Rev 1.1
DIO32020
USB2.0 High-Speed and Audio/USB/UART Switch with
Negative Swing Capacity
Features
Descriptions
Low Ron Audio/USB analog switch
The DIO32020 is dual SPDT (Single Pole/Double
Low USB Con: 7pF
Throw) switch which combines low distortion
Negative Signal Swing Capable
audio/USB/UART and USB2.0 high-speed data
Low Audio Distortion
signal switching in the same low voltage device.
USB Switch -3dB Bandwidth: 1100MHz
This architecture is designed to allow negative
High Crosstalk and Off-isolation
signal passing as low as 3V below ground. When
Voltage Supply Operation: 2.7 to 5.5V
a voltage is detected on VBUS, DIO32020 will
Three Green Packages: DQFN-10,
immediately switch to USB mode. Due to ultra low
QFN-10, MSOP-10
capacitance design, the audio channels (pin 3 and
pin 4 input/outputs) are able to not only switch
Applications
audio signal but also high speed USB signal or
Cell-Phone/PDA
MP3/MP4/PMP
Portable Instrumentation
DIO32020 provides packages with Green or RoHS
Battery Powered Communications
tiny
Computer Peripherals
temperature range of -40°C to 85°C.
low voltage UART signal as well.
10L
packages,
and
operates
over
a
Block Diagram
DIO32020
Ordering Information
Order Part
Number
Top Marking
TA
Package
DIO32020LP10
YW0A
Green
-40 to 85°C
DQFN-10
Tape & Reel, 3000
DIO32020QN10
YW0A
Green
-40 to 85°C
QFN-10
Tape &Reel, 3000
DIO32020MP10
D32020
Green
-40 to 85°C
MSOP-10
Tape &Reel, 3000
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© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
DIO32020
DQFN-10
QFN-10
MSOP-10
VBUS
R/D2+
L/D2-
D1-
2
3
1
D1+
10
D1+
GND
4
9
VBUS
Vcc
5
8
Sel
6
7
COM-
COM+
D1R/D2+
L/D2GND
1
10
2
9
3
8
4
7
5
6
10
VBUS
D1+
1
9
Sel
D1-
2
8
COM+
R/D2+
3
7
COM-
L/D2-
4
6
Vcc
Sel
COM+
COMVcc
5
GND
Figure 1 Top View
Pin Descriptions
Pin Name
Direction
Description
D1+, D1-
I/O
Differential USB Data Input 1
R/D2+, L/D2-
I/O
Audio R/L or differential USB data input 2
VBUS
I
COM+/COM-
I/O
Sel
I
Control Input
Vcc/ GND
P
Power
Switch Select
Data/Audio Common Port
Truth Table
Sel
VBUS
L/D2-, R/D2+
D1+, D1-
Low
Low
ON
OFF
Low
High
OFF
ON
High
X
ON
OFF
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© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
Pin Assignment
DIO32020
Stresses beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the device. These are stress
ratings only and functional operation of the device at these or any other condition 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.
Symbol
Parameter
Rating
Unit
VCC
Supply Voltage
-0.5 to 6.5
V
VBUS
VBUS Control Input Voltage
-0.5 to 6.5
V
VIN
ASEL Control Input Voltage
-0.5 to 6.5
V
USB Path Analog Signal Voltage
-0.5 to 6.5
Audio Path Analog Signal Voltage
-3.5 to 6.5
Storage Temperature
-65 to 150
VSW
V
ASEL Control Input Current
5
VBUS Control Input Current
5
IIN
°C
μA
ISW_CON
Analog Signal Continuous Current
±100
mA
ISW_PK
Analog Signal Peak Current
±500
mA
ESD
HBM, JEDEC: JESD22-A114
I/O to GND
5
Others
8
kV
Recommend Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended Operating
conditions are specified to ensure optimal performance to the datasheet specifications. DIOO does not Recommend exceeding them
or designing to Absolute Maximum Ratings.
Symbol
VCC
Parameter
Supply Voltage
Rating
Unit
2.7 to 5.5
V
VBUS Control Input Voltage
0 to 5.5
ASEL Control Input Voltage
0 to VCC
USB to COM Analog Signal Voltage
0 to VCC
Audio to COM Analog Signal Voltage
-3 to VCC
Operating Temperature Range
-40 to 85
VIN
V
VSW
TA
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V
°C
© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
Absolute Maximum Ratings
DIO32020
All typical value are at TA = 25°C unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
CONTROL INPUT (TA=25°C, VCC=3.3V)
VIH
VIL
IIN
VIH
VIL
IIN
RVBUS_PD
ASEL Control Input High
Voltage
ASEL Control Input Low
Voltage
ASEL Control Input
Leakage Current
VBUS Control Input High
Voltage
VBUS Control Input Low
Voltage
VBUS Control Input
Leakage Current
VBUS_CTRL Pull down
Resistance
1.3
VCC=2.7-4.2V
V
VCC=2.7-4.2V
1
0≤VSW≤VCC
0.5
V
2
µA
1.3
VCC=2.7-4.2V
V
VCC=2.7-4.2V
0≤VSW≤VCC
1
ION=10mA
4000
0.5
V
2
µA
kΩ
SUPPLY CURRENT AND LEAKAGE (TA=25°C, VCC=3.3V)
IOZ-USB
Off Leakage Current of
port DN/DP
DN/DP=0V to 4.2V, R, L, COM+, COM- float
-1
1
uA
IOZ-AUDIO
Off Leakage Current of
port R/L
R/L=-3V to 3V, DN, DP, COM+, COM- float
-1
1
uA
ION-USB
On Leakage Current of
USB Switch
COM+/COM- =0V to 4.2V, R, L, DN, DP float
-1
1
uA
ION-AUDIO
On Leakage Current of
AUDIO Switch
COM+/COM- =-3V to 3V, R, L, DN, DP float
-1
1
uA
Ioff
Power off leakage
VCC=0V
-1
1
uA
ICC
Quiescent Supply
35
µA
18
USB SWITCHES (D+, D-) (TA=25°C, VCC=3.3V)
RON
On Resistance
ION=10mA, VSW =0V to VCC
3.8
Ω
RFLATE
On Resistance Flatness
ION=10mA, VSW =0V to VCC
15
mΩ
∆RON
On Resistance Matching
ION=10mA, VSW =0V to VCC
100
mΩ
AUDIO SWITCHES (R, L) (TA=25°C, VCC=3.3V)
RON
On Resistance
ION=100mA, VSW =-3 to 3V
0.8
Ω
RFLATE
On Resistance Flatness
ION=100mA, VSW =-3 to 3V
2
mΩ
∆RON
On Resistance Matching
ION=100mA, VSW =-3 to 3V
50
mΩ
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© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
DC Electrical Characteristics
DIO32020
All typical value are at TA =25°C unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
AC Parameter (TA=25°C, VCC=3.3V, RL=50Ω, CL=5pF, unless otherwise specified)
USB Turn-on Time
DP=DN=1.5V, RL=50Ω, CL=35pF
32
μs
Audio Turn-on Time
L=R=1.5V, RL=50Ω, CL=35pF
32
μs
USB Turn-off Time
DP=DN=1.5V, RL=50Ω, CL=35pF
100
ns
Audio Turn-off Time
L=R=1.5V, RL=50Ω, CL=35pF
150
ns
Audio off to USB on
30
µs
USB off to Audio on
30
µs
1100
MHz
tON
tOFF
TBBM
BW
Break Before Make Time
-3dB Bandwidth USB
Channel
RL=50Ω, CL=5pF
USB OFF-Isolation
VSW=1VRMS, RL=50Ω, f=240MHz
-23
dB
Audio OFF-Isolation
VSW=1VRMS, RL=50Ω, f=1kHz
-110
dB
USB Crosstalk
RL=50Ω, f=240MHz
-45
dB
Audio Crosstalk
RL=50Ω, f=1kHz
-80
dB
OIRR
XTALK
RL=600Ω, f=1kHz,
-110
VSW=2VRMS, With A-weighted
THD+N
Total Harmonic
Distortion + Noise
RL=32Ω, f=1kHz,
-100
VSW=1VRMS, With A-weighted
RL=16Ω, f=1kHz,
-100
VSW=0.5VRMS, With A-weighted
PSRR
Power Supply Rejection
Ratio
dB
f=10kHz, RCOM=50Ω
-75
dB
2
pF
7
pF
CAPACITANCE (TA=25°C, VCC=3.3V, RL=50Ω, CL=5pF, f=1MHz, ASEL=0V, unless otherwise specified)
CIN
ASEL Control Input
Capacitance
CON
USB ON Capacitance
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VCC= 0V
f=1MHz, VBUS=VDD,
VSEL=LOW, VD- or VD+ = VCOMX = 0V
© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
Electrical Characteristics (Continued)
DIO32020
Audio ON Capacitance
VBUS=LOW, VSEL=LOW
7
pF
COFF
USB OFF Capacitance
VBUS=VDD, VSEL=LOW
3
pF
COFF
Audio OFFCapacitance
VBUS=LOW, VSEL=LOW
4
pF
Typical Performance Characteristics
TA=25°C, Vcc=3.3V, unless other otherwise specified.
DIO32020 USB 2.0 high speed (480Mbps) eye pattern
TIME SCALE (0.2ns/DIV)
Figure 2 Eye Pattern: 480Mbps with USB switch In signal path
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© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
CON
DIO32020
DIO32020 is used in applications where the slim and thin smart phone designs are expected. By sharing the USB
connector between USB2.0 data lines and audio headphone outputs, the designers can eliminate the using of
bulky headphone jacks. Meanwhile, using the mini-USB connectors as audio outputs allows the end users to
reduce the cost to buy too many different types of cell phone accessories.
DIO32020 unique architectures allow the part to allow the part to have constant Ron, Ron (flatness) and THD
performance independent of Vcc supply value. So in some applications such as mobile cell phone designs, if the
designers want to achieve the lowest standby power consumption when the battery is turned OFF, it is highly
recommended that DIO32020 be powered by 2.8V, no need of being powered by battery (4.3V) directly. This will
help designers to be freed from the complex logic designs to ensure the part will get into sleep mode.
DIO32020’s control pins are 1.8V control logic compatible, so the parts can be controlled by baseband processor
GPIO directly without worrying about the level shifting issues. Regarding high speed signal integrity, DIO32020 is
recommended to be placed as close as possible to the USB controller outputs to reduce the signal reflection
under high speed mode (480Mbps). In the meanwhile, the Vcc pin of DIO32020 is required to have decoupling
capacitors to reduce the supply ripples.
The below is the DIO32020 USB 2.0 high speed (480Mbps) eye diagram compliance test under near-end mode
(most challenging mode).
2.8V
10nF
D+
DUT
DIO32020
USB Host
Device
DFigure 3 USB2.0 high speed eye diagram test circuit
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© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
Applications Design Guide
DIO32020
When DIO32020 is powered under audio mode, audio channel can pass at least -3V negative audio signal with
up to 100dB THD performance. Under USB mode or device being powered OFF(VCC=0), the negative audio
signal on audio ports can be isolated as well to allow flexible design needs.
www.dioo.com
© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
DIO32020 features not only 100dB total harmonic distortion (THD), but also superior off isolation capability.
DIO32020
COMMON DIMENSIONS(MM)
PKG.
UT:ULTRA THIN
REF.
MIN.
NOM
MAX
A
0.5
0.55
0.6
A1
0
A3
0.15REF.
D
1.35
1.4
1.45
E
1.75
1.8
1.85
b
0.15
0.2
0.25
L
0.3
0.4
0.5
L1
0.4
0.5
0.6
e
www.dioo.com
0.05
0.4BSC
© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
Physical Dimensions: DQFN-10
DIO32020
COMMON DIMENSIONS(MM)
PKG.
UT:ULTRA THIN
REF.
MIN.
NOM
MAX
A
0.50
0.55
0.60
A1
0.00
A3
0.15REF.
D
1.95
2.00
2.05
E
1.45
1.50
1.55
b
0.15
0.20
0.25
b1
0.20
0.25
0.30
b2
0.25
0.30
0.35
L
0.30
0.35
0.40
L1
0.35
0.40
0.45
e
www.dioo.com
0.05
0.50 BSC
© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
Physical Dimensions: QFN-10
DIO32020
www.dioo.com
Symbol
Min
Typ
Max
A
-
-
1.10
A1
0
-
0.15
A2
0.75
0.85
0.95
A3
0.25
0.35
0.39
b
0.18
-
0.27
b1
0.17
0.20
0.23
c
0.15
-
0.20
c1
0.14
0.15
0.16
D
2.90
3.00
3.10
E
4.70
4.90
5.10
E1
2.90
3.00
3.10
e
0.40
0.50
0.60
L
0.40
0.60
0.80
L1
0.95REF
L2
0.25BSC
R
0.07
-
-
R1
0.07
-
-
Θ
0°
-
8°
Θ1
9°
12°
15°
© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
Physical Dimensions: MSOP-10
DIO32020
Dioo is a professional design and sales corporation for high-quality and performance analog semiconductors. The company focuses on
industry markets, such as, cell phone, handheld products, laptop, and medical equipment and so on. Dioo’s product families include
analog signal processing and amplifying, LED drivers and charger IC. Go to http://www.dioo.com for a complete list of Dioo product
families.
For additional product information, or full datasheet, please contact with our Sales Department or Representatives.
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© 2019 DIOO MICROCIRCUITS CO., LTD
DIO32020• Rev. 1.1
USB2.0 High-Speed and Audio Switch with Negative Swing Capacity
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