PERICOM PI3USB411

PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
w/ Low THD Channels for Audio Signals
Features
Description
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PI3USB411 integrates two unique Pericom technology solutions
into a single IC package. PI3USB411 offers the customer a
solution that switches both high speed differential signals, with
high bandwidth performance, as well as low THD audio signals.
For handheld applications where both a USB data transfer port
and a port for an external headset is required, the PI3USB411
solution can offer the ability to combine the two ports into one.
With a single port, design engineers are faced with an issue of
switching two completely different types of signals. One signal
is a high speed differential signal, where bandwidth is the largest
concern, and the second signal is an audio signal, where low THD
is the largest concern. Pericom’s solution offers multiple channels
within the PI3USB411 device. Two channels are targeted for high
speed USB2.0 signals (Dx), and two channels are targeted for low
THD audio signals (Ax). Due to its passive nature, all paths will
allow bi-directional traffic.
Bandwidth for USB ports > 1.2Gbps
Low THD for Audio ports < 0.02%
ESD > 2kV HBM
Low ICC = 800µA
Wide VCC operating range: 2.7V to 4.2V ±10%
Packaging: Pb-free & Green, 16-contact TDFN (ZJ16)
Block Diagram
Pin Description
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Truth Table
USB_EN
Function
0
DI = DO
1
DI = DO = Hi-Z
A_ENx
Function
0
Ainx = Aoutx
1
Ainx = Aoutx = Hi-Z
Note: x = 1, 2
06-0078
1
PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ......................................... –65°C to +150°C
Supply Voltage to Ground Potential .................... –0.5V to +4.4V
DC Input Voltage ................................................. –0.5V to +5.5V
DC Output Current ........................................................... 120mA
Power Dissipation ................................................................ 0.5W
Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other
conditions above those indicated in the operational sections of this
specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
DC Electrical Characteristics for USB 2.0 Switching over Operating Range
(only related to pins 1, 2, 4, 14, 15)
(TA = –40°C to +85°C, VCC = 3.3V ±10%)
Paramenter
Test Conditions (1)
Description
Typ.(2)
Min.
VCC = 4.2V
2.0
VCC = 3.3V
1.6
Max.
Units
0.8
V
VIH
Input HIGH Voltage
Guaranteed HIGH level
VIL
Input LOW Voltage
Guaranteed HIGH level
VIK
Clamp Diode Voltage
VCC = Max.,
IIN = –18mA
IIH
Input HIGH Current
VCC = Max.,
VIN = VCC
±5
IIL
Input LOW Current
VCC = Max.,
VIN = GND
±5
RON
Switch On-Resistance(3)
VCC = Min.,
1.25V ≤ VIN ≤ VCC,
IIN = –40mA
4
RFLAT(ON)
On-Resistance Flatness(4)
VCC = Min., VIN @
1.5V and VCC IIN =
-40mA
1.0
ΔRON
On-Resistance match from
center ports to any other
port(4)
VCC = Min.,
1.5V ≤ VIN ≤ VCC,
IIN = -40mA
0.9
-0.7
-1.2
μA
6.5
Ω
2
Capacitance for USB 2.0 Switching (TA = 25°C, f = 1 MHz) (only related to pins 1, 2, 4, 14, 15)
Parameters(4)
Description
CIN
Input Capacitance
COFF
Port I Capacitance, Switch OFF
CON
Switch Capacitance, Switch ON
Test Conditions(1)
VIN = 0V
Typ.(2)
Max.
2.0
3.0
4.0
6
7.5
9.5
Units
pF
Notes for Page 2:
1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading.
3. Measured by the voltage drop between DI and DO pins at indicated current through the switch. ON-resistance is determined by the lower of the
voltages on the two (DI & DO) pins.
4. This parameter is determined by device characterization but is not production tested.
06-0078
2
PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Dynamic Electrical Characteristics Over the Operating Range
(TA = –40°C to +85°C, VCC = 3.3V ±10%, GND = 0V) (Only related to pins 1, 2, 4, 14, 15)
Parameters(1)
Description
XTALK
Crosstalk
OIRR
OFF Isolation
BW
Bandwidth -3dB
Test Conditions(3)
Typ.(4)
Units
-31
RL = 100Ω, f = 250 MHz
dB
-39
RL = 100Ω
700
MHz
Switching Characteristics (Only related to pins 1, 2, 4, 14, 15)
Parameters
tPD
Test (3)
Conditions
Description
Min.
Propagation Delay(2)
Typ.(4)
Max.
0.25
tPZH, tPZL
Line Enable Time - USB_EN to DI, DO
0.5
15.0
tPHZ, tPLZ
Line Disable Time - USB_EN to DI, DO
0.5
9.0
tSK(p)
Skew between opposite transitions of the same output (tPHL
- tPLH) (2)
Power Supply Characteristics
Parameter
ICC
Description
Power Supply Current
Units
Test Conditions(3)
VCC = Max, VIN = GND or VCC
Min.
ns
0.1
0.2
Typ.
Max.
Units
800
µA
Notes for Page 3:
1. Guaranteed by design.
2. The switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The time
constant for the switch alone is of the order of 0.25ns for 10pF load. Since this time constant is much smaller than the rise/fall times of typical
driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined
by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.
3. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
4. Typical values are at VCC = 3.3V, TA = 25C ambient and maximum loading.
06-0078
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06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Test Circuit for Electrical Characteristics
6.0V
VCC
200-ohm
Pulse
Generator
VIN
D.U.T
VOUT
10pF
CL
RT
200-ohm
Notes:
• CL = Load capacitance: includes jig and probe capacitance.
• RT = Termination resistance: should be equal to ZOUT of the Pulse Generator
• Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
• All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
• The outputs are measured one at a time with on transition per measurement.
Switch Positions
Test
Switch
tPLZ, tPZL (output on O-side)
6.0V
tPHZ, tPZH (output on O-side)
GND
Prop Delay
Open
Test Circuit for Dynamic Electrical Characteristics
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Switching Waveforms
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Voltage Waveforms Propagation Delay Times
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Voltage Waveforms Enable and Disable Times
3.5V
2.5V
Input
tPLH
1.5V
tPHL
VOH
2.5V
Output
VOL
tSK(p) = I tPHL – tPLH I
Pulse Skew - tSK(p)
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Audio Switch (only related to pins 5, 6, 7, 8, 9, 11)
DC Electrical Characteristics +3V Supply
(VCC = 2.7V to 4.2V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at 3V and +25°C.)
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
VCC
V
Analog Switch
Analog Signal Range
VAINX or
VAOUTX
On-Resistance
RON
VCC = 2.7V, IAIN = 100mA,
VAOUT = 0 to VCC
0.6
0.8
On-Resistance Match
Between Channels
∆RON
VCC = 2.7V, IAIN = 100mA,
VAOUT = 1.5V
0.01
0.06
On-Resistance
Flatness
RONF
VCC = 2.7V, IAIN = 100mA,
VAOUT = 0 to VCC
Off Leakage Current
IOFF
VCC = 3.3V, VAOUT = 3V, 0.3V,
VAIN = 0.3V, 3V
-400
I (ON)
VCC = 3.3V, VAOUT = 3V, 0.3V,
VAIN = 0.3V, 3V, or floating
-160
On Leakage Current
-0.3
Ω
0.25
400
nA
160
Digital I/O (Pin 5 and Pin 7)
Input Logic High
VIH
1.3
Input Logic Low
VIL
Input Hysteresis
VH
VCC = 3.3V
Input Leakage
Current
IA_EN
VA_EN = 0 or VCC
0.6
200
V
mV
-0.5
0.5
µA
2.7
4.6
V
Power Supply
Power-Supply Range
06-0078
VCC
6
PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Switch and AC Characteristics (only related to pins 5, 6, 7, 8, 9, 11)
Parameter
Turn-On Time
Turn-Off Time
Symbol
Crosstalk
3dB Bandwidth
Min.
Typ.
Max.
25
tON
VCC = 2.7V, VAOUT = 1.5V,
RL = 50Ω, CL = 35pF,
See Test Circuit Figure 1 & 2.
15
tOFF
VCC = 2.7V, VAOUT = 1.5V,
RL = 50Ω, CL = 35pF,
See Test Circuit Figure 1 & 2.
4
VAIN = 0, RS = 0, CL = 1nF,
See Test Circuit Figure 3.
55
OIRR
CL = 5pF, RL = 50Ω, f = 100kHz,
VAIN = 1 VRMS, ,
See Test Circuit Figure 4.
-75
XTALK
CL = 5pF, RL = 50Ω, f = 100kHz,
VAIN = 1 VRMS,
See Test Circuit Figure 5.
-90
See Test Circuit Figure 8.
60
Charge Injection
Off-Isolation
Test Conditions
Q
f3dB
Units
ns
10
pC
dB
MHz
Capacitance (only related to pins 5, 6, 7, 8, 9, 11)
Parameter
Symbol
Test Conditions
Min.
Typ.
Off Capacitance
C (OFF)
f = 1MHz, See Test Circuit Figure 6.
35
On Capacitance
C (ON)
f = 1MHz, See Test Circuit Figure 7.
95
06-0078
7
Max.
Units
pF
PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Test Circuits and Timing Diagrams (only related to pins 5, 6, 7, 8, 9, 11)
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Figure 1. AC Test Circuit
Note:
1. Unused input (NC or NO) must be grounded.
Logic
Input
VIH
VIL
Off
50% On
tOFF
VOUT
Switch
Output 0V
tr < 5ns
tf < 5ns
Off
90%
90%
tON
Logic Input Waveforms inverted for
Switches that have opposite logic
Figure 2. AC Waveforms
06-0078
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
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Figure 3. Charge Injection Test
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Figure 5. Crosstalk
Figure 4. Off Isolation
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Figure 7. Channel On Capacitance
Figure 6. Channel Off Capacitance
06-0078
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9
PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
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Figure 8. Bandwidth
Application Information
USB 2.0 HS Data + Audio
Figure 9. Application of handheld device combining audio and USB data on single port
USB 2.0 Signals + High Fidelity Audio Signals
Figure 10: USB 2.0 high-Speed (480Mbps) Signal Test Set-up
06-0078
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Figure 11: USB 2.0 High-Speed (480Mbps) TP1, left eye, and TP5, right eye, tested with no PI3USB411 in the signal path
Figure 12: USB 2.0 High-Speed (480Mbps) TP1, left eye, and TP5, right eye, tested with only USB data signals connected (Audio
signals are left not connected with no inductors.
06-0078
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Figure 13: USB 2.0 High-Speed (480Mbps) TP1, left eye, and TP5, right eye, tested with PI3USB411 in the signal path with Analog
signals “Off” and 9.3uH Inductors for L1 and L2
Figure 14: USB 2.0 full-Speed (12Mbps) Signal Test Set-up
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Figure 15: USB 2.0 Full-Speed (12Mbps) TP1, left eye, and TP4, right eye, tested with no PI3USB411 in the signal path
Figure 16: USB 2.0 Full-Speed (12Mbps) TP1, left eye, and TP4, right eye, tested with only USB data signals connected (Audio signals are left not connected with no inductors).
Figure 17: USB 2.0 Full-Speed (12Mbps) TP1, left eye, and TP4, right eye, tested with PI3USB411 in the signal path with
Analog signals “Off” and 9.3uH Inductors for L1 and L2
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Figure 18: High Fidelity Audio Signal Test Setup.
In Figure 18, the test flow is to send a sine wave signal from 30Hz to 30KHz from the Function Generator (HP8116A) to the
Pericom Test Board. Pericom took measurements on three test points using a Tektronix Scope (TDS694C). The three test
points were TP2 (Channel 1 on Scope), TP3 (Channel 2 on Scope), and TP4 (Channel 3 on Scope). R1 represents the termina-
Figure 19: See Figure 18 for test setup. R1=12K and the sine wave on the left plot is 30kHz, while the sine wave on the right is
30Hz. Channel 1 (black)=TP2, Channel 2 (green)=TP3, Channel 3(red)=TP4
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Figure 20: R1=15-ohm, leftà30khz, rightà30hz, channel 1 (black)=TP2, channel 2 (green)=TP3, channel 3(red)=TP4
Figure 21: R1=4-ohm and the sine wave on the left plot is 30kHz, while the sine wave on the right is 30Hz. Channel 1 (black)=TP2,
Channel 2 (green)=TP3, Channel 3(red)=TP4
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PS8817A
06/06/06
PI3USB411
3.3V, USB 2.0 High-Speed Signal Switch
with Low THD Channels for Audio Signals
Packaging Information - 16-contact TDFN
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DATE: 03/30/06
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DESCRIPTION: 16-contact, Thin Dual-in-line Flat No-Lead (TDFN)
PACKAGE CODE: ZJ (ZJ16)
REVISION: B
DOCUMENT CONTROL #: PD-2042
Ordering Information
Ordering Code
Package Code
Package Description
Top Mark
PI3USB411ZJE
ZJ
Pb-free & Green, 16-contact TDFN
U1
Notes:
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• E = Pb-free and Green
• Adding an X suffix = Tape & Reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
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