ISL54400, ISL54401, ISL54402 ® Data Sheet July 12, 2006 Low Voltage, Dual SPDT, USB/Audio Switches with Negative Signal Capability FN6240.3 Features • Low Distortion Negative Signal Capability The Intersil ISL54400, ISL54401, ISL54402 dual SPDT (Single Pole/Double Throw) switches combine low distortion audio and accurate USB 2.0 full speed data signal switching in the same low voltage device. When operated with a 2.5V 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. The ISL54400 and ISL54401 incorporate circuitry for detection of the USB VBUS voltage, which is used to switch between the audio and USB signal source in the portable device. In addition, the ISL54400 includes circuitry for generation of a VTERM voltage of 3.3V for use with USB speed setting pull-up resistor. • Detection of VBUS Voltage on USB Cable (ISL54400 and ISL54401) • Generation of VTERM Voltage for USB D+/D- Pull-up Resistor (ISL54400) • Low Distortion Headphone Audio Signals - THD+N at 12mW into 32Ω Load . . . . . . . . . . . <0.007% • Cross-talk (20Hz to 20kHz) . . . . . . . . . . . . . . . . . . -110dB • 1.8V Logic Compatible (ISL54402) • Single Supply Operation (VDD) - ISL54400 and ISL54401 . . . . . . . . . . . . . . 2.5V to 3.6V - ISL54402 . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8V to 5.5V • Available in Ultra-thin µQFN and TDFN Packages The ISL54400, ISL54401, ISL54402 are available in 10 Ld 3mm x 3mm TDFN and 10 Ld tiny 2.1mm x 1.6mm ultra-thin µTQFN packages. They operate over a temperature range of -40 to +85°C. • Pb-Free Plus Anneal Available (RoHS Compliant) Applications • MP3 and other Personal Media Players Related Literature • Cellular/Mobile Phones • Application Note AN1255 “ISL5440XEVAL1Z Evaluation Board User’s Manual” • PDA’s • USB Switching • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs)” • Audio/USB Switching • Application Note AN557 “Recommended Test Procedures for Analog Switches” Application Block Diagram VDD VTERM ISL54400 USB/HEADPHONE JACK VBUS DD-/L D+ USB FULL-SPEED TRANSCEIVER L D+/R R CODEC 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. ISL54400, ISL54401, ISL54402 Pinouts (Note 1) ISL54400 (TDFN, µTQFN) TOP VIEW VTERM 10 VDD VBUS POWER/LOGIC CONTROL 1 10 VTERM 5.3kΩ 2 VDD 9 D- 8 D+ 7 L 2MΩ D-/L 3 D +/R 4 VBUS D-/L 5.3kΩ 1 POWER/LOGIC CONTROL 2 2MΩ 3 5 D- 8 D+ 7 L 50kΩ 50kΩ GND 9 R 6 50kΩ D+/R 6 4 R 50kΩ 5 GND ISL54401 (TDFN, µTQFN) TOP VIEW N.C, 10 VDD 1 VBUS 2 POWER/LOGIC CONTROL 10 N.C. VDD 9 D- 2MΩ VBUS D-/L 3 8 D+ D +/R 4 7 L 6 R D-/L 5 2 2MΩ 3 9 D- 8 D+ 7 L 50kΩ 50kΩ GND POWER/LOGIC CONTROL 1 D+/R 6 4 R 50kΩ 50kΩ 5 GND ISL54402 (TDFN, µTQFN) TOP VIEW IN1 10 VDD IN2 1 LOGIC CONTROL 10 IN1 2 9 NO1 COM1 3 8 NO2 COM2 4 7 NC1 VDD 1 IN2 2 COM1 3 LOGIC CONTROL 6 5 NO1 8 NO2 7 NC1 50kΩ 50kΩ GND 9 NC2 COM2 6 4 50kΩ NC2 50kΩ 5 GND NOTE: 1. ISL54400, ISL54401 Switches Shown for VBUS not present (or idle). ISL54402 Switches Shown for Logic “0” Inputs. 2 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Truth Table ISL54401 VBUS L, R D+, D- 0 ON OFF 1 OFF ON Logic “0” when ≤ VDD + 0.2V, Logic “1” when ≥ VDD + 0.8V Truth Table ISL54400 VDD VBUS L, R D+, D- VTERM 0 0 ON OFF Open 0 1 OFF ON Open 1 0 ON OFF Open 1 1 OFF ON 3.3V to 4.0V VDD: Logic “0” when < 2.4V, Logic “1” when ≥ 2.5V VBUS: Logic “0” when ≤ VDD + 0.2V, Logic “1” when ≥ VDD + 0.8V Truth Table ISL54402 IN NCx NOx 0 ON OFF 1 OFF ON Logic “0” ≤ 0.5V. Logic “1” ≥ 1.4V, with VDD between 2.7V and 3.6V Pin Descriptions ISL54400 ISL54401 ISL54402 NO. NAME FUNCTION NAME FUNCTION NAME 1 VDD Power Supply (Audio Switches) Control Input for VTERM VDD Power Supply (Audio Switches) VDD System Power Supply Input 2 VBUS Digital Control Input Power Supply (USB Switches) VBUS Digital Control Input Power Supply (USB Switches) IN2 Digital Control Input 3 D-/L Voice and Data Common Pin D-/L Voice and Data Common Pin COM1 Common Pin 4 D+/R Voice and Data Common Pin D+/R Voice and Data Common Pin COM2 Common Pin 5 GND Ground Connection GND Ground Connection GND Ground Connection 6 R Audio Right Input R Audio Right Input NC2 Normally Closed Pin 7 L Audio Left Input L Audio Left Input NC1 Normallly Closed Pin 8 D+ USB Differential Input D+ USB Differential Input NO2 Normally Open Pin 9 D- USB Differential Input D- USB Differential Input NO1 Normallly Open Pin 10 VTERM No Connect IN1 Digital Control Input USB VTERM Voltage, Outputs 3.3V to 4.0V when VBUS = 4.4V to 5.25V and VDD = logic “1” and connected to Upstream USB Termination. 3 N.C. FUNCTION FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Ordering Information PART NUMBER (Note) BRAND TEMP. RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. # ISL54400IRZ 400Z -40 to 85 10 Ld 3x3 Thin DFN L10.3x3A ISL54401IRZ 401Z -40 to 85 10 Ld 3x3 Thin DFN L10.3x3A ISL54402IRZ 402Z -40 to 85 10 Ld 3x3 Thin DFN L10.3x3A ISL54400IRZ-T 400Z -40 to 85 10 Ld 3x3 Thin DFN Tape and Reel L10.3x3A ISL54401IRZ-T 401Z -40 to 85 10 Ld 3x3 Thin DFN Tape and Reel L10.3x3A ISL54402IRZ-T 402Z -40 to 85 10 Ld 3x3 Thin DFN Tape and Reel L10.3x3A ISL54400IRUZ-T FA -40 to 85 10 Ld 2.1 x 1.6mm µTQFN Tape and Reel L10.2.1x1.6A ISL54401IRUZ-T FB -40 to 85 10 Ld 2.1 x 1.6mm µTQFN Tape and Reel L10.2.1x1.6A ISL54402IRUZ-T FC -40 to 85 10 Ld 2.1 x 1.6mm µTQFN Tape and Reel L10.2.1x1.6A ISL54400EVAL1Z - -40 to 85 ISL54400 Evaluation Kit - ISL54401EVAL1Z - -40 to 85 ISL54401 Evaluation Kit - ISL54402EVAL1Z - -40 to 85 ISL54402 Evaluation Kit - 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. 4 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Absolute Maximum Ratings Thermal Information VDD to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 6.0V VBUS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 6.0V Input Voltages NOx, NCx, L, R (Note 2). . . . . . . . . . . . . . . - 2V to ((VDD) + 0.3V) D+, D- (Note 2). . . . . . . . . . . . . . . . . . . . . -2V to ((VBUS) + 0.3V) INx (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to ((VDD) + 0.3V) Output Voltages (ISL54400 and ISL54401) D-/L, D+/R (Note 2) Audio Mode . . . . . . . . -2V to ((VDD) + 0.3V) D-/L, D+/R (Note 2) USB Mode . . . . . . . . -2V to ((VBUS) + 0.3V) Output Voltages (ISL54402) COMx (Note 2) . . . . . . . . . . . . . . . . . . . . . . -2V to ((VDD) + 0.3V) Continuous Current (L, R, NCx, or COMx) . . . . . . . . . . . . . ±300mA Peak Current (L, R, NCx, or COMx) (Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . ±500mA Continuous Current (D+, D-, NOx). . . . . . . . . . . . . . . . . . . . . ±40mA Peak Current (D+, D-, NOx) (Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . ±100mA ESD Rating: HBM COMx, D-/L, D+/R, VBUS . . . . . . . . . . . . . . . . . . . . . . .>4kV HBM All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>4kV MM COMx, D-/L, D+/R, VBUS . . . . . . . . . . . . . . . . . . . . . . .>500V MM All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>300V CDM (TDFN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>1kV Thermal Resistance (Typical, Note 3) θJA (°C/W) 10 Ld 3x3 TDFN Package . . . . . . . . . . . . . . . . . . . . 80 10 Ld µQFN Package . . . . . . . . . . . . . . . . . . . . . . . 96 Maximum Junction Temperature (Plastic Package). . . . . . . . 150°C Maximum Storage Temperature Range . . . . . . . . . . . . . -65°C to 150°C Operating Conditions Temperature Range ISL5440XIR and ISL5440XIRU . . . . . . . . . . . . . . . . . -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, D-/L, D+/R, VBUS, NOx, NCx, COMx, INx, exceeding VDD or GND by specified amount are clamped. Limit forward current through clamp to maximum current ratings. 3. θJA 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 5.5V Supply Test Conditions: VDD = +3.0V, GND = 0V, VBUSH = 3.8V, VBUSL = 3.2V, VINH = 1.4V, VINL = 0.5V (Notes 4, 6), Unless Otherwise Specified TEMP (°C) (NOTE 5) MIN TYP Analog Signal Range, VANALOG Full -1.5 - 1.5 V RON Matching Between Channels, VDD = 3.0V, VBUS = 3.2V or VIN = 0.5V, ICOM = 40mA, VL ∆RON or VR or VNCx = Voltage at max RON over signal range of -0.85V to 0.85V, (Note 9) 25 - 0.02 0.12 Ω Full - - 0.15 Ω RON Flatness, RFLAT(ON) 25 - 0.002 0.08 Ω Full - - 0.09 Ω 25 30 50 70 kΩ Full -1.5 - VBUS V 25 - 5 6 Ω Full - - 6.5 Ω 25 - 0.2 0.4 Ω Full - - 0.45 Ω PARAMETER TEST CONDITIONS (NOTE 5) MAX UNITS ANALOG SWITCH CHARACTERISTICS Audio Switches (L, R, NC1, NC2) VDD = 3.0V, VBUS = 3.2V or VIN = 0.5V, ICOM = 40mA, VL or VR or VNCx = -0.85V to 0.85V, (Note 7) VDD = 3.6V, VBUS = 0V or VIN = 0.5V, VD-/L or VD+/R or VCOM = -0.85V, 0.85V, VL or VR or VNCx = -0.85V, 0.85V, VD+ and VD- = floating, Measure current through the discharge pull-down resistor and calculate resistance value. Discharge Pull-down Resistance, RL, RR USB Switches (D+, D-, NO1, NO2) Analog Signal Range, VANALOG ON Resistance, RON , (ISL54400 and ISL54401 Only) VDD = 3.6V, VBUS = 4.4V, ICOM = 40mA, VD+ or VD- = 0V to VBUS, (See Figure 3) RON Matching Between Channels, VDD = 3.6V, VBUS = 4.4V, ICOM = 40mA, VD+ or ∆RON , (ISL54400 and ISL54401 VD- = Voltage at max RON, (Note 9) Only) 5 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Electrical Specifications - 2.7V to 5.5V Supply Test Conditions: VDD = +3.0V, GND = 0V, VBUSH = 3.8V, VBUSL = 3.2V, VINH = 1.4V, VINL = 0.5V (Notes 4, 6), Unless Otherwise Specified (Continued) TEMP (°C) (NOTE 5) MIN TYP 25 - 0.8 1.9 Ω Full - - 2.5 Ω 25 - 7.5 9 Ω Full - - 9.5 Ω 25 - 0.2 0.4 Ω Full - - 0.45 Ω 25 - 0.8 1.9 Ω Full - - 2.5 Ω 25 -5 1.5 5 µA Full -15 - 15 µA 25 -30 5 30 µA Full -35 - 35 µA 25 - 40 - ns Full - 60 - ns 25 - 20 - ns Full - 40 - ns Break-Before-Make Time Delay, tD VDD = 3.3V, VNO or VNC = 1.5V, RL = 300Ω, CL = 35pF, (See Figure 2) (ISL54402 Only) Full - 8 - ns Skew, tSKEW VDD = 3.0V, VBUS = 3.8V, RL = 39Ω, CL = 50pF, tR = tF = 12ns at 12Mbps, (Duty Cycle = 50%) (See Figure 7) 25 - 0.15 - ns Rise /Fall Time Mismatch, tM VDD = 3.0V, VBUS = 3.8V, RL = 39Ω, CL = 50pF, tR = tF = 12ns at 12Mbps, (Duty Cycle = 50%), (See Figure 6) 25 - 10 - % Total Jitter, tJ VDD = 3.0V, VBUS = 3.8V, RL = 39Ω, CL = 50pF, tR = tF = 12ns at 12Mbps 25 - 1.6 - ns Propagation Delay, tPD VDD = 3.0V, VBUS = 3.8V, RL = 39Ω, CL = 50pF, (See Figure 7) 25 - 0.9 - ns 25 - -110 - dB 25 - 0.007 - % Audio (NC) Switch -3dB Bandwidth Signal = 8dBm, RL = 50Ω, CL = 5pF 25 - 394 - MHz USB (NO) Switch -3dB Bandwidth Signal = 18dBm, 1VDC offset, RL = 50Ω, CL = 5pF 25 - 239 - MHz D+/D- OFF Capacitance, CD+OFF, f = 1MHz, VDD = 3.0V, VBUS = 3.2V or VIN = 0.5V, VNO CD-OFF, CNOxOFF or VNC = VCOM = 0V, (See Figure 5) 25 - 10 - pF L/R OFF Capacitance, CLOFF, CROFF, CNCxOFF f = 1MHz, VDD = 3.0V, VBUS = 3.8V or VIN = 1.4V, VNO or VNC = VCOM = 0V, (See Figure 5) 25 - 13 - pF COM ON Capacitance, CD-/L(ON), f = 1MHz, VDD = 3.0V, VBUS = 3.8V or VIN = 1.4V, VNO CD+/R(ON), CCOMx(ON) or VNC = VCOM = 0V, (See Figure 5) 25 - 46 - pF PARAMETER TEST CONDITIONS RON Flatness, RFLAT(ON), (ISL54400 and ISL54401 Only) VDD = 3.6V, VBUS = 4.4V, ICOM = 40mA, VD+ or VD- = 0V to VBUS, (Note 7) ON Resistance, RON (ISL54402 Only) VDD = 3.0V, VINx = 1.4V, ICOM = 40mA, VNOx = 0V to 3.0V, (See Figure 3) RON Matching Between Channels, VDD = 3.0V, VINx = 1.4V, ICOM = 40mA, VNOx = Voltage ∆RON (ISL54402 Only) at max RON, (Note 9) RON Flatness, RFLAT(ON) (ISL54402 Only) VDD = 3.0V, VIN = 1.4V, ICOM = 40mA, VNOx = 0V to 3.0V, (Note 7) OFF Leakage Current, ID+(OFF) or VDD = 3.6V, VBUS = 0V or VIN = 0.5V, VD-/L or VD+/R or ID-(OFF), INOx(OFF) VCOM = 0.5V, 0V, VD+ or VD- or VNOx = 0V, 0.5V, VL and VR = floating ON Leakage Current, ION VDD = 3.6V, VBUS = 5.25V or VIN = 1.4V, VD-/L or VD+/R or VCOM = 0.3V, 3.6V, VD+ or VD- or VNOx = 0.3V, 3.6V, VL and VR = floating (NOTE 5) MAX UNITS DYNAMIC CHARACTERISTICS Turn-ON Time, tON VDD = 2.7V, VNO or VNC = 1.5V, RL = 300Ω, CL = 35pF, (See Figure 1) (ISL54402 Only) Turn-OFF Time, tOFF VDD = 2.7V, VNO or VNC = 1.5V, RL = 300Ω, CL = 35pF, (See Figure 1) (ISL54402 Only) RL = 32Ω, f = 20Hz to 20kHz, VR or VL = 1.75VP-P, Crosstalk (Channel-to-Channel), R to D-/L, L to D+/R, NC2 to COM1, (See Figure 4) NC1 to COM2 f = 20Hz to 20kHz, VDD = 3.0V, VBUS = 3.2V or VIN = 0.5V, VL or VR or VNCx = 0.60VRMS, RL = 32Ω Total Harmonic Distortion 6 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Electrical Specifications - 2.7V to 5.5V Supply Test Conditions: VDD = +3.0V, GND = 0V, VBUSH = 3.8V, VBUSL = 3.2V, VINH = 1.4V, VINL = 0.5V (Notes 4, 6), Unless Otherwise Specified (Continued) TEMP (°C) (NOTE 5) MIN TYP Power Supply Range, VDD (ISL54400 and ISL54401 only) Full 2.5 - 3.6 V Power Supply Range, VDD (ISL54402 Only) Full 1.8 - 5.5 V 25 - 4.5 8 µA Full - - 10 µA 25 - 3.5 8 µA Full - - 25 µA 25 - 8 11 µA Full - - 15 µA 25 - 0.06 0.5 µA Full - - 1 µA 25 - 5.5 8 µA Full - - 10 µA PARAMETER TEST CONDITIONS (NOTE 5) MAX UNITS POWER SUPPLY CHARACTERISTICS Positive Supply Current, IDD Audio Mode (ISL54400 and ISL54401 only) VDD = 3.6V, VBUS = Float Positive Supply Current, IBUS USB Mode (ISL54400 and ISL54401 only) VDD = 3.6V, VBUS = 5.25V Positive Supply Current, IDD (ISL54402 Only) VDD = 5.5V, VIN = 0V Positive Supply Current, IDD (ISL54402 Only) VDD = 5.5V, VIN = 5.5V Positive Supply Current, IDD (ISL54402 Only) VDD = 5.5V, VIN = 2.85V VTERM Voltage, VVTERM (ISL54400 Only) VDD = 2.5V, VBUS = 4.4V, RTERM = 16.5kΩ to Ground 25 3.0V - 3.6V V VTERM Voltage, VVTERM (ISL54400 Only) VDD = 2.0V, VBUS = 4.4V 25 -1.4 - 0.5 V VBUS Voltage Low, VBUSL (ISL54400 and ISL54401 Only) Full - - VDD + 0.2 V VBUS Voltage High, VBUSH (ISL54400 and ISL54401 Only) Full VDD + 0.8 - - V DIGITAL INPUT CHARACTERISTICS Input Voltage Low, VINL (ISL54402 Only) VDD = 2.7V to 3.6V Full - - 0.5 V Input Voltage High, VINH (ISL54402 Only) VDD = 2.7V to 3.6V Full 1.4 - - V Input Voltage Low, VINL (ISL54402 Only) VDD = 5.0V Full - - 0.8 V Input Voltage High, VINH (ISL54402 Only) VDD = 5.0V Full 2.3 - - V Input Current, IINH, IINL (ISL54402 Only) VDD = 5.5V, VIN = 0V or VDD Full - 0.1 - µA NOTES: 4. VIN = 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. Parts 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. Guaranteed by design. 9. 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, between NC1 and NC2 or between D+ and D-, or between NO1 and NO2. 7 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Test Circuits and Waveforms VINH LOGIC INPUT 50% C VINL tOFF SWITCH INPUT VNO VOUT NO or NC SWITCH INPUT COM IN VOUT 90% 90% SWITCH OUTPUT VDD tr < 20ns tf < 20ns CONTROL INPUT 0V CL 35pF RL 300Ω GND 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 (NO or NC) -----------------------------R L + R ( ON ) FIGURE 1A. MEASUREMENT POINTS FIGURE 1B. TEST CIRCUIT FIGURE 1. SWITCHING TIMES (ISL54402 ONLY) VDD LOGIC INPUT VINH NO VNX VOUT COM NC VINL SWITCH OUTPUT VOUT C 90% 0V tD CL 35pF RL 300Ω IN GND LOGIC INPUT 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 (ISL54402 ONLY) VDD C VDD C SIGNAL GENERATOR RON = V1/40mA L or R or NC COM 32Ω Dx or L or R or Nx IN1 VNX 0V or VDD 40mA IN V1 VBUS or VIN COM ANALYZER COM GND Repeat test for all switches. Note: COM designation in diagram refers to: D-/L, D+/R, COM1, and COM2. FIGURE 3. RON TEST CIRCUIT 8 RL R or L or NC N.C. GND Signal direction through switch is reversed, worst case values are recorded. Repeat test for all switches. COM designation in diagram refers to: D-/L, D+/R, COM1, and COM2. FIGURE 4. AUDIO CROSSTALK TEST CIRCUIT FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Test Circuits and Waveforms (Continued) VDD C 1.3V< VCM < 2V Dx or L or R or Nx OUT + 90% VCM IN VBUS or VIN IMPEDANCE ANALYZER OUT - 90% 10% 10% tR tF COM GND tM = | tR -tF | min (tR or tF) Repeat test for all witches. COM designation in diagram refers to: D-/L, D+/R, COM1, and COM2. FIGURE 5. CAPACITANCE TEST CIRCUIT FIGURE 6. RISE/FALL TIME MISMATCH TEST tri VDD C 90% 10% DIN+ 50% tskew_i DIN- 90% DIN+ RS D+/R D+ CL 50% 10% DIN- RS D-/L CL 90% OUT+ OUT- 50% tskew_o 50% 90% OUT- D- tfi tro 10% OUT+ 10% tf0 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 9 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Application Block Diagram VDD VTERM ISL54400 USB/HEADPHONE JACK VBUS DD-/L D+ USB FULL-SPEED TRANSCEIVER L D+/R R CODEC GND Detailed Description Audio Switches The ISL5440X family of devices are dual single pole/double throw (SPDT) analog switches that operate from a single power supply. They were designed to function as dual 2 to 1 multiplexers to select between USB differential data signals and audio L and R stereo signals. They come in tiny µTQFN and TDFN packages for use in MP3 players, PDAs, cellphones, and other personal media players. The two NC (normally closed) audio switches (L, R, NCx) are 1Ω switches that can pass signals that swing below ground. Crosstalk between the audio switches is < -110dB and has a -3dB bandwidth of 394MHz. All devices in this family consist of two 1Ω normally closed (NC) audio switches and two 5Ω normally open (NO) 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 full-speed USB differential data signals with minimal edge and phase distortion. The ISL54400 and ISL54401 were specifically designed for MP3 players, personal media players and cellphone 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. A typical application block diagram of this functionality is shown above. The ISL54400 and ISL54401 incorporate circuitry for the detection of the USB VBUS voltage, which is used to switch between the audio CODEC drivers and USB transceiver of the MP3 player or cellphone. The ISL54400 contains additional circuitry to generate the required USB VTERM of 3.3V for use with the USB speed setting pull-up resistor. The ISL54402 is an audio/data switch and its functionality is typical of a standard dual SPDT device. A detailed description of the two types of switches and of each part type in the ISL5440x family are provided in the sections below. The USB transmission and audio playback are intended to be mutually exclusive operations. 10 The recommended maximum signal range is from -1.5V to 1.5V. You can apply positive signals greater than 1.5V but the RON resistance of the switch increases rapidly above 1.5V. The audio signal should not be allowed to exceed the VDD rail or swing more negative than -1.5V. Over a signal range of ±1V these switches have an extremely low RON flatness. They can pass ground referenced audio signals with very low distortion (<0.01% THD+N) when delivering 12mW into a 32Ω headphone speaker load. See Figures 8 and 9 THD+N performance curves. These switches are uni-directional switches. The audio sources should be connected at the NC side of the switch (pins 7 and 8) and the speaker loads should be connected at the COM side of the switch (pins 3 and 4). For the ISL54400 and ISL54401 parts the audio switches are active (turned ON) whenever the VBUS voltage is ≤ to VDD + 0.2V. The VBUS pin is internally pulled low through a pulldown resistor allowing the VBUS pin to float. When the VBUS pin is floating the audio switches are ON. Note: Whenever the audio switches are ON the USB transceivers connected at D- and D+ (pins 8 and 9) need to be in the high impedance state or static high or low state to keep from interfering with the audio transmission. For the ISL54402 part the NC1 audio switch is active (turned ON) whenever logic pin IN1 (pin 10) is LOW. The NC2 audio switch is active (turned ON) whenever the logic pin IN2 (pin 2) is LOW. Unlike the ISL54400 and ISL54401 parts FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 where the two SPDT switches work in tandem, the ISL54402 gives you independent control over each SPDT switch. USB Switches The two NO (normally open) USB switches (D+, D-, NOx) are 5Ω bidirectional switches that are designed to pass low speed and full-speed USB differential signals typically in the range of 0V to 3.6V. The switches have low capacitance and high bandwidth to pass USB full-speed signals (12Mbps) with minimum edge and phase distortion to meet USB 2.0 signal quality specifications. See eye diagram Figure 11 on page 13. For the ISL54400 and ISL54401 parts, the maximum signal range for the USB switches is from -1.5V to VBUS. The signal voltage should not be allowed to exceed the VBUS voltage rail or go below ground by more than -1.5V. For the ISL54402 part, the maximum signal range is from -1.5V to VDD. The signal voltage should not be allowed to exceed the VDD voltage rail or go below ground by more than -1.5V. When using the ISL54400 and ISL54401 parts, the USB switches are active (turned ON) whenever the VBUS voltage is ≥ to VDD + 0.8V. VBUS is internally pulled low, so when VBUS is floating the USB switches are OFF. Note: Whenever the USB switches are ON the audio drivers of the CODEC, connected at R and L (pins 6 and 7), need to be at AC or DC ground or floating to keep from interfering with the data transmission. When using the ISL54402 part, the NO1 USB switch is active (turned ON) whenever logic pin IN1 (pin 10) is HIGH. The NO2 USB switch is active (turned ON) whenever the logic pin IN2 (pin 2) is HIGH. Unlike the ISL54400 and ISL54401 parts where the two SPDT switches work in tandem, the ISL54402 gives you independent control over each SPDT switch. ISL54400 and ISL54401 Operation The ISL54400 and ISL54401 function the same except the ISL54401 does not have the VTERM feature. The discussion that follows pertains to both devices and will discuss using the parts in the typical application shown in the block diagram on page 10. LOGIC CONTROL The state of the ISL54400 and ISL54401 devices are determined by the voltage at the VBUS pin (pin 2). The VBUS pin is internally pulled low and can be left floating. If VBUS (pin 2) is floating or the VBUS voltage ≤ VDD + 0.2V the part will be in the Audio mode. In Audio mode the L (left) and R (right) 1Ω audio switches are ON and the D- and D+ 5Ω switches are OFF (high impedance). In this state, power to the part will be provided by the DC voltage connected at the VDD pin (pin 1). In a typical application VDD will be in the 11 range of 2.5V to 3.6V and will be connected to the battery or LDO of the MP3 player or cellphone. When a headphone is plugged into the common connector, nothing gets connected at the VBUS pin (it’s floating) and the ISL54400 and ISL54401 parts remain in the audio mode and the MP3 player or cellphone audio drivers can drive the headphones and play music. If VBUS (pin 2) voltage is greater than VDD by 0.8V the part will go into USB mode. In USB mode the D- and D+ 5Ω switches are ON and the L and R 1Ω audio switches are OFF (high impedance). In this state the part will be powered by the voltage connected at the VBUS pin (pin 2). When a USB cable from a computer or USB hub is connected at the common connector the VBUS voltage is driven to between 4.4V and 5.25V. The ISL54400 and ISL54401 parts will go into the USB mode. In USB mode the computer or USB hub transceiver and the MP3 player or cellphone USB transceiver are connected and digital data will be able to be transmitted back and forth. When the USB cable is disconnected the switch automatically turns the D+ and D- switches OFF and turns the L and R audio switches ON. POWER In audio mode the power supply connected at VDD (pin 1) provides power to the ISL54400 and ISL54401 parts. Its voltage should be kept in the range of 2.5V to 3.6V when used in a USB/Audio application to ensure you get proper switching when the VBUS voltage is at its lower limit of 4.4V. In USB mode power for the ISL54400 and ISL54401 parts is provided from the VBUS line from the host USB controller of the computer or USB hub. Its voltage will be between 4.4V and 5.25V. VTERM OPERATION (ISL54400 ONLY) When a USB cable from a computer is connected to a USB device a VTERM voltage must be applied to a speed indicating pull-up resistor to properly terminate the bus and identify whether the USB device is a full-speed or low-speed device to facilitate proper digital transmission. When the cable is removed from the device this VTERM voltage must be disconnected from the speed indicating pull-up resistor. The ISL54400 device can perform this operation. When VDD ≥ 2.5V and VBUS ≥ VDD + 0.8V, the VTERM pin (pin 10) outputs an open circuit voltage equal to the voltage at the VBUS pin. Otherwise the VTERM pin will be in a HI-Z state. The ISL54400 VTERM circuitry has an internal series resistor approximately equal to 5.3kΩ. For a full speed USB application, it is recommended you use a 3kΩ ±5% speed indicating pull-up resistor. When the USB bus is in the idle state, a 3kΩ ±5% resistor will put the D+ line voltage in the range of 2.7V to 3.6V as required by the USB specification. For low-speed USB application, it is recommended you use FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 a 2kΩ ±5% pull-up resistor at the D- line in order to meet the USB connect and disconnect timing requirements. ISL54402 Operation The ISL54402 is an audio/data switch. Its logic control is typical of a standard dual SPDT switch. The digital control for the ISL54402 are the IN pins (pin 2 and pin 10). These pins are 1.8V logic compatible when operated with a 3.0V supply. The device has been designed to have low IDD current even when the logic voltage is not at the rail. With VDD = 5.5V and VIN = 2.85V the ISL54402 draws only 8µA current. When logic pin IN1 (pin 10) is LOW the NC1 audio switch is ON and the NO1 USB data switch is OFF. When logic pin IN1 (pin 10) is HIGH the NC1 audio switch is OFF and the NO1 USB data switch is ON. When logic pin IN2 (pin 2) is LOW the NC2 audio switch is ON and the NO2 USB data switch is OFF. When logic pin IN2 (pin 2) is HIGH the NC2 audio switch is OFF and the NO2 USB data switch is ON. Power for the ISL54402 device is always provided by the DC voltage source connected at the VDD pin (pin 1). The VDD power supply voltage range is from 1.8V to 5.5V. Typical Performance Curves TA = 25°C, Unless Otherwise Specified 0.015 10 RLOAD = 32Ω VLOAD = 0.6VRMS RL = 32Ω FREQ = 1kHz 1 THD+N (%) THD+N (%) 0.01 VDD = 2.5V 0.1 0.005 VDD = 3V 0.01 0 20 0.001 200 2k FREQUENCY (Hz) 0 20k 10 20 30 40 50 60 70 OUTPUT POWER (mW) FIGURE 8. THD+N vs FREQUENCY FIGURE 9. THD+N vs POWER Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): NORMALIZED GAIN (dB) GND (TDFN Paddle Connection: Tie to GND or Float) TRANSISTOR COUNT: 1 98 GAIN 0 PROCESS: AUDIO -1 Submicron CMOS USB -2 -3 -4 RL = 50Ω VIN = 0.2VP-P to 2VP-P 1M 10M 100M FREQUENCY (Hz) 1G FIGURE 10. FREQUENCY RESPONSE 12 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 Typical Performance Curves TA = 25°C, Unless Otherwise Specified (Continued) VOLTAGE (835mV/DIV) MASK: FS (12Mbps) TIME (10ns/DIV) FIGURE 11. EYE PATTERN: 12Mbps 13 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 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 FN6240.3 July 12, 2006 ISL54400, ISL54401, ISL54402 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 FN6240.3 July 12, 2006