ISL54213 ® Data Sheet March 26, 2008 FN6663.0 MP3/USB 2.0 High Speed Switch with Negative Signal Handling and Mute Function Features The Intersil ISL54213 dual SPDT (Single Pole/Double Throw) switch combines low distortion audio and accurate USB 2.0 high speed data (480Mbps) signal switching in the same low voltage device. When operated with a 2.5V to 5.0V single supply, this analog switch allows audio signal swings below ground, allowing the use of a common USB and audio headphone connector in Personal Media Players and other portable battery-powered devices. • Low Distortion Negative Signal Capability • High Speed (480Mbps) and Full Speed (12Mbps) Signaling Capability per USB 2.0 • Mute Function • Low Distortion Headphone Audio Signals - THD+N at 1mW into 32Ω Load . . . . . . . . . . . . <0.013% • Crosstalk (100kHz) . . . . . . . . . . . . . . . . . . . . . . . . . -95dB • OFF-isolation (100kHz) . . . . . . . . . . . . . . . . . . . . . . 95dB The ISL54213 logic control pins are 1.8V compatible, which allows for control via a standard µcontroller. • Single Supply Operation (VDD) . . . . . . . . . . . . 2.5V to 5.0V The part has an audio enable control pin to open all switches and put the part in a mute state. It’s high off-isolation (95dB @ 100kHz) provides superior muting of audio signals. • Available in µTQFN and TDFN Packages • -3dB Bandwidth USB Switch . . . . . . . . . . . . . . . . . 736MHz • Compliant with USB 2.0 Short Circuit Requirements Without Additional External Components The ISL54213 is available in a small 10 Ld 2.1mmx1.6mm ultra-thin µTQFN package and a 10 Ld 3mmx3mm TDFN package. It operates over a temperature range of -40°C to +85°C. • Pb-Free (RoHS Compliant) Applications • MP3 and other Personal Media Players Related Literature • Cellular/Mobile Phones • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” • PDAs • Audio/USB Switching Application Block Diagram 3.3V µCONTROLLER VDD ISL54213 IN CTRL LOGIC CONTROL 4MΩ USB/HEADPHONE JACK 4MΩ VBUS DCOM D+ USB TRANSCEIVER COM + L R 50kΩ 50kΩ GND AUDIO CODEC 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2008. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL54213 Pinouts (Note 1) ISL54213 (10 LD 3.0mmx3.0mm TDFN) TOP VIEW CTRL ISL54213 (10 LD 2.1mmx1.6mm µTQFN) TOP VIEW 10 4MΩ VDD IN LOGIC CONTROL 1 VDD 1 IN 2 9 D- 4MΩ LOGIC CONTROL 10 CTRL 9 D- 8 D+ 7 L 6 R 4MΩ 2 8 D+ COM - 3 7 L COM + 4 4MΩ COM - 3 50kΩ 50kΩ COM + 6 R 4 GND 5 50kΩ 50kΩ GND 5 NOTE: 1. ISL54213 Switches Shown for IN = Logic “0” and CTRL = Logic “1”. Truth Table Ordering Information ISL54213 IN CTRL L, R D+, D- 0 0 OFF OFF 0 1 ON OFF 1 X OFF ON IN, CTRL: Logic “0” when ≤ 0.5V or Floating, Logic “1” when ≥ 1.4V with 2.7V to 3.6V Supply. Pin Descriptions PART NUMBER PART MARKING TEMP. RANGE (°C) PACKAGE (Pb-free) PKG. DWG. # ISL54213IRUZ-T GH (Notes 3, 4) -40 to +85 10 Ld µTQFN L10.2.1x1.6A ISL54213IRTZ-T 4213 (Notes 2, 4) -40 to +85 10 Ld TDFN L10.3x3A ISL54213IRTZ (Note 2) -40 to +85 10 Ld TDFN L10.3x3A 4213 NOTES: PIN NUMBER NAME 1 VDD 2 IN 3 COM- Voice and Data Common Pin 4 COM+ Voice and Data Common Pin 5 GND 6 R Audio Right Input 7 L Audio Left Input 8 D+ USB Differential Input 9 D- USB Differential Input 10 CTRL FUNCTION Power Supply Digital Control Input Ground Connection 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 4. Please refer to TB347 for details on reel specifications. Digital Control Input (Audio Enable) 2 FN6663.0 March 26, 2008 ISL54213 Absolute Maximum Ratings Thermal Information VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 5.5V Input Voltages D+, D- (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 2V to 5.5V L, R (Note 5) . . . . . . . . . . . . . . . . . . . . . . . - 2V to ((VDD) + 0.3V) IN, CTRL (Note 5) . . . . . . . . . . . . . . . . . . -0.3V to ((VDD) + 0.3V) Output Voltages COM-, COM+ (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . -2V to 5.5V Continuous Current (Audio Switches). . . . . . . . . . . . . . . . . ±150mA Peak Current (Audio Switches) (Pulsed 1ms, 10% Duty Cycle, Max). . . . . . . . . . . . . . . . ±300mA Continuous Current (USB Switches). . . . . . . . . . . . . . . . . . . ±40mA Peak Current (USB Switches) (Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . ±100mA ESD Ratings Human Body Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >3kV Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >250V Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >2kV Thermal Resistance (Typical, Notes 6 and 7)θJA (°C/W) θJC (°C/W) 10 Ld 2.1mmx1.6mm µTQFN Package 154 48.3 10 Ld 3mmx3mm TDFN . . . . . . . . . . . 58 18 Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C Maximum Storage Temperature Range. . . . . . . . . . . . -65°C to +150°C Pb-free reflow profile. . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 5. Signals on D+, D-, L, R, COM-, COM+, CTRL and IN exceeding VDD or GND by specified amount are clamped. Limit current to maximum current ratings. 6. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. 7. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside. Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: VDD = +3.0V, GND = 0V, VINH = VCTRLH = 1.4V, VINL = VCTRLL = 0.5V, (Note 8), Unless Otherwise Specified. PARAMETER TEST CONDITIONS TEMP MIN MAX (°C) (Notes 9, 10) TYP (Notes 9, 10) UNITS ANALOG SWITCH CHARACTERISTICS Audio Switches (L, R) Analog Signal Range, VANALOG VDD = 3.3V, IN = 0.5V, CTRL = 1.4V Full -1.5 - 1.5 V ON-resistance, rON VDD = 3.0V, IN = 0.5V, CTRL = 1.4V , ICOMx = 40mA, VL or VR = -0.85V to 0.85V (see Figure 3, Note 12) +25 - 2.5 2.8 Ω Full - - 3.5 Ω rON Matching Between Channels, ΔrON VDD = 3.0V, IN = 0.5V, CTRL = 1.4V , ICOMx = 40mA, VL or VR = Voltage at max rON over signal range of -0.85V to 0.85V (Notes 12 and 13) +25 - 0.1 0.25 Ω Full - - 0.27 Ω rON Flatness, rFLAT(ON) VDD = 3.0V, IN = 0.5V, CTRL = 1.4V , ICOMx = 40mA, VL or VR = -0.85V to 0.85V (Notes 11 and 12) +25 - 0.02 0.05 Ω Full - - 0.07 Ω ON-resistance, rON VDD = 5.0V, IN = 0V, CTRL = VDD, ICOMx = 40mA, VL or VR = -0.85V to 0.85V (see Figure 3) 25 - 2.3 - Ω ON-resistance, rON VDD = 4.2V, IN = 0V, CTRL = VDD, ICOMx = 40mA, VL or VR = -0.85V to 0.85V (see Figure 3) 25 - 2.35 - Ω ON-resistance, rON VDD = 2.85V, IN = 0V, CTRL = VDD, ICOMx = 40mA, VL or VR = -0.85V to 0.85V (see Figure 3) 25 - 2.72 - Ω Discharge Pull-Down Resistance, RL, RR VDD = 3.6V, IN = 0V, CTRL = 0V , VL or VR = -0.85V, 0.85V, VD+ and VD- = floating; measure current through the discharge pulldown resistor and calculate resistance value. +25 - 65 - kΩ Full 0 - VDD V 25 - 5.5 6.5 Ω Full - - 7 Ω USB Switches (D+, D-) Analog Signal Range, VANALOG VDD = 2.7V to 3.6V, IN = 1.4V, CTRL = 1.4V ON-resistance, rON (High-Speed) VDD = 3.3V, IN = 1.4V, CTRL = 1.4V, ICOMx = 40mA, VD+ or VD- = 0V to 400mV (see Figure 4, Note 12) 3 FN6663.0 March 26, 2008 ISL54213 Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: VDD = +3.0V, GND = 0V, VINH = VCTRLH = 1.4V, VINL = VCTRLL = 0.5V, (Note 8), Unless Otherwise Specified. (Continued) PARAMETER TEST CONDITIONS rON Matching Between Channels, ΔrON VDD = 3.3V, IN = 1.4V, CTRL = 1.4V, ICOMx = 40mA, VD+ or VD- = Voltage at max rON (Notes 12 and 13) rON Flatness, rFLAT(ON) VDD = 3.3V, IN = 1.4V, CTRL = 1.4V, ICOMx = 40mA, VD+ or VD- = 0V to 400mV (Notes 11 and 12) ON-resistance, rON (Full-Speed) VDD = 3.3V, IN = 1.4V, CTRL = 1.4V, ICOMx = 1mA, VD+ or VD- = 3.3V (see Figure 4, Note 12) ON-resistance, rON TEMP MIN MAX (°C) (Notes 9, 10) TYP (Notes 9, 10) UNITS 25 - 0.05 0.25 Ω Full - - 0.55 Ω 25 - 0.5 0.55 Ω Full - - 1.0 Ω 25 - 25 30 Ω Full - - 35 Ω VDD = 5.0V, IN = VDD, CTRL = VDD, ICOMx = 1mA, VD+ or VD- = 5V (see Figure 4) +25 - 20 - Ω ON-resistance, rON VDD = 4.2V, IN = VDD, CTRL = VDD, ICOMx = 1mA, VD+ or VD- = 4.2V (see Figure 4) 25 - 22 - Ω ON-resistance, rON VDD = 2.85V, IN = VDD, CTRL = VDD, ICOMx = 1mA, VD+ or VD- = 2.85V (see Figure 4) 25 - 28 - Ω OFF-Leakage Current, ID+(OFF) or ID-(OFF) VDD = 3.6V, IN = 0V, CTRL = 3.6V, VCOM- or VCOM+ = 0.5V, 0V, VD+ or VD- = 0V, 0.5V, VL and VR = float 25 -5 1.5 5 nA Full -60 - 60 nA ON-Leakage Current, IDX VDD = 3.6V, IN = VDD, CTRL = 0V or VDD, VD+ or VD- = 2.7V, VCOM- or VCOM+ = Float, VL and VR = float 25 -11 2.5 11 nA Full -70 - 70 nA 52 - ns DYNAMIC CHARACTERISTICS USB Turn-ON Time, tON VDD = 3.0V, RL = 50Ω, CL = 10pF (see Figure 1) 25 - USB Turn-OFF Time, tOFF VDD = 3.0V, RL = 50Ω, CL = 10pF (see Figure 1) 25 - 20 - ns Audio Turn-ON Time, tON VDD = 3.0V, RL = 50Ω, CL = 10pF (see Figure 1) 25 - 2.5 - μs Audio Turn-OFF Time, tOFF VDD = 3.0V, RL = 50Ω, CL = 10pF (see Figure 1) 25 - 50 - ns Break-Before-Make Time Delay, VDD = 3.0V, RL = 50Ω, CL = 10pF (see Figure 2) tD 25 - 44 - ns Skew, tSKEW VDD = 3.0V, IN = 3V, CTRL = 3V, RL = 45Ω, CL = 10pF, tR = tF = 720ps at 480Mbps, (Duty Cycle = 50%) (see Figure 7) 25 - 50 - ps Total Jitter, tJ VDD =3.0V, IN = 3V, CTRL = 3V, RL = 50Ω, CL = 10pF, tR = tF = 750ps at 480Mbps 25 - 210 - ps Propagation Delay, tPD VDD = 3.0V, IN = 3V, CTRL = 3V, RL = 45Ω, CL = 10pF (see Figure 7) 25 - 250 - ps Audio Crosstalk R to COM-, L to COM+ VDD = 3.0V, IN = 0V, CTRL = 3.0V, RL = 32Ω, f = 20Hz to 20kHz, VR or VL = 0.707VRMS (2VP-P) (see Figure 6) 25 - -112 - dB Crosstalk (Audio to USB, USB to Audio) VDD = 3.0V, RL = 50Ω, f = 100kHz (see Figure 6) 25 - -95 - dB OFF-isolation VDD = 3.0V, RL = 50Ω, f = 100kHz 25 - 95 - dB OFF-isolation VDD = 3.0V, RL = 32Ω, f = 20Hz to 20kHz 25 - 112 - dB Total Harmonic Distortion f = 20Hz to 20kHz, VDD = 3.0V, IN = 0V, CTRL = 3.0V, VL or VR = 180mVRMS (509mVP-P), RL = 32Ω 25 - 0.013 - % Total Harmonic Distortion f = 20Hz to 20kHz, VDD = 3.0V, IN = 0V, CTRL = 3.0V, VL or VR = 0.707VRMS (2VP-P), RL = 32Ω 25 - 0.06 - % USB Switch -3dB Bandwidth Signal = 0dBm, 0.2VDC offset, RL = 50Ω, CL = 5pF 25 - 736 - MHz D+/D- OFF-capacitance, CDxOFF f = 1MHz, VDD = 3.0V, IN = 0V, CTRL = 3.0V, VD- or VD+ = VCOMx = 0V (see Figure 5) 25 - 3 - pF L/R OFF-capacitance, CLOFF, CROFF f = 1MHz, VDD = 3.0V, IN = 3.0V, CTRL = 0V or 3V, VL or VR = VCOMx = 0V (see Figure 5) 25 - 5 - pF COM ON-capacitance, CCOMx(ON) f = 1MHz, VDD = 3.0V, IN = 3.0V, CTRL = 0V or 3V, VD- or VD+ = VCOMx = 0V (see Figure 5) 25 - 8 - pF 4 FN6663.0 March 26, 2008 ISL54213 Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: VDD = +3.0V, GND = 0V, VINH = VCTRLH = 1.4V, VINL = VCTRLL = 0.5V, (Note 8), Unless Otherwise Specified. (Continued) PARAMETER TEST CONDITIONS TEMP MIN MAX (°C) (Notes 9, 10) TYP (Notes 9, 10) UNITS POWER SUPPLY CHARACTERISTICS Power Supply Range, VDD Positive Supply Current, IDD (Audio Mode) VDD = 3.6V, IN = 0V, CTRL = 3.6V Positive Supply Current, IDD (USB Mode) VDD = 3.6V, IN = 3.6V, CTRL = 3.6V Positive Supply Current, IDD (Mute State) VDD = 3.6V, IN = 0V, CTRL = 0V Power OFF-current, IDx ICOMx VDD = 0V, VDx = VCOMx = 5.25V, IN = CTRL = Float Full 2.5 25 - Full - 25 - Full - 5.0 V 13 µA - 15 µA 2 4.5 µA - 5.5 µA 6 25 - 2 4.5 µA Full - - 7 µA 25 - 7 - µA - - 0.5 V DIGITAL INPUT CHARACTERISTICS Voltage Low, VINL, VCTRLL VDD = 2.7V to 3.6V Full Voltage High, VINH, VCTRLH VDD = 2.7V to 3.6V Full 1.4 - - V Input Current, IINL, ICTRLL VDD = 3.6V, IN = 0V, CTRL = 0V Full -50 20 50 nA Input Current, IINH VDD = 3.6V, IN = 3.6, CTRL = 0V Full -2 1.1 2 µA Input Current, ICTRLH VDD = 3.6V, IN = 0V, CTRL = 3.6V Full -2 1.1 2 µA CTRL Pull-Down Resistor, RCTRL VDD = 3.6V, IN = 0V, CTRL = 3.6V; measure current through the internal pull-down resistor and calculate resistance value. Full - 4 - MΩ IN Pull-Down Resistor, RIN VDD = 3.6V, IN = 3.6V, CTRL = 3.6V; measure current through the internal pull-down resistor and calculate resistance value. Full - 4 - MΩ NOTES: 8. Vlogic = Input voltage to perform proper function. 9. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. 10. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested. 11. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range. 12. Limits established by characterization and are not production tested. 13. rON matching between channels is calculated by subtracting the channel with the highest max rON value from the channel with lowest max rON value, between L and R or between D+ and D-. 5 FN6663.0 March 26, 2008 ISL54213 Test Circuits and Waveforms VINH LOGIC INPUT 50% VINL CTRL VINPUT tOFF SWITCH INPUT VINPUT SWITCH INPUT VOUT AUDIO OR USB COMx IN VOUT 90% 90% SWITCH OUTPUT C VDD tr < 20ns tf < 20ns VIN CL 10pF RL 50Ω GND 0V tON Logic input waveform is inverted for switches that have the opposite logic sense. Repeat test for all switches. CL includes fixture and stray capacitance. RL V OUT = V (INPUT) -----------------------R L + r ON FIGURE 1A. MEASUREMENT POINTS FIGURE 1B. TEST CIRCUIT FIGURE 1. SWITCHING TIMES VDD C CTRL VINH D- OR D+ LOGIC INPUT VINPUT VOUT COMx L OR R VINL CL 10pF RL 50W IN VOUT 90% SWITCH OUTPUT GND VIN 0V tD Repeat test for all switches. CL includes fixture and stray capacitance. FIGURE 2B. TEST CIRCUIT FIGURE 2A. MEASUREMENT POINTS FIGURE 2. BREAK-BEFORE-MAKE TIME VDD VDD C C rON = V1/40mA rON = V1/40mA CTRL CTRL D- OR D+ L OR R VL OR VR VD- OR VD+ IN V1 40mA 0V OR FLOAT 40mA COMx IN V1 VDD COMx GND GND Repeat test for all switches. Repeat test for all switches. FIGURE 3. AUDIO rON TEST CIRCUIT 6 FIGURE 4. USB rON TEST CIRCUIT FN6663.0 March 26, 2008 ISL54213 Test Circuits and Waveforms (Continued) VDD VDD C CTRL C CTRL AUDIO OR USB SIGNAL GENERATOR L OR R IN IMPEDANCE ANALYZER 32Ω COMx IN 0V OR VDD 0V COMx GND R OR L COMx ANALYZER NC GND RL Repeat test for all switches. Signal direction through switch is reversed, worst case values are recorded. Repeat test for all switches. FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT FIGURE 5. CAPACITANCE TEST CIRCUIT VDD C tri CTRL 90% DIN+ 10% 50% tskew_i DIN90% VDD IN 15.8Ω DIN+ COM+ 10% 15.8Ω DIN- tfi tro 45Ω CL 143Ω 50% OUT+ D+ COM- OUT- D- 45Ω CL 143Ω 90% GND 10% 50% OUT+ OUT- tskew_o 50% 90% tf0 10% |tro - tri| Delay Due to Switch for Rising Input and Rising Output Signals. |tfo - tfi| Delay Due to Switch for Falling Input and Falling Output Signals. |tskew_0| Change in Skew through the Switch for Output Signals. |tskew_i| Change in Skew through the Switch for Input Signals. FIGURE 7A. MEASUREMENT POINTS FIGURE 7B. TEST CIRCUIT FIGURE 7. SKEW TEST 7 FN6663.0 March 26, 2008 ISL54213 Application Block Diagrams 3.3V VDD ISL54213 USB/HEADPHONE JACK IN CTRL µCONTROLLER LOGIC CONTROL VBUS 4MΩ 4MΩ DCOM D+ USB HIGH-SPEED TRANSCEIVER COM + L AUDIO CODEC R 50kΩ 50kΩ GND FIGURE 8. LOGIC CONTROL VIA MICROPROCESSOR 3.3V VDD ISL54213 IN USB/HEADPHONE JACK CTRL µCONTROLLER LOGIC CONTROL VBUS 4MΩ 4MΩ 500kΩ DCOM D+ USB HIGH-SPEED TRANSCEIVER COM + L R 50kΩ AUDIO CODEC 50kΩ GND FIGURE 9. LOGIC CONTROL VIA VBUS VOLTAGE FROM COMPUTER OR USB HUB Detailed Description The ISL54213 device is a dual single pole/double throw (SPDT) analog switch that operates from a single DC power supply in the range of 2.5V to 5.0V. It was designed to function as a dual 2 to 1 multiplexer to select between USB differential data signals and audio L and R stereo signals. It comes in a tiny µTQFN and TDFN packages for use in MP3 players, PDAs, cellular phones and other personal media players. 8 The part consists of two 2.5Ω audio switches and two 5.5Ω USB switches. The audio switches can accept signals that swing below ground. They were designed to pass audio left and right stereo signals, that are ground referenced, with minimal distortion. The USB switches were designed to pass high-speed USB differential data signals with minimal edge and phase distortion. The ISL54213 was specifically designed for MP3 players, personal media players and cellular phone applications that need to combine the audio headphone jack and the USB FN6663.0 March 26, 2008 ISL54213 data connector into a single shared connector, thereby saving space and component cost. Typical Application Block Diagrams of this functionality are shown in Figures 8 and 9. The ISL54213 has a single logic control pin (IN) that selects between the audio switches and the USB switches. This pin can be driven Low or High to switch between the audio CODEC drivers and USB transceiver of the MP3 player or cellular phone. The ISL54213 also contains a logic control pin (CTRL) that when driven Low while IN is Low, opens all switches and puts the part into the mute state. The USB switches can also pass USB full-speed signals (12Mbps) with minimal distortion and meet all the USB requirements for USB 2.0 full-speed signaling. See Figure 13 for Full-speed Eye Pattern taken with switch in the signal path. The maximum signal range for the USB switches is from -1.5V to VDD. The signal voltage at D- and D+ should not be allow to exceed the VDD voltage rail or go below ground by more than -1.5V. The USB switches are active (turned ON) whenever the IN voltage is ≥ to 1.4V. A detailed description of the two types of switches are provided in the following sections. ISL54213 Operation Audio Switches The following will discuss using the ISL54213 in the Typical Application Block Diagrams shown in Figures 8 and 9. The two audio switches (L, R) are 2.5Ω switches that can pass signals that swing below ground by as much as 1.5V. They were designed to pass ground reference stereo signals with minimal insertion loss and very low distortion over a ±1V signal range. Crosstalk between the audio channels is -112dB over the audio band. Crosstalk between the audio channel and USB channel is -95dB at 100kHz. These switches have excellent off-isolation, 112dB, over the audio band with a 32Ω load. Over a signal range of ±1V (0.707VRMS) with VDD > 2.7V, these switches have an extremely low rON resistance variation. They can pass ground referenced audio signals with very low distortion (<0.06% THD+N) when delivering 15.6mW into a 32Ω headphone speaker load. See Figures 10 and 11. These switches are bi-directional switches. In typical applications, the audio drivers would be connected at the L and R side of the switch (pins 7 and 8) and the speaker loads would be connected at the COM side of the switch (pins 3 and 4). The audio switches are active (turned ON) whenever the IN voltage is ≤ 0.5V or floating and the CTRL voltage ≥ to 1.4V. USB Switches The two USB switches (D+, D-) are bidirectional switches that can pass rail-to-rail signals. When powered with a 3.3V supply, these switches have a nominal rON of 5.5Ω over the signal range of 0V to 400mV with a rON flatness of 0.5Ω. The rON matching between the D+ and D- switches over this signal range is only 0.05Ω ensuring minimal impact by the switches to USB high speed signal transitions. As the signal level increases, the rON resistance increases. At signal level of 3.3V, the switch resistance is nominally 25Ω. The USB switches were specifically designed to pass USB 2.0 high-speed (480Mbps) differential signals typically in the range of 0V to 400mV. They have low capacitance and high bandwidth to pass the USB high-speed signals with minimum edge and phase distortion to meet USB 2.0 high speed signal quality specifications. See Figure 12. 9 VDD SUPPLY The DC power supply connected at VDD (pin 1) provides the required bias voltage for proper switch operation. The part can operate with a supply voltage in the range of 2.5V to 5.0V. In a typical USB/Audio application for portable battery powered devices, the VDD voltage will come from a battery or an LDO and be in the range of 2.7V to 3.6V. For best possible USB full-speed operation (12Mbps), it is recommended that the VDD voltage be ≥2.5V in order to get a USB data signal level above 2.5V. LOGIC CONTROL The state of the ISL54213 device is determined by the voltage at the IN pin (pin 2) and the CTRL pin (pin 10). These logic pins are 1.8V logic compatible when VDD is in the range of 2.7V to 3.6V and can be controlled by a standard µprocessor. The part has three states or modes of operation. The Audio Mode, USB Mode and Mute Mode. Refer to the “Truth Table” on page 2. The IN and CTRL pins are internally pulled low through a 4MΩ resistor to ground and can be left floating or tri-stated by the microprocessor. The CTRL control pin is only active when IN is logic “0”. Logic control voltage levels: IN = Logic “0” (Low) when VIN ≤ 0.5V or Floating. IN = Logic “1” (High) when VIN ≥ 1.4V CTRL = Logic “0” (Low) when ≤ 0.5V or Floating. CTRL = Logic “1” (High) when ≥ 1.4V Audio Mode If the IN pin = Logic “0” and CTRL pin = Logic “1”, the part will be in the Audio mode. In Audio mode, the L (left) and R (right) 2.5Ω audio switches are ON and the D- and D+ 5.5Ω switches are OFF (high impedance). When nothing is plugged into the common connector or a headphone is plugged into the common connector, the µprocessor will sense that there is no voltage at the VBUS pin of the connector and will drive and hold the IN control pin FN6663.0 March 26, 2008 ISL54213 of the ISL54213 low. As long as the CTRL = Logic “1,” the ISL54213 part will be in the audio mode and the audio drivers of the media player can drive the headphones and play music. USB Mode If the IN pin = Logic “1” and CTRL pin = Logic “0” or Logic “1”, the part will go into USB mode. In USB mode, the D- and D+ 5.5Ω switches are ON and the L and R 2.5Ω audio switches are OFF (high impedance). When a USB cable from a computer or USB hub is connected at the common connector, the µprocessor will sense the presence of the 5V VBUS voltage and drive the IN pin voltage high. The ISL54213 part will go into the USB mode. In USB mode, the computer or USB hub transceiver and the MP3 player or cell phone USB transceiver are connected and digital data will be able to be transmitted back and forth. When the USB cable is disconnected, the µprocessor will sense that the 5V VBUS voltage is no longer connected and will drive the IN pin low and put the part back into the Audio or Mute mode. Mute Mode If the IN pin = Logic “0” and CTRL pin = Logic “0”, the part will be in the Mute mode. In the Mute mode, the audio switches and the USB switches are OFF (high impedance). In this state the switches have excellent off-isolation (112dB over the audio band with a 32Ω load) for muting of audio signals. from the computer or USB hub. See the application block diagram in Figure 9. When a headphone or nothing is connected at the common connector, the internal 4MΩ pull-down will pull the IN pin low putting the ISL54213 in the Audio or Mute mode, depending on the condition of the CTRL pin. When a USB cable is connected at the common connector, the voltage at the IN pin will be driven to 5V and the part will automatically go into the USB mode. When the USB cable is disconnected from the common connector, the voltage at the IN pin will be pulled low by the pull-down resistor and return to the Audio or Mute mode, depending on the condition of the CTRL pin. Note: The ISL54213 contains an internal diode between the IN pin and VDD pin. Whenever the IN voltage is greater than the VDD voltage by more than 0.7V, current will flow through this diode into the VDD power supply bus. An external series resistor in the range of 100kΩ to 500kΩ is required at the IN logic pin to limit the current when driving it with the VBUS voltage. This allows the VBUS voltage from a computer or USB hub (4.4V to 5.25V) to drive the IN pin while the VDD voltage is in the range of 2.5V to 3.6V. A 500kΩ resistor will limit the current to 2.76µA and still allow the IN logic voltage to go to around 3.67V which is will above the required VINH level of 1.4V. A smaller series resistor can be used but more current will flow. USING THE COMPUTER VBUS VOLTAGE TO DRIVE THE “IN” PIN Rather than using a microprocessor to control the IN logic pin, one can directly drive the IN pin using the VBUS voltage Typical Performance Curves TA = +25°C, Unless Otherwise Specified. 0.11 0.10 0.10 RLOAD = 32Ω VLOAD = 0.707VRMS RLOAD = 32Ω VDD = 3V 0.08 2.5VP-P THD+N (%) THD+N (%) 0.09 0.08 0.07 VDD = 2.6V 0.06 VDD = 3.6V 0.05 0.04 20 3VP-P VDD = 2.7V 0.06 0.04 1VP-P VDD = 3V 200 2k FREQUENCY (Hz) 20k FIGURE 10. THD+N vs SUPPLY VOLTAGE vs FREQUENCY 10 2VP-P 0.02 20 200 2k FREQUENCY (Hz) 20k FIGURE 11. THD+N vs SIGNAL LEVELS vs FREQUENCY FN6663.0 March 26, 2008 ISL54213 VOLTAGE SCALE (0.1V/DIV) Typical Performance Curves TA = +25°C, Unless Otherwise Specified. (Continued) TIME SCALE (0.2ns/DIV) FIGURE 12. EYE PATTERN: 480Mbps WITH USB SWITCHES IN THE SIGNAL PATH 11 FN6663.0 March 26, 2008 ISL54213 Typical Performance Curves TA = +25°C, Unless Otherwise Specified. (Continued) VOLTAGE SCALE (0.5V/DIV) VDD = 3.3V TIME SCALE (10ns/DIV) FIGURE 13. EYE PATTERN: 12Mbps USB SIGNAL WITH USB SWITCHES IN THE SIGNAL PATH 12 FN6663.0 March 26, 2008 ISL54213 Typical Performance Curves TA = +25°C, Unless Otherwise Specified. (Continued) -65 -70 0 RL = 50Ω VSIGNAL = 0.2VP-P TO 2VP-P RLOAD = 32Ω VLOAD = 0.707VRMS -20 -75 NORMALIZED GAIN (dB) OFF-ISOLATION (dB) -80 -85 -90 -95 -100 -105 -110 -115 -40 -60 -80 -120 -125 -100 -130 -135 -140 20 50 100 200 500 1k 2k 5k 10k 20k -120 0.001M 0.01M 0.1M FREQUENCY (Hz) FIGURE 14. AUDIO CHANNEL OFF-ISOLATION vs FREQUENCY 100M 500M 0 USB SWITCH RL = 50Ω VSIGNAL = 0.2VP-P TO 2VP-P 0 -20 -1 -2 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 10M FIGURE 15. OFF-ISOLATION AUDIO SWITCHES 1 -3 -4 RL = 50Ω 10M 100M FREQUENCY (Hz) VDCOFFSET = 1.5VDC -40 -60 -80 -100 VSIGNAL = 0.2VP-P TO 2VP-P 1M 1M FREQUENCY (Hz) 1G -120 0.001M 0.01M 0.1M 1M 10M FREQUENCY (Hz) 100M 500M FIGURE 17. OFF-ISOLATION USB SWITCHES FIGURE 16. FREQUENCY RESPONSE Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 98 PROCESS: Submicron CMOS 13 FN6663.0 March 26, 2008 ISL54213 Ultra Thin Quad Flat No-Lead Plastic Package (UTQFN) D 6 INDEX AREA A L10.2.1x1.6A B N 10 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE MILLIMETERS E SYMBOL 2X MIN NOMINAL MAX 1 2X 2 0.10 C TOP VIEW C A 0.05 C SEATING PLANE 1 0.45 0.50 0.55 - A1 - - 0.05 - 0.127 REF - b 0.15 0.20 0.25 5 D 2.05 2.10 2.15 - E 1.55 1.60 1.65 - A1 e SIDE VIEW k 0.20 - - L 0.35 0.40 0.45 (DATUM A) PIN #1 ID A A3 0.10 C 4xk 2 NX L 0.50 BSC - NX b e 2 Nd 4 3 Ne 1 3 0 12 - NOTES: 5 BOTTOM VIEW CL (A1) L 5 e SECTION "C-C" TERMINAL TIP C C 4 Rev. 3 6/06 0.10 M C A B 0.05 M C 3 (ND-1) X e - 10 (DATUM B) N-1 - N θ N NX (b) NOTES 0.10 C FOR ODD TERMINAL/SIDE b 1. Dimensioning and tolerancing conform to ASME Y14.5-1994. 2. N is the number of terminals. 3. Nd and Ne refer to the number of terminals on D and E side, respectively. 4. All dimensions are in millimeters. Angles are in degrees. 5. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature. 7. Maximum package warpage is 0.05mm. 8. Maximum allowable burrs is 0.076mm in all directions. 9. Same as JEDEC MO-255UABD except: No lead-pull-back, "A" MIN dimension = 0.45 not 0.50mm "L" MAX dimension = 0.45 not 0.42mm. 10. For additional information, to assist with the PCB Land Pattern Design effort, see Intersil Technical Brief TB389. 2.50 1.75 0.05 MIN L 2.00 0.80 0.275 0.10 MIN DETAIL “A” PIN 1 ID 0.50 0.25 LAND PATTERN 10 14 FN6663.0 March 26, 2008 ISL54213 Thin Dual Flat No-Lead Plastic Package (TDFN) L10.3x3A 2X 0.10 C A A 10 LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE D MILLIMETERS 2X 0.10 C B SYMBOL MIN NOMINAL MAX NOTES A 0.70 0.75 0.80 - A1 - - 0.05 - E A3 6 INDEX AREA TOP VIEW B // A C SEATING PLANE 0.08 C b 0.20 0.25 0.30 5, 8 D 2.95 3.0 3.05 - D2 2.25 2.30 2.35 7, 8 E 2.95 3.0 3.05 - E2 1.45 1.50 1.55 7, 8 e 0.50 BSC - k 0.25 - - - L 0.25 0.30 0.35 8 A3 SIDE VIEW D2 (DATUM B) 0.10 C 0.20 REF 7 8 N 10 2 Nd 5 3 Rev. 3 3/06 D2/2 NOTES: 6 INDEX AREA 1 2 1. Dimensioning and tolerancing conform to ASME Y14.5-1994. 2. N is the number of terminals. NX k 3. Nd refers to the number of terminals on D. (DATUM A) 4. All dimensions are in millimeters. Angles are in degrees. E2 E2/2 5. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature. NX L N N-1 NX b 8 e (Nd-1)Xe REF. BOTTOM VIEW 5 7. Dimensions D2 and E2 are for the exposed pads which provide improved electrical and thermal performance. 0.10 M C A B 8. Nominal dimensions are provided to assist with PCB Land Pattern Design efforts, see Intersil Technical Brief TB389. 9. Compliant to JEDEC MO-229-WEED-3 except for D2 dimensions. CL NX (b) (A1) L1 5 9 L e SECTION "C-C" C C TERMINAL TIP FOR ODD TERMINAL/SIDE All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 15 FN6663.0 March 26, 2008