DATASHEET SEARCH SITE | WWW.ALLDATASHEET.COM

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 12

Technical content

Features

 3:1 Switch Handles: - Audio Headsets - UART - Up to Two High- and Low-Speed USB Data  Negative-Swing-Capable Audio Channel  Built-in Termination Resistors for Audio Pop Reduction  Simple Switch Control Using Two Select Pins

Applications

 Cell Phones, MP3 Players, PDAs

Description

The FSA806 is a 3:1 USB accessory switch that enables USB data, stereo and mono audio, and UART data to share a common connector port. Two ports are designed for high-speed USB 2.0 signaling, while also capable of full speed USB and UART communication. The architecture is designed to allow audio signals to swing below ground so a common USB and headphone jack can be used for personal media players and portable peripheral devices. The FSA806 meets both USB Rev. 2.0 and micro-USB specifications.

Ordering Information

Part Number Operating Temperature Range Top Mark Package FSA806UMX -40 to +85°C KN 12-Lead Quad, 1.8 x 1.8mm Ultrathin Molded Leadless Package (UMLP) Figure 1. Functional Block Diagram

Figure 2. Typical Application phone purchases by allowing re-use of the accessories. of three ports at the baseband’s discretion.

Table 1. Selection Truth Table

  1. The SELECT pins are CMOS inputs and should not be left in a floating condition. Some applications require a

resistors to GND defaults the device to all paths open (low-power mode).

  1. When the audio switch is in the OPEN position, the R and L are terminated to GND with internal termination

resistors to discharge any stray capacitance that could cause audio pop.

Figure 3. 12-Pin, UMLP Pin Assignments (Top-Through View) R_HOST 7 Right audio channel from phone audio codec. L_HOST 8 Left audio channel from phone audio codec. VCC 2 Input voltage supply pin to be connected to the phone battery output. can share DP_HOST1, DP_HOST2 or R_HOST signals. can share DM_HOST1, DM_HOST2 or L_HOST signals. SEL[1:0] 12, 1 Switch selection pins; refer to Table 1 for truth table.

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA806 • Rev. 1.0.1 5 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The devic e may not function or be operable above the recommended operating c onditions 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 Min. Max. Unit VCC Supply Voltage from Battery / Baseband -0.5 6.0 V VSW Switch I/O Voltage USB -0.5 V BUS+0.5 V Stereo/Mono Audio Path Active Vcc-8.5 V CC +0.5 All Other Channels -0.5 V CC +0.5 IIK Input Clamp Diode Current -50 mA ISW Switch I/O Current (Continuous) USB 50 mA Audio 60 All Other Channels 50 ISWPEAK Peak Switch Current (Pulsed at 1ms Duration, <10% Duty Cycle) USB 150 mA Audio 150 mA All Other Channels 150 mA TSTG Storage Temperature Range -65 +150 °C TJ Maximum Junction Temperature +150 °C TL Lead Temperature (Solder ing, 10 Seconds) +260 °C ESD IEC 61000-4-2 System USB Connector Pins (D+, D-, VBUS) Air Gap 15 kV Contact 8 Human Body Model, JEDEC JESD22-A114 All Pins 3 Charged Device Model, JEDEC JESD22-C101 All Pins 2 Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device oper ation. Recommended operating conditions are specified to ens ure optimal performance to the datasheet specificat ions. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Max. Unit VCC Battery Supply Voltage 2.7 4.4 V VSW Switch I/O Voltage USB/UART Path Active 0 4.4 V Audio Path Active V CC-7 2.0 V TA Operating Temper ature -40 +85 ºC

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA806 • Rev. 1.0.1 7 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Switch Path AC Electrical Characteristics(4) All typical value are for VCC =3.8V at 25ºC unless otherwise specified. Symbol Parameter V CC (V) Conditions TA = -40 to +85°C Unit Figure Min. Typ. Max. Xtalk Active Channel Crosstalk DP_CON to DM_CON Audio Mode 3.8 f=20kHz, R T=32Ω, CL=0pF -95 dB Figure 10 USB Mode 3.8 f=1MHz, RT=50Ω, CL=0pF -75 f=240MHz, RT=50Ω, CL=0pF -36 OIRR Off Isolation Rejection Ratio Audio Rejection L_HOST to DM_CON, R_HOST to DP_CON 3.8 f=20kHz, R T=32Ω, CL=0pF -100 dB Figure 9 USB Rejection DM_HOST to DM_CON, DP_HOST to DP_CON 3.8 f=1 MHz, R T=50Ω, CL=0pF -85 f=240MHz, RT=50Ω, CL=0pF -35 THD+N Total Harmonic Distortion + Noise (Audio Path) 3.8 20Hz to 20kHz, RL=16Ω, Input Signal Range 1.6V PP 0.10 % Figure 14 20Hz to 20kHz, RL=32Ω, Input Signal Range 1.6V PP 0.07 % Figure 14 Note: 4. Guaranteed by characteriza tion; not production tested. Capacitance Symbol Parameter V CC (V) Conditions TA = -40 to +85°C Unit Figure Min. Typ. Max. CIN Select Pins Capacitance(5) 0 V BIAS=0.2V 2.5 pF Figure 12 COFF(D+, D-) D+, D- On Capacitance (HS USB Mode)(5) 3.8 V BIAS=0.2V, f=1MHz 4.0 pF Figure 12 CON(D+, D-) D+, D- On Capacitance (HS USB Mode)(5) 3.8 V BIAS=0.2V, f=1MHz 6.8 pF Figure 13 Note: 5. Guaranteed by characteriza tion; not production tested.

B. DIMENSIONS ARE IN MILLIMETERS. E. DRAWING FILENAME: MKT-UMLP12Arev4.

0.10 C A B

Figure 15. 12-Lead, Ultrathin Molded Leadless Package (UMLP) warranty therein, which covers Fairchild products.

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSA806 • Rev. 1.0.1 12 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability