A4730 AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 1 - DESCRIPTION FEATURES The A4730 is a Low-Power, Two-Port, High-Speed, USB2.0 (480Mbps) double –pole double -throw (DPDT) Analog Switch featuring an On -Resistance of 4.5 Ω at V CC=3V and a Low On Capacitance 3.7pF Typical. The A4730 is compatible with the r equirements of USB2.0 and the wide bandwidth needed to pass the third harmonic, resulting in signals with minimum edge and phase distortion. Superior channel-to channel crosstalk also minimizes interference. Break -before-make function for both parts elimin ates signal disruption during switching from preventing both switches being enabled simultaneously. The A4730 contains special circuitry on the switch I/O pins for applications where the V CC supply is powered-off (V CC=0), which allows the device to withstand an over -voltage condition. This device is designed to minimize current consumption even when the control voltage applied to the Sel pin is lower than the supply voltage (V CC). This feature is especially valuable to ultra -portable applications, such as cell phones, allowing for direct interface with the general purpose I/Os of the baseband processor. Other applications include switching and connector sharing in portable cell phones, PDAs, digital cameras, printers, and notebook computers. The A4730 is available in TQFN10 (1.8x1.4) and MSOP10 packages. Wide Power Supply Range: 2.3V to 5V Low On Capacitance 3.7pF Typical Low On Resistance 4.5Ω (typ.) at 3V VDD when VSW=0.4V High Bandwidth (-3db): >720MHz without CL and >550MHz with CL=5pF Low Power Consumption: 1uA Maximum ESD: pass 8kV HBM test Over voltage tolerance (OVT) on all USB ports up to 5.25V without external components TTL/CMOS Compatible Break-Before-Make Switching Operation Temperature Range: -40℃ to 85℃ Available in TQFN10 (1.8x1.4) and MSOP10 Packages APPLICATION Cell phone, PDAs, Digital camera, Notebook, LCD Monitor, TV, SET-TOP BOX
ORDERING INFORMATION
V: Halogen free Package R: Tape & Reel SPQ: 3000pcs / Reel AiT provides all RoHS products Suffix “ V “ means Halogen free Package
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 2 - PIN DESCRIPTION Top View Top View Pin # Symbol Type Function TQFN10 MSOP10 1 2 Dp1 Input / Output Data Port 2 3 Dp2 Input / Output Data Port 3 4 Dp Input / Output USB Data BUS 4 5 GND Ground Ground 5 6 Dn Input / Output USB Data BUS 6 7 Dn2 Input / Output Data Port 7 8 Dn1 Input / Output Data Port 8 9 OEb Input Switch enable 9 10 VCC PWR Power Supply 10 1 Sel Input Switch select FUNCTION TABLE OEb Sel Function
1 X Disconnect
0 0 Dp , Dn=Dp1, Dn1 0 1 Dp , Dn=Dp2, Dn2
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 3 - ABSOLUTE MAXIMUM RATINGS VCC, DC Supply Voltage -0.5V~5.5V Dpn / Dnn / Dp / Dn, DC Switch Voltage -0.5V~VCC+0.3V VOeb / VSel, DC Input Voltage -0.5V~VCC I(Dpn/Dnn/Dp/Dn), Continuous Current -50mA~+50mA IPEAK(Dpn/Dnn/Dp/Dn), Peak Current NOTE1 -100mA ~+100mA TA, Operating Temperature Range -40℃~85℃ Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. NOTE1: Pulsed at 1ms, 50% duty circle
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 4 - DC ELECTRICAL CHARACTERISTICS Typical characteristics are at +25°C Parameter Symbol Conditions Min. Typ. Max. Unit Analog Switch Analog Signal Range VPn/VNn/Vp/Vn 0 VCC V On-ResistanceNOET2 RON VCC = 3V,VSW=0.4V, ION=-8mA 4.5 Ω On-Resistance Match Between ChannelsNOTE3 ΔRON VCC = 3V,VSW=0.4V, ION=-8mA 0.1 Ω Current Source Off Leakage Current IPn / Nn (OFF) VCC=3.6V,Vp/Vn= 3.6/0.3V, VPn/VNn=0.3/3.6V -1 1 uA Channel on Leakage Current IPn / Nn (ON) VCC=3.6V,Vp/Vn= 3.6/0.3V, VPn/VNn=3.6/0.3V -1 1 uA POWER OFF leakage current IOFF VCC = 0V,VSW=0V to 3.6V, Vcontrol=0 or VCC -1 1 uA Quiescent supply current ICC VCC=3V, Vcontrol=0 or VCC, IOUT=0 1 uA Increase in ICC current per control voltage and VCC ICCT VCC=3.6V, Vcontrol=2.6V 4 uA Input Leakage Current IOEb /Sel VOEb / Sel = 0 or VCC 1 uA Digital I/O Input Voltage High VIH VCC = 3.0 to 3.6V 1.6 V Input Voltage Low VIL VCC = 3.0 to 3.6V 0.5 V NOTE2: Measured by the voltage drop between Dpn/Dnn and Dp/Dn pins at the indicated current through the switch. On resistance is determined by the lower of the voltage on the two (Dpn/Dnn and Dp/Dn ports). NOTE3: ΔRON= RON(MAX) – RON(MIN), between Dp and Dn .
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 5 - DYNAMIC CHARACTERISTICS Typical characteristics are at 25°C Parameter Symbol Conditions Min. Typ. Max. Unit DRIVER CHARACTERISTICS Turn-On Time tON VCC=3.3V, RL=50Ω, CL=5pF, VSW=0.8V 10 30 ns Turn-Off Time tOFF VCC=3.3V, RL=50Ω, CL=5pF,VSW=0.8V 20 25 ns Break-Before-Make Time tBBM VCC=3.3V, RL=50Ω, CL=5pF,VSW1,2=0.8V 2.0 3 6.5 ns Propagation Delay tPD VCC=3.3V, RL=50Ω, CL=5pF 0.2 ns CAPACITANCE Control Capacitance CIN VCC=0V 1.5 pF ON Capacitance CON VCC=3.3V,OE=0V, f=240MHz 3.7 pF OFF Capacitance COFF VCC=3.3V,OE=3.3V, f=240MHz 2.0 pF APPLICATION CHARACTERISTICS 3dB Bandwidth f3dB VCC=3.3V,RL=50Ω,CL=0pF 720 MHz VCC=3.3V,RL=50Ω,CL=5pF 550 MHz Off IsolationNOTE4 VIso VCC=3.3V,RL=50Ω,f=250MHz -30 dB Channel crosstalk XTALK VCC=3.3V,RL=50Ω,f=250MHz -35 dB NOTE3: Off Channel Isolation = 20log10 [(VP1\\P2)/VP] or 20log10 [(VN1\\N2)/VN]
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 6 - TEST CIRCUIT 1. Test Circuit for On Resister 2. Test Circuit for Bandwidth 3. Test Circuit for Off Isolation
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 7 - 4. Test Circuit for Crosstalk 5. Test Circuit for Switch Times
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 8 - 6. Test Circuit for Break-Before-Make Time Delay, tBBM 7. Test Circuit for Propagation Delay, TPD
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 9 - BLOCK DIAGRAM
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 10 - DETAILED INFORMATION APPLICATION NOTE Meeting USB 2.0 VBUS Short Requirements Power-Off Protection For a VBUS short circuit the switch is expected to withstand such a condition for at least 24 hours. The A4730 has the specially designed circuit which prevents unintended signal bleed through as well as guaranteed system reliability during a power -down, over -voltage condition. The protection has been added to the common pins (Dp, Dn). Power-On Protection The USB 2.0 specification also notes that the USB device should be capable of withstanding a V BUS short during transmission of data. This modification works by limiting current flow back into the V CC rail during the over-voltage event so current remains within the safe operating range.
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 11 -
PACKAGE INFORMATION
Dimension in TQFN10 (Unit: mm)
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 12 - Dimension in MSOP10 (1.8x1.4) (Unit: mm) Symbol Min Max A - 1.100 A1 0.050 0.150 A2 0.750 0.950 A3 0.300 0.400 b 0.190 0.280 b1 0.180 0.230 c 0.150 0.200 c1 0.140 0.160 D 2.900 3.100 E 4.700 5.100 E1 2.900 3.100 e 0.500(BSC) L 0.400 0.700 L1 0.950(BSC) θ 0° 8°
AiT Semiconductor Inc. www.ait-ic.com A4730 DPDT ANALOG SWITCH LOW-POWER, TWO-PORT, HIGH-SPEED, USB2.0 (480Mbps) REV1.0 - APR 2014 RELEASED - - 13 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. AiT Semiconductor Inc. 's integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT products in such applications is understood to be fully at the risk of the customer. As used herein may involve potential risks of death, personal injury, or servere property, or e nvironmental damage. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. AiT Semiconductor Inc . assumes to no liability to customer product design or application sup port. AiT warrants the performance of its products of the specifications applicable at the time of sale.