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  • TS3USBA225 USB 2.0 High-Speed (480 Mbps) and Audio Switches with Negative Signal Capability and 1.8-V Logic Compatibility and Power-Down Mode

    • SCDS328C October   2011  – August 2015 TS3USBA225

      PRODUCTION DATA.  

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  • TS3USBA225 USB 2.0 High-Speed (480 Mbps) and Audio Switches with Negative Signal Capability and 1.8-V Logic Compatibility and Power-Down Mode
  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Dynamic Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Click and Pop Reduction
      2. 7.3.2 Negative Signal Swing Capability
    4. 7.4 Device Functional Modes
      1. 7.4.1 High Impedance (Hi-Z) Mode
        1. 7.4.1.1 Power-Down Mode
      2. 7.4.2 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Community Resources
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
  13. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • RUT|12
    • MPQF248C
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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  • scds328c_pm
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DATA SHEET

TS3USBA225 USB 2.0 High-Speed (480 Mbps) and Audio Switches with Negative Signal Capability and 1.8-V Logic Compatibility and Power-Down Mode

1 Features

  • 2.7-V to 5.0-V Operating Power Supply (VCC)
  • MHL/High-Speed USB (480 Mbps) Switch:
    • V I/O Accepts Signals up to 4.5 V (Independent of VCC)
    • 6.5 Ω rON Typical
    • 3 pF CON Typical
    • 1.9 GHz Bandwidth (–3 dB)
  • Audio Switch:
    • 2.5 Ω rON Typical
    • Negative Rail Capability down to –1.8 V
    • Low THD: < 0.05%
    • Internal Shunt Resistors for Click-and-Pop Reduction
  • 1.8-V Compatible Control Input (SEL1 and SEL2) Threshold
  • Minimized Current Consumption (~5 µA) in Power-Down Mode
  • Power-Off Protection: All I/O Pins are High-Z when VCC= 0 V
  • 12-Pin QFN Package (2 mm × 1.7 mm, 0.4 mm Pitch)
  • ESD Performance Tested per JESD 22
    • 2000 V Human-Body Model
      (A114-B, Class II)
    • 1000 V Charged-Device Model (C101)

    • Simplified Block Diagram

    TS3USBA225 typ_app_cds328.gif

2 Applications

  • Cell phones and Smartphones
  • Tablet PCs
  • Portable Instrumentation
  • Digital Still Cameras
  • Portable Navigation Devices (GPS)
  • USB 2.0, MIPI (CSI/DSI), LVDS Switching

3 Description

The TS3USBA225 is a 2-channel single-pole triple-throw (SP3T) multiplexer that supports USB 2.0 High-Speed (480 Mbps) signals in all 3 differential channels. The first two high-speed differential channels also support Mobile High Definition Link (MHL) signaling with resolution and video frame rates up to 720p, 60 fps and 1080i, 30 fps. The remaining differential channel can also be used as an audio switch that is designed to allow analog audio signals to swing negatively. This configuration allows the system designer to use a common connector for audio and USB 2.0 or MHL data.

The TS3USBA225 has a VCC range of 2.7 V to 5.0 V with the capability to pass true-ground audio signals down to –1.8 V. The device also supports a power-down mode that can be enabled when both SEL1 and SEL2 controls are low to minimize current consumption when no signal is transmitting. The TS3USBA225 also features internal shunt resistors on the audio path to reduce clicks and pops that may be heard when the audio switches are selected.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TS3USBA225 UQFN (12) 2.00 mm × 1.70 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Revision History

Changes from B Revision (July 2012) to C Revision

  • Added Device Information table, ESD Ratings table, Thermal Information table, Detailed Description section, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Correct typographical errors to align datasheet information. Go
  • Changed "Negative Rail Capability -1.8 V to VCC" to “Negative Rail Capability down to -1.8 V” in Features. Go
  • Updated Recommended Operating Conditions table. Go
  • Updated Typical Characteristics graphs. Go

Changes from A Revision (April 2012) to B Revision

  • Updated Application Block Diagrams.Go
  • Updated MIN value in the Absolute Maximum Ratings table for VR, VL.Go
  • Updated MIN value in the Recommended Operating Conditions table for VR, VL.Go

Changes from * Revision (October 2011) to A Revision

  • Added MHL specification to datasheet.Go
  • Updated Application Block Diagrams.Go
  • Added MHL Eye Pattern graphics.Go

5 Pin Configuration and Functions

RUT Package
12-Pin UQFN
Top View
TS3USBA225 po_scds328.gif

Pin Functions

PIN I/O DESCRIPTION
NAME NO.
D0+ 1 I/O MHL/USB/UART Data 1 (Differential +)
D1+ 2 I/O MHL/USB/UART Data 2 (Differential +)
VCC 3 - Power supply
D1– 4 I/O MHL/USB/UART Data 2 (Differential –)
D0– 5 I/O MHL/USB/UART Data 1 (Differential –)
L 6 I/O USB-/Left Channel Audio
SEL2 7 I Control Input Select Line 2. The default state for SEL2 is LOW.
D–/L 8 I/O MHL/USB/UART/Audio Common Connector
GND 9 - Ground
D+/R 10 I/O MHL/USB/UART/Audio Common Connector
SEL1 11 I Control Input Select Line 1. The default state for SEL1 is LOW.
R 12 I/O USB+/Right Channel Audio

Function Table

SEL1 SEL2 VCC L,R D0+, D0- D1+, D1- MODE
X X L OFF OFF OFF Hi-Z Mode
L L H OFF OFF OFF Power-Down Mode
L H H OFF (1) ON OFF MHL/USB Mode 1
H L H ON OFF OFF USB/Audio Mode
H H H OFF (1) OFF ON MHL/USB Mode 2
(1) 100 Ω shunt resistors are enabled in this state.

6 Specifications

6.1 Absolute Maximum Ratings(1)(2)(3)

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
VCC Supply voltage –0.3 6.0 V
VD0+, VD0-,
VD1+, VD1-		 High speed differential signal voltage –0.3 4.6 V
VR, VL Audio signal voltage – 1.9 4.6 V
IK Analog port diode current VI/O+ ,VI/O- < 0 –50 mA
VI Digital input voltage (SEL1, SEL2) –0.3 6.0 V
IIK Digital logic input clamp current(3) VI < 0 –50
ICC Continuous current through VCC 100 mA
IGND Continuous current through GND –100 mA
Tstg Storage temperature –65 150 °C
(1) 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 under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The algebraic convention, whereby the most negative value is a minimum and the most positive value is a maximum.
(3) All voltages are with respect to ground, unless otherwise specified.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 500-V HBM is possible with the necessary precautions.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 250-V CDM is possible with the necessary precautions.

6.3 Recommended Operating Conditions

MIN MAX UNIT
VCC Supply voltage range 2.7 5.0 V
VD0+, VD0-,
VD1+, VD1-		 High speed differential signal voltage range 0 4.5 V
VR, VL Audio signal voltage range when not in power-down mode –1.8 4.3 V or VCC(1) V
Audio signal voltage range when in power-down mode –1 1
IK Analog port diode current VI/O+ ,VI/O- < 0 –50 mA
VI Digital input voltage range (SEL1, SEL2) 0 VCC V
TA Operating free-air temperature –40 85 °C
(1) This rating is exclusive and the voltage on the pins must not exceed either 4.3 V or VCC. E.g. if VCC = 3.3 V the voltage on the pin must not exceed 3.3 V and if VCC is = 5.0 V the voltage on the pin must not exceed 4.3 V.

6.4 Thermal Information

THERMAL METRIC (1) TS3USBA225 UNIT
RUT (UQFN)
12 PINS
RθJA Junction-to-ambient thermal resistance 118.6 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 45.1 °C/W
RθJB Junction-to-board thermal resistance 47.9 °C/W
ψJT Junction-to-top characterization parameter 0.7 °C/W
ψJB Junction-to-board characterization parameter 47.9 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

TA = –40°C to 85°C, typical values are at VCC = 3.3 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
MHL/USB SWITCH
ron ON-state resistance VCC = 3.0 V VI/O+,I/O- = 0.4 V, ION = 15 mA 6.5 7.5 Ω
Δron ON-state resistance match between channels VCC = 3.0 V VI/O+,I/O- = 1.7 V, ION = 15 mA 0.1 Ω
ron (flat) ON-state resistance flatness VCC = 3.0 V VI/O+,I/O- = 0 to 1.7 V, ION = 15 mA 0.5 Ω
IOZ OFF leakage current VCC = 3.6 V Switch OFF , VI/O+,I/O- = 0 to 3.6 V,
VD+/R, D-/L = 0 V		 1 µA
USB/AUDIO SWITCH
ron ON-state resistance VCC = 3.0 V SEL1 = High, SEL2 = Low,
VL/R = –1.8 V, 0 V, 0.7 V,
ION = –26 mA		 2.5 3.5 Ω
Δron ON-state resistance match between channels VCC = 3.0 V SEL1 = High, SEL2 = Low,
VL/R = 0.7 V, ION = –26 mA		 0.1 Ω
ron (flat) ON-state resistance flatness VCC = 3.0 V SEL1 = High, SEL2 = Low,
VL/R = –1.8 V, 0 V, 0.7 V, ION = –26 mA		 0.1 Ω
rSHUNT Shunt resistance VCC = 2.7 V to 5.0 V Switch OFF, VL/R = 0.7 V,
ISHUNT = 10 mA		 100 200 Ω
DIGITAL CONTROL INPUTS (SEL1, SEL2)
VIH Input logic high VCC = 3.3 V to 5.0 V 1.3 V
VIL Input logic low VCC = 2.7 V to 3.3 V 0.25 V
VCC = 3.3 V to 5.0 V 0.4
IIN Input leakage current VCC = 2.7 V to 5.0 V VIN = 5.0 V ±3 μA
VIN = 0 V ±0.1
rPD1, rPD2 Internal pulldown resistance VCC = 2.7 V to 5.0 V 3 MΩ

6.6 Dynamic Characteristics

TA = –40°C to 85°C, typical values are at VCC = 3.3 V, TA = 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
MHL/USB SWITCH
tpd Propagation Delay VCC = 2.7 V or 3.3 V 0.25 ns
tON Turn-on time RL = 50 Ω, CL = 35 pF VCC = 2.7 V 60 ns
tOFF Turn-off time RL = 50 Ω, CL = 35 pF VCC = 2.7 V 20 ns
tSK(O) Channel-to-channel skew VCC = 2.7 V or 3.3 V 15 ps
tSK(P) Skew of opposite transitions of same output VCC = 2.7 V or 3.3 V 15 ps
CI/O+(OFF)
CI/O-(OFF)		 OFF capacitance VCC = 2.7 V or 3.3 V,
VD0+/D0- =0 or 3.3 V		 Switch OFF 1 pF
CI/O+(ON)
CI/O-(ON)		 ON capacitance VCC = 2.7 V or 3.3 V,
VD0+/D0- = 0 or 3.3 V		 Switch ON 3 pF
CI Digital input capacitance VCC = 2.7 V or 3.3 V, VI = 0 or 3.3 V 2.5 pF
BW Bandwidth VCC = 2.7 V or 3.3 V, RL = 50 Ω Switch ON 1.9 GHz
OISO OFF Isolation VCC = 2.7 V or 3.3 V, RL = 50 Ω,
f = 240 MHz		 Switch OFF -35 dB
XTALK Crosstalk VCC = 2.5 V or 3.3 V, RL = 50 Ω,
f = 240 MHz		 Switch ON -45 dB
USB/AUDIO SWITCH
tON Turn-on time RL = 50 Ω, CL = 35 pF VCC = 2.7 V 40 µs
tOFF Turn-off time RL = 50 Ω, CL = 35 pF VCC = 2.7 V 15 ns
CL(OFF), CR(OFF) L , R OFF capacitance VCC = 2.7 V to 4.5 V, f = 20 kHz Switch OFF 1.0 pF
CL(ON), CR(ON) L, R ON capacitance VCC = 2.7 V to 4.5 V, f = 20 kHz Switch ON 3.5 pF
OISO OFF Isolation VCC = 3.3 V, RL = 50 Ω, f = 20 kHz Switch OFF -85 dB
XTALK Crosstalk VCC = 3.3 V, RL = 50 Ω, f = 20 kHz Switch ON -95 dB
THD Total harmonic distortion VCC = 3.3 V, SEL1 = High, SEL2 = Low,
f = 20 Hz to 20 kHz, RL = 600 Ω,
VIN = 2 Vpp		 Switch ON 0.05%
SUPPLY
VCC Power supply voltage 2.7 5.0 V
ICC Positive supply current VCC = 2.7 V, 3.6 V, 5.0 V VIN= VCC or GND, VI/O = 0 V,
Switch ON or OFF		 25 50 µA
ICC, PD Positive supply current (Power-Down Mode) VCC = 2.7 V, 3.6 V, 5.0 V, VI/O = 0 V,
SEL1 and SEL2 = Low		 3 5 µA
PSRR Power Supply Rejection Ratio VCC = 2.7 V, 3.6 V, 5.0 V VIN = VCC +/- 200 mVpp
RL = 50 Ω		 -60 dB
IOFF Power off leakage current VCC = 0 V, D+/R, D-/L, D0+, D0-, D1+, D1-, L,
VIN = 0 to 4.5 V		 ±0.1 µA

6.7 Typical Characteristics

TS3USBA225 G001_SCDS327.png
Figure 1. ON Resistance vs VI for MHL/USB Switch
TS3USBA225 G003_SCDS327.png
A.
Figure 3. Gain vs Frequency for MHL/USB Switch
TS3USBA225 G005_SCDS327.png
Figure 5. Off Isolation vs Frequency for MHL/USB Switch
TS3USBA225 D001_SCDS328.gif
Figure 7. ION, VCC = 2.7 V
TS3USBA225 D003_SCDS328.gif
Figure 9. ION, VCC = 5.0 V
TS3USBA225 D005_SCDS328.gif
Figure 11. IOFF, VCC = 3.3 V
TS3USBA225 G002_SCDS327.png
Figure 2. ON Resistance vs VI for USB/Audio Switch
TS3USBA225 G004_SCDS327.png
Figure 4. Gain vs Frequency for USB/Audio Switch
TS3USBA225 G006_SCDS327.png
Figure 6. Cross Talk vs Frequency for MHL/USB Switch
TS3USBA225 D002_SCDS328.gif
Figure 8. ION, VCC = 3.3 V
TS3USBA225 D004_SCDS328.gif
Figure 10. IOFF, VCC = 2.7 V
TS3USBA225 D006_SCDS328.gif
Figure 12. IOFF, VCC = 5.0 V

7 Detailed Description

7.1 Overview

The TS3USBA225 is a 2-channel single-pole triple-throw (SP3T) multiplexer that supports USB 2.0 High-Speed (480 Mbps) signals in all 3 differential channels. The first two high-speed differential channels also support Mobile High Definition Link (MHL) signaling with video resolution and frame rates up to 720p, 60 fps and 1080i, 30 fps. The remaining differential channel can also be used as an audio switch that is designed to allow analog audio signals to swing negatively. This configuration allows the system designer to use a common connector for audio and USB 2.0 or MHL data.

The TS3USBA225 has a VCC range of 2.7 V to 5.0 V with the capability to pass true-ground audio signals down to –1.8 V. The device also supports a power-down mode that can be enabled when both SEL controls are low to minimize current consumption when no signal is transmitting. The TS3USBA225 also features internal shunt resistors on the audio path to reduce clicks and pops that may be heard when the audio switches are selected.

7.2 Functional Block Diagram

TS3USBA225 logic_blk_cds328.gif

7.3 Feature Description

7.3.1 Click and Pop Reduction

The shunt resistors in the TS3USBA225 automatically discharge any capacitance at the L and R terminals when they are not connected to the common D-/L and D+/R paths. This reduces the audible click-and-pop sounds that occur when switching between audio sources. Audible clicks and pops are caused when a step DC voltage is switched into the speaker. By automatically discharging the side that is not connected, any residual DC voltage is removed, thereby reducing the clicks and pops.

7.3.2 Negative Signal Swing Capability

The TS3USBA225 has an analog audio path L and R that can support negative signals that pass below ground without distortion. These analog switches operate from –1.8 V to 4.3 V.

7.4 Device Functional Modes

7.4.1 High Impedance (Hi-Z) Mode

The TS3USBA225 has a Hi-Z mode that places the device's signal paths in a high impedance state when there is no power supplied to the TS3USBA225 VCC pin. This mode will isolate the signal bus in a powered off situation so that it may not interfere with other devices that maybe sharing the bus.

7.4.1.1 Power-Down Mode

The TS3USBA225 has a power-down mode that reduces the power consumption to 3 μA when the device is not in use. To put the device in power-down mode and disable the switch, the SEL1 and SEL2 pins must be supplied with a logic low signal.

7.4.2 Device Functional Modes

Table 1 is the function table for the TS3USBA225.

Table 1. Function Table

SEL1 SEL2 VCC L,R D0+, D0- D1+, D1- MODE
X X L OFF OFF OFF Hi-Z Mode
L L H OFF OFF OFF Power-Down Mode
L H H OFF (1) ON OFF MHL/USB Mode 1
H L H ON OFF OFF USB/Audio Mode
H H H OFF (1) OFF ON MHL/USB Mode 2

 
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