HS221P10NDGI

DATASHEET HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING IDTHS221P10 Description The IDTHS221P10 is a high-performance hybrid switch device, combined with hybrid low distortion audio and USB 2.0 high speed data (480 Mbps) signal switches, and analog switches. When operated with a 1.8 V single supply, this high performance 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. The IDTHS221P10 logic SEL control pin is 1.8 V compatible which allows for control via a standard µcontroller. With a VDD voltage in the range of 1.7 V to 1.95 V, the device can pass USB 3 V signal sources in the portable device, with up to 5.5 V tolerant on USB and COM signal pins. The part has an audio enable control pin to open all the switches and put the part in a low power state. The IDTHS221P10 is available in a small 10-pin µMLP package. Features • +1.7 V to +1.95 V single-supply operation (VDDx) • Low distortion negative signal handling capability with Ron less than 2 ohm for Audio signal • • • • • Control pin to open all switches and enter low power state Cross-talk audio channels (20 Hz to 20 kHz): -110dB -3dB bandwidth USB switches: 700 MHz Available in µMLP packages – RoHS compliant Compliant with USB 2.0 short circuit requirements without additional external components • Power off protection on common D+/R, D-/L ports Applications • • • • MP3 and other personal media players PDA’s Audio/USB Switching Cellular and mobile phones Block Diagram SEL Control Circuit D+ COM+ R DCOML RCOMRCOM+ VDDD VDDA GND IDT™ HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING 1 IDTHS221P10 REV F 112108 IDTHS221P10 HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING HYBRID SWITCH Pin Assignment (10-pin µMLP) COM+ SEL VDDD D+ DR COM- VDDA GND L Truth Table (COM+, COM-) SEL 0 1 COM+ R D+ COML D- Pin Descriptions Pin Number Pin Name 1 2 3 4 5 6 7 8 9 10 DR L GND VDDA COMCOM+ SEL VDDD D+ Pin Description 3 V USB Signal. Bi-directional. Audio signal pin (right). Uni-directional. ±1.5 V signal. Audio signal pin (left). Uni-directional. ±1.5 V signal. Ground pin. 0V reference. Power pin for Audio R/L signal. +1.8 V VDD. Audio and USB signal common pin. Bi-direction in USB mode, uni-directional in Audio mode. Audio and USB signal common pin. Bi-direction in USB mode, uni-directional in Audio mode Control signal pin. Internal pull-down resistor. Power pin for USB. +1.8 V VDD. 3 V USB Signal. Bi-directional. IDT™ HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING 2 IDTHS221P10 REV F 112108 IDTHS221P10 HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING HYBRID SWITCH Detailed Description The IDTHS221P10 device is a dual single pole/double throw (SPDT) high performance switch device that can operate from a single DC power supply in the range of 1.7 V to 1.95 V. 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 µMLP packages for use in cell phones, MP3 players, PDAs, and other personal media players. The part consists of one hybrid dual 2Ω audio and 5Ω USB switches. The hybrid switch can accept audio signals that swing below ground and USB signals. They were designed to pass audio left and right stereo signals, and 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 IDTHS221P10 was specifically designed for 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. The IDTHS221P10 has a SEL pin that select between the audio switches and the USB switches. This pin can be driven LOW or HIGH to switch between the audio inputs and USB data inputs. switches that were designed to pass high-speed USB differential signals in the range of ±0V to 400 mV. These switches have low capacitance and high bandwidth to pass USB high-speed signals (480 Mbps) with minimum edge and phase distortion to meet USB 2.0 high-speed signal quality specifications. The maximum signal range for the USB switches is from 0V to 3.6 V. The signal voltage at D- and D+ should not be allow to exceed the 3.6 voltage rail or go below ground. The USB switches are active (turned ON) whenever the SEL voltage is >1.2 V. 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. Logic Control The state of the IDTHS221P10 device is determined by the voltage at the SEL pin. Refer to truth table on page 2 of data sheet. These logic pins are 1.8 V logic compatible, and can be controlled by a standard µprocessor. The SEL pin is internally pulled low through a 4MΩ resistor to ground and can be left floating or tri-stated by the µprocessor. Logic control voltage levels: SEL = Logic “0” (Low) when 1.2 V Audio Switches The two audio switches (L, R) are 2Ω¸ switches that can pass signals that swing below ground by as much as 1.5 V. 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 typically < -110dB. These audio switches are uni-directional switches. The audio drivers should be connected at the L and R side of the switch and the speaker loads should be connected at the COM side of the switch. The audio switches are active (turned ON) whenever the SEL voltage to 8 kV >400 V >1 kV Rating -0.3 V to 6.0 V -40°C to +85°C ±150 mA ±300 mA ±40 mA ±100 mA -0.3 V to +6 V -2 V to +2 V -0.3 V to [(VDD) + 0.3 V] Note: These specifications are for absolute maximum rating. Not recommended for typical operation. Recommended Operating Conditions 1 Symbol VCC VIN Supply Voltage DC Switch Voltage DC Input Diode Current Storage Temperature Parameter 0V to VDD 0V to VDD Rating 1.7 V to 1.95 V -40°C to +85°C Note 1: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. DC switch voltage may never exceed 1.95 V. IDT™ HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING 4 IDTHS221P10 REV F 112108 IDTHS221P10 HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING HYBRID SWITCH Electrical Characteristics – 1.7 V to 1.95 V Supply Unless stated otherwise, VDD =1.7 V to 1.95 V, GND = 0V Parameter Symbol Conditions Min. Typ. Max. Units Audio Switches (L, R) Audio Signal Range On-Resistance RON Matching Between Channels RON Flatness Discharge Pull-down Resistance VANALOG RON RON -1.5 2 0.2 1.5 V Ω Ω RFLAT(ON) RCOM+, RCOMVANALOG RON RON RFLAT(ON) ID+(OFF) or ID-(OFF) IDx POP discharge pull-down resistor 1.5 10 Ω kΩ USB Switches (D+, D-) USB Signal Range On-Resistance RON Matching Between Channels RON Flatness OFF-leakage Current ON-leakage Current 0 5 0.1 1.5 ±50 ±50 3.6 V Ω Ω Ω nA nA IDT™ HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING 5 IDTHS221P10 REV F 112108 IDTHS221P10 HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING HYBRID SWITCH Parameter Symbol Conditions Min. (note 2) Typ. Max. (note 2) Units Dynamic Characteristics Turn-on Time Turn-off Time Break-Before-Make Delay Skew Additive Jitter Propagation Delay Crosstalk (Channel-to-channel) Total Harmonic Distortion USB Switch -3 dB Bandwidth D+/D- OFF Capacitance L/R OFF Capacitance COM ON Capacitance CD+(OFF), CD-(OFF) CLOFF, CROFF CCOM-(ON), CCOM+(ON) VDD IDD VIL VIH RSEL SEL pin SEL pin SEL pin 1.2 4 tON tOFF tD tSKEW tJ tPD R to COM-, L to COM+ THD RL = 45Ω CL = 10 pF, tR=tF=750 ps at 480 , Mbps, (Duty cycle=50%) RL=45Ω CL=10 pF, tR=tF=750 ps at 480 Mbps , RL=45Ω CL=10 pF (Fig.7) , , RL=32Ω f = 20Hz to 20 kHz, VLor VR=0.707 VRMS (2VP-P) f = 20Hz to 20 kHz, VLor VR=0.707 VRMS (2VP-P), RL= 32Ω , RL=50Ω CL=5 pF f=1 MHz, VLor VR=VCOMx=0V f=1 MHz, VD+or VD-=VCOMx=0V f=1 MHz, VDD=3.3 V, VD-or VD+=VCOMx=0V 20 5 25 50 100 250 -110 0.06 700 6 9 10 µs µs µs ps ps ps dB % MHz pF pF pF Power Supply Power Supply Range Positive Supply Current Voltage Low Voltage High Internal Pull-down Resistor 1.7 5 1.95 10 0.5 V µA V V MΩ IDT™ HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING 6 IDTHS221P10 REV F 112108 IDTHS221P10 HYBRID SWITCH WITH NEGATIVE SIGNAL HANDLING HYBRID SWITCH Test Circuits and Waveforms VDD C Logic Input Switch Input Switch Output VDD 50% 0V VINPUT 90% 0V tON VOUT tOFF tr