FSA321 — USB2.0 Hi-Speed (480Mbps) and Audio Switches with Negative Signal Capability and Built-in Termination on Unselected Audio Paths Features Description The FSA321 is a Double-Pole, Double Throw (DPDT) multiplexer that combines a low-distortion audio and a USB2.0 High-Speed (HS) switch path. This configuration enables audio and USB data to share a common connector port. The architecture is designed to allow audio signals to swing below ground. This means a common USB and headphone jack can be used for personal media players and portable peripheral devices. Audio: 1.8 Typical On Resistance HS-USB: 8 Typical On Resistance HS-USB: 5pF Typical On Capacitance USB Path -3db Bandwidth: > 720MHz Negative Swing Capable Audio Channel Power-off Protection on Common D+/R, D-/L Ports Since USB2.0 is an industry standard for shared datapath in portable devices, FSA321 can be configured for automatic VBUS detection. The FSA321 includes a power-off feature as well as over-voltage tolerance to minimize current consumption when VSW exceeds VCC. Automatic USB Detection (Configurable) OVT on all I/O Ports Flow-Through Pin Out Eliminates PCB Vias Built-In Termination on Unselected Audio Paths to Inhibit Audio Pop Typical applications involve switching in portables and consumer applications, such as cell phones, digital cameras, and notebooks with hubs or controllers. Applications . MP3, Cell Phone, PDA, Digital Camera, and Notebook LCD Monitor, TV, and Set-Top Box Ordering Information Part Number Package Number Top Mark Package Description FSA321UMX MLP010A GL 10-Lead Quad, Ultrathin Molded Leadless Package (MLP), 1.4 x 1.8mm VCC USB Sel A/LP Sel Control Block Rpd Rpd D+ D+/R R RT DD-/L L RT Figure 1. Analog Symbol © 2007 Fairchild Semiconductor Corporation FSA321 • Rev 1.0.6 www.fairchildsemi.com FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability March 2012 L 3 GND 4 A/LP Sel 5 R D- 2 1 6 7 10 D+ 9 V CC 8 USB Sel D -/L D + /R Figure 2. UMLP Pin Definitions Pin # Name 9 VCC Description Power supply 5 A/LP Sel Audio Select Override and Power-Save Mode. This pin can be used to override USB Sel for applications where analog audio is transmitted on the USB D+, D- lines. This same select pin is used to put the FSA321 in low-power mode when USB Sel is LOW, not transmitting audio signals or USB data. The FSA321 has a weak internal pull-down, setting its default state to LOW and allowing this pin to float when not in use. 8 USB Sel USB Path select pin. Can be connected to USB connector VBUS pin for automatic USB detection. 10, 1 D+, D- 2, 3 R, L 7, 6 USB data bus input sources Audio right and left input sources D+/R, D-/L USB and audio common connector ports Truth Table VCC USB Sel(1) A/LP Sel LOW (2) (2) Audio Mode USB Mode Remarks OFF OFF Disabled Inputs High-Z HIGH HIGH LOW OFF ON USB Communication HIGH(2) HIGH(2) HIGH(2) ON OFF Audio Override on USB HIGH(2) LOW HIGH(2) OFF OFF Low Power Mode (2) LOW LOW ON OFF Audio Out HIGH Notes: 1. Forcing USB Sel HIGH when VBUS is present allows for automatic USB detection. 2. HIGH is the threshold as defined to meet USB2.0 VCC requirements and audio supply threshold in a system (see DC Tables). © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 2 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability Pin Configuration The FSA321 is a combined USB and audio switch that enables sharing the D+/D- lines of a USB connector with stereo audio CODEC outputs. The USB Sel pin has an internal pull-down resistor that results in a default audiomode configuration. The switch can be configured for auto USB detection by connecting the VBUS pin to the USB Sel pin. The audio switch path also handles negative signals, eliminating the need for large coupling capacitors and greatly reducing the potential for audio pop. Termination resistors on the audio R and L ports are enabled when the switch is in USB mode, this also helps reduce audio pop when enabling the audio path. The FSA321 allows for an audio override state by forcing A/LP Sel high when USB Sel is high. This is useful for USB car kit applications or if the device is in a cradle charger when “Send/End” is pressed. Application Diagram VCC 0.1µF USB 2.0 Hi-Speed Controller D+ USB Sel D+/R FSA321 R Audio CODEC D-/L Shared USB and Audio Connector D- L Figure 3. Typical Application Diagram © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 3 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability Functional Description 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 VCC Parameter Min. Max. Unit Supply Voltage -0.5 4.6 V USB Sel USB Select Control Signal -0.5 6.0 V A/LP Sel Power Save Mode Control Signal -0.5 6.0 V USB Path Active -1.0 4.6 Audio Path Active VCC-4.6V 4.6 -0.50 5.25 Switch I/O Voltage(3) VSW USB Path Active (3) DC Switch I/O Voltage IIK Audio Path Active Input Clamp Diode Current ISW Switch I/O Current (Continuous) ISWPEAK Peak Switch Current (Pulsed at 1ms Duration, <10% Duty Cycle) TSTG V -50 mA USB 50 mA Audio 100 mA USB 100 mA Audio Storage Temperature Range -65 250 mA +150 C TJ Maximum Junction Temperature +150 C TL Lead Temperature (Soldering, 10 seconds) +260 C I/O to GND Human Body Model, JEDEC: JESD22-A114 ESD 11 All Other Pins 8 VCC to GND 12 Charged Discharge Model, JEDEC: JESD22-C101 USB Connection Pins (D+/R, D-/L, VBUS) IEC61000-4-2 System kV 2 Air Gap 15 Contact 8 Note: 3. 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 VCC Parameter Supply Voltage USB Sel USB Select Control Signal A/LP Sel Power-Save Mode Control Signal VSW Switch I/O Voltage TA Operating Temperature JA Thermal Resistance (Free Air) © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 Min. Max. Units 1.8 4.3 V 0 5.5 V 0 5.5 V USB Path Active 0 4.3 V Audio Path Active VCC-4.3V 4.3 V -40 +85 ºC 284 ºC/W UMLP www.fairchildsemi.com 4 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability Absolute Maximum Ratings All typical values are at 25ºC unless otherwise specified. Symbol Parameter VCC (V) Conditions TA = - 40 to +85°C Min. Typ.(6) Max. Unit Common Pins VIK Clamp Diode Voltage 1.8 to 4.3 IIK = -18mA -1.2 VIH Control Input Voltage HIGH VIL Control Input Voltage LOW IIN USB Sel and A/LP Sel Input Current 1.8 to 4.3 IOFF Power Off Leakage Current 0 RPD A/LP Sel and USB Sel Internal Pull-Down Resistors 1.8 to 4.3 3 M RT Audio Path Termination Resistors 1.8 to 4.3 200 1.8 to 2.7 1.0 2.7 to 4.3 1.2 V 1.8 to 2.7 0.3 2.7 to 4.3 0.5 VIN = 0V -1 1 VIN = 5.5V -1 10 D+/R, D-/L Common Ports, VSW = 0V to 5.5V, All other Pins = 0V 25 µA µA USB Switch Path RONUSB ∆RONUSB USB Analog Signal Range 1.8 to 4.3 HS Switch On Resistance(4) 1.8 to 4.3 VD+/D- = 0V, 0.4V, ION = 8mA 0 HS Delta RON(5,6) 1.8 to 4.3 VD+/D- = 0V, ION = 8mA 8 4.3 V 11 Ω 0.4 Ω Audio Switch Path RONAudio Audio Analog Signal Range 1.8 to 4.3 Audio Switch On Resistance 2.7 ∆RONAudio Audio Delta RON(5) (7) RFLAT(Audio) Audio RON Flatness VCC4.3V VL/R = -1.0V, 0V, 1.0V ION = 60mA 1.8 VCC V 2.7 Ω 2.7 to 4.3 VL/R = 0.7V ION = 60mA 0.4 Ω 2.7 to 4.3 ION = 60mA 0.8 1.5 Ω Total Switch Current Consumption ICC ICC_LPM ICCT USB Active Mode Supply Current 1.8 to 4.3 A/LP Sel = LOW, USB Sel= HIGH, IOUT = 0 0.5 0.8 mA USB Low Power Mode or Audio Mode Quiescent Supply Current A/LP Sel = HIGH, VCC = 1.8-4.3V 10 15 µA VUSB Sel = 2.6V 10 15 VUSB Sel = 1.8V 15 20 VUSB Sel = 2.6V 0.6 0.9 VUSB Sel = 1.8V 0.65 1.00 Increase in ICC current per control voltage and VCC LOW POWER Mode A/LP Sel HIGH Increase in ICC current per control voltage and VCC ACTIVE Mode A/LP Sel LOW 1.8 to 4.3 4.3 µA mA Notes: 4. On resistance is determined by the voltage drop between the A and B pins at the indicated current through the switch. 5. ∆ RON = RON max – RON min measured at identical VCC, temperature, and voltage. Worst-case signal path, audio or USB channel, is characterized. 6. Guaranteed by characterization, not production tested. 7. Flatness is defined as the difference between the maximum and minimum values of on resistance over the specified range of conditions. © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 5 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability DC Electrical Characteristics All typical value are for VCC = 3.3V at 25ºC unless otherwise specified. TA = - 40 to +85°C Symbol Parameter VCC (V) Conditions Min. Typ.(8) Unit Max. USB Switch Propagation Delay(8) 3.3 RL = 50Ω, CL = 0pF Figure 9 0.25 ns Non-Adjacent Channel Crosstalk (Audio Mode) 3.3 f = 20kHz, RT = 32Ω, CL = 0pF, Figure 17 -110 dB Non-Adjacent Channel Crosstalk (USB Mode) 3.3 f = 240MHz, RT = 20Ω, CL = 0pF Figure 17 -45 dB Off Isolation (Audio Mode) 3.3 f = 20kHz, RT = 32Ω, CL = 0pF -85 dB Off Isolation (USB Mode) 3.3 f = 240MHz, RT = 20Ω, CL = 0pF -40 dB BW -3db Bandwidth (USB Mode) 3.3 RT = 50Ω, CL = 0pF, Signal 0dBm, Figure 15 720 MHz THD Total Harmonic Distortion (Audio Mode) 3.3 f = 20Hz to 20kHz, RL = 32Ω, VIN = 2VPP Figure 14 0.11 % SNR Signal-to-Noise Ratio (Audio Mode) 3.3 f = 20Hz to 20kHz RL = 32Ω, VIN = 2VPP -90 dB tPDUSB XtalkA OIRR Note: 8. Guaranteed by characterization, not production tested. © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 6 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability AC Electrical Characteristics Symbol tSK(o) tSK(P) Parameter Channel-to-Channel Skew(9) (USB Mode) Skew of Opposite Transitions of the Same Output(9) VCC (V) Total Jitter Min. Typ. Unit Max. 3.3 35 ps 3.3 tR = tF = 750ps (10-90%) at 240MHz CL = 0pF, RL = 50Ω Figure 10 35 ps 3.3 RL = 50Ω, CL = 50pF, tR = tF = 500ps (10-90%) at 480Mbps (PRBS = 215 – 1) 130 ps (9) (USB Mode) TA = - 40°C to +85°C tR = tF = 750ps (10-90%) at 240MHz CL = 0pF, RL = 50Ω Figure 11 (USB Mode) tJ Conditions Note: 9. Guaranteed by characterization, not production tested. Capacitance Symbol CIN CON(D+/R, D-/L) Parameter Control Pin Input Capacitance D+/R, D-/L On Capacitance (USB Mode) VCC (V) Conditions TA = - 40°C to +85°C Min. 1.8 to 4.3 VBias = 0.2V Typ. Unit Max. 2.0 pF 1.8 to 4.3 VBias = 0.2V, f = 240MHz, Figure 13 5.4 pF 1.8 to 5.5 VBias = 0.2V, f = 1MHz, Figure 13 6.0 pF COFF(D+, D-) USB Path Off Capacitance 1.8 to 4.3 f = 1MHz, Figure 12 1.6 pF COFF(R/L) Audio Path Off Capacitance 1.8 to 4.3 f = 1MHz, Figure 12 3.5 pF © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 7 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability USB High-Speed-Related AC Electrical Characteristics VON I(OFF) A Dn or R/L VSW D+/R or D - /L GND D+, Dor R/L VSW ION GND D+/R or D- /L GND V R ON = VON / I ON CNTRL VCNTRL = fn ( VCC ) = fn ( VCC ) Figure 4. On Resistance Figure 5. Off Leakage D+, D- or R,L D+/R or D -/L VOUT D+, D - or R/L RL CL I A(ON) A D+/R or D-/L Vsw GND RL, RS, and CL, are functions of the application environment (see tables for specific values). CL includes test fixture and stray capacitance. VCNTRL = fn (VCC) On Leakage t RISE = 1µs GND VCNTRL = fn ( VCC) GND Figure 6. Vsw GND RS Figure 7. AC Test Circuit Load tFALL = 750ps tRISE= 750ps t FALL= 1µs Vbus 0.4V Input -VCNTRL 10% GND VOH 90% Vth(max) Vth(min) Output -VOUT VOL 90% tON VCNTRL = fn (VCC) Input – V D+/D 10% 50% 90% 50% 10% VOH 90% Output- VOUT tOFF VOL Vth =Vbusth or Vaudioth Figure 8. Turn-On / Turn-Off Waveforms (USB/Audio) © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 10% GND 90% 50% 50% tpLH tpHL Figure 9. USB Switch Propagation Delay Waveforms www.fairchildsemi.com 8 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability Test Diagrams tFALL = 750ps tRISE = 750ps 0.4V tRISE t FALL = 750ps = 750ps 0.4V Input – VD+/D 10% GND 90% 50% 10% Output1 - VOUT tpLH1 tpLH t sk(o) VOH t pHL Output2 - VOUT Figure 10. Pulse Skew: tSK(P) = | tPHL – tPLH | Dn or R/L or D+/R or D- /L 50% 50% tpLH2 tpHL2 Figure 11. Output Skew: tSK(O) = | tPLH1 – tPLH2 | or | tPHL1 – tPHL2 | Capacitance Dn or R/L or D+/R or D -/L Meter Capacitance Meter Figure 12. tpHL1 50% 50% VOL f = 1MHz 10% 50% 50% VOL VOL 50% VOH VOH Output-- VOUT 90% 50% 10% GND 90% 50% 90% Input – VD+/D - f = 240MHz VCNTRL = fn (VCC) VCNTRL = fn (VCC) Dn or R/L or D+/ R or D-/L Dn or R/L or D+/ R or D-/L Channel Off Capacitance Figure 13. Channel On Capacitance Audio Analyzer RS GND VIN VS GND VCNTRL GND GND VCNTROL = fn (VCC) RS and R are functions of the application VOUT RT GND T environment (see tables for specific values). Figure 14. Total Harmonic Distortion © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 9 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability Test Diagrams (Continued) FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability Test Diagrams (Continued) Network Analyzer RS VIN GND VS GND V CNTRL GND VOUT GND VCNTRL = fn (VCC) RT GND R S and R T are functions of the application environment (see tables for specific values). Figure 15. USB Bandwidth Network Analyzer RS RT VCNTRL GND VIN VS GND GND VOUT GND GND VCNTRL = fn (VCC ) RT R S and R T are functions of the application GND environment (see tables for specific values). Off Isolation = 20 Log (VOUT / VIN ) Figure 16. Channel Off Isolation Network Analyzer NC RS GND VIN VS VCNTRL GND GND RT GND VCNTRL= fn (VCC) GND RT RS and R T are functions of the application environment (see tables for specific values VOUT GND CROSSTALK = 20 Log (VOUT / VIN) Figure 17. Non-Adjacent Channel-to-Channel Crosstalk © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 10 1.40 0.15 C A 2X (9X) 1.70 B 0.563 0.663 1 2.10 1.80 PIN#1 IDENT 0.40 0.15 C TOP VIEW 0.55 MAX. 0.10 C (10X) 0.225 2X RECOMMENDED LAND PATTERN 0.152 1.45 0.08 C 0.55 SEATING C PLANE 0.05 SIDE VIEW 9X 0.45 0.40 1.85 0.35 (9X) 0.45 3 (10X) 0.225 6 DETAIL A OPTIONAL MINIMIAL TOE LAND PATTERN 0.40 1 NOTES: PIN#1 IDENT A. PACKAGE DOES NOT FULLY CONFORM TO JEDEC STANDARD. B. DIMENSIONS ARE IN MILLIMETERS. C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. D. LAND PATTERN RECOMMENDATION IS BASED ON FSC DESIGN ONLY. E. DRAWING FILENAME: MKT-UMLP10Arev3. 0.15 (10X) 0.25 10 BOTTOM VIEW 0.55 0.45 0.10 C A B 0.05 C 0.10 0.10 0.10 DETAIL A SCALE : 2X PACKAGE EDGE LEAD OPTION 1 SCALE : 2X LEAD OPTION 2 SCALE : 2X Figure 18. 10-Lead, Quad Ultrathin Molded Leadless Package (UMLP) Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 11 FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability Physical Dimensions FSA321 — USB2.0 Hi-Speed and Audio Switches with Negative Signal Capability © 2007 Fairchild Semiconductor Corporation FSA321 • Rev.1.0.6 www.fairchildsemi.com 12