ISL54206 ESIGNS R NEW D NT O F D E E ND COMME PL ACEM r a t N OT R E DED RE N te E n e M Data Sheet December 18, 2006 C M t O por NO R E C ical Sup rsil.com/tsc n h c e T r te ou contact ERSIL or www.in T N -I 8 8 1-8 MP3/USB 2.0 High Speed Switch with Negative Signal Handling FN6409.0 Features • High Speed (480Mbps) Signaling Capability per USB 2.0 The Intersil ISL54206 dual SPDT (Single Pole/Double Throw) switches combine low distortion audio and accurate USB 2.0 high speed data (480Mbps) signal switching in the same low voltage device. When operated with a 2.7V to 3.6V single supply these analog switches allow 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 • Control Pin to Open all Switches and Enter Low Power State • Low Distortion Headphone Audio Signals - THD+N at 20mW into 32Load . . . . . . . . . . . . . <0.1% • Cross-talk Audio Channels (20Hz to 20kHz) . . . . . -110dB • Single Supply Operation (VDD) . . . . . . . . . . . . 1.8V to 5.5V The ISL54206 logic control pins are 1.8V compatible which allows for control via a standard µcontroller. With a VDD voltage in the range of 2.7V to 3.6V the IN pin voltage can exceed the VDD rail allowing for the USB 5V VBUS voltage from a computer to directly drive the IN pin to switch between the audio and USB signal sources in the portable device. The part has an audio enable control pin to open all the switches and put the part in a low power state. • -3dB Bandwidth USB Switches . . . . . . . . . . . . . . . 630MHz • Available in µTQFN and TDFN Packages • Pb-Free Plus Anneal (RoHS Compliant) • Compliant with USB 2.0 Short Circuit Requirements Without Additional External Components Applications The ISL54206 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 to +85°C. • MP3 and Other Personal Media Players • Cellular/Mobile Phones • PDA’s Related Literature • Audio/USB Switching • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” • Application Note AN557 “Recommended Test Procedures for Analog Switches” Application Block Diagram VDD µCONTROLLER USB AND HEADPHONE JACK ISL54206 VBUS IN CTRL LOGIC CIRCUITRY 4M D- COM- D+ 50k COM+ USB HIGH-SPEED TRANSCEIVER L R CODEC 50k GND 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. 2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL54206 Pinouts (Note 1) ISL54206 (10 LD TDFN) TOP VIEW CTRL ISL54206 (10 LD ΜTQFN) TOP VIEW 10 4M VDD 1 9 D- IN 2 2 8 D+ COM - COM - 3 7 L COM + 4 6 R VDD 1 IN LOGIC CONTROL CTRL 9 D- 3 8 D+ COM + 4 7 L GND 5 6 R LOGIC CONTROL 50k 50k 50k 10 50k GND 5 4M NOTE: 1. ISL54206 Switches shown for IN = Logic “0” and CTRL = Logic “1”. Truth Table Pin Descriptions ISL54206 ISL54206 IN CTRL L, R D+, D- PIN NO. NAME 0 0 OFF OFF 1 VDD 0 1 ON OFF 2 IN 1 X OFF ON 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 IN: Logic “0” when 0.5V, Logic “1” when 1.4V with 2.7V to 3.6V supply. CTRL: Logic “0” when 0.5V or Floating, Logic “1” when 1.4V with 2.7V to 3.6V supply. FUNCTION Power Supply Digital Control Input Ground Connection Digital Control Input (Audio Enable) Ordering Information PART NUMBER (Note) PART MARKING TEMP. RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. # ISL54206IRUZ-T FN -40 to +85 10 Ld 2.1x1.6mm TQFN Tape and Reel L10.2.1x1.6A ISL54206IRZ-T 061Z -40 to +85 10 Ld 3mmx3mm TDFN Tape and Reel L10.3x3A ISL54206IRZ 061Z -40 to +85 10 Ld 3mmx3mm TDFN L10.3x3A NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate or NiPdAu termination finish, which are 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. 2 FN6409.0 December 18, 2006 ISL54206 Absolute Maximum Ratings Thermal Information VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 6.0V Input Voltages D+, D-, L, R (Note 2) . . . . . . . . . . . . . . . . . - 2V to ((VDD) + 0.3V) IN (Note 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2V to 5.5V CTRL (Note 2) . . . . . . . . . . . . . . . . . . . . . . -0.3 to ((VDD) + 0.3V) Output Voltages COM-, COM+ (Note 2) . . . . . . . . . . . . . . . . -2V to ((VDD) + 0.3V) 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 Rating: HBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >7kV MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >400V CDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>1.4kV Thermal Resistance (Typical, Note 3) JA (°C/W) 10 Ld TQFN Package . . . . . . . . . . . . . . . . . . . . . . . 130 10 Ld 3x3 TDFN Package. . . . . . . . . . . . . . . . . . . . . 110 Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C Maximum Storage Temperature Range . . . . . . . . . -65°C to +150°C Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTES: 2. Signals on D+, D-, L, R, COM-, COM+, CTRL, IN exceeding VDD or GND by specified amount are clamped. Limit current to maximum current ratings. 3. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: VDD = +3.3V, GND = 0V, VINH = 1.4V, VINL = 0.5V, VCTRLH = 1.4V, VCTRLL = 0.5V, (Notes 4, 6), unless otherwise specified. PARAMETER TEST CONDITIONS TEMP (°C) (NOTE 5) MIN TYP (NOTE 5) MAX UNITS ANALOG SWITCH CHARACTERISTICS Audio Switches (L, R) Analog Signal Range, VANALOG VDD = 3.0V, IN = 0.5V, CTRL = 1.4V Full -1.5 - ON Resistance, RON VDD = 3.0V, IN = 0.5V, CTRL = 1.4V, ICOMx = 100mA, VL or VR = -0.85V to 0.85V, (See Figure 3) 25 - Full - 25 RON Matching Between Channels, RON VDD = 3.0V, IN = 0.5V, CTRL = 1.4V, ICOMx = 100mA, VL or VR = Voltage at max RON over signal range of -0.85V to 0.85V, (Note 8) RON Flatness, RFLAT(ON) VDD = 3.0V, IN = 0.5V, CTRL = 1.4V, ICOMx = 100mA, VL or VR = -0.85V to 0.85V, (Note 7) 1.5 V 2.65 4 - 5.5 - 0.02 0.13 Full - - 0.16 25 - 0.03 0.05 Full - - 0.07 VDD = 3.6V, IN = 0V, CTRL = 3.6V, VCOM- or VCOM+ = -0.85V, 0.85V, VL or VR = -0.85V, 0.85V, VD+ and VD- = floating, Measure current through the discharge pull-down resistor and calculate resistance value. 25 - 50 - k Analog Signal Range, VANALOG VDD = 3.6V, IN = 1.4V, CTRL = 1.4V Full 0 - VDD V ON Resistance, RON VDD = 3.6V, IN = 1.4V, CTRL = 1.4V, ICOMx = 40mA, VD+ or VD- = 0V to 400mV (See Figure 4) 25 - 4.6 5 RON Matching Between Channels, RON VDD = 3.6V, IN = 1.4V, CTRL = 1.4V, ICOMx = 40mA, VD+ or VD- = Voltage at max RON, (Note 7) RON Flatness, RFLAT(ON) VDD = 3.6V, IN = 1.4V, CTRL = 1.4V, ICOMx = 40mA, VD+ or VD- = 0V to 400mV, (Note 7) Discharge Pull-Down Resistance, RL, RR USB Switches (D+, D-) OFF Leakage Current, ID+(OFF) or ID-(OFF) 3 VDD = 3.6V, IN = 0V, CTRL = 3.6V, VCOM- or VCOM+ = 0.5V, 0V, VD+ or VD- = 0V, 0.5V, VL and VR = float Full - - 6.5 25 - 0.06 0.5 Full - - 0.55 25 - 0.4 0.6 Full - - 1.0 25 -10 - 10 nA Full -70 - 70 nA FN6409.0 December 18, 2006 ISL54206 Electrical Specifications - 2.7V to 3.6V Supply Test Conditions: VDD = +3.3V, GND = 0V, VINH = 1.4V, VINL = 0.5V, VCTRLH = 1.4V, VCTRLL = 0.5V, (Notes 4, 6), unless otherwise specified. (Continued) PARAMETER TEST CONDITIONS ON Leakage Current, IDx TEMP (°C) (NOTE 5) MIN TYP (NOTE 5) MAX UNITS VDD = 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, VD+ or VD- = 2.0V, VCOM- ,VCOM+ , VL and VR = float 25 -10 2 10 nA Full -75 - 75 nA Turn-ON Time, tON VDD = 2.7V, RL = 50, CL = 10pF, (See Figure 1) 25 - 67 - ns Turn-OFF Time, tOFF VDD = 2.7V, RL = 50, CL = 10pF, (See Figure 1) 25 - 48 - ns Break-Before-Make Time Delay, tD VDD = 2.7V, RL = 50, CL = 10pF, (See Figure 2) 25 - 18 - ns Skew, tSKEW VDD = 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, RL = 45, CL = 10pF,tR = tF = 750ps at 480Mbps, (Duty Cycle = 50%) (See Figure 7) 25 - 50 - ps Total Jitter, tJ VDD = 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, RL = 45, CL = 10pF,tR = tF = 750ps at 480Mbps 25 - 210 - ps Propagation Delay, tPD VDD = 3.3V, IN = 3.3V, CTRL = 0V or 3.3V, RL = 45, CL = 10pF,See Figure 7) 25 - 250 - ps Crosstalk (Channel-to-Channel), R to COM-, L to COM+ VDD = 3.3V, IN = 0V, CTRL = 3.3V, RL = 32, f = 20Hz to 20kHz, VR or VL = 0.707VRMS (2VP-P), (See Figure 6) 25 - -110 - dB Total Harmonic Distortion f = 20Hz to 20kHz, VDD = 3.0V, IN = 0V, CTRL = 3.0V, VL or VR = 0.707VRMS (2VP-P), RL = 32 25 - 0.06 - % USB Switch -3dB Bandwidth Signal = 0dBm, 0.2VDC offset, RL = 50,CL = 5pF DYNAMIC CHARACTERISTICS 25 - 630 - MHz D+/D- OFF Capacitance, CD+(OFF), f = 1MHz, VDD = 3.3V, IN = 0V, CTRL = 3.3V, CD-(OFF) VD- or VD+ = VCOMx = 0V, (See Figure 5) 25 - 6 - pF L/R OFF Capacitance, CLOFF, CROFF 25 - 9 - pF 25 - 10 - pF Full 1.8 - 5.5 V 25 - 6 8 A f = 1MHz, VDD = 3.3V, IN = 0V, CTRL = 0V or 3.3V, VL or VR = VCOMx = 0V, (See Figure 5) COM ON Capacitance, CCOM-(ON), f = 1MHz, VDD = 3.3V, IN = 3.0V, CTRL = 0V or 3.3V, CCOM+(ON) VD- or VD+ = VCOMx = 0V, (See Figure 5) POWER SUPPLY CHARACTERISTICS Power Supply Range, VDD Positive Supply Current, IDD VDD = 3.6V, IN = 0V or 3.6V, CTRL = 3.6V Positive Supply Current, IDD (Low Power State) VDD = 3.6V, IN = 0V, CTRL = 0V or float Full - - 10 A 25 - 1 7 nA Full - - 140 nA DIGITAL INPUT CHARACTERISTICS Voltage Low, VINL , VCTRLL VDD = 2.7V to 3.6V Full - - 0.5 V 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 = 3.6V, CTRL = 0V Full -50 20 50 nA Input Current, ICTRLH VDD = 3.6V, IN = 0V, CTRL = 3.6V Full -2 1.1 2 A CTRL Pull-Down Resistor, RCTRL VDD = 3.6V, IN = 0V, CTRL = 3.6V Full - 4 - M NOTES: 4. VLOGIC = Input voltage to perform proper function. 5. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. 6. Parameters with limits are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation. 7. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range.. 8. 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-. 4 FN6409.0 December 18, 2006 ISL54206 Test Circuits and Waveforms VDD LOGIC INPUT 50% 0V VINPUT tOFF SWITCH INPUT VINPUT SWITCH INPUT CTRL VOUT Audio or USB COMx IN VOUT 90% 90% SWITCH OUTPUT C VDD tr <20ns tf <20ns VIN CL 10pF RL 50 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 VINPUT VDD LOGIC INPUT D- or D+ 0V SWITCH OUTPUT CL 10pF RL 50 IN GND VIN VOUT VOUT COMx L or R 90% 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 RON = V1/100mA C RON = V1/40mA CTRL CTRL L OR R D- OR D+ VD- OR D+ VL OR R IN V1 100mA OV 40mA COMx GND Repeat test for all switches. VDD IN V1 COMx GND Repeat test for all switches. FIGURE 3. AUDIO RON TEST CIRCUIT 5 FIGURE 4. USB RON TEST CIRCUIT FN6409.0 December 18, 2006 ISL54206 Test Circuits and Waveforms (Continued) VDD VDD C C CTRL CTRL AUDIO OR USB SIGNAL GENERATOR L OR R IN IMPEDANCE ANALYZER IN 0V 0V or VDD 32 COMx 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 5. CAPACITANCE TEST CIRCUIT FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT VDD tri C 90% DIN+ DIN- 10% 50% CTRL VDD tskew_i 90% 15.8 50% 10% tfi tro DIN+ OUT- 10% COM+ DIN- 15.8 OUT+ D+ 143 CL COM- 45 OUT- DCL 143 90% OUT+ IN 45 50% tskew_o 50% 90% tf0 10% GND |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 6 FN6409.0 December 18, 2006 ISL54206 Application Block Diagrams USB AND HEADPHONE JACK VDD VBUS CONTROLLER ISL54206 IN CTRL LOGIC CIRCUITRY 4M D- COM- D+ 50k COM+ USB HIGH-SPEED TRANSCEIVER L R CODEC 50k GND LOGIC CONTROL VIA MICRO-PROCESSOR VDD USB AND HEADPHONE JACK VBUS IN CONTROLLER ISL54206 CTRL LOGIC CIRCUITRY 22k 4M 4M D- COM- D+ 50k COM+ USB HIGH-SPEED TRANSCEIVER L R CODEC 50k GND LOGIC CONTROL VIA VBUS VOLTAGE FROM COMPUTER OR USB HUB Detailed Description The ISL54206 device is a dual single pole/double throw (SPDT) analog switch device that can operate from a single dc power supply in the range of 1.8V to 5.5V. 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 tiny µTQFN and TDFN packages for use in MP3 players, PDAs, cell phones, and other personal media players. The part consists of two 3 audio switches and two 5 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. 7 The ISL54206 was specifically designed for MP3 players, cell phones and other personal media player applications that need to combine the audio headphone jack and the USB data connector into a single shared connector, thereby saving space and component cost. Typical application block diagrams of this functionality is shown above. The ISL54206 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 cellphone. The ISL54206 also contains a logic control pin (CTRL) that when driven Low while IN is Low, opens all switches and puts the part into a low power state, drawing typically 1nA of IDD current. A detailed description of the two types of switches is provided in the sections following. The USB transmission FN6409.0 December 18, 2006 ISL54206 and audio playback are intended to be mutually exclusive operations. can operate with a supply voltage in the range of 1.8V to 5.5V. Audio Switches 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 3.3V in order to get a USB data signal level above 2.5V. The two audio switches (L, R) are 3 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. Crosstalk between the audio switches over the audio band is < -110dB. 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 32headphone speaker load. See Figures 8, Figures 9, Figures 10, and Figures 11 THD+N performance curves. These switches are uni-directional switches. The audio drivers should be connected at the L and R side of the switch (pin 7 and pin 8) and the speaker loads should be connected at the COM side of the switch (pin 3 and pin 4). The audio switches are active (turned ON) whenever the IN voltage is 0.5V and the CTRL voltage to 1.4V. Note: Whenever the audio switches are ON the USB transceivers need to be in the high impedance state or static high or low state. USB Switches The two USB switches (D+, D-) are 5 bidirectional switches that were designed to pass high-speed USB differential signals in the range of ±0V to 400mV. These switches have low capacitance and high bandwidth to pass USB high-speed signals (480Mbps) with minimum edge and phase distortion to meet USB 2.0 high-speed signal quality specifications. See Figure 12 for High-speed Eye Pattern taken with switch in the signal path. LOGIC CONTROL The state of the ISL54206 device is determined by the voltage at the IN pin (pin 2) and the CTRL pin (pin 10). Refer to truth-table on page 2 of data sheet. 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 processor. The CTRL pin is internally pulled low through a 4Mresistor to ground and can be left floating or tri-stated by the µprocessor. The CTRL control pin is only active when IN is logic “0”. The IN pin does not have an internal pull-down resistor and must not be allowed to float. It must be driven High or Low. The voltage at the IN pin can exceed the VDD voltage by as much as 2.55V. 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 2.7V to 3.6V. An external pull-down resistor is required from the IN pin to ground when directly driving the IN pin with the computer VBUS voltage. See the section titled “USING THE COMPUTER VBUS VOLTAGE TO DRIVE THE “IN’ PIN”. Logic control voltage levels: IN = Logic “0” (Low) when IN 0.5V IN = Logic “1” (High) when IN 1.4V CTRL = Logic “0” (Low) when 0.5V or floating. CTRL = Logic “1” (High) when 1.4V Audio Mode 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. 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) 3 audio switches are ON and the D- and D+ 5 USB switches are OFF (high impedance). The USB switches are active (turned ON) whenever the IN voltage is 1.4V. When nothing is plugged into the common connector or a headphone is plugged into the common connector, the processor will sense that there is no voltage at the VBUS pin of the connector and will drive and hold the IN control pin of the ISL54206 low. As long as the CTRL = Logic “1,” the ISL54206 part will be in the audio mode and the audio drivers of the media player can drive the headphones and play music. Note: Whenever the USB switches are ON the audio drivers of the CODEC need to be at AC or DC ground or floating to keep from interfering with the data transmission. ISL54206 Operation The discussion that follows will discuss using the ISL54206 in the typical application shown in the block diagrams on page 7. VDD SUPPLY The DC power supply connected at VDD (pin 1) provides the required bias voltage for proper switch operation. The part 8 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 switches are ON and the L and R 3 audio switches are OFF (high impedance). FN6409.0 December 18, 2006 ISL54206 When a USB cable from a computer or USB hub is connected at the common connector, the processor will sense the present of the 5V VBUS and drive the IN pin voltage high. The ISL54206 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 processor 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 Low Power Mode. Low Power Mode If the IN pin = Logic “0” and CTRL pin = Logic “0,” the part will be in the Low Power mode. In the Low Power mode, the audio switches and the USB switches are OFF (high impedance). In this state, the device draws typically 1nA of current. USING THE COMPUTER VBUS VOLTAGE TO DRIVE THE “IN” PIN External IN Pull-Down Resistor Rather than using a micro-processor to control the IN logic pin you can directly drive the IN pin using the VBUS voltage from the computer or USB hub. In order to do this you must connected an external resistor from the IN pin to ground. When a headphone or nothing is connected at the common connector the external pull-down will pull the IN pin low putting the ISL54206 in the Audio mode or Low Power 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 9 pull-down resistor and return to the Audio Mode or Low Power Mode depending on the condition of the CTRL pin. Note: The voltage at the IN pin can exceed the VDD voltage by as much as 2.55V. 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 2.7V to 3.6V. External IN Series Resistor The ISL54206 contains a clamp circuit between IN and VDD. Whenever the IN voltage is greater than the VDD voltage by more than 2.55V, current will flow through this clamp circuitry into the VDD power supply bus. During normal USB operation, VDD is in the range of 2.7V to 3.6V and IN (VBUS voltage from computer or USB hub) is in the range of 4.4V to 5.25V, the clamp circuit is not active and no current will flow through the clamp into the VDD supply. In a USB application, the situation can exist where the VBUS voltage from the computer could be applied at the IN pin before the VDD voltage is up to its normal operating voltage range and current will flow through the clamp into the VDD power supply bus. This current could be quite high when VDD is OFF or at 0V and could potentially damage other components connected in the circuit. In the application circuit, a 22k resistor has been put in series with the IN pin to limit the current to a safe level during this situation. It is recommended that a current limiting resistor in the range of 10k to 50k be connected in series with the IN pin. It will have minimal impact on the logic level at the IN pin during normal USB operation and protect the circuit during the time VBUS is present before VDD is up to its normal operating voltage. Note: No external resistor is required in applications where the voltage at the IN pin will not exceed VDD by more than 2.55V. FN6409.0 December 18, 2006 ISL54206 Typical Performance Curves TA = +25°C, Unless Otherwise Specified 0.4 0.11 0.1 THD+N (%) VDD = 2.6V 0.08 0.07 VDD = 2.7V 0.06 0.2 2.5VP-P 0.1 VDD = 3.6V VDD = 3V 0.05 2VP-P 1VP-P 0 0.04 20 200 2k FREQUENCY (Hz) 20 20k 200 2k FREQUENCY (Hz) 20k FIGURE 9. THD+N vs SIGNAL LEVELS vs FREQUENCY FIGURE 8. THD+N vs SUPPLY VOLTAGE vs FREQUENCY 0.5 0.5 RLOAD = 32 FREQ = 1kHz VDD = 3V 0.4 RLOAD = 32 FREQ = 1kHz VDD = 3V 0.4 0.3 THD+N (%) THD+N (%) 3VP-P 0.3 0.09 THD+N (%) RLOAD = 32 VDD = 3V RLOAD = 32 VLOAD = 0.707VRMS 0.2 0.3 0.2 0.1 0.1 0 0 0 0.5 1 1.5 2 2.5 3 OUTPUT VOLTAGE (VP-P) FIGURE 10. THD+N vs OUTPUT VOLTAGE 10 3.5 0 10 20 30 40 50 OUTPUT POWER (mW) FIGURE 11. THD+N vs OUTPUT POWER FN6409.0 December 18, 2006 ISL54206 (Continued) VOLTAGE (835mV/DIV) Typical Performance Curves TA = +25°C, Unless Otherwise Specified TIME (10ns/DIV) FIGURE 12. EYE PATTERN: 480Mbps WITH SWITCH IN THE SIGNAL PATH 1 Die Characteristics USB SWITCH 0 SUBSTRATE POTENTIAL (POWERED UP): NORMALIZED GAIN (dB) -1 GND (TDFN Paddle Connection: Tie to GND or Float) -2 TRANSISTOR COUNT: -3 98 -4 PROCESS: Submicron CMOS RL = 50 VIN = 0.2VP-P to 2VP-P 1M 10M 100M FREQUENCY (Hz) 1G FIGURE 13. FREQUENCY RESPONSE 11 FN6409.0 December 18, 2006 ISL54206 Ultra Thin Quad Flat No-Lead Plastic Package (UTQFN) D 6 INDEX AREA 2X A L10.2.1x1.6A B N 10 LEAD ULTRA THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE MILLIMETERS E SYMBOL 0.10 C 1 2X 2 0.10 C TOP VIEW C A SEATING PLANE 1 MAX 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 SIDE VIEW k 0.20 - - L 0.35 0.40 0.45 4xk 2 NX L N 0.50 BSC - NX b 2 Nd 4 3 Ne 1 3 0 - 12 NOTES: 5 BOTTOM VIEW CL NX (b) (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 e - N (DATUM B) N-1 NOTES 0.50 e (DATUM A) PIN #1 ID NOMINAL 0.45 A3 0.10 C 0.05 C MIN A 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 0.25 0.50 LAND PATTERN 10 12 FN6409.0 December 18, 2006 ISL54206 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 E B // A C SEATING PLANE D2 (DATUM B) 6 INDEX AREA 0.10 C 0.08 C A3 SIDE VIEW 7 8 MAX NOTES A 0.70 0.75 0.80 - A1 - - 0.05 - 0.20 REF b 0.20 0.25 1 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 N 10 2 Nd 5 3 Rev. 3 3/06 NOTES: 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. 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 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) NOMINAL D2/2 (DATUM A) 8 MIN A3 6 INDEX AREA TOP VIEW SYMBOL (A1) L1 5 9 L e SECTION "C-C" C C TERMINAL TIP FOR ODD TERMINAL/SIDE For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html 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 13 FN6409.0 December 18, 2006