FSA850

FSA850 ONSEMI | Alldatasheet

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© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA850 • Rev. 1.12 FSA850 — Audio 3-Pole / 4-Pole MIC-GND Switch FSA850 Audio 3-Pole / 4-Pole MIC-GND Switch

Features

Switch Type 3-Pole/4-Pole MIC - GND VCC 2.3 to 4.5 V THD (MIC) 0.001% Typical ESD IEC 61000-4-2 (Air Gap) IEC 61000-4-2 (Contact) HBM (All Pins) GNDnA/GNDnB to GND Power to GND CDM 15 kV 8 kV 3 kV 8 kV 10 kV 2 kV Operating Temperature -40°C to 85°C RON Maximum (GND1n) 0.08 Ω RON Maximum (SENSE) 1 Ω

Applications

 3.5 mm and 2.5 mm Audio Jacks  Cellular Phones, Smart Phones  MP3 and PMP (Portable Media Player)

Description

The FSA850 is a 3-pole or 4-p ole audio jack microphone GND switch for accessories with General-Purpose Input / Output (GPIO) control signals. The FSA850 also has the ability to perform 4-pole cross-point switching to support Open Mobile Terminal Platform (OMTP) 4-pole headset plugs. The architecture is designed to replace discrete MOSFET solutions and allow common third-party headphones to be used for listening to music or playi ng video from mobile handsets, personal media players, and portable peripheral devices.  Supports 4-Pole OMTP Cross Point Switching for GND Connection  Integrates a MIC switch for 3- or 4-Pole Configuration Headset Plugs  Reduces “Pop and Click” Caused by Microphone Bias

Ordering Information

Top Mark Package Packing Method FSA850UCX -40 to +85°C M5 12-Ball, Wafer-Level Chip-Scale Package (WLCSP), 3x4 Array, 0.4mm Pitch, 250 µm Ball 3000 units on Tape & Reel

Figure 3. Pin Assignments (Top Through View, Top Mark Side)

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA850 • Rev. 1.12 4 FSA850 — Audio 3-Pole / 4-Pole MIC-GND Switch Absolute Maximum Ratings Stresses exceeding the Absolute Maximum Ratings may dama ge the device. The device may not function or be operab le above the recommended operating conditions and stressing th e parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operat ing conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Min. Max. Unit VCC Supply Voltage from Battery -0.5 +5.5 V VCNTRL Control Input Voltage (S0, S1) -0.5 VCC V VSWM, VSWG Switch I/O Voltage (SENSE, MIC, MIC/GND1A, MIC/GND2A, MIC/GND1B, MIC/GND2B) -0.5 VCC+0.5 V IIK Input Clamp Diode Current(1) -50 mA ISW Switch I/O Current (Continuous)(1) (SENSE, MIC, MIC/GND2A, MIC/GND2B) 50 mA ID GND Switch I/O Current (Continuous)(1) (MIC/GND1A, MIC/GND1B) 300 mA TSTG Storage Temperature Range -65 +150 C TJ Maximum Junction Temperature +150 C TL Lead Temperature (Soldering, 10 Seconds) +260 C ESD IEC 61000-4-2 System ESD Air Gap 15 kV Contact 8 Human Body Model, JEDEC JESD22-A114 All Other Pins (S0,S1, SENSE, MIC) 3 I/O to GND (MIC/GND1A, MIC/GND2A, MIC/GND1B, MIC/GND2B) Power to GND 10 Charged Device Model, JEDEC JESD22-C101 All Pins 2 Note: 1. The input and output negative ratings may be excee ded if the input and output diode current ratings are observed. Recommended Operating Conditions The Recommended Operating Conditions table defines the condi tions 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 VCC Battery Supply Voltage 2.3 4.5 V VCNTRL Control Input Voltage (S0, S1) 0 VCC V VSWM Switch I/O Voltage (MIC) 0 VCC V VSWG Switch I/O Voltage (SENSE, MIC/GND1A, MIC/GND2A, MIC/GND1B, MIC/GND2B) 0 1.0 V TA Operating Temperature -40 +85 ºC

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA850 • Rev. 1.12 5 FSA850 — Audio 3-Pole / 4-Pole MIC-GND Switch All typical values are at TA = 25°C and VCC = 3.3V unless otherwise specified. Symbol Parameter Condition VCC (V) TA=- 40ºC to +85ºC Unit Min. Typ. Max. VIK Clamp Diode Voltage IIN=-18 mA 2.8 -1.2 V VIH Input Voltage High VCNTRL=0 to VCC 2.3 to 4.5 1.0 V VIL Input Voltage Low VCNTRL=0 to VCC 2.3 to 4.5 0.5 V IIN Control Input Leakage (S0,S1) VCNTRL=0 to VCC 4.5 -1 1 µA IOZ Off Leakage Current of Ports – Sense, MIC, MIC/GNDnA, and MIC/GNDnB S[0:1]=01; SENSE=MIC=0.3 V; VCC-0.3 V; MIC/GNDnA or MIC/GNDnB=1V0.3V or Floating 2.3 to 4.5 -1.00 0.05 1.00 µA IAON On Leakage Current of Ports – Sense, MIC, MIC/GNDnA, and MIC/GNDnB S[0:1]=00, 10, 11; SENSE=MIC=0.3V; VCC-0.3V; MIC/GNDnA or MIC/GNDnB=1V0.3V or Floating 2.3 to 4.5 -1.00 0.05 1.00 µA ICC Quiescent Supply Current VSWG=0 or 1V; VSWM=0 or VCC; IOUT=0 4.5 15 20 µA ICCZ Quiescent Supply Current – Hi-Z S[0:1]=01; VSWG=0 or 1 V; VSWM=0 or VCC, IOUT=0 4.5 0.2 1.0 µA ICCT Increase in ICC Current Per Control Voltage and VCC S0, S1=1.65 V 4.5 3 µA RON_SEN Switch On Resistance for SENSE Switch Paths ION=-24 mA, S[0:1]=00 or 11 MIC/GND2A or MIC/GND2B=1.0 V 2.3 0.6 1.0 Ω RONFLAT_SEN On Resistance Flatness for SENSE Switch Paths ION=-24 mA, S[0:1]=00 or 11 MIC/GND2A or MIC/GND2B=0 to 1.0 V 2.3 0.05 0.20 Ω RON_MIC Switch On Resistance for MIC Switch Paths ION=-24 mA, S[0:1]=00 or 11 MIC/GND2A or MIC/GND2B=1.0V 2.3 0.6 1.0 Ω RONFLAT_MIC On Resistance Flatness for MIC Switch Path ION=-24 mA, S[0:1]=00 or 11 MIC/GND2A or MIC/GND2B=0.5 to VCC 2.3 .08 0.5 Ω VMIC MIC Input Signal Range 2.3 to 4.5 0 VCC V RDSON(GND) GND Switch On Resistance ION=-200 mA, S[0:1]=00 or 11 MIC/GND1A or MIC/GND1B 2.3 40 80 mΩ VSENSE SENSE Input Signal Range 2.3 to 4.5 0 1 V

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA850 • Rev. 1.12 6 FSA850 — Audio 3-Pole / 4-Pole MIC-GND Switch All typical values are at TA = 25°C and VCC = 3.3V unless otherwise specified. Symbol Parameter Condition VCC (V) TA=- 40ºC to +85ºC Unit Min. Typ. Max. tON_MIC Turn-On Time (MIC, SENSE) S0, S1 to Output RL=10 kΩ, CL=10 pF 2.3 to 4.5 1 µs tOFF_MIC Turn-Off Time (MIC, SENSE) S0,S1 to Output RL=10 kΩ, CL=10 pF 2.3 to 4.5 1 µs tENABLE Enable Time (MIC, SENSE) S0,S1 to Output S[0:1]=01 to 00,10,11, RL=10 kΩ, CL=10 pF 2.3 to 4.5 1 µs tDISABLE Turn-Off Time (MIC, SENSE) S0,S1 to Output S[0:1]=00,10,11 to 01, RL=10 kΩ, CL=10 pF 2.3 to 4.5 1 µs MIC and SENSE Switch Symbol Parameter Condition VCC (V) TA = -40 to +85°C Unit Min. Typ. Max. THD Total Harmonic Distortion - MIC RT=600 Ω, VSW=0.5 VPP, f=20 Hz to 20 kHz, VIN=1.8 V 2.8 0.001 % OIRRM Off Isolation – MIC/SENSE f=20 kHz, RS=600 Ω, CL=0 pF, RT=600 Ω VSW=0.2 VPP 2.8 - 88 dB XTALKM Crosstalk from MIC to SENSE f=1 MHz, RL=100 Ω 2.8 -80 dB X-TalkSystem X-Talk Between Left and Right Speakers f=2kHz, RL=32 Ω, CL=0 pF, VIN=100 mVRMS 2.8 -54 dB Capacitance Symbol Parameter Condition TA=- 40ºC to +85ºC Unit Min. Typ. Max. CIN Control Pin Input Capacitance (S0, S1) VCC=0 V, f=1 MHz 1.7 pF CONM On Capacitance SENSE VCC=2.8 V, EN=VCC, f=1 MHz, MIC 75 COFFM Off Capacitance SENSE VCC=2.8 V, EN=0 V, f=1 MHz, MIC 30 Power Symbol Parameter Conditions VCC (V) TA = -40 to +85°C Unit Min. Typ. Max. PSRR Power Supply Rejection Ratio Power Supply Noise at 300 mVPP, Measured 10/90%, f=217 Hz 2.8 -80 dB IL Insertion Loss through Switch (VOUT/VIN) SENSE/MIC: VIN=400 mVpk-pk, f=20 kHz, DC Bias=0.3 V, RL=600 Ω 2.8 -0.4 dB SENSE/MIC: VIN=400 mVpk-pk, f=20 kHz, DC Bias=2.5 V, RL=600 Ω 2.8 -0.4

© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA850 • Rev. 1.12 7 FSA850 — Audio 3-Pole / 4-Pole MIC-GND Switch The following information applies to the WL-CSP package dimensions on the next page: Product Specific Dimensions D E X Y 1.56 mm 1.16 mm 0.18 mm 0.18 mm

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