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Hi-Speed USB And Audio Switches With Negative Signal Capability And High-Voltage-Tolerable VBUS Detection

Manufacturer :
Maxim Integrated
Product Categories :
Analog & Mixed-Signal Processing , Switches & Multiplexers , Analog Switches
MAX14585 PDF
RoHs Status:
Lead free / RoHS Compliant

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MAX14585 Product Details

Hi-Speed USB And Audio Switches With Negative Signal Capability And High-Voltage-Tolerable VBUS Detection The MAX14585/MAX14585A high-ESD-protected double-pole/double-throw (DPDT) switches multiplex Hi-Speed (480Mbps) USB and analog signals such as AC-coupled audio or video. These devices combine the low on-capacitance (CON) and low on-resistance (RON) necessary for high-performance switching applications in portable electronics and include an internal negative supply to pass audio signals that swing below ground down to -1.8V. The devices also handle USB low-/full-speed signaling and operate from a 2.7V to 5.5V supply.

MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection

The MAX14585/MAX14585A high-ESD-protected doublepole/double-throw (DPDT) switches multiplex Hi-Speed (480Mbps) USB and analog signals such as AC-coupled audio or video. These devices combine the low oncapacitance (CON) and low on-resistance (RON) necessary for high-performance switching applications in portable electronics and include an internal negative supply to pass audio signals that swing below ground down to -1.8V. The devices also handle USB low-/full-speed signaling and operate from to 5.5V supply. The devices feature a VBUS detection input (VB) that can handle voltage 28V to automatically switch to the USB signal path upon detection of a valid VBUS signal (VB > VVBDET). In a dead battery situation, the voltage on VB can supply power to the part VB is greater than 4.5V. The MAX14585 features internal shunt resistors on the audio path to reduce clicks and pops heard at the output. The MAX14585/MAX14585A are available in a spacesaving, x 1.8mm UTQFN package and operate over the to +85NC temperature range.

S Low Power Consumption Low Supply Current 7�A (typ) Single to 5.5V Supply Operation, VCC S Flexible Design Dual Power-Supply Architecture, VB and VCC ANO_ Channel Override Control Input S High Level of Integration for Performance 28V-Capable VB Input with Automatic UNC_ Selection by VBUS Detection Low-Capacitance Hi-Speed USB for Both Channels (UNC_ and ANO_) Distortion-Free Negative Signal Throughput Down -1.8V on ANO_ Channel 3I (typ) On-Resistance 960MHz Bandwidth 0.04% THD+N Audio Channel �15kV Human Body Model (HBM) ESD COM2 S Saves Board Space Internal Shunt Resistor Reduces Clicks and Pops x 1.8mm UTQFN Package

For related parts and recommended products to use with this part, refer to

Cell Phones PDAs and Handheld Devices Tablet PCs

For pricing, delivery, and ordering information, please contact Maxim Direct 1-888-629-4642, or visit Maxim's website at

(Voltages referenced to GND.) VCC, to +30V UNC_, ANO_, COM_ (VCC -1.9V to min(VCC 0.3V, 3.7V) UNC_, COM_ (VB R 4.5V, VCC to +3.7V UNC_, ANO_, COM_ (VCC -0.3V to min(VCC 0.3V, 3.7V) UNC_, ANO_, COM_ (VCC to +6V Continuous Current into Any Pin.................................... Q100mA Continuous Power Dissipation (TA = +70NC) UTQFN (derate 7mW/NC above +70NC).......................559mW Operating Temperature Range........................... to +85NC Junction Temperature Range........................... to +150NC Storage Temperature Range............................ to +150NC Lead Temperature (soldering, 10s).................................+300NC Soldering Temperature (reflow).......................................+260NC

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

UTQFN Junction-to-Ambient Thermal Resistance (BJA)......143.2NC/W Junction-to-Case Thermal Resistance (BJC).............20.1NC/W Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to

(TA to +85NC, unless otherwise noted. Typical values are at VCC = +25NC.) (Note 2) PARAMETER POWER SUPPLY Power-Supply Range Supply Current Power-Supply Rejection Ratio VB Detect Threshold VB Detect Hysteresis VB Detect Leakage Current ANALOG SWITCH VUNC_ Analog-Signal Range VANO_, VCOM_ RON(NO) VCC R 2.7V for UNC_ VCC R 2.7V for ANO_, COM_ VCC = 3V, VANO_= -1.5V, +1.5V ICOM_ = 10mA VCC = 3V, VUNC_= 0V to VCC, ICOM_ = 4.5V, VCC to 5.5V, VUNC_ to 2.5V, VAOR = 0V, ICOM_ = 10mA VCC = 3V, VANO_ = 0V, ICOM_ = 10mA (Note min(3.6V, VCC) min(3.6V, VCC) VCC ISUPPLY PSRR VVBDET VVBDET_H VCC 0V < VAOR < 0.4V, VAOR = 10kHz, VCC Q 0.3V, RCOM_= 50I VBUS rising, VCC R 2.7V VBUS falling, VCC V FA SYMBOL CONDITIONS MIN TYP MAX UNITS

(TA to +85NC, unless otherwise noted. Typical values are at VCC = +25NC.) (Note 2) PARAMETER UNC_ On-Resistance Match Between Channels ANO_ On-Resistance Flatness UNC_ On-Resistance Flatness Shunt Switch Resistance AOR Pulldown Resistor UNC_ Off-Leakage Current ANO_ Off-Leakage Current COM_ Off-Leakage Current SYMBOL DRON(NC) RFLAT(NO) RFLAT(NC) RSH RAOR IUNC_(OFF) IANO_(OFF) ICOM_(OFF) Switch open, VUNC_ 2.5V, 0V VCOM_ -1.5V, 2.5V, VCC 3V MAX14585A, switch open, VANO_ 2.5V, 0V, VCOM_ 0V, 2.5V, VCC = 3V VCC = 0V, VCOM_ = 3.6V, VUNC_ = VANO_ = unconnected USB mode COM_ On-Leakage Current ICOM_(ON) Audio mode VCC = 3V, VANO_ 0V, 2.5V, unconnected, VCOM_ 0V, 2.5V VCC = 3V, VUNC_ 0V, 2.5V, unconnected, VCOM_ -1.5V, 2.5V VCC = 3V, VANO_ = 50I; VAOR = 5V, VAOR 0V to VCC = 3V, VUNC_ = 50I; VAOR to 5V VCC = 3V, VANO_ = 50I; VAOR to 5V VCC = 3V, VUNC_ = 50I; VAOR = 5V, VAOR 0V to VCC CONDITIONS VCC = 3V, VUNC_ = 0V, ICOM_= 10mA (Note 3) VCC = 3V, ICOM_ = 10mA, VANO_ to +1.5V (Note 4) VCC = 3V, ICOM_ = 10mA, VUNC_= 0V to VCC (Note 4) IANO_ = 2mA, VCC R 2.7V MIN TYP MAX UNITS nA FA

ANO_ to COM_, Figure 1 Turn-On Time tON UNC_ to COM_, Figure 1 ANO_ from COM_, Figure 1 Turn-Off Time tOFF UNC_ from COM_, Figure 1

Break-Before-Make Time Delay Output Skew (Same Switch) Output Skew Between Switches ANO_ Off-Capacitance UNC_ Off-Capacitance

= 50I, time delay between one side of the switch open and the other side closed Figure 2 Figure 2 VANO_ 0.5VP-P, DC bias = 1MHz VUNC_ 0.5VP-P, DC bias = 1MHz


  • Single-Supply Operation (+2.7V to +5.25V)
  • Two Single-Ended Channels (MAX144) One Pseudo-Differential Channel (MAX145)
  • Low Power
    • 0.9mA (108ksps, +3V Supply)
    • 100μA (10ksps, +3V Supply)
    • 10μA (1ksps, +3V Supply)
    • 0.2μA (Power-Down Mode)
  • Internal Track/Hold
  • 108ksps Sampling Rate
  • SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface
  • Space-Saving 8-Pin μMAX Package
  • Pin-Compatible 10-Bit Versions Available


  • Battery-Powered Applications
  • Instrumentation
  • Isolated Data Acquisition
  • Medical Instruments
  • Portable Data Logging
  • Process Control Monitoring
  • System Supervision
  • Test Equipment

MAX14585 Block Diagram
(Picture: Diagram)

Technical Parameters

Tags - DNL (\u00b1LSB) 0.75
Resolution (ADC) (bits) 12 INL (\u00b1LSB) 1
Input Chan. 1 AVdd (min) (V) 2.7
Conv. Rate (max) (ksps) 108 AVdd (max) (V) 5.25
ADC Architecture SAR DVdd (min) (V) -
Data Bus SPI DVdd (max) (V) -
Diff/S.E. Input S.E. Only Iavdd (typ) (mA) 0.9
Internal Vref (nominal) (V) - Idvdd (typ) (mA) -
External Vref (min) (V) 0 Standby Current (\u03bcA) -
External Vref (max) (V) 5.25 Features -
Unipolar Vin (max) (V) 5.25 Smallest Available Pckg. (max w/pins) (mm2) 15.6
Bipolar Vin (max) (\u00b1V) - RoHS Available Yes
SNR (dB) - Industry Qualified -
SINAD (dB) 70 Oper. Temp. (\u00b0C) -55 to +125 ,-40 to +85 ,0 to +70
THD (dB) -80 Package/Pins PDIP/8 ,UMAX/8
SFDR (dB) 80 Budgetary Price (See Notes) $6.70 @1k

MAX14585 Documents

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