery 1 kΩ Processor IO Supply MIC VDD VIO 2.2 µF 1 µF J_DET J_MIC GND TVS Diode MIC L_DET GND 4-Pole Audio Jack R Figure 2. L Typical Application Pin Configuration VIO DET 2 1 EN 3 10 J_DET NC 4 9 GND VDD 5 8 J_MIC 6 7 MIC S/E Figure 3. Pin Assignment (Through View) Pin Definitions Name Pin # Type VIO 1 Power Baseband I/O supply voltage DET 2 Output EN 3 Input Internal microphone switch control input NC 4 N/C No connect; connect to ground for improved solder stability VDD 5 Power Core supply voltage S/E 6 Output MIC 7 Switch System-side microphone switch pin J_MIC 8 Switch Accessory-side microphone switch pin GND 9 Ground Ground for both the audio jack and PCB J_DET 10 Input Description De-bounced output of J_DET; Indicates if audio accessory is plugged in. De-bounced output for a connected 4-pole accessory; Indicates when an accessory key has been pressed Input from the audio jack mechanical plug insert/removal detection pin. DET=L, Plugged DET=H, Unplugged EN=L, Switch is Open EN=H, Switch is Closed S/E=L, No Key Press S/E=H, Key Press EN=L, Switch Open EN=H, Switch Closed J_DET=H, Unplugged J_DET=L, Plugged Note: 1. L=LOW, H=HIGH. © 2013 Fairchild Semiconductor Corporation FSA8039 • Rev. 1.0.0 www.fairchildsemi.com 2 FSA8039 — Audio Jack Detection and Configuration Switch with Moisture Sensing Typical Application Diagram 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 Parameter VDD, VIO DC Supply Voltages Min. Max. Unit -0.5 6.0 V V VSW MIC Switch I/O Voltage and All Input Voltages Except J_DET -0.5 VDD+0.5 VJD Input Voltage for J_DET Input -1.5 VDD+0.5 IIK Input Clamp Diode Current -50 ISW Switch I/O Current (Continuous) TSTG (2) Storage Temperature Range -65 V mA 50 mA +150 C TJ Maximum Junction Temperature +150 C TL Lead Temperature (Soldering, 10 Seconds) +260 C IEC 61000-4-2 System ESD ESD Human Body Model, JEDEC JESD22-A114, Charged Device Model, JEDEC JESD22-C101 Air Gap 15.0 Contact 8.0 J_DET, J_MIC, VDD, VIO, GND 13.0 All Other Pins 8.0 All Pins 2.0 kV Note: 2. 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. Unit VDD Battery Supply Voltage 2.5 4.5 V VIO Parallel I/O Supply Voltage 1.6 VDD V TA Operating Temperature -40 +85 ºC © 2013 Fairchild Semiconductor Corporation FSA8039 • Rev. 1.0.0 www.fairchildsemi.com 3 FSA8039 — Audio Jack Detection and Configuration Switch with Moisture Sensing Absolute Maximum Ratings All typical values are at TA=25°C unless otherwise specified. Symbol Parameter VDD (V) Condition TA=-40 to +85°C Min. Typ. Max. 0.85 0.70 0.50 0.40 0.45 0.40 0.35 0.30 VDD 2.00 2.00 2.00 2.00 1.50 1.50 1.50 1.50 Unit MIC Switch VIN RON RFLAT(ON) Switch Input Voltage Range MIC Switch On Resistance On Resistance Flatness 2.5 to 4.5 2.8 3.0 3.3 3.8 2.8 3.0 3.3 3.8 0 IOUT=30 mA, VIN=2.2 V IOUT=30 mA, VIN=1.6 to 2.8 V V Ω J_DET J_DETAudioV Audio Voltage on J_DET Pin 2.5 to 4.5 DET=LOW -1 1 V J_DETAudiof Audio Frequency on J_DET Pin 2.5 to 4.5 DET=LOW 20 20000 Hz J_DETRGND Detection Resistance to Ground 2.5 to 4.5 0 500 kΩ Audio Accessory Inserted J_DETHYS Hysteresis of J_DET 200 mV J_DETVIH J_DET Input High Voltage 0.7 × VDD VDD V J_DETVIL J_DET Input Low Voltage -1 0.4 × VDD V Parallel I/O VIH EN Input High Voltage VIL EN Input Low Voltage 0.7 × VIO VOH DET, S/E Output High Voltage IOH=-100 µA VOL DET, S/E Output Low Voltage IOL=+100 µA VIO 0.3 × VIO 0.8 × VIO V 0.2 × VIO Comparator VCOMP_S/E Comparator Threshold for SEND/END Sensing 2.8 to 4.5 J_DET, EN=LOW 780 mV Current IOFF IIN Power-Off Leakage Current Through Switch 0 MIC=4.3 V 1 µA Input Leakage Current 0 EN=4.3 V 1 µA 1.5 3.0 µA 20 27 µA ICC-SLNA VDD Supply Sleep Mode Current (No Accessory Attached) 2.5 to 4.5 EN=LOW ICC-SLWA VDD Supply Active Mode Current (Accessory Attached) 2.5 to 4.5 © 2013 Fairchild Semiconductor Corporation FSA8039 • Rev. 1.0.0 DET=LOW, EN=HIGH www.fairchildsemi.com 4 FSA8039 — Audio Jack Detection and Configuration Switch with Moisture Sensing DC Electrical Characteristics All typical values are for VCC=3.3 V at TA=25°C unless otherwise specified. Symbol Parameter VDD (V) Conditions Typical Unit MIC Switch Total Harmonic Distortion + Noise 3.8 RT=600 Ω, f=20 Hz to 20 kHz, VMIC=2.2 VDC + 0.5VPP Sine 0.01 % OIRR Off Isolation 3.8 f=20 Hz to 20 kHz, RS=RT=32 Ω, CL=0 pF -85 dB CON MIC and J_MIC Switch ON Capacitance 3.8 f=1 MHz 60 pF COFF MIC and J_MIC Switch OFF Capacitance 3.8 f=1 MHz 35 pF 3.8 THD+N Parallel I/O tR, tF Output Edge Rates (DET, S/E) CL=5 pF, 20% to 80%, 20 ns tPOLL On Time of MIC Switch for Sensing SEND/END Button Press 2.5 to 4.5 DET= LOW, EN= LOW 1 ms tWAIT Period of MIC Switching Time for Sensing SEND/END Button Press 2.5 to 4.5 DET= LOW, EN= LOW 10 ms tDET_IN Debounce Time after J_DET Changes State from HIGH to LOW 2.5 to 4.5 70 ms tDET_REM Debounce Time after J_DET Changes State from LOW to HIGH 2.5 to 4.5 30 μs SEND/END Button Press/Release Debounce Time 2.5 to 4.5 30 ms -90 dB tKBK Power PSRR Power Supply Rejection Ratio © 2013 Fairchild Semiconductor Corporation FSA8039 • Rev. 1.0.0 3.8 Power Supply Noise 300 mVPP, f=217 Hz www.fairchildsemi.com 5 FSA8039 — Audio Jack Detection and Configuration Switch with Moisture Sensing AC Electrical Characteristics Design/Layout Best Practices Ground Layout Guidelines System-level Electrostatic Discharge (ESD) events often occur in the audio path of a mobile device, typically when inserting or removing an accessory from the audio jack. The audio path from the audio jack to the audio codec or microphone pre-amplifier is typically designed for relatively low frequencies (